Flaky truss prefabricated laminated slab

Abstract

The utility model discloses a sheet truss prefabricated laminated slab which comprises laminated slab bottom ribs and plate-shaped concrete wrapped outside the laminated slab bottom ribs, and further comprises a plurality of sheet trusses which are parallel to one another and are uniformly arranged and bound on the laminated slab bottom ribs, the sheet trusses are perpendicular to a plane formed by the laminated slab bottom ribs, and the plate-shaped concrete is arranged on the laminated slab bottom ribs. The bottom of the sheet truss is covered with the plate-shaped concrete, and the sheet truss comprises a lower chord rib, an upper chord rib and web member steel bars fixedly arranged between the lower chord rib and the upper chord rib. The whole truss is in a sheet shape, compared with a traditional truss of a space triangular structure, use of a lower chord rib and web member steel bars on one side is reduced, the use amount of the steel bars is reduced, meanwhile, the welding operation amount between the web member steel bars on one side and the lower chord rib and the welding operation amount between the web member steel bars on one side and the upper chord rib are reduced, and therefore the weight of the truss part and the manufacturing cost are reduced; and the overall structure still maintains the basic use performance of the truss and the prefabricated laminated slab.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated composite panels, in particular to a sheet-like truss prefabricated composite panel. Background Art

[0002] With the development and promotion of prefabricated buildings, the application of prefabricated composite slabs is becoming more and more extensive. The steel trusses on the prefabricated composite slabs mainly play the role of connecting the prefabricated base plate with the cast-in-place concrete. At the same time, it also enhances the bearing capacity and integrity of the entire floor slab, and improves the safety and stability of the structure.

[0003] Traditional prefabricated composite slab steel trusses are triangular in structure, primarily consisting of an upper chord, two lower chords, and web members positioned between the upper and lower chords. The web members and the upper and lower chords require multiple welding points to connect them, resulting in a significant welding workload. Furthermore, the complex and heavy structure of traditional composite slab steel trusses results in high steel consumption during mass production and manufacturing, hindering cost control.

[0004] To this end, the present application specifically proposes a sheet-like truss prefabricated composite plate to solve the above technical problems. Utility Model Content

[0005] The main purpose of the present invention is to solve the above-mentioned deficiencies and provide a sheet-like truss prefabricated composite plate, which reduces the weight and manufacturing cost of the truss while ensuring that the basic performance of the truss and the prefabricated composite plate is not affected.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A sheet truss prefabricated composite slab includes a composite slab bottom reinforcement and plate-shaped concrete wrapped around the outside of the composite slab bottom reinforcement. It also includes: a plurality of sheet trusses, which are parallel to each other and evenly arranged and tied on the composite slab bottom reinforcement. The sheet trusses are perpendicular to the plane formed by the composite slab bottom reinforcement, and the bottoms are covered by the plate-shaped concrete. The sheet trusses include a lower chord, an upper chord and web reinforcement fixedly arranged between the lower chord and the upper chord.

[0008] Furthermore, the lower chord reinforcement is tied and fixed to the bottom reinforcement of the composite slab, is parallel to the plane formed by the bottom reinforcement of the composite slab, and is completely embedded in the plate-shaped concrete, and the upper chord reinforcement is parallel to the lower chord reinforcement.

[0009] Furthermore, triangular ring steel bars are fixedly provided at both ends of the sheet truss. The triangular ring steel bars are isosceles triangles perpendicular to the plane formed by the bottom bars of the composite plate. The bottom side is tied and fixed to the bottom bars of the composite plate. The end of the upper chord bar is welded to the top inner corner of the triangular ring steel bar, and the end of the lower chord bar is welded to the midpoint of the bottom side of the triangular ring steel bar.

[0010] Furthermore, the web reinforcement is in a wave shape with equal intervals, the wave crests are welded to the upper chord reinforcement, and the wave troughs are welded to the lower chord reinforcement.

[0011] Furthermore, the web reinforcement is composed of a plurality of equally spaced short-connected reinforcement groups, each of which is composed of two short reinforcements welded in an "eight" shape between the lower chord and the upper chord.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. The truss body of the utility model is composed of a lower chord, an upper chord and a web reinforcement fixedly arranged therebetween. The truss body is sheet-shaped as a whole. Compared with the traditional spatial triangular structure truss, the use of a lower chord and one side of the web reinforcement is reduced, the amount of reinforcement used is reduced, and the amount of welding work between the web reinforcement on one side and the lower chord and upper chord is reduced, thereby reducing the weight and manufacturing cost of the truss part. The overall structure still maintains the basic performance of the truss and prefabricated composite plate.

[0014] 2. The utility model welds triangular ring steel bars at both ends of the sheet truss. When the lower chord bars in the sheet truss are tied to the bottom bars of the composite plate, the triangular ring steel bars at both ends of the sheet truss stand on the upper surface of the bottom bars of the composite plate, thereby providing stable support for the sheet truss and preventing it from tipping over during the tying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0017] Figure 2 This is a perspective diagram of a concrete slab according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of a sheet truss structure according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of a sheet truss structure according to an embodiment of the present invention.

[0020] In the figure: 1. Lower chord reinforcement; 2. Upper chord reinforcement; 3. Web member reinforcement; 4. Triangular ring reinforcement; 5. Bracket; 6. Slab concrete; 7. Sheet truss; 8. Composite slab bottom reinforcement. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] like Figure 1-4 As shown, the present invention provides a sheet-like truss prefabricated composite plate, including composite plate bottom reinforcement 8 and plate-shaped concrete 6 wrapped around the composite plate bottom reinforcement 8, and further comprising:

[0023] Multiple sheet trusses 7 are parallel and evenly arranged and tied to the composite slab bottom reinforcement 8. The sheet trusses 7 are perpendicular to the plane formed by the composite slab bottom reinforcement 8 and their bottoms are covered by slab concrete 6. The sheet trusses 7 include a bottom chord 1, a top chord 2, and web reinforcement 3 fixed between the bottom chord 1 and the top chord 2. The bottom chord 1 is tied and fixed to the composite slab bottom reinforcement 8, parallel to the plane formed by the composite slab bottom reinforcement 8, and completely embedded in the slab concrete 6. The top chord 2 is parallel to the bottom chord 1.

[0024] The truss body of the prefabricated composite panel is composed of a lower chord 1, an upper chord 2 and a web reinforcement 3 fixedly arranged therebetween. The truss body is sheet-shaped as a whole. Compared with the traditional spatial triangular structure truss, it reduces the use of a lower chord 1 and a web reinforcement 3 on one side, reduces the amount of steel bars used, and reduces the amount of welding work between the web reinforcement 3 on one side and the lower chord 1 and the upper chord 2, thereby reducing the weight and manufacturing cost of the truss part. The overall structure still maintains the basic performance of the truss and the prefabricated composite panel.

[0025] In one embodiment, triangular ring steel bars 4 are fixedly provided at both ends of the sheet truss 7. The triangular ring steel bars 4 are isosceles triangles perpendicular to the plane formed by the bottom bars 8 of the composite plate. The bottom edge is tied and fixed to the bottom bars 8 of the composite plate. The end of the upper chord bar 2 is welded to the top inner corner of the triangular ring steel bar 4, and the end of the lower chord bar 1 is welded to the midpoint of the bottom edge of the triangular ring steel bar 4.

[0026] With this design, when the lower chord 1 of the sheet truss 7 is tied to the bottom reinforcement 8 of the composite plate, the triangular ring steel bars 4 at both ends of the sheet truss 7 stand on the upper surface of the bottom reinforcement 8 of the composite plate, thereby providing stable support for the sheet truss 7 and preventing it from tipping over during the subsequent binding process.

[0027] In one embodiment, the web reinforcement 3 is in a wave shape with equal intervals, with the wave crests welded to the upper chord 2 and the wave troughs welded to the lower chord 1 .

[0028] With this design, the wavy web reinforcement 3 connects the lower chord 1 and the upper chord 2 to form a stable whole, thereby ensuring the overall structural strength.

[0029] In one embodiment, the web reinforcement 3 is composed of a plurality of equally spaced short-connected reinforcement groups, each of which is composed of two short reinforcements welded in an "eight" shape between the lower chord 1 and the upper chord 2 .

[0030] With this design, the production cost of the "eight"-shaped short-connected steel bar group is lower than that of the equally spaced wavy web steel bars 3. It is only necessary to cut the long steel bars into the required length. However, in the subsequent welding operation, the inclination and spacing of the short-connected steel bar group need to be positioned, which consumes a certain amount of work time. In the manufacturing process of the prefabricated composite plate, the pros and cons can be weighed as a whole to select the specific form of the web steel bar 3.

[0031] The main steps of manufacturing a sheet truss prefabricated composite plate are as follows:

[0032] Step 1: Use bending and forming equipment to bend the steel bars into triangles, and weld the joints to form closed ring steel bars, thereby realizing mass production of triangular ring steel bars 4.

[0033] Step 2: Use truss processing equipment to arrange the web reinforcement 3 at equal intervals and weld them to the top upper chord 2 and the bottom lower chord 1 to form a single-piece truss body.

[0034] Step 3: The triangular ring steel bars 4 are placed at both ends of the single-piece truss and welded to the top upper chord 2 and the bottom lower chord 1 to complete the processing of the sheet truss 7.

[0035] Step 4: Place the sheet truss 7 together with the triangular ring steel bar 4 on the composite plate bottom reinforcement 8 at a certain distance, tie the sheet truss 7, connect it with the composite plate bottom reinforcement 8 to form a whole and incorporate it into the mold.

[0036] Step 5: pour the plate-shaped concrete 6 and vibrate it evenly. After removing the formwork and curing, the sheet-shaped truss prefabricated composite plate is completed and stacked on the bracket 5.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, "multiple" means more than two. Furthermore, the technical solutions of the various embodiments may be combined with each other, but this must be based on the premise that they can be implemented by a person of ordinary skill in the art. If the combination of technical solutions is mutually inconsistent or cannot be implemented, it shall be deemed that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A sheet-like truss prefabricated composite plate, comprising a composite plate bottom reinforcement (8) and a plate-like concrete (6) wrapped around the outside of the composite plate bottom reinforcement (8), characterized in that: Also includes: A plurality of sheet-like trusses (7) are arranged parallel to each other and evenly arranged and tied on the bottom reinforcement (8) of the composite plate. The sheet-like trusses (7) are perpendicular to the plane formed by the bottom reinforcement (8) of the composite plate, and the bottom is covered by the plate-like concrete (6). The sheet-like trusses (7) include a lower chord (1), an upper chord (2), and a web reinforcement (3) fixedly arranged between the lower chord (1) and the upper chord (2).

2. The prefabricated laminated plate of sheet trusses according to claim 1, characterized in that: The lower chord reinforcement (1) is tied and fixed to the composite slab bottom reinforcement (8), is parallel to the plane formed by the composite slab bottom reinforcement (8), and is completely embedded in the plate-shaped concrete (6); the upper chord reinforcement (2) is parallel to the lower chord reinforcement (1).

3. The prefabricated laminated plate of sheet trusses according to claim 2, characterized in that: Triangular ring steel bars (4) are fixedly provided at both ends of the sheet truss (7), and the triangular ring steel bars (4) are isosceles triangles perpendicular to the plane formed by the composite plate bottom bars (8), and the bottom side is tied and fixed to the composite plate bottom bars (8), the end of the upper chord bar (2) is welded to the top inner corner of the triangular ring steel bar (4), and the end of the lower chord bar (1) is welded to the midpoint of the bottom side of the triangular ring steel bar (4).

4. The prefabricated laminated plate of sheet trusses according to claim 2, characterized in that: The web reinforcement bars (3) are in a wave shape with equal intervals, with the wave crests being welded to the upper chord bars (2) and the wave troughs being welded to the lower chord bars (1).

5. The prefabricated laminated plate of sheet trusses according to claim 2, characterized in that: The web reinforcement (3) is composed of a plurality of short-connected reinforcement groups at equal intervals, wherein the short-connected reinforcement group is composed of two short reinforcements, which are welded in an "eight" shape between the lower chord reinforcement (1) and the upper chord reinforcement (2).

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