truss and floor

Abstract

The application provides a truss and a floor. The truss comprises a steel top chord and two web bars. In the embodiment of the application, two extension parts of the steel top chord are arranged on both sides of a strip-shaped main body part of the steel top chord along a first direction, and there is an included angle between the main body part and the extension parts in a plane perpendicular to the extension direction of the main body part. The web bars have a plurality of periodic structures distributed along a second direction in sequence. The periodic structures comprise upper reverse bending parts, main stem parts and lower reverse bending parts distributed in sequence. The upper reverse bending parts are fixed with at least one of the main body part and the extension parts, so that the interval of the lower reverse bending parts at the bottom ends of the two web bars along the first direction is large, the force transmission area of the truss and the floor structure at the bottom is large, the stress is reasonable, and the stability of the whole truss is improved. Moreover, the contact position of the steel top chord and the upper reverse bending part is a plane, which is convenient for welding.

Description

Technical Field

[0001] This application relates to the field of building technology, and more specifically, to a truss and floor slab. Background Technology

[0002] With the acceleration of urbanization, various types of buildings are increasing. Among them, trusses are widely used. A truss consists of a top chord and web members, or a top chord, a bottom chord, and web members connecting the top and bottom chords. It is usually a planar or spatial structure with triangular units, mainly bearing axial tension or compression, and can make full use of the strength of the material.

[0003] In existing technologies, trusses typically use steel bars or steel pipes as the top chord. When steel bars are used as the top chord, if smaller diameter bars are selected, the spacing of the bottom ends of the web members along the first direction (such as the transverse direction) is shorter, resulting in a smaller force transmission area between the truss and the bottom plate structure. This leads to deformation and stress concentration under load, reducing overall stability and resulting in poor load-bearing capacity and safety. If larger diameter bars are selected, it is easy to cause waste.

[0004] When steel pipes are used as the top chord, their larger diameter enhances the overall stability of the truss. However, the curved outer wall of the steel pipe makes welding between the top chord and the web members difficult. Utility Model Content

[0005] This application addresses the shortcomings of existing methods by proposing a truss and floor slab to solve the technical problems of poor stability or welding difficulties in related technologies.

[0006] In a first aspect, embodiments of this application provide a truss, comprising:

[0007] A steel upper chord includes a main body and two extensions. The two extensions are disposed on both sides of the main body along a first direction. The main body is strip-shaped, and the first direction is perpendicular to a second direction in which the main body extends. In a plane perpendicular to the extension direction of the main body, there is an angle between the main body and the extensions.

[0008] Two web ribs, the overall length of which extends along the second direction and is at least partially located below the upper chord of the steel; along the second direction, the web ribs include a plurality of periodic structures distributed in sequence, the periodic structures including an upper reverse bend portion, a main body portion and a lower reverse bend portion distributed in sequence; the upper reverse bend portion is fixed to at least one of the main body portion and the extension portion.

[0009] Optionally, in a plane perpendicular to the extending direction of the main body, there is an angle between the upper reverse bend and the main body;

[0010] The upper reverse bend is fixed to the upper or lower surface of the main body, or at least a portion of the top end of the upper reverse bend is fixedly connected to the extension, and the upper reverse bend is parallel to at least a portion of the main body;

[0011] The two abdominal tendons may be separated or connected to each other in either of their upper inverted bends.

[0012] Optionally, the upper reverse bend portion is coplanar with the main body, and the upper reverse bend portion is fixedly connected to at least a portion of the extension portion.

[0013] Optionally, the main body includes at least two grooves, and the at least two grooves are arranged along the second direction.

[0014] Optionally, it also includes at least one of the following:

[0015] The extension is strip-shaped;

[0016] The angle between the main body and the extension is an obtuse angle.

[0017] Optionally, the main body includes at least two grooves, and the at least two grooves are arranged along the second direction; the extension is strip-shaped, and the planar region between any two adjacent grooves of the main body is coplanar with the extension, and the upper reverse bend is fixed to the upper or lower surface of the extension.

[0018] Optionally, the end of the extension away from the main body is bent to form an edge.

[0019] Optionally, the end of the extension away from the main body is bent to form an edge portion, which is parallel to the main body.

[0020] Optionally, the main body and the extension form a downward-opening first groove, the upper reverse-bending portion is fixed to the upper or lower surface of the main body, and the extension is fixedly connected to the main body.

[0021] Optionally, the main body and the extension are located on the same plane, the end of the extension away from the main body is bent to form an edge, and the upper reverse bend is fixed to the lower surface of at least one of the main body and the extension, or the upper reverse bend is fixed to the lower surface of the edge.

[0022] Alternatively, the main body and the extension are located on the same plane, the upper reverse bend is fixed to the lower surface of at least one of the main body and the extension, and the end of the extension away from the main body is curled to form an edge.

[0023] Optionally, the upper reverse bend is fixed to the lower surface of the main body, and the main body and the extension form an upward-opening second groove.

[0024] The truss also includes concrete filling the second trench.

[0025] Optionally, it also includes at least one of the following:

[0026] The first lower chord is fixed to the bottom of the lower reverse bend; the first lower chord extends along the second direction.

[0027] The second lower chord is fixed to the outside of the main body and connected to multiple bottoms of the main body at a designed distance; the second lower chord extends along the second direction;

[0028] The third lower chord is fixed to the inner side of the main body and connected to multiple bottoms of the main body at a designed distance; the third lower chord extends along the second direction;

[0029] At least one reinforcing rib is located on the upper or lower surface of the main body.

[0030] Optionally, it also includes at least one of the following:

[0031] At least one of the upper reverse bends of any of the abdominal ribs is at least one of a triangle, a trapezoid, and an inverted trapezoid in a plane parallel to the extension direction of the main body.

[0032] At least one of the downward curved portions of any of the said abdominal ribs is at least one of a triangle, a trapezoid, and an inverted trapezoid in a plane parallel to the extension direction of the main body.

[0033] Secondly, embodiments of this application provide a floor slab, comprising:

[0034] The truss as described in any of the first aspects above, and the plate structure disposed at the bottom of the truss.

[0035] Optionally, the plate structure includes a metal plate;

[0036] The truss includes a third bottom chord;

[0037] The upper surface of the plate structure is provided with a protruding rib, and the bottom end of the lower reverse bend of the web reinforcement of the truss is fixed to the protruding rib.

[0038] Optionally, the floor slab further includes at least two supporting structures; the at least two supporting structures are fixed to the ends of the truss along the second direction;

[0039] The supporting structure includes a first rib, a second rib, and a connecting plate; the first rib is laid on the third lower chord along a first direction, and both ends of the first rib are fixedly connected to the two web ribs respectively; the connecting plate is fixed to the lower surface of the main body of the steel upper chord of the truss; the first rib intersects with the second rib; one end of the second rib is fixedly connected to the plate structure; and the other end of the second rib is fixedly connected to the connecting plate.

[0040] Optionally, the floor slab further includes at least two supporting structures; the at least two supporting structures are fixed to the ends of the truss along the second direction;

[0041] The support structure is trapezoidal in a plane perpendicular to the extension direction of the truss. The top of the support structure is fixed to the lower surface of the main body of the steel upper chord of the truss, the bottom of the support structure is fixed to the plate structure, and the two sides of the support structure are respectively fixedly connected to the third lower chord of the two web reinforcements.

[0042] Optionally, the floor slab further includes at least two supporting structures; the at least two supporting structures are fixed to the ends of the truss along the second direction;

[0043] The supporting structure includes a third rib and at least two fourth ribs; the third rib is laid on the third lower chord along a first direction, and both ends of the third rib are fixedly connected to the two web ribs respectively; the two fourth ribs intersect with the third rib and are arranged at both ends of the third rib along the first direction; one end of the fourth rib is fixed to the lower reverse bend of the web rib, and the other end is fixed to one side of the extension of the steel upper chord of the truss, or one end of the fourth rib is fixed to the plate structure, and the other end of the fourth rib is fixed to the lower surface of the main body of the steel upper chord.

[0044] Optionally, the plate structure includes a metal plate;

[0045] The truss includes a first bottom chord and a third bottom chord;

[0046] The upper surface of the plate structure is provided with a protruding rib, and the bottom end of the lower reverse bend of the truss web reinforcement is fixed to the protruding rib by a first lower chord reinforcement, which is parallel to the protruding rib.

[0047] Optionally, the plate structure includes a metal plate;

[0048] The truss includes a first bottom chord and a third bottom chord;

[0049] The bottom end of the lower reverse bend of the web reinforcement of the truss is fixed to the plate structure by the first lower chord reinforcement.

[0050] Optionally, the slab structure includes a concrete base slab; the concrete base slab is cast from concrete or other cement-based materials.

[0051] The truss includes a first bottom chord and a second bottom chord or a third bottom chord;

[0052] The first lower chord reinforcement is inserted into the concrete base slab.

[0053] Optionally, the plate structure includes:

[0054] A concrete base slab, wherein the concrete base slab is cast from concrete or other cement-based materials;

[0055] The first reinforcing bar is disposed in the concrete base slab along the first direction and is laid on the lower reverse bend of a portion of the web reinforcement; at least a portion of the first reinforcing bars are connected to each other;

[0056] The second reinforcing bar is disposed within the concrete base slab along the second direction, located above the first reinforcing bar;

[0057] The bottom end of the web reinforcement of the truss is inserted into the concrete base slab and is fixedly connected to the first reinforcing bar and part of the second reinforcing bar.

[0058] Optionally, at least one transverse link is provided between adjacent trusses, and the two ends of the transverse link are respectively connected to the steel top chord of the two adjacent trusses.

[0059] Optionally, the plate structure includes a metal plate; the lower surface of the metal plate is provided with a non-metal plate.

[0060] The beneficial technical effects of the technical solutions provided in this application include:

[0061] In this embodiment, two extensions of the steel top chord are disposed on both sides of the strip-shaped main body of the steel top chord along a first direction. An angle exists between the main body and the extensions in a plane perpendicular to the extension direction of the main body. The web reinforcement has multiple periodic structures distributed sequentially along a second direction. These periodic structures include sequentially distributed upper inverted bends, main trusses, and lower inverted bends. The upper inverted bends are fixed to at least one of the main body and the extensions, resulting in a larger distance between the lower inverted bends at the bottom of the two web reinforcements along the first direction. This results in a larger force transmission area between the truss and the bottom plate structure, leading to more reasonable stress distribution and improved overall truss stability. Furthermore, the connection of the bends at the top of the two web reinforcements to the steel top chord makes the spacing between the web reinforcements on the steel top chord significantly smaller than that of traditional steel (steel pipe) trusses, reducing the length of unrestrained members and improving stability.

[0062] Furthermore, in this embodiment, the contact point between the upper steel chord and the upper inverted bend is a plane, which facilitates welding. In addition, the upper steel chord and the upper inverted bend have a line-to-surface contact, resulting in a large contact area and thus greater strength in the welded area, thereby improving the performance of the connection area.

[0063] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0064] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0065] Figure 1 This is a schematic diagram of the structure of the first type of truss provided in the embodiments of this application;

[0066] Figure 2 This is a front view structural diagram of the first type of truss provided in the embodiments of this application;

[0067] Figure 3 A top view of the first type of truss provided in the embodiments of this application;

[0068] Figure 4 A bottom view of the first type of truss provided in the embodiments of this application;

[0069] Figure 5 A left-side structural schematic diagram of the first type of truss provided in the embodiments of this application;

[0070] Figure 6 This is a schematic diagram of the structure of the second type of truss provided in the embodiments of this application;

[0071] Figure 7 A left-side structural schematic diagram of the second type of truss provided in the embodiments of this application;

[0072] Figure 8 This is a schematic diagram of the third type of truss provided in the embodiments of this application;

[0073] Figure 9 A left-side structural schematic diagram of the third type of truss provided in the embodiments of this application;

[0074] Figure 10 A left-side structural schematic diagram of the fourth type of truss provided in the embodiments of this application;

[0075] Figure 11 A left-side structural schematic diagram of the fifth type of truss provided in the embodiments of this application;

[0076] Figure 12 This is a schematic diagram of the sixth type of truss provided in the embodiments of this application;

[0077] Figure 13 A left-side structural schematic diagram of the sixth type of truss provided in the embodiments of this application;

[0078] Figure 14 This is a structural schematic diagram of the seventh type of truss provided in the embodiments of this application;

[0079] Figure 15 A left-side structural schematic diagram of the seventh type of truss provided in the embodiments of this application;

[0080] Figure 16 This is a structural schematic diagram of the eighth type of truss provided in the embodiments of this application;

[0081] Figure 17 A left-side structural schematic diagram of the eighth type of truss provided in the embodiments of this application;

[0082] Figure 18 A left-side structural schematic diagram of the ninth type of truss provided in the embodiments of this application;

[0083] Figure 19 This is a structural schematic diagram of the tenth type of truss provided in the embodiments of this application;

[0084] Figure 20 A left-side structural schematic diagram of the tenth type of truss provided in the embodiments of this application;

[0085] Figure 21 This is a schematic diagram of the eleventh type of truss provided in the embodiments of this application;

[0086] Figure 22 A left-side structural schematic diagram of the eleventh type of truss provided in this application embodiment;

[0087] Figure 23 This is a schematic diagram of the twelfth type of truss provided in the embodiments of this application;

[0088] Figure 24 A schematic diagram of the left-side structure of the twelfth type of truss provided in the embodiments of this application;

[0089] Figure 25 A left-side structural schematic diagram of the thirteenth truss provided in this application embodiment;

[0090] Figure 26 This is a schematic diagram of the fourteenth type of truss provided in the embodiments of this application;

[0091] Figure 27 A top view of the fourteenth truss provided in this application embodiment;

[0092] Figure 28A left-side structural schematic diagram of the fourteenth truss provided in this application embodiment;

[0093] Figure 29 This is a schematic diagram of the fifteenth type of truss provided in the embodiments of this application;

[0094] Figure 30 A left-side structural schematic diagram of the fifteenth type of truss provided in the embodiments of this application;

[0095] Figure 31 This is a structural schematic diagram of the sixteenth type of truss provided in the embodiments of this application;

[0096] Figure 32 A left-side structural schematic diagram of the sixteenth type of truss provided in the embodiments of this application;

[0097] Figure 33 A left-side structural schematic diagram of the seventeenth type of truss provided in the embodiments of this application;

[0098] Figure 34 A left-side structural schematic diagram of the eighteenth type of truss provided in the embodiments of this application;

[0099] Figure 35 This is a structural schematic diagram of the nineteenth type of truss provided in the embodiments of this application;

[0100] Figure 36 A left-side structural schematic diagram of the nineteenth type of truss provided in the embodiments of this application;

[0101] Figure 37 This is a left-side structural schematic diagram of the twentieth type of truss provided in the embodiments of this application;

[0102] Figure 38 A left-side structural schematic diagram of the twenty-first type of truss provided in this application embodiment;

[0103] Figure 39 This is a left-side structural schematic diagram of the twenty-second type of truss provided in the embodiments of this application;

[0104] Figure 40 This is a structural schematic diagram of the twenty-third type of truss provided in the embodiments of this application;

[0105] Figure 41 This is a left-side structural schematic diagram of the twenty-third type of truss provided in the embodiments of this application;

[0106] Figure 42 This is a schematic diagram of the twenty-fourth type of truss provided in the embodiments of this application;

[0107] Figure 43 This is a left-side structural schematic diagram of the twenty-fourth type of truss provided in the embodiments of this application;

[0108] Figure 44 This is a schematic diagram of the twenty-fifth type of truss provided in the embodiments of this application;

[0109] Figure 45 This is a left-side structural schematic diagram of the twenty-fifth type of truss provided in the embodiments of this application;

[0110] Figure 46 This is a left-side structural schematic diagram of the twenty-sixth type of truss provided in the embodiments of this application;

[0111] Figure 47 This is a left-side structural schematic diagram of the twenty-seventh type of truss provided in the embodiments of this application;

[0112] Figure 48 This is a left-side structural schematic diagram of the twenty-eighth type of truss provided in the embodiments of this application;

[0113] Figure 49 A left-side structural schematic diagram of the twenty-ninth type of truss provided in this application embodiment;

[0114] Figure 50 A left-side structural schematic diagram of the thirtieth type of truss provided in the embodiments of this application;

[0115] Figure 51 A left-side structural schematic diagram of the thirty-first type of truss provided in this application embodiment;

[0116] Figure 52 A left-side structural schematic diagram of the thirty-second type of truss provided in this application embodiment;

[0117] Figure 53 This is a left-side structural schematic diagram of the thirty-third type of truss provided in the embodiments of this application;

[0118] Figure 54 This is a schematic diagram of the thirty-fourth type of truss provided in the embodiments of this application;

[0119] Figure 55 A top view of the thirty-fourth type of truss provided in this application embodiment;

[0120] Figure 56 A left-side structural schematic diagram of the thirty-fourth type of truss provided in this application embodiment;

[0121] Figure 57 A left-side structural schematic diagram of the thirty-fifth type of truss provided in this application embodiment;

[0122] Figure 58 This is a structural schematic diagram of the thirty-sixth type of truss provided in the embodiments of this application;

[0123] Figure 59A left-side structural schematic diagram of the thirty-sixth type of truss provided in this application embodiment;

[0124] Figure 60 A left-side structural schematic diagram of the thirty-seventh type of truss provided in this application embodiment;

[0125] Figure 61 This is a structural schematic diagram of the thirty-eighth type of truss provided in the embodiments of this application;

[0126] Figure 62 A left-side structural schematic diagram of the thirty-eighth type of truss provided in this application embodiment;

[0127] Figure 63 This is a structural schematic diagram of the thirty-ninth type of truss provided in the embodiments of this application;

[0128] Figure 64 A left-side structural schematic diagram of the thirty-ninth type of truss provided in this application embodiment;

[0129] Figure 65 This is a structural schematic diagram of the fortieth type of truss provided in the embodiments of this application;

[0130] Figure 66 This is a front view structural diagram of the fortieth type of truss provided in the embodiments of this application;

[0131] Figure 67 A top view of the 40th type of truss provided in this application embodiment;

[0132] Figure 68 A left-side structural schematic diagram of the fortieth type of truss provided in the embodiments of this application;

[0133] Figure 69 A left-side structural schematic diagram of the forty-first truss provided in this application embodiment;

[0134] Figure 70 A left-side structural schematic diagram of the forty-second type of truss provided in this application embodiment;

[0135] Figure 71 This is a left-side structural schematic diagram of the forty-third type of truss provided in the embodiments of this application;

[0136] Figure 72 A left-side structural schematic diagram of the forty-fourth type of truss provided in this application embodiment;

[0137] Figure 73 This is a left-view structural schematic diagram of the forty-fifth type of truss provided in the embodiments of this application;

[0138] Figure 74 A left-side structural schematic diagram of the forty-sixth type of truss provided in this application embodiment;

[0139] Figure 75 This is a left-side structural schematic diagram of the forty-seventh type of truss provided in the embodiments of this application;

[0140] Figure 76 A left-side structural schematic diagram of the forty-eighth type of truss provided in this application embodiment;

[0141] Figure 77 A left-side structural schematic diagram of the forty-ninth type of truss provided in this application embodiment;

[0142] Figure 78 A left-side structural schematic diagram of the fiftieth type of truss provided in the embodiments of this application;

[0143] Figure 79 A left-side structural schematic diagram of the fifty-first type of truss provided in the embodiments of this application;

[0144] Figure 80 This is a left-side structural schematic diagram of the fifty-second type of truss provided in the embodiments of this application;

[0145] Figure 81 This is a left-side structural schematic diagram of the fifty-third type of truss provided in the embodiments of this application;

[0146] Figure 82 A left-side structural schematic diagram of the fifty-fourth type of truss provided in this application embodiment;

[0147] Figure 83 This is a left-side structural schematic diagram of the fifty-fifth type of truss provided in the embodiments of this application;

[0148] Figure 84 A left-side structural schematic diagram of the fifty-sixth type of truss provided in this application embodiment;

[0149] Figure 85 A left-side structural schematic diagram of the fifty-seventh type of truss provided in this application embodiment;

[0150] Figure 86 A left-side structural schematic diagram of the fifty-eighth type of truss provided in this application embodiment;

[0151] Figure 87 A left-side structural schematic diagram of the fifty-ninth type of truss provided in this application embodiment;

[0152] Figure 88 A left-side structural schematic diagram of the sixtieth type of truss provided in the embodiments of this application;

[0153] Figure 89 A left-side structural schematic diagram of the sixty-first type of truss provided in this application embodiment;

[0154] Figure 90 This is a structural schematic diagram of the sixty-second type of truss provided in the embodiments of this application;

[0155] Figure 91 A left-side structural schematic diagram of the sixty-second type of truss provided in this application embodiment;

[0156] Figure 92 This is a structural schematic diagram of the sixty-third type of truss provided in the embodiments of this application;

[0157] Figure 93 A left-side structural schematic diagram of the sixty-third type of truss provided in this application embodiment;

[0158] Figure 94 This is a schematic diagram of the sixty-fourth type of truss provided in the embodiments of this application;

[0159] Figure 95 A left-side structural schematic diagram of the sixty-fourth type of truss provided in this application embodiment;

[0160] Figure 96 This is a schematic diagram of the sixty-fifth type of truss provided in the embodiments of this application;

[0161] Figure 97 A left-side structural schematic diagram of the sixty-fifth type of truss provided in this application embodiment;

[0162] Figure 98 This is a structural schematic diagram of the sixty-sixth type of truss provided in the embodiments of this application;

[0163] Figure 99 A left-view structural schematic diagram of the sixty-sixth type of truss provided in the embodiments of this application;

[0164] Figure 100 This is a structural schematic diagram of the sixty-seventh type of truss provided in the embodiments of this application;

[0165] Figure 101 A left-side structural schematic diagram of the sixty-seventh type of truss provided in this application embodiment;

[0166] Figure 102 This is a structural schematic diagram of the sixty-eighth type of truss provided in the embodiments of this application;

[0167] Figure 103 A left-side structural schematic diagram of the sixty-eighth type of truss provided in this application embodiment;

[0168] Figure 104 This is a schematic diagram of the sixty-ninth type of truss provided in the embodiments of this application;

[0169] Figure 105 A left-side structural schematic diagram of the sixty-ninth type of truss provided in this application embodiment;

[0170] Figure 106 This is a structural schematic diagram of the seventieth type of truss provided in the embodiments of this application;

[0171] Figure 107 A left-side structural schematic diagram of the seventieth type of truss provided in the embodiments of this application;

[0172] Figure 108 This is a schematic diagram of the seventy-first type of truss provided in the embodiments of this application;

[0173] Figure 109 A left-side structural schematic diagram of the seventy-first type of truss provided in this application embodiment;

[0174] Figure 110 This is a schematic diagram of the seventy-second type of truss provided in the embodiments of this application;

[0175] Figure 111 A left-side structural schematic diagram of the seventy-second type of truss provided in this application embodiment;

[0176] Figure 112 This is a structural schematic diagram of the seventy-third type of truss provided in the embodiments of this application;

[0177] Figure 113 A left-side structural schematic diagram of the seventy-third type of truss provided in this application embodiment;

[0178] Figure 114 This is a schematic diagram of the seventy-fourth type of truss provided in the embodiments of this application;

[0179] Figure 115 A top view of the seventy-fourth type of truss provided in this application embodiment;

[0180] Figure 116 This is a structural diagram of a plate structure made of metal plate, provided as an embodiment of this application;

[0181] Figure 117 This is a left-side structural diagram of a plate structure made of metal plate, provided as an embodiment of this application.

[0182] Figure 118 for Figure 117 A magnified view of a section at point A in the middle;

[0183] Figure 119 This is a left-side structural diagram of another plate structure provided in an embodiment of this application, where the plate structure is a metal plate;

[0184] Figure 120 for Figure 119 A magnified view of a section at point B in the middle;

[0185] Figure 121 A left-side structural schematic diagram of the first type of floor slab provided in this application embodiment;

[0186] Figure 122 This is a structural schematic diagram of the second type of floor slab provided in an embodiment of this application;

[0187] Figure 123 A left-side structural schematic diagram of the second type of floor slab provided in this application embodiment;

[0188] Figure 124 A left-side structural schematic diagram of the third type of floor slab provided in this application embodiment;

[0189] Figure 125 A left-side structural schematic diagram of the fourth type of floor slab provided in this application embodiment;

[0190] Figure 126 A left-side structural schematic diagram of the fifth type of floor slab provided in this application embodiment;

[0191] Figure 127 This is a structural schematic diagram of the sixth type of floor slab provided in the embodiments of this application;

[0192] Figure 128 A left-side structural schematic diagram of the sixth type of floor slab provided in this application embodiment;

[0193] Figure 129 This is a structural schematic diagram of the seventh type of floor slab provided in the embodiments of this application;

[0194] Figure 130 A left-side structural schematic diagram of the seventh type of floor slab provided in this application embodiment;

[0195] Figure 131 A left-side structural schematic diagram of the eighth type of floor slab provided in this application embodiment;

[0196] Figure 132 A left-side structural schematic diagram of the ninth type of floor slab provided in this application embodiment;

[0197] Figure 133 This is a structural schematic diagram of the tenth type of floor slab provided in the embodiments of this application;

[0198] Figure 134 A left-side structural schematic diagram of the tenth type of floor slab provided in this application embodiment;

[0199] Figure 135 A left-side structural schematic diagram of the eleventh type of floor slab provided in this application embodiment;

[0200] Figure 136 This is a structural schematic diagram of the twelfth type of floor slab provided in the embodiments of this application;

[0201] Figure 137 A left-side structural schematic diagram of the twelfth type of floor slab provided in the embodiments of this application;

[0202] Figure 138 A left-side structural schematic diagram of the thirteenth floor slab provided in this application embodiment;

[0203] Figure 139 This is a structural schematic diagram of the fourteenth type of floor slab provided in this application embodiment;

[0204] Figure 140 A left-side structural schematic diagram of the fourteenth floor slab provided in this application embodiment;

[0205] Figure 141 This is a structural schematic diagram of the fifteenth type of floor slab provided in the embodiments of this application;

[0206] Figure 142 A left-side structural schematic diagram of the fifteenth type of floor slab provided in this application embodiment;

[0207] Figure 143 This is a structural schematic diagram of the sixteenth type of floor slab provided in the embodiments of this application;

[0208] Figure 144 A left-side structural schematic diagram of the sixteenth type of floor slab provided in the embodiments of this application;

[0209] Figure 145 This is a structural schematic diagram of the seventeenth type of floor slab provided in the embodiments of this application;

[0210] Figure 146 A left-side structural schematic diagram of the seventeenth type of floor slab provided in this application embodiment;

[0211] Figure 147 A left-side structural schematic diagram of the eighteenth type of floor slab provided in this application embodiment;

[0212] Figure 148 This is a structural schematic diagram of the nineteenth type of floor slab provided in the embodiments of this application;

[0213] Figure 149 A left-side structural schematic diagram of the nineteenth type of floor slab provided in this application embodiment;

[0214] Figure 150 This is a structural schematic diagram of the twentieth type of floor slab provided in the embodiments of this application;

[0215] Figure 151 This is a left-side structural schematic diagram of the twentieth type of floor slab provided in the embodiments of this application;

[0216] Figure 152 A left-side structural schematic diagram of the twenty-first type of floor slab provided in this application embodiment;

[0217] Figure 153 This is a structural schematic diagram of the twenty-second type of floor slab provided in the embodiments of this application;

[0218] Figure 154 This is a left-side structural schematic diagram of the twenty-second type of floor slab provided in this application embodiment;

[0219] Figure 155 This is a structural schematic diagram of the twenty-third type of floor slab provided in the embodiments of this application;

[0220] Figure 156 This is a left-side structural schematic diagram of the twenty-third type of floor slab provided in this application embodiment;

[0221] Figure 157 This is a structural schematic diagram of the twenty-fourth type of floor slab provided in the embodiments of this application;

[0222] Figure 158 This is a left-side structural schematic diagram of the twenty-fourth type of floor slab provided in this application embodiment;

[0223] Figure 159 This is a left-side structural schematic diagram of the twenty-fifth type of floor slab provided in the embodiments of this application;

[0224] Figure 160 This is a left-view structural schematic diagram of the twenty-sixth type of floor slab provided in the embodiments of this application;

[0225] Figure 161 This is a schematic diagram of the main structure of the twenty-seventh type of floor slab provided in the embodiments of this application;

[0226] Figure 162 A structural schematic diagram of the twenty-eighth type of floor slab provided in this application embodiment.

[0227] Figure 163 This is a left-side structural schematic diagram of the twenty-eighth type of floor slab provided in the embodiments of this application;

[0228] Figure 164 This is a structural schematic diagram of the twenty-ninth type of floor slab provided in the embodiments of this application;

[0229] Figure 165 This is a left-side structural schematic diagram of the twenty-ninth type of floor slab provided in this application embodiment.

[0230] Figure label:

[0231] 1- Truss;

[0232] 11-Steel top chord; 111-Main body; 1111-Groove; 112-Extension; 1121-Edge;

[0233] 12-Abdominal fascia; 121-Periodic structure; 1211-Upper reverse bend; 1212-Main trunk; 1213-Lower reverse bend;

[0234] 13-Concrete; 14-The first lower string reinforcement; 15-The second lower string reinforcement; 16-The third lower string reinforcement; 17-Reinforcement rib;

[0235] 2-Slab structure; 21-Protruding rib; 22-First reinforcing bar; 23-Second reinforcing bar; 24-Concrete base slab;

[0236] 3-Supporting structure; 31-First rib; 32-Second rib; 33-Connecting plate; 34-Third rib; 35-Fourth rib. Detailed Implementation

[0237] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0238] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in the specification of this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by the art. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" can be implemented as "A," or as "B," or as "A and B."

[0239] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0240] In existing technologies, trusses typically use steel bars or steel pipes as the top chord. When steel bars are used as the top chord, if smaller diameter bars are selected, the spacing of the bottom ends of the web members along the first direction (such as the transverse direction) is shorter, resulting in a smaller force transmission area between the truss and the bottom plate structure. This leads to deformation and stress concentration under load, reducing overall stability and resulting in poor load-bearing capacity and safety. If larger diameter bars are selected, it is easy to cause waste.

[0241] When steel pipes are used as the top chord, their larger diameter enhances the overall stability of the truss. However, this larger diameter also reduces the distance between the centerline of the top chord and the bottom plate structure, resulting in a decrease in the truss's moment of inertia and consequently, a reduction in its bending strength.

[0242] The technical solution of this application and how it solves the above-mentioned technical problems are described in detail below with specific embodiments. It should be noted that the following embodiments can be referenced, borrowed, or combined with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be described again.

[0243] This application provides a truss 1, such as... Figure 1-113 As shown, the truss 1 includes a steel top chord 11 and two web ribs 12.

[0244] The steel upper chord 11 includes a main body 111 and two extensions 112. The two extensions 112 are disposed on both sides of the main body 111 along a first direction. The main body 111 is strip-shaped, and the first direction is perpendicular to the second direction in which the main body 111 extends. In a plane perpendicular to the extension direction of the main body 111, there is an angle between the main body 111 and the extensions 112.

[0245] Two ribs 12, the overall length of which extends along a second direction, are located at least partially below the upper steel chord 11; along the second direction, the ribs 12 include a plurality of periodic structures 121 arranged in sequence, each periodic structure 121 including an upper reverse bend portion 1211, a main body 1212 and a lower reverse bend portion 1213 arranged in sequence; the upper reverse bend portion 1211 is fixed to at least one of the main body portion 111 and the extension portion 112.

[0246] In this embodiment, two extensions 112 of the steel upper chord 11 are disposed on both sides of the strip-shaped main body 111 of the steel upper chord 11 along a first direction. In a plane perpendicular to the extension direction of the main body 111, there is an angle between the main body 111 and the extensions 112. The web rib 12 has a plurality of periodic structures 121 distributed sequentially along a second direction. The periodic structure 121 includes an upper reverse bend 1211, a main body 1212 and a lower reverse bend 1213 distributed sequentially. The upper reverse bend 1211 is fixed to at least one of the main body 111 and the extensions 112, so that the distance between the lower reverse bends 1213 at the bottom of the two web ribs 12 along the first direction is large, so that the force transmission area between the truss 1 and the bottom plate structure 2 is large, so that the force is more reasonable, thereby improving the overall stability of the truss 1. The bends at the top of the other two web reinforcements are connected to the steel top chord, which makes the spacing between the web reinforcements on the steel top chord significantly smaller than that of traditional steel (steel pipe) trusses. This reduces the length of unrestrained members and improves stability.

[0247] Furthermore, in this embodiment, the contact point between the upper steel chord 11 and the upper reverse bend 1211 is a plane, which facilitates welding. In addition, the upper steel chord 11 and the upper reverse bend 1211 have a line-to-surface contact, resulting in a large contact area and thus greater strength in the welded area, thereby improving the performance of the connection area.

[0248] Optionally, the manufacturing method of truss 1 in this application embodiment includes: mechanically unwinding and rolling coiled steel strip into steel top chords 11 of different shapes as described in this application; simultaneously straightening two coiled steel bars and repeatedly bending them to form wavy web reinforcement 12; symmetrically bending the upper reverse bending portions 1211 of the two web reinforcement 12 inwards, so that there is an angle between the upper reverse bending portions 1211 and the main chord 1212 in a plane perpendicular to the main body portion 111; and welding the upper reverse bending portions 1211 to the main body portion 111 or the extension portion 112 of the steel top chord 11. The manufacturing process of this application embodiment can be continuous. If the top chord is a steel pipe or a steel bar with a diameter greater than 12 (generally not exceeding 12 meters in length), continuous production is not possible.

[0249] Optionally, in optional embodiments of this application, such as Figure 1-85 As shown, in a plane perpendicular to the extension direction of the main body 111, there is an angle between the upper reverse bend 1211 and the main body 1212.

[0250] The upper reverse bend portion 1211 is fixed to the upper or lower surface of the main body portion 111, or at least the top end of the upper reverse bend portion 1211 is fixedly connected to the extension portion 112, and the upper reverse bend portion 1211 is parallel to at least a portion of the main body portion 111.

[0251] The two abdominal muscles 12, either pair of upper inverted bends 1211, are either separated from or connected to each other.

[0252] In this embodiment, the angle between the upper reverse bend 1211 and the main body 1212 is an obtuse angle. The upper reverse bend 1211 is bent parallel to a portion of the main body 111, and is welded to the upper or lower surface of the main body 111 by resistance welding, or to the lower surface of the extension 112 by resistance welding. Since the welding area between the upper reverse bend 1211 and the main body 111 or the extension 112 is a line-to-surface connection, the contact area is large, resulting in greater strength of the welding area and thus improving the performance of the connection area.

[0253] Furthermore, in this embodiment, the upper reverse bend portion 1211 (i.e., the reinforcing bar) of the web reinforcement 12 formed by bending round steel bars is attached to the surface of the main body portion 111 (i.e., the steel plate) of the steel upper chord 11 formed by strip steel to form a composite structure. The reinforcing bar is equivalent to forming a mesh stiffening rib on the surface of the steel plate, which increases the stiffness of the steel upper chord 11.

[0254] Furthermore, compared to the truss structure with steel pipes as the top chord in the prior art, the embodiments of this application do not require additional welding materials. Moreover, when resistance welding is used in the embodiments of this application, the welding materials are derived from the steel top chord 11 and the web reinforcement 12, thereby improving the yield and production efficiency, and simplifying the operation. Simultaneously, since resistance welding does not require additional welding materials, it saves costs.

[0255] In this embodiment of the application, the upper reverse bend 1211 is bent to be parallel to part of the main body 111. Any pair of upper reverse bends 1211 of the two web ribs 12 are separated from each other by a certain distance or connected to each other. The upper reverse bend 1211 acts as a reinforcing rib for the main body 111 or the extension 112, increasing the rigidity of the steel upper chord 11.

[0256] It should be noted that the upper or lower surface of the main body 111 in this application is a plane.

[0257] Optionally, in optional embodiments of this application, such as Figure 86-113 As shown, the upper reverse bend portion 1211 is coplanar with the main body 1212, and the upper reverse bend portion 1211 is fixedly connected to at least a portion of the extension portion 112.

[0258] In this embodiment, the extension 112 is strip-shaped, and the upper reverse bend 1211 is coplanar with the main body 1212. The upper reverse bend 1211 is fixed to the outer or inner side of the extension 112 by resistance welding. Since the welding area between the upper reverse bend 1211 and the extension 112 is a line-to-surface connection, the contact area is large, which makes the strength of the welding area greater and thus improves the performance of the connection area.

[0259] Optionally, in optional embodiments of this application, such as Figure 54-71 and Figure 106-113 As shown, the main body 111 includes at least two grooves 1111, which are arranged along a second direction.

[0260] In this embodiment, the main body 111 is provided with a plurality of grooves 1111, which are arranged along the extending direction of the main body 111. By providing a plurality of grooves 1111 on the main body 111, it is equivalent to increasing the thickness of the main body 111 with the same amount of steel, thereby increasing the thickness of the steel upper chord 11, increasing the thickness-to-length ratio of the steel upper chord 11, and further increasing the axial bending resistance of the steel upper chord 11, so that the truss 1 as a whole has better stability.

[0261] Optionally, in optional embodiments of this application, such as Figure 1-64 and Figure 86-113 As shown, the extension 112 is strip-shaped. The angle between the main body 111 and the extension 112 is an obtuse angle.

[0262] In this embodiment, the main body 111 and the extension 112 of the steel top chord 11 form a downward-opening first groove. In a plane perpendicular to the extension direction of the main body 111, the cross-section of the first groove is trapezoidal. Compared with the steel top chord structure of the prior art, the steel top chord 11 of this embodiment is equivalent to increasing the thickness of the steel top chord 11 while using the same amount of steel, thus increasing the thickness-to-length ratio of the steel top chord 11 and consequently increasing the axial bending resistance of the steel top chord 11, resulting in better overall stability of the truss 1.

[0263] Optionally, in optional embodiments of this application, such as Figures 65-71 As shown, the main body 111 includes at least two grooves 1111, which are arranged along the second direction; the extension 112 is strip-shaped, and the planar area between any two adjacent grooves 1111 of the main body 111 is coplanar with the extension 1112; the upper reverse bend 1211 is fixed to the upper or lower surface of the extension 112.

[0264] In this embodiment, the main body 111 includes a groove 1111 and a planar area between any two adjacent grooves 1111. The extension 112 is the area remaining excluding the main body 111. The planar area between any two adjacent grooves 1111 of the main body 111 is coplanar with the extension 112. By providing multiple grooves 1111 on the main body 111, it is equivalent to increasing the thickness of the main body 111 with the same amount of steel, thereby increasing the thickness of the upper steel chord 11, increasing the thickness-to-length ratio of the upper steel chord 11, and further increasing the axial bending resistance of the upper steel chord 11, so that the truss 1 as a whole has better stability.

[0265] Furthermore, with the same amount of steel used, the distance between the center line of the upper steel chord 11 and the bottom plate structure 2 in this embodiment is larger, resulting in a larger moment of inertia of the truss 1, thereby improving the bending strength of the truss 1.

[0266] In this embodiment, the upper reverse bend 1211 is parallel to the extension 112 and at least part of the main body 111. The upper reverse bend 1211 and the extension 112 are connected by a line and a surface, which results in a larger contact area and thus increases the connection strength.

[0267] Optionally, in optional embodiments of this application, such as Figure 35-49 As shown, the end of the extension 112 away from the main body 111 is bent to form an edge portion 1121.

[0268] In this embodiment, the edge portion 1121 is parallel to the unbent area of ​​the extension portion 112, and the included angle between the edge portion 1121 and the main body portion 111 includes zero degrees. By bending the end of the extension portion 112 away from the main body portion 111 to form the edge portion 1121, the stress of the steel upper chord 11 is concentrated in the edge portion 1121 when it is under pressure, thereby reducing the force on the main body portion 111, improving the load-bearing capacity of the main body portion 111, and thus improving the stiffness of the steel upper chord 11.

[0269] Optionally, in optional embodiments of this application, such as Figures 50-53 As shown, the end of the extension 112 away from the main body 111 is bent to form an edge portion 1121, and the edge portion 1121 is parallel to the main body 111.

[0270] In this embodiment, the edge portion 1121 is parallel to the main body portion 111, which can improve the strength of the steel upper chord 11, thereby improving the load-bearing capacity and tensile strength of the steel upper chord 11.

[0271] Optionally, in optional embodiments of this application, such as Figure 1-64 As shown, the main body 111 and the extension 112 enclose each other to form a first groove with the opening facing downward. The upper reverse bending part 1121 is fixed to the upper or lower surface of the main body 111, and the extension 112 is fixedly connected to the main body 1212.

[0272] In this embodiment, the main body 111 and the extension 112 of the steel top chord 11 form a downward-opening first groove. In a plane perpendicular to the extension direction of the main body 111, the cross-section of the first groove is trapezoidal. Compared with the steel top chord structure of the prior art, the steel top chord 11 of this embodiment is equivalent to increasing the thickness of the steel top chord 11 while using the same amount of steel, thus increasing the thickness-to-length ratio of the steel top chord 11 and consequently increasing the axial bending resistance of the steel top chord 11, resulting in better overall stability of the truss 1.

[0273] Optionally, in optional embodiments of this application, such as Figures 72-76 As shown, the main body 111 and the extension 112 are located on the same plane. The end of the extension 112 away from the main body 111 is bent to form an edge 1121. The upper reverse bend 1211 is fixed to the lower surface of at least one of the main body 111 and the extension 112, or the upper reverse bend 1211 is fixed to the lower surface of the edge 1211.

[0274] Or, such as Figure 77-80 As shown, the main body 111 and the extension 112 are located on the same plane. The upper reverse bend 1211 is fixed to the lower surface of at least one of the main body 111 and the extension 112. The end of the extension 112 away from the main body 111 is curled to form an edge 1121.

[0275] In the embodiments of this application, such as Figures 72-76 As shown, the end of the extension 112 away from the main body 111 is bent to form an edge portion 1121. The edge portion 1121 is parallel to the main body 111. When the edge portion 1121 is located away from the upper reverse bend portion 1211, the upper reverse bend portion 1211 is fixed to the lower surface of at least one of the main body 111 and the extension 112. When the edge portion 1121 is located close to the upper reverse bend portion 1211, the upper reverse bend portion 1211 is fixed to the lower surface of the edge portion 1211. In this embodiment, by bending the extension 112, the thickness of the steel upper chord 11 is increased, that is, the thickness-to-length ratio of the steel upper chord 11 is increased, thereby increasing the axial bending resistance of the steel upper chord 11.

[0276] In the embodiments of this application, such as Figure 77-80 As shown, the end of the extension 112 away from the main body 111 is curled to form an edge portion 1121. When the steel upper chord 11 is compressed, the stress is concentrated in the edge portion 1121, thereby reducing the force on the main body 111, improving the load-bearing capacity of the main body 111, and thus improving the stiffness of the steel upper chord 11.

[0277] Optionally, in optional embodiments of this application, such as Figures 81-83 As shown, the upper reverse bend portion 1211 is fixed to the lower surface of the main body portion 111, and the main body portion 111 and the extension portion 112 enclose each other to form a second groove with the opening facing upward.

[0278] The truss 1 also includes concrete 13 filled in the second trench.

[0279] In this embodiment, the main body 111 and the extension 112 are perpendicular to each other, and the main body 111 and the extension 112 form an upward-opening second groove. The second groove is filled with concrete 13, which can improve the strength of the steel upper chord 11, thereby improving the load-bearing capacity and compressive strength of the steel upper chord 110.

[0280] Optionally, in optional embodiments of this application, such as Figure 11-34 , Figures 40-49 , Figure 50 , Figures 58-64 and Figure 69-113 As shown, truss 1 also includes at least one of the following:

[0281] The first lower chord rib 14 is fixed to the bottom of the lower reverse bend portion 1213; the first lower chord rib 14 extends along the second direction.

[0282] The second lower chord 15 is fixed to the outside of the main body 1212 and connected to multiple bottoms of the main body 1212 at a designed distance; the second lower chord 15 extends along the second direction.

[0283] The third lower chord 16 is fixed to the inside of the main body 1212 and connected to multiple bottoms of the main body 1212 at a designed distance; the third lower chord 16 extends along the second direction.

[0284] At least one reinforcing rib 17 is located on the upper or lower surface of the main body 111.

[0285] In this embodiment, the scheme of setting a lower chord reinforcement on the truss 1 includes: setting only a second lower chord reinforcement 15, setting only a third lower chord reinforcement 16, setting both a second lower chord reinforcement 15 and a third lower chord reinforcement 16, and setting both a first lower chord reinforcement 14 and a third lower chord reinforcement 16. Setting a lower chord reinforcement on the truss 1 can improve the tensile strength of the lower chord portion of the truss 1. The lower chord portion includes a lower inverted bend 1213 and lower chord reinforcement.

[0286] In this embodiment of the application, providing reinforcing ribs 17 on the upper or lower surface of the main body 111 can increase the rigidity of the steel upper chord 11.

[0287] Optionally, in optional embodiments of this application, such as Figure 1-85 and Figures 114-115 As shown, truss 1 also includes at least one of the following:

[0288] At least one upper inverted bend 1211 of any abdominal rib 12 is at least one of a triangle, a trapezoid, and an inverted trapezoid in a plane parallel to the extension direction of the main body 111.

[0289] At least one downward curved portion 1213 of any abdominal rib 12 is at least one of a triangle, a trapezoid, and an inverted trapezoid in a plane parallel to the extension direction of the main body portion 111.

[0290] In this embodiment, the projection of the upper reverse bend 1211 onto a plane parallel to the extending direction of the main body 111 is at least one of a triangle, a trapezoid, and an inverted trapezoid, which makes the contact area between the upper reverse bend 1211 and the main body 111 larger, increases the connection strength between the main body 111 and the upper reverse bend 1211, and improves the bonding between the upper reverse bend 1211 and the main body 111.

[0291] In the embodiments of this application, Figure 1-85 The upper reverse bend 1211 and the lower reverse bend 1213 are both triangular in shape in a plane parallel to the extension direction of the main body 111. Figures 114-115 The diagram shows that both the upper reverse bend 1211 and the lower reverse bend 1213 are trapezoidal in shape within a plane parallel to the extending direction of the main body 111. An example of the upper reverse bend 1211 or the lower reverse bend 1213 being an inverted trapezoid in a plane parallel to the extending direction of the main body 111 (not shown in the figures) is also shown. Figures 114-115 similar.

[0292] It should be noted that, Figure 1-85 The upper reverse bend portion 1211 or the lower reverse bend portion 1213 in the corresponding embodiment can also be as follows Figures 114-115 As shown, the upper reverse bend 1211 is trapezoidal in a plane parallel to the extending direction of the main body 111. In the embodiments of this application, the upper reverse bend 1211 and the lower reverse bend 1213 of any web rib 12 may have the same or different shapes in a plane parallel to the extending direction of the main body 111.

[0293] The following description, in conjunction with the accompanying drawings, illustrates various specific structures of truss 1. For ease of understanding, this application only describes the different structures among the various embodiments; other structures that are not covered herein are the same or similar and will not be described in detail here.

[0294] Optionally, Figure 1-5 The structure of a first truss 1 according to an embodiment of this application is shown. The truss 1 includes a steel top chord 11 and two web ribs 12. The extensions 112 are strip-shaped, and the two extensions 112 are arranged on both sides of the main body 111 along a first direction. The included angle between the main body 111 and the extensions 112 is an obtuse angle. The main body 111 and the two extensions 112 enclose a first groove with an opening facing downward. There is an included angle between the upper reverse bending portion 1211 and the main body 1212. The upper reverse bending portion 1211 is fixed to the upper surface of the main body 111. The extensions 112 are fixedly connected to the main body 1212. Any pair of upper reverse bending portions 1211 of the two web ribs 12 are separated from each other.

[0295] Optionally, Figure 6-7 The second type of truss 1 according to the present application is shown. The difference between the second type of truss 1 and the first type of truss 1 is that the upper reverse bending portion 1211 is fixed to the lower surface of the main body portion 111.

[0296] Optionally, Figure 8-9 The third type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that any pair of upward reverse bending portions 1211 of the two web ribs 12 are connected.

[0297] Optionally, Figure 10 The fourth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the upper reverse bending portion 1211 is fixed to the lower surface of the main body portion 111, and any pair of upper reverse bending portions 1211 of the two web ribs 12 are connected.

[0298] Optionally, Figure 11 The fifth type of truss 1 according to the present application is shown. The difference from the fourth type of truss 1 is that either of the two web ribs 12 has a pair of upward reverse bending portions 1211 that are separated from each other, and a second lower chord rib 15 is provided on the outside of the main truss 1212.

[0299] Optionally, Figure 12-13 The sixth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that a third lower chord 16 is provided on the inner side of the main trunk 1212.

[0300] Optionally, Figure 14-15 The seventh type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the upper reverse bending portion 1211 is fixed to the lower surface of the main body portion 111, and a third lower chord rib 16 is provided on the inner side of the main body portion 1212.

[0301] Optionally, Figure 16-17 The eighth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that any pair of upper reverse bending portions 1211 of the two web ribs 12 are connected, and a third lower chord rib 16 is provided on the inner side of the main body 1212.

[0302] Optionally, Figure 18 The ninth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the upper reverse bending portion 1211 is fixed to the lower surface of the main body portion 111, any pair of upper reverse bending portions 1211 of the two web ribs 12 are connected, and a third lower chord rib 16 is provided on the inner side of the main body 1212.

[0303] Optionally, Figures 19-20 The tenth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that a third lower chord 16 is provided on the inner side of the main trunk 1212, and a first lower chord 14 is provided at the bottom of the lower reverse bend 1213.

[0304] Optionally, Figure 21-22 The eleventh type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the upper reverse bend portion 1211 is fixed to the lower surface of the main body portion 111, a third lower chord rib 16 is provided on the inner side of the main body portion 1212, and a first lower chord rib 14 is provided at the bottom of the lower reverse bend portion 1213.

[0305] Optionally, Figure 23-24 The twelfth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that any pair of upper reverse bends 1211 of the two web ribs 12 are connected, a third lower chord rib 16 is provided on the inner side of the main body 1212, and a first lower chord rib 14 is provided at the bottom of the lower reverse bend rib 1213.

[0306] Optionally, Figure 25The thirteenth truss 1 of this application embodiment is shown. The difference from the first truss 1 is that the upper reverse bend portion 1211 is fixed to the lower surface of the main body portion 111, any pair of upper reverse bend portions 1211 of the two web ribs 12 are connected, a third lower chord rib 16 is provided on the inner side of the main body 1212, and a first lower chord rib 14 is provided at the bottom of the lower reverse bend portion 1213.

[0307] Optionally, Figure 26-28 The fourteenth truss 1 of the present application is shown. The difference from the first truss 1 is that there is an angle between the lower inverted bend 1213 and the main body 1212. The angle between the lower inverted bend 1213 and the main body 1212 includes an obtuse angle. The lower inverted bend 1213 is parallel to at least a portion of the main body 111. A second lower chord 15 is provided on the outside of the main body 1212.

[0308] Optionally, Figures 29-30 The fifteenth type of truss 1 according to the present application is shown. The difference between it and the fourteenth type of truss 1 is that the upper reverse bend portion 1211 is fixed to the lower surface of the main body portion 111.

[0309] Optionally, Figures 31-32 The sixteenth type of truss 1 shown in this application is different from the fourteenth type of truss 1 in that any pair of upward reverse bending portions 1211 of the two web ribs 12 are connected.

[0310] Optionally, Figure 33 The seventeenth type of truss 1 according to the present application is shown. The difference from the fourteenth type of truss 1 is that the upper reverse bending portion 1211 is fixed to the lower surface of the main body portion 111, and any pair of upper reverse bending portions 1211 of the two web ribs 12 are connected.

[0311] Optionally, Figure 34 The eighteenth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the upper reverse bending portion 1211 is fixed to the lower surface of the main body portion 111, any pair of upper reverse bending portions 1211 of the two web ribs 12 are connected, and multiple reinforcing ribs 17 are provided on the upper surface of the main body portion 111.

[0312] Optionally, Figures 35-36 The nineteenth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the upper reverse bending portion 1211 is fixed to the lower surface of the main body portion 111, any pair of upper reverse bending portions 1211 of the two web ribs 12 are connected, the end of the extension portion 112 away from the main body portion 111 is bent outward to form an edge portion 1121, the included angle between the edge portion 1121 and the unbent extension portion 112 includes zero degrees, and the edge portion 1121 is located on the side away from the web rib 12.

[0313] Optionally, Figure 37The twentieth type of truss 1 shown in this application differs from the nineteenth type of truss 1 in that either pair of upper reverse bending portions 1211 of the two web ribs 12 are separated.

[0314] Optionally, Figure 38 The twenty-first truss 1 of the present application is shown. The difference from the nineteenth truss 1 is that the upper reverse bending portion 1211 is fixed to the upper surface of the main body portion 111, any pair of upper reverse bending portions 1211 of the two web ribs 12 are separated, and the end of the extension portion 112 away from the main body portion 111 is bent inward to form an edge portion 1121.

[0315] Optionally, Figure 39 The twenty-second type of truss 1 according to the present application is shown. The difference from the nineteenth type of truss 1 is that the upper reverse bending portion 1211 is fixed to the upper surface of the main body portion 111, and the end of the extension portion 112 away from the main body portion 111 is bent inward to form an edge portion 1121.

[0316] Optionally, Figures 40-41 The twenty-third type of truss 1 shown in this application embodiment differs from the nineteenth type of truss 1 in that a third lower chord 16 is provided on the inner side of the main trunk 1212.

[0317] Optionally, Figures 42-43 The twenty-fourth type of truss 1 according to the present application is shown. The difference between it and the nineteenth type of truss 1 is that the third lower chord 16 is fixed to the inner side of the main trunk 1212, and the first lower chord 14 is fixed to the bottom of the lower reverse bend 1213.

[0318] Optionally, Figures 44-45 The twenty-fifth type of truss 1 according to the present application is shown. The difference from the nineteenth type of truss 1 is that the second lower chord 15 is fixed to the outside of the main body 1212, the lower reverse bend 1213 has an angle with the main body 1212, the angle between the lower reverse bend 1213 and the main body 1212 includes an obtuse angle, and the lower reverse bend 1213 is parallel to at least part of the main body 111.

[0319] Optionally, Figure 46 The twenty-sixth type of truss 1 according to the present application is shown. The difference from the nineteenth type of truss 1 is that either pair of upper reverse bending portions 1211 of the two web ribs 12 are separated, the second lower chord rib 15 is fixed to the outside of the main body 1212, and the third lower chord rib 16 is fixed to the inside of the main body 1212.

[0320] Optionally, Figure 47The twenty-seventh type of truss 1 according to the present application is shown. The difference from the nineteenth type of truss 1 is that the upper reverse bend portion 1211 is fixed to the upper surface of the main body portion 111, the end of the extension portion 112 away from the main body portion 111 is bent inward to form the edge portion 1121, any pair of upper reverse bend portions 1211 of the two web ribs 12 are separated, the first lower chord rib 15 is fixed to the bottom of the lower reverse bend portion 1213, and the third lower chord rib 16 is fixed to the inner side of the main body 1212.

[0321] Optionally, Figure 48 The twenty-eighth type of truss 1 according to the present application is shown. The difference from the nineteenth type of truss 1 is that the upper reverse bend portion 1211 is fixed to the upper surface of the main body portion 111, the end of the extension portion 112 away from the main body portion 111 is bent inward to form the edge portion 1121, the first lower chord rib 15 is fixed to the bottom of the lower reverse bend portion 1213, and the third lower chord rib 16 is fixed to the inner side of the main body 1212.

[0322] Optionally, Figure 49 The twenty-ninth type of truss 1 according to the present application is shown. The difference from the nineteenth type of truss 1 is that either of the two web ribs 12 has a pair of upward reverse bending portions 1211 separated, and the upper surface of the main body 111 is provided with multiple reinforcing ribs 17.

[0323] Optionally, Figure 50 The thirtieth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the upper reverse bending portion 1211 is fixed to the lower surface of the main body portion 111, and the end of the extension portion 112 away from the main body portion 111 is bent outward to form an edge portion 1121, which is parallel to the main body portion 111.

[0324] Optionally, Figure 51 The present application shows a truss 1 of the thirty-first type, which differs from the thirtieth type truss 1 in that the upper surface of the main body 111 is provided with a plurality of reinforcing ribs 17.

[0325] Optionally, Figure 52 The thirty-second type of truss 1 according to the present application is shown. The difference from the thirty-first type of truss 1 is that the upper reverse bending portion 1211 is fixed to the upper surface of the main body portion 111, and the end of the extension portion 112 away from the main body portion 111 is bent inward to form an edge portion 1121, which is parallel to the main body portion 111.

[0326] Optionally, Figure 53The thirty-third type of truss 1 shown in this application differs from the thirty-first type of truss 1 in that the upper reverse bending portion 1211 is fixed to the upper surface of the main body portion 111, any pair of upper reverse bending portions 1211 of the two web ribs 12 are connected, and the end of the extension portion 112 away from the main body portion 111 is bent inward to form an edge portion 1121, which is parallel to the main body portion 111.

[0327] Optionally, Figures 54-56 The thirty-fourth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the main body 111 includes at least two grooves 1111.

[0328] Optionally, Figure 57 The thirty-fifth type of truss 1 shown in this application differs from the thirty-fourth type of truss 1 in that the upper reverse bend portion 1211 is fixed to the lower surface of the main body portion 111.

[0329] Optionally, Figures 58-59 The thirty-sixth type of truss 1 according to the present application is shown. The difference between the thirty-fourth type of truss 1 and the third lower chord is that the third lower chord is fixed to the inner side of the main trunk 1212.

[0330] Optionally, Figure 60 The thirty-seventh type of truss 1 according to the present application is shown. The difference from the thirty-fourth type of truss 1 is that the upper reverse bend portion 1211 is fixed to the lower surface of the main body portion 111, and the third lower chord rib 16 is fixed to the inner side of the main body 1212.

[0331] Optionally, Figures 61-62 The thirty-eighth type of truss 1 according to the present application is shown. The difference between it and the thirty-fourth type of truss 1 is that the first lower chord 14 is fixed to the bottom of the lower reverse bend 1213 and the third lower chord 16 is fixed to the inner side of the main body 1212.

[0332] Optionally, Figures 63-64 The thirty-ninth type of truss 1 shown in this application differs from the thirty-fourth type of truss 1 in that the second lower chord 15 is fixed to the outside of the main body 1212, the included angle between the lower reverse bend 1213 and the main body 1212 includes an obtuse angle, and the lower reverse bend 1213 is parallel to at least a portion of the main body 111.

[0333] Optionally, Figures 65-68 The fortieth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the main body 111 includes at least two grooves 1111, the at least two grooves 1111 are arranged along the second direction, the planar area between any two adjacent grooves 1111 of the main body 111 is located on the same plane as the extension 112, and the upper reverse bending portion 1211 is fixed to the lower surface of the extension 112.

[0334] Optionally, Figure 69 The forty-first truss 1 of this application is shown, which differs from the forty-first truss 1 in that the third lower chord 16 is fixed to the inner side of the main trunk 1212.

[0335] Optionally, Figure 70 The forty-second type of truss 1 according to the present application is shown. The difference from the forty-first type of truss 1 is that the upper reverse bend portion 1211 is fixed to the upper surface of the extension portion 112.

[0336] Optionally, Figure 71 The forty-third type of truss 1 according to the present application is shown. The difference from the fortyth type of truss 1 is that the upper reverse bend portion 1211 is fixed to the upper surface of the extension portion 112, and the third lower chord rib 16 is fixed to the inner side of the main body 1212.

[0337] Optionally, Figure 72 The forty-fourth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the main body 111 and the extension 112 are located in the same plane. The end of the extension 112 away from the main body 111 is bent downward to form an edge 1121. The edge 1121 is parallel to the main body 111. The angle between the edge 1121 and the unbent area of ​​the extension 112 includes zero degrees. The upper reverse bend 1211 is fixed to the lower surface of the edge 1121. Any pair of upper reverse bends 1211 of the two web ribs 12 are connected.

[0338] Optionally, Figure 73 The forty-fifth type of truss 1 shown in this application differs from the forty-fourth type of truss 1 in that the second lower chord 15 is fixed to the outside of the main trunk 1212.

[0339] Optionally, Figure 74 The forty-sixth type of truss 1 according to the present application is shown. The difference between it and the forty-fourth type of truss 1 is that the upper surface of the main body 111 is provided with multiple reinforcing ribs 17.

[0340] Optionally, Figure 75 The forty-seventh type of truss 1 shown in this application differs from the forty-fourth type of truss 1 in that the end of the extension 112 away from the main body 111 is bent upward to form an edge 1121, the upper reverse bend 1211 is fixed to the lower surface of at least one of the main body 111 and the extension 112, and any pair of upper reverse bends 1211 of the two web ribs 12 are separated.

[0341] Optionally, Figure 76The forty-eighth type of truss 1 according to the present application is shown. The difference from the forty-fourth type of truss 1 is that the end of the extension 112 away from the main body 111 is bent upward to form an edge 1121, the upper reverse bend 1211 is fixed to the lower surface of at least one of the main body 111 and the extension 112, any pair of upper reverse bends 1211 of the two web ribs 12 are separated, and the third lower chord rib 16 is fixed to the inner side of the main body 1212.

[0342] Optionally, Figure 77 The forty-ninth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the main body 111 and the extension 112 are located on the same plane, the upper reverse bend 1211 is fixed to the lower surface of at least one of the main body 111 and the extension 112, and the end of the extension 112 away from the main body 111 is curled to form an edge 1121, and the edge 1121 is located on the side of the main body 111 near the web rib 12.

[0343] Optionally, Figure 78 The fiftieth type of truss 1 shown in this application differs from the forty-ninth type of truss 1 in that the second lower chord 15 is fixed to the outside of the main trunk 1212.

[0344] Optionally, Figure 79 The fifty-first type of truss 1 shown in this application differs from the forty-ninth type of truss 1 in that the edge portion 1121 is located on the side of the main body portion 111 away from the web rib 12.

[0345] Optionally, Figure 80 The fifty-second type of truss 1 shown in this application differs from the forty-ninth type of truss 1 in that the edge portion 1121 is located on the side of the main body portion 111 away from the web rib 12, and the third lower chord rib 16 is fixed to the inner side of the main body 1212.

[0346] Optionally, Figure 81 The fifty-third type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the upper reverse bending portion 1211 is fixed to the lower surface of the main body portion 111, the main body portion 111 is perpendicular to the extension portion 112, the main body portion 111 and the extension portion 112 enclose to form a second groove with an upward opening, the concrete 13 is filled in the second groove, and the reinforcing rib 17 is provided in the concrete 13.

[0347] Optionally, Figure 82 The fifty-fourth type of truss 1 according to the present application is shown. The difference from the fifty-third type of truss 1 is that the second lower chord 15 is provided on the outside of the main trunk 1212.

[0348] Optionally, Figure 83The fifty-fifth type of truss 1 shown in this application is different from the fifty-third type of truss 1 in that the third lower chord 16 is disposed on the inner side of the main trunk 1212.

[0349] Optionally, Figure 84 The fifty-sixth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the main body 111 and the extension 112 are located in the same plane, and the upper reverse bending portion 1211 is fixed to the lower surface of at least one of the main body 111 and the extension 112; in a plane perpendicular to the extension direction of the main body 111, at least two reinforcing ribs 17 are respectively located on the edges of the extension 112 or the main body 111 on both sides, and the reinforcing ribs 17 are located on the upper surface of the main body 111.

[0350] Optionally, Figure 85 The fifty-seventh type of truss 1 according to the present application is shown. The difference between it and the fifty-sixth type of truss 1 is that a reinforcing rib 17 is provided in the middle of the main body 111 in a plane perpendicular to the extension direction of the main body 111. The reinforcing rib 17 is located on the upper surface of the main body 111.

[0351] Alternatively, in some embodiments, the truss 1 differs from the fifty-sixth type of truss 1 in that the upper surface of the main body 111 has no reinforcing ribs 17.

[0352] Optionally, in some embodiments, the truss 1 differs from the fifty-sixth type of truss 1 in that the upper surface of the main body 111 has no reinforcing ribs 17, and a third lower chord rib 16 is provided on the inner side of the main body 1212, and a first lower chord rib 14 is provided at the bottom of the lower reverse bend 1213.

[0353] Optionally, Figure 86 The fifty-eighth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the upper reverse bend portion 1211 is coplanar with the main body 1212, and the upper reverse bend portion 1211 is fixedly connected to the inner side of at least a portion of the extension portion 112.

[0354] Optionally, Figure 87 The fifty-ninth type of truss 1 according to the present application is shown. The difference from the fifty-eighth type of truss 1 is that the third lower chord 16 is fixed to the inner side of the main trunk 1212.

[0355] Optionally, Figure 88 The sixtieth type of truss 1 shown in this application is different from the fifty-eighth type of truss 1 in that the first lower chord 14 is fixed to the bottom of the lower reverse bend 1213 and the third lower chord 16 is fixed to the inner side of the main body 1212.

[0356] Optionally, Figure 89The sixty-first truss 1 of the present application is shown, which differs from the fifty-eighth truss 1 in that the included angle between the lower reverse bend 1213 and the main body 1212 includes an obtuse angle, the lower reverse bend 1213 is parallel to at least part of the main body 111, and the second lower chord 15 is fixed to the outside of the main body 1212.

[0357] Optionally, Figures 90-91 The sixty-second type of truss 1 shown in this application differs from the fifty-eighth type of truss 1 in that the end of the extension 112 away from the main body 111 is bent outward to form an edge 1121, and the edge 1121 is parallel to the main body 111.

[0358] Optionally, Figures 92-93 The sixty-third type of truss 1 shown in this application is different from the sixty-second type of truss 1 in that the third lower chord 16 is fixed to the inner side of the main trunk 1212.

[0359] Optionally, Figures 94-95 The sixty-fourth type of truss 1 according to the present application is shown. The difference from the sixty-second type of truss 1 is that the first lower chord 14 is fixed to the bottom of the lower reverse bend 1213 and the third lower chord 16 is fixed to the inner side of the main body 1212.

[0360] Optionally, Figures 96-97 The sixty-fifth type of truss 1 shown in this application differs from the sixty-second type of truss 1 in that the included angle between the lower inverted bend 1213 and the main body 1212 includes an obtuse angle, the lower inverted bend 1213 is parallel to at least a portion of the main body 111, and the second lower chord 15 is fixed to the outside of the main body 1212.

[0361] Optionally, Figures 98-99 The sixty-sixth type of truss 1 shown in this application differs from the fifty-eighth type of truss 1 in that the upper reverse bend portion 1211 is fixedly connected to the outer side of at least a portion of the extension portion 112, and the end of the extension portion 112 away from the main body portion 111 is bent inward to form an edge portion 1121, which is parallel to the main body portion 111.

[0362] Optionally, Figure 100-101 The sixty-seventh type of truss 1 according to the present application is shown. The difference between the sixty-sixth type of truss 1 and the third lower chord 16 is fixed to the inner side of the main trunk 1212.

[0363] Optionally, Figures 102-103 The sixty-eighth type of truss 1 according to the present application is shown. The difference between the sixty-sixth type of truss 1 is that the first lower chord 14 is fixed to the bottom of the lower reverse bend 1213 and the third lower chord 16 is fixed to the inner side of the main body 1212.

[0364] Optionally, Figures 104-105 The sixty-ninth type of truss 1 shown in this application differs from the sixty-sixth type of truss 1 in that the included angle between the lower inverted bend 1213 and the main body 1212 includes an obtuse angle, the lower inverted bend 1213 is parallel to at least a portion of the main body 111, and the second lower chord 15 is fixed to the outside of the main body 1212.

[0365] Optionally, Figures 106-107 The seventieth type of truss 1 shown in this application differs from the fifty-eighth type of truss 1 in that the main body 111 includes at least two grooves 1111, the at least two grooves 1111 are arranged along a second direction, and the upper reverse bending portion 1211 is fixedly connected to the outer side of at least a portion of the extension portion 112.

[0366] Optionally, Figures 108-109 The seventy-first truss 1 of the present application is shown. The difference between the seventy-first truss 1 and the truss 1 is that the third lower chord 16 is fixed to the inner side of the main trunk 1212.

[0367] Optionally, Figure 110-111 The seventy-second type of truss 1 according to the present application is shown. The difference between it and the seventieth type of truss 1 is that the first lower chord 14 is fixed to the bottom of the lower reverse bend 1213 and the third lower chord 16 is fixed to the inner side of the main body 1212.

[0368] Optionally, Figures 112-113 The seventy-third type of truss 1 shown in this application differs from the seventieth type of truss 1 in that the second lower chord 15 is fixed to the outside of the main body 1212, the included angle between the lower reverse bend 1213 and the main body 1212 includes an obtuse angle, and the lower reverse bend 1213 is parallel to at least a portion of the main body 111.

[0369] Optionally, Figures 114-115 The seventy-fourth type of truss 1 according to the present application is shown. The difference from the first type of truss 1 is that the projection of the upper reverse bending portion 1211 in a plane parallel to the extension direction of the main body portion 111 is trapezoidal, and the third lower chord rib 16 is fixed to the inner side of the main body 1212.

[0370] Based on the same inventive concept, embodiments of this application provide a floor slab, such as... Figure 1-165 As shown, the floor slab includes: a truss 1 according to any of the above embodiments, and a plate structure 2 disposed at the bottom of the truss 1.

[0371] In this embodiment, the upper steel chord 11 of the truss 1 mainly bears the compressive force, and the lower chord of the truss 1 mainly bears the tensile force. In this embodiment, the distance between the center line of the upper steel chord 11 of the truss 1 and the bottom plate structure 2 is large, resulting in a large moment of inertia of the truss 1, which makes the bending strength of the truss 1 greater, thereby improving the performance of the floor slab.

[0372] Optionally, in one embodiment of this application, such as Figure 116-140 As shown, plate structure 2 includes a metal plate.

[0373] Truss 1 includes the third lower chord reinforcement 16.

[0374] The upper surface of the plate structure 2 is provided with a protruding rib 21, and the bottom end of the lower reverse bend 1213 of the web reinforcement 12 of the truss 1 is fixed to the protruding rib 21.

[0375] In this embodiment, the lower inverted bend 1213 of the truss 1 and the main truss 1212 are located on the same plane. A metal plate is directly used as the bottom plate structure 2 to connect with the truss 1, making full use of the tensile strength of the metal plate. This is equivalent to the lower chord of the truss 1 (including the lower inverted bend 1213 and the third lower chord rib 16) and the bottom plate structure 2 jointly bearing the tensile force. The truss 1 and the protruding ribs 21 on the plate structure 2 can be directly welded, which is convenient for construction. The bottom plate structure 2 can also serve as a formwork, eliminating the need for demolding later, simplifying the construction steps and improving construction efficiency.

[0376] Moreover, the metal plate structure 2 can be directly formed with a pressed rib 21. The plate structure 2 becomes thicker at the rib 21, which can improve the local width-to-thickness ratio of the plate structure 2, thereby improving the local stability of the plate structure 2, helping to reduce the deflection of the structure and improve the strength of the plate structure 2.

[0377] In addition, the extension direction of the protruding rib 21 is consistent with the extension direction of the truss 1, that is, the extension direction of the protruding rib 21 is the same as the extension direction of the main body 111 of the truss 1, both extending along the second direction, which can increase the constraint and support in the first direction, thereby improving the overall stiffness of the floor slab and the load-bearing capacity of the structure.

[0378] In the embodiments of this application, such as Figure 116-120 As shown, multiple waist-shaped indentations of different sizes are stamped on the metal plate 2, which can increase the rigidity of the metal plate 2. It should be noted that in some embodiments, there may be no indentations on the metal plate 2; the shape of the indentations on the metal plate 2 is not limited in the embodiments of this application.

[0379] In the embodiments of this application, the projection of the rib 21 in the plane perpendicular to the extension direction of the rib 21 includes trapezoids and Z-shapes, etc. The rib 21 can also be other shapes, which are not limited in this application.

[0380] Optionally, in one embodiment of this application, such as Figures 122-124 and Figures 127-128 As shown, the floor slab also includes at least two supporting structures 3; the at least two supporting structures 3 are fixed to the ends of the truss 1 along the second direction.

[0381] The supporting structure 3 includes a first rib 31, a second rib 32, and a connecting plate 33. The first rib 31 is laid on the third lower chord rib 16 along the first direction, and both ends of the first rib 31 are fixedly connected to two web ribs 12 respectively. The connecting plate 33 is fixed to the lower surface of the main body 111 of the steel upper chord 11 of the truss 1. The first rib 31 intersects with the second rib 32. One end of the second rib 32 is fixedly connected to the plate structure 2, and the other end of the second rib 32 is fixedly connected to the connecting plate 33.

[0382] In this embodiment of the application, a support structure 3 is provided at each end of the truss 1. The support structure 3 can support the steel upper chord 11 at the end of the truss 1, improve the load-bearing capacity of the steel upper chord 11, and thus improve the shear resistance of the steel upper chord 11.

[0383] In some embodiments, such as Figures 125-126 As shown, the truss 1 includes a second lower chord 15, and the angle between the lower inverted bend 1213 of the truss 1 and the main body 1212 includes an obtuse angle; at least two support structures 3 are fixed to the ends of the truss 1 along a second direction. The support structure 3 includes a first rib 31, a second rib 32, and a connecting plate 33; the first rib 31 is laid on the second lower chord 15 along a first direction, and both ends of the first rib 31 are fixedly connected to two web ribs 12 respectively; the connecting plate 33 is fixed to the lower surface of the main body 111 of the steel upper chord 11 of the truss 1; the first rib 31 intersects with the second rib 32; one end of the second rib 32 is fixedly connected to the plate structure 2, and the other end of the second rib 32 is fixedly connected to the connecting plate 33.

[0384] It should be noted that in the truss 1 provided in the first aspect above, when the lower surface of the end of the main body 111 of the steel upper chord 111 of the truss 1 along the second direction is a plane, and a second lower chord rib 15 and / or a third lower chord rib 16 are fixed on one side of the main body 1212, the support structure 3 provided in this application embodiment can be set at the end of these trusses 1 to support the steel upper chord 11 at the end.

[0385] Optionally, in one embodiment of this application, such as Figures 129-131 As shown, the floor slab also includes at least two supporting structures 3; the at least two supporting structures 3 are fixed to the ends of the truss 1 along the second direction.

[0386] The support structure 3 is trapezoidal in a plane perpendicular to the extension direction of the truss 1. The top of the support structure 3 is fixed to the lower surface of the main body 111 of the steel upper chord 11 of the truss 1, and the bottom of the support structure 3 is fixed to the plate structure 2. The two sides of the support structure 3 are respectively fixedly connected to the third lower chord 16 on the two web ribs 12.

[0387] In this embodiment, the support structure 3 is formed by bending steel bars or steel strips. A support structure 3 is provided at each end of the truss 1. The support structure 3 can support the steel upper chord 11 at the end of the truss 1, improve the load-bearing capacity of the steel upper chord 11, and thus improve the shear resistance of the steel upper chord 11.

[0388] In some embodiments, such as Figure 132 As shown, the truss 1 does not include the third lower chord 16, and at least two support structures 3 are fixed to the ends of the truss 1 along the second direction. The support structure 3 is trapezoidal in a plane perpendicular to the extension direction of the truss 1. The top of the support structure 3 is fixed to the lower surface of the main body 111 of the steel upper chord 11 of the truss 1, the bottom of the support structure 3 is fixed to the plate structure 2, and the two sides of the support structure 3 are respectively fixed to one side of the adjacent extension 112.

[0389] It should be noted that in the truss 1 provided in the first aspect above, when the lower surface of the end of the main body 111 of the steel upper chord 111 of the truss 1 along the second direction is a plane, and the inner side of the main body 1212 is fixed with a third lower chord rib 16, the top of the support structure 3 is fixed to the lower surface of the main body 111 of the steel upper chord 11 of the truss 1, the bottom of the support structure 3 is fixed to the plate structure 2, and the two sides of the support structure 3 are respectively fixedly connected to the third lower chord rib 16 on the two web ribs 12; the support structure 3 provided in this application embodiment can be set at the end of these trusses 1 to support the steel upper chord 11 at the end.

[0390] In the truss 1 provided in the first aspect above, when the lower surface of the end of the main body 111 of the steel upper chord 111 of the truss 1 along the second direction is a plane, the main body 111 and at least a portion of the extension 112 are not coplanar, and the inner side of the main body 1212 is not fixed with a third lower chord rib 16, the top of the support structure 3 is fixed to the lower surface of the main body 111 of the steel upper chord 11 of the truss 1, and the bottom of the support structure 3 is fixed to the plate structure 2; the two sides of the support structure 3 are respectively fixed to the inner side of the adjacent extension 112; the support structure 3 provided in this application embodiment can be provided at the ends of these trusses 1 for supporting the steel upper chord 11 at the ends.

[0391] Optionally, in optional embodiments of this application, such as Figures 133-134 As shown, the floor slab also includes at least two supporting structures 3; the at least two supporting structures 3 are fixed to the ends of the truss 1 along the second direction.

[0392] The supporting structure 3 includes a third rib 34 and at least two fourth ribs 35; the third rib 34 is laid on the third lower chord rib 16 along the first direction, and the two ends of the third rib 34 are respectively fixedly connected to the two web ribs 12; the two fourth ribs 35 intersect with the third rib 34 and are arranged at both ends of the third rib 34 along the first direction; one end of the fourth rib 35 is fixed to the lower reverse bend of the web rib 12, and the other end is fixed to one side of the extension 112 of the steel upper chord 11 of the truss 1, or one end of the fourth rib 35 is fixed to the plate structure 2, and the other end of the fourth rib 35 is fixed to the lower surface of the main body 111 of the steel upper chord 11.

[0393] In some embodiments, such as Figures 133-134 and Figures 136-137 As shown, a support structure 3 is provided at each end of the truss 1. A third rib 34 extends along the first direction and rests on the third lower chord rib 16, and is fixedly connected to both web ribs 12. Two fourth ribs 35 intersect with the third rib 34 and are fixedly connected. One end of each fourth rib 35 is fixed at a different position on the plate structure 2, and the other end is fixed on the lower surface of the main body 111 near the two extensions 112. The support structure 3 composed of the third rib 34 and the fourth rib 35 can support the steel upper chord 11 at the end of the truss 1, improve the load-bearing capacity of the steel upper chord 11, and thus improve the shear resistance of the steel upper chord 11.

[0394] In some embodiments, such as Figure 135 As shown, a support structure 3 is provided at each end of the truss 1. A third rib 34 extends along the first direction and rests on the second lower chord rib 15, and is fixedly connected to both web ribs 12. Two fourth ribs 35 intersect with and are fixedly connected to the third rib 34. One end of each fourth rib 35 is fixed at a different position on the plate structure 2, and the other end is fixed on the lower surface of the main body 111 near the two extensions 112. The support structure 3 composed of the third rib 34 and the fourth rib 35 can support the steel upper chord 11 at the end of the truss 1, improve the load-bearing capacity of the steel upper chord 11, and thus improve the shear resistance of the steel upper chord 11.

[0395] In some embodiments, such as Figures 136-137As shown, a support structure 3 is provided at each end of the truss 1. A third rib 34 extends along the first direction and rests on the third lower chord rib 16. The third rib 34 is fixedly connected to the main branches 1212 of the two web ribs 12. Two fourth ribs 35 intersect with and are fixedly connected to the third rib 34. One end of each of the two fourth ribs 35 is fixed to the lower inverted bend 1213 at the end of the two web ribs 12, and the other end is fixed to one side of each of the two extensions 112. The support structure 3 composed of the third rib 34 and the fourth rib 35 can support the steel upper chord 11 at the end of the truss 1, improve the load-bearing capacity of the steel upper chord 11, and thus improve the shear resistance of the steel upper chord 11.

[0396] In some embodiments, such as Figure 138 As shown, a support structure 3 is provided at each end of the truss 1. A third rib 34 extends along the first direction and rests on the second lower chord rib 15. The third rib 34 is fixedly connected to the main branches 1212 of the two web ribs 12. Two fourth ribs 35 intersect with and are fixedly connected to the third rib 34. One end of each fourth rib 35 is fixed to the lower inverted bend 1213 at the end of the two web ribs 12, and the other end is fixed to one side of each of the two extensions 112. The support structure 3 composed of the third rib 34 and the fourth rib 35 can support the steel upper chord 11 at the end of the truss 1, improve the load-bearing capacity of the steel upper chord 11, and thus improve the shear resistance of the steel upper chord 11.

[0397] It should be noted that in the truss 1 of the first aspect mentioned above, the main body 111 includes at least two grooves 1111, the main body 111 and the extension 112 are not coplanar, and one side of the main body 1212 is fixed to the second lower chord 15 or the third lower chord 16. The support structure 3 provided in the embodiments of this application can be set at the ends of these trusses 1 to support the steel upper chord 11 at the ends.

[0398] Optionally, in one embodiment of this application, such as Figure 116-120 and Figures 139-140 As shown, plate structure 2 includes a metal plate.

[0399] The truss 1 includes a first lower chord 14 and a third lower chord 16 .

[0400] The upper surface of the plate structure 2 is provided with a protruding rib 21. The bottom end of the lower reverse bend 1213 of the web reinforcement 12 of the truss 1 is fixed to the protruding rib 21 by the first lower chord reinforcement 14. The first lower chord reinforcement 14 is parallel to the protruding rib 21.

[0401] In this embodiment, the lower inverted bend 1213 of the truss 1 and the main trunk 1212 are located on the same plane. A metal plate is directly used as the bottom plate structure 2 to connect with the truss 1, making full use of the tensile strength of the galvanized iron sheet. This is equivalent to the lower chord of the truss 1 (including the lower inverted bend 1213, the first lower chord rib, and the third lower chord rib 16) and the bottom plate structure 2 jointly bearing the tensile force. Moreover, the plate structure 2 becomes thicker at the protruding rib 21, which can improve the local width-to-thickness ratio of the plate structure 2, thereby improving the local stability of the plate structure 2, helping to reduce the deflection of the structure and improve the strength of the plate structure 2.

[0402] In addition, the extension direction of the protruding rib 21 is consistent with the extension direction of the truss 1, that is, the extension direction of the protruding rib 21 is the same as the extension direction of the main body 111 of the truss 1, both extending along the second direction, which can increase the constraint and support in the first direction, thereby improving the overall stiffness of the floor slab and the load-bearing capacity of the structure.

[0403] In this embodiment, the third lower chord 16 is disposed on the inner side of the main frame 1212. When the first lower chord 14 at the bottom of the truss 1 is welded to the protruding rib 21 on the plate structure 2, the welding head of the welding equipment can be directly lowered from above to the connection between the first lower chord 14 and the protruding rib 21 for welding. The operation is simple and the welding efficiency is high. Compared with the prior art, which sets the lower chord 16 on the outer side of the main frame 1212, this embodiment sets the third lower chord 16 to be fixed on the inner side of the main frame 1212, which will not interfere with manual soldering.

[0404] Optionally, in optional embodiments of this application, such as Figure 116-120 and Figures 141-158 As shown, plate structure 2 includes a metal plate.

[0405] The truss 1 includes a first lower chord 14 and a third lower chord 16 .

[0406] The bottom end of the lower reverse bend 1213 of the web reinforcement 12 of truss 1 is fixed to the plate structure 2 by the first lower chord reinforcement 14.

[0407] In this embodiment, the lower inverted bend 1213 of the truss 1 and the main trunk 1212 are located on the same plane. A metal plate is directly used as the bottom plate structure 2 to connect with the truss 1, making full use of the tensile strength of the metal plate. This is equivalent to the lower chord of the truss 1 (including the lower inverted bend 1213, the first lower chord rib 14 and the third lower chord rib 16) and the bottom plate structure 2 jointly bearing the tensile force, thereby improving the load-bearing capacity of the floor slab.

[0408] It should be noted that in this application, the first lower chord 14 includes steel bars or strip steel, and compared with the first lower chord 14 made of steel bars, the first lower chord 14 made of strip steel has the function of a rib in addition to the function of the first lower chord 14 made of steel bars.

[0409] It should be noted that, in the embodiments of this application, the truss 1 includes a variety of structures, the specific structures of which have been described in the first aspect and will not be repeated here.

[0410] Optionally, in one embodiment of this application, such as Figure 159 As shown, the slab structure 2 includes a concrete base slab 24; the concrete base slab 24 is cast from concrete or other cement-based materials.

[0411] Truss 1 includes a first lower chord 14, and also includes a second lower chord 15 or a third lower chord 16.

[0412] The first lower chord reinforcement 14 is inserted into the concrete base slab 24.

[0413] In the embodiments of this application, the vertical distance between the second lower chord 15 or the third lower chord 16 and the concrete base slab includes 5-25mm, including the upper and lower limits.

[0414] Optionally, in one embodiment of this application, such as Figures 160-161 As shown, the slab structure 2 includes: a concrete base slab 24, a first reinforcing bar 22, and a second reinforcing bar 23.

[0415] Concrete base slab 24, which is made of concrete or other cement-based materials.

[0416] The first reinforcing bar 22 is set in the concrete base slab 24 along the first direction and is laid on the lower reverse bend 1213 at the corresponding position of part of the web reinforcement 12; at least part of the first reinforcing bar 22 is connected.

[0417] The second reinforcing bar 23 is set in the concrete base slab 24 along the second direction, located above the first reinforcing bar 22.

[0418] The bottom end of the web reinforcement 12 of the truss 1 is inserted into the concrete base slab 24 and fixedly connected to the first reinforcement 22 and part of the second reinforcement 23.

[0419] In this embodiment, the second reinforcing bar 23 extends in the same direction as the truss 1, and can serve as the lower chord reinforcement of the truss 1, thereby improving the tensile strength of the lower chord of the truss 1. Furthermore, the second reinforcing bar 23 can be prestressed.

[0420] In this embodiment, all the first reinforcing bars 22 may be arranged only along the first direction, and adjacent first reinforcing bars 22 may be spaced apart by a certain distance or connected to each other, or one end of adjacent first reinforcing bars 22 may be connected, so that all the first reinforcing bars 22 are connected as one.

[0421] It should be noted that, in addition to the first reinforcing bar 22 and the second reinforcing bar 23, the concrete base slab 24 may also be provided with reinforcing bars, which is common knowledge and will not be described in this application.

[0422] In some embodiments, such as Figures 162-163 As shown, the lower inverted bend 1213 of truss 1 is embedded in the plate structure 2 to form a composite plate, and the plate structure 2 is cast from concrete or other cement-based materials. Other trusses 1 described in the first aspect can also have their lower inverted bend 1213 embedded in the plate structure 2 to form a composite plate. Figures 162-163 The composite plate shown.

[0423] In some embodiments, such as Figures 164-165 As shown, the lower inverted bend 1213 of truss 1 is embedded in the plate structure 2 to form a non-metallic floor deck. Other trusses 1 described in the first aspect can also have their lower inverted bends 1213 embedded in the plate structure 2 to form, as shown... Figures 164-165 The non-metallic floor deck shown.

[0424] Optionally, in an optional embodiment of this application, at least one transverse link is provided between adjacent trusses 1, and the two ends of the transverse link are respectively connected to the steel upper chord 11 of the two adjacent trusses 1.

[0425] In this embodiment of the application, two trusses 1 are fixed on one of the slab structures 2 of the floor slab. A transverse connecting rod is set between the steel upper chords 11 of the trusses 1. The transverse connecting rod connects the two trusses 1 into a whole, thereby improving the rigidity of the floor slab. The number of transverse connecting rods is not less than 1.

[0426] Optionally, in an optional embodiment of this application, the plate structure 2 includes a metal plate; the lower surface of the metal plate is provided with a non-metal plate.

[0427] In this embodiment of the application, the plate structure 2 includes a metal plate, and a non-metallic plate is provided on the underside of the metal plate, which can be used for subsequent decoration and renovation.

[0428] By applying the embodiments of this application, at least the following beneficial effects can be achieved:

[0429] 1. In this embodiment, the two extensions 112 of the steel upper chord 11 are disposed on both sides of the strip-shaped main body 111 of the steel upper chord 11 along the first direction. In a plane perpendicular to the extension direction of the main body 111, there is an angle between the main body 111 and the extensions 112. The web rib 12 has a plurality of periodic structures 121 distributed sequentially along the second direction. The periodic structure 121 includes an upper reverse bend 1211, a main body 1212 and a lower reverse bend 1213 distributed sequentially. The upper reverse bend 1211 is fixed to at least one of the main body 111 and the extensions 112, so that the distance between the lower reverse bends 1213 at the bottom of the two web ribs 12 along the first direction is large, so that the force transmission area between the truss 1 and the bottom plate structure 2 is large, so that the force is more reasonable, thereby improving the overall stability of the truss 1.

[0430] Furthermore, in this embodiment, the contact point between the upper steel chord 11 and the upper reverse bend 1211 is a plane, which facilitates welding. In addition, the upper steel chord 11 and the upper reverse bend 1211 have a line-to-surface contact, resulting in a large contact area and thus greater strength in the welded area, thereby improving the performance of the connection area.

[0431] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in related technologies that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0432] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0433] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0434] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0435] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0436] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.

Claims

1. A truss, characterized in that, include: A steel upper chord includes a main body and two extensions. The two extensions are disposed on both sides of the main body along a first direction. The main body is strip-shaped, and the first direction is perpendicular to a second direction in which the main body extends. In a plane perpendicular to the extension direction of the main body, there is an angle between the main body and the extensions. Two web ribs, the overall length of which extends along the second direction and is at least partially located below the upper chord of the steel; along the second direction, the web ribs include a plurality of periodic structures distributed in sequence, the periodic structures including an upper reverse bend portion, a main body portion and a lower reverse bend portion distributed in sequence; the upper reverse bend portion is fixed to at least one of the main body portion and the extension portion.

2. The truss according to claim 1, characterized in that, In a plane perpendicular to the extending direction of the main body, there is an angle between the upper reverse bend and the main body; The upper reverse bend is fixed to the upper or lower surface of the main body, or at least a portion of the top end of the upper reverse bend is fixedly connected to the extension, and the upper reverse bend is parallel to at least a portion of the main body; The two abdominal tendons may be separated or connected to each other in either of their upper inverted bends.

3. The truss according to claim 2, characterized in that, The upper inverted bend is coplanar with the main body, and the upper inverted bend is fixedly connected to at least a portion of the extension.

4. The truss according to claim 2 or 3, characterized in that, The main body includes at least two grooves, and the at least two grooves are arranged along the second direction.

5. The truss according to claim 2, characterized in that, It also includes at least one of the following: The extension is strip-shaped; The angle between the main body and the extension is an obtuse angle.

6. The truss according to claim 2, characterized in that, The main body includes at least two grooves, which are arranged along the second direction; the extension is strip-shaped, and the planar region between any two adjacent grooves of the main body is coplanar with the extension; the upper reverse bend is fixed to the upper or lower surface of the extension.

7. The truss according to claim 5, characterized in that, The end of the extension away from the main body is bent to form an edge.

8. The truss according to claim 5, characterized in that, The end of the extension away from the main body is bent to form an edge portion, which is parallel to the main body.

9. The truss according to claim 7 or 8, characterized in that, The main body and the extension form a downward-opening first groove, the upper reverse-bending part is fixed to the upper or lower surface of the main body, and the extension is fixedly connected to the main body.

10. The truss according to claim 2, characterized in that, The main body and the extension are located on the same plane. The end of the extension away from the main body is bent to form an edge. The upper reverse bend is fixed to the lower surface of at least one of the main body and the extension, or the upper reverse bend is fixed to the lower surface of the edge. Alternatively, the main body and the extension are located on the same plane, the upper reverse bend is fixed to the lower surface of at least one of the main body and the extension, and the end of the extension away from the main body is curled to form an edge.

11. The truss according to claim 2, characterized in that, The upper reverse bending portion is fixed to the lower surface of the main body portion, and the main body portion and the extension portion enclose and form a second groove with an upward opening; The truss also includes concrete filling the second trench.

12. The truss according to any one of claims 1-11, characterized in that, It also includes at least one of the following: The first lower chord is fixed to the bottom of the lower reverse bend; the first lower chord extends along the second direction. The second lower chord is fixed to the outside of the main body and connected to multiple bottoms of the main body at a designed distance; the second lower chord extends along the second direction; The third lower chord is fixed to the inner side of the main body and connected to multiple bottoms of the main body at a designed distance; the third lower chord extends along the second direction; At least one reinforcing rib is located on the upper or lower surface of the main body.

13. The truss according to claim 12, characterized in that, It also includes at least one of the following: At least one of the upper reverse bends of any of the abdominal ribs is at least one of a triangle, a trapezoid, and an inverted trapezoid in a plane parallel to the extension direction of the main body. At least one of the downward curved portions of any of the said abdominal ribs is at least one of a triangle, a trapezoid, and an inverted trapezoid in a plane parallel to the extension direction of the main body.

14. A floor slab, characterized in that, include: The truss as described in any of claims 1-13 above, and the plate structure disposed at the bottom of the truss.

15. The floor slab according to claim 14, characterized in that, The plate structure includes a metal plate; The truss includes a third bottom chord; The upper surface of the plate structure is provided with a protruding rib, and the bottom end of the lower reverse bend of the web reinforcement of the truss is fixed to the protruding rib.

16. The floor slab according to claim 15, characterized in that, It also includes at least two support structures; the at least two support structures are fixed to the ends of the truss along the second direction; The supporting structure includes a first rib, a second rib, and a connecting plate; the first rib is laid on the third lower chord along a first direction, and both ends of the first rib are fixedly connected to the two web ribs respectively; the connecting plate is fixed to the lower surface of the main body of the steel upper chord of the truss; the first rib intersects with the second rib; one end of the second rib is fixedly connected to the plate structure; and the other end of the second rib is fixedly connected to the connecting plate.

17. The floor slab according to claim 15, characterized in that, It also includes at least two support structures; the at least two support structures are fixed to the ends of the truss along the second direction; The support structure is trapezoidal in a plane perpendicular to the extension direction of the truss. The top of the support structure is fixed to the lower surface of the main body of the steel upper chord of the truss, the bottom of the support structure is fixed to the plate structure, and the two sides of the support structure are respectively fixedly connected to the third lower chord of the two web reinforcements.

18. The floor slab according to claim 15, characterized in that, It also includes at least two support structures; the at least two support structures are fixed to the ends of the truss along the second direction; The supporting structure includes a third rib and at least two fourth ribs; the third rib is laid on the third lower chord along a first direction, and both ends of the third rib are fixedly connected to the two web ribs respectively; the two fourth ribs intersect with the third rib and are arranged at both ends of the third rib along the first direction; one end of the fourth rib is fixed to the lower reverse bend of the web rib, and the other end is fixed to one side of the extension of the steel upper chord of the truss, or one end of the fourth rib is fixed to the plate structure, and the other end of the fourth rib is fixed to the lower surface of the main body of the steel upper chord.

19. The floor slab according to claim 14, characterized in that, The plate structure includes a metal plate; The truss includes a first bottom chord and a third bottom chord; The upper surface of the plate structure is provided with a protruding rib, and the bottom end of the lower reverse bend of the truss web reinforcement is fixed to the protruding rib by a first lower chord reinforcement, which is parallel to the protruding rib.

20. The floor slab according to claim 14, characterized in that, The plate structure includes a metal plate; The truss includes a first bottom chord and a third bottom chord; The bottom end of the lower reverse bend of the web reinforcement of the truss is fixed to the plate structure by the first lower chord reinforcement.

21. The floor slab according to claim 14, characterized in that, The slab structure includes a concrete base slab; the concrete base slab is cast from concrete or other cement-based materials; The truss includes a first bottom chord and a second bottom chord or a third bottom chord; The first lower chord reinforcement is inserted into the concrete base slab.

22. The floor slab according to claim 14, characterized in that, The plate structure includes: A concrete base slab, wherein the concrete base slab is cast from concrete or other cement-based materials; The first reinforcing bar is disposed in the concrete base slab along the first direction and is laid on the lower reverse bend of a portion of the web reinforcement; at least a portion of the first reinforcing bars are connected to each other; The second reinforcing bar is disposed within the concrete base slab along the second direction, located above the first reinforcing bar; The bottom end of the web reinforcement of the truss is inserted into the concrete base slab and is fixedly connected to the first reinforcing bar and part of the second reinforcing bar.

23. The floor slab according to claim 14, characterized in that, At least one transverse link is provided between adjacent trusses, and the two ends of the transverse link are respectively connected to the steel top chord of the two adjacent trusses.

24. The floor slab according to claim 14, characterized in that, The plate structure includes a metal plate; a non-metal plate is provided on the lower surface of the metal plate.

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