Bearing mechanism of steel bar truss floor support plate and construction method

Abstract

The invention relates to the technical field of building construction, and discloses a bearing mechanism of steel bar truss floor support plates and a construction method.The bearing mechanism comprises a bearing beam and the steel bar truss floor support plates symmetrically arranged on the two sides of the bearing beam, the bearing beam comprises I-shaped steel, and a plurality of hanging steel bars are evenly fixed to the two ends of the bottom of the I-shaped steel in the longitudinal direction; longitudinal connecting steel bars are fixedly welded between the hanging steel bars on the adjacent sides, and heat preservation plates A are arranged on the two sides of the lower portion of the I-shaped steel. The bottom die is installed on the cross-shaped sliding table through one-time hoisting, the connecting position between the steel bar truss and the I-shaped steel is corrected for multiple times through the cross-shaped sliding table, the bottom die does not need to be hoisted repeatedly, connection between the steel bar truss and the I-shaped steel is more convenient, meanwhile, the heat preservation plate B is arranged between the bottom die and the steel bar truss, and the heat preservation plate B and the bottom die are detachably connected; after the floor support plate is formed, the bottom die can be taken down, and later decoration is not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and specifically to a bearing mechanism and construction method of a steel bar truss floor slab. Background Art

[0002] A steel bar truss floor slab is made by welding longitudinal steel bars (i.e., upper and lower chord bars) of upper and lower layers with small-diameter steel bars (i.e., web bars) formed by bending, forming a small truss with a certain stiffness and capable of bearing loads, then welding the small truss with a profiled steel sheet, and then making it by cast-in-place concrete. The steel bar truss floor slab has the advantages of large overall stiffness and good seismic performance, and due to its short construction period and easy control of construction quality, it has been widely used in many projects at home and abroad in recent years.

[0003] After retrieval, in the patent document with the publication number of CN119616070A, a connection structure and construction method between a steel beam and a steel bar truss floor slab are provided. Among them, the bottom form is pre-fixed on one side of the H-shaped steel by hoisting, and the steel bar truss above the bottom form is placed on the H-shaped steel, and the connection position between the steel bar truss and the H-shaped steel needs to be adjusted accordingly according to the needs of construction. This requires hoisting the bottom form multiple times to correct the steel bar truss. The overall volume of the combination of the bottom form and the steel bar truss is relatively large, and the hoisting process is time-consuming and laborious. And because the bottom form is connected and fixed with the steel bar truss, the bottom form will remain on the steel bar truss after the concrete is poured and shaped. During the later decoration of the house, due to the existence of the bottom form, it may cause inconvenience in decoration. Summary of the Invention

[0004] The purpose of the present invention is to provide a bearing mechanism and construction method of a steel bar truss floor slab to solve the problems of inconvenience in hoisting the steel bar truss multiple times and the influence of the remaining bottom form on house decoration mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A bearing mechanism of a steel bar truss floor slab includes a load-bearing beam and steel bar truss floor slabs symmetrically arranged on both sides of the load-bearing beam. The load-bearing beam includes an I-shaped steel. A plurality of suspension steel bars are longitudinally and uniformly fixed at both ends of the bottom of the I-shaped steel. A longitudinal connecting steel bar is welded and fixed between a plurality of adjacent suspension steel bars on one side. Heat preservation boards A are arranged on both sides of the lower part of the I-shaped steel;

[0007] The steel bar truss floor slab includes a steel bar truss, a heat preservation board B, a bottom form, a cross slide, side forms and connecting pieces. The steel bar truss is fixed on the top of the heat preservation board B. The heat preservation board B is arranged above the bottom form. The bottom form is arranged on the cross slide. The cross slide is arranged on one side of the side form, and the two are connected and fixed by a plurality of the connecting pieces;

[0008] The thickness of the heat preservation board B matches the diameter of the longitudinal connecting steel bars, and the tops are flush after the two are connected. A gap is left between the heat preservation board B and the upper end of one side of the I-shaped steel and set as channel A. A gap is left between the bottom formwork and the heat preservation board B and set as channel C. The channel C is located below the channel A. A gap is left between the side of the heat preservation board A away from the side formwork and the upper part of the I-shaped steel and set as channel B.

[0009] As a further solution of the present invention: the bottoms of the two heat preservation boards A both abut against the steel body surface at the bottom end of the I-shaped steel, and the upper ends of the two heat preservation boards A do not contact the upper end of the I-shaped steel. The heat preservation board A and the I-shaped steel are connected and fixed by a plurality of angle steels. A plurality of transverse connecting steel bars are also arranged between the I-shaped steel and the suspension steel bars on both sides. One end of the transverse connecting steel bar is welded and fixed to the I-shaped steel, and the other end penetrates through the corresponding heat preservation board A on one side and is welded and fixed to the longitudinal connecting steel bar on the corresponding side.

[0010] As a further solution of the present invention: the steel bar truss includes an upper chord steel bar and two lower chord steel bars. The two lower chord steel bars are symmetrically arranged on both sides below the upper chord steel bar. The two lower chord steel bars and the upper chord steel bar are welded and fixed by a continuously bent wavy web steel bar. A plurality of strip-shaped transverse reinforcing ribs are uniformly fixed at the bottom of the heat preservation board B. A plurality of fastening bolts are arranged at the bottom of the bottom formwork. One end of each of the plurality of fastening bolts penetrates through the inner wall of the bottom formwork and is screwed and fixed in the inner wall of the corresponding reinforcing rib.

[0011] As a further solution of the present invention: the connecting piece includes a first sliding table and a second sliding table. The first sliding table is fixed to the bottom of the cross sliding table by bolts, and the second sliding table is fixed to one side of the side formwork by bolts. A plug-in board is slidably connected to the bottom of the first sliding table, and a support board is slidably connected to one side of the second sliding table. The upper end of the support board is rotatably connected to a docking board. A plurality of support rods are arranged between the docking board and the support board. The docking board and the plug-in board are plugged and fixed.

[0012] As a further solution of the present invention: two plug blocks are arranged at one end of the plug-in board. The bottom surfaces of one ends of the two plug blocks are both set as inclined surfaces. Slots are opened at the centers of the inner walls of the two plug blocks. Sockets are opened on one side of the inner wall of the docking board corresponding to the two plug blocks. Docking blocks are arranged in the two sockets. The top surfaces of one ends of the two docking blocks are both set as inclined surfaces. The inclined surface at one end of the docking block corresponds to and cooperates with the inclined surface at one end of the plug block.

[0013] As a further solution of the present invention: on one side of the bottom of the docking plate corresponding to the two docking blocks, sliding columns are respectively connected in a sliding manner. One end of each sliding column is fixedly connected to the docking block, and the other end extends below the docking plate. A dial plate is fixed between the bottom ends of the two sliding columns. Springs are sleeved on the two sliding columns, and the upper and lower ends of each spring are respectively fixed on the docking block and the inner wall of the bottom of the jack. A locking bolt is arranged between the dial plate and the docking plate.

[0014] As a further solution of the present invention: a threaded rod is rotatably connected at the middle position inside the support plate. Guide rods are respectively fixed on both sides of the threaded rod inside the support plate. A guide block is arranged between the two guide rods and the threaded rod. The guide block is slidably connected to the guide rod and is threadedly connected to the threaded rod. The lower end of the threaded rod extends to the lower end of the support plate and is flush with the lower end face of the support plate. A cross-shaped groove is formed at the bottom end of the threaded rod.

[0015] As a further solution of the present invention: one end of the support rod is arranged on one side of the guide block, and the two ends of the support rod are respectively provided with a first joint and a second joint. One end of the support rod is rotatably connected to the guide block through the first joint, and the other end of the support rod is rotatably connected to the bottom of the docking plate through the second joint.

[0016] The present invention also discloses a construction method for the bearing mechanism of the above-mentioned steel bar truss floor slab, including the following steps:

[0017] Step 1: Assemble the load-bearing beam, assemble the I-beam in the load-bearing beam with the insulation board A, and weld the suspension steel bars, transverse connecting steel bars and longitudinal connecting steel bars at both ends of the I-beam;

[0018] Step 2: Formwork around the load-bearing beam to fix the side formwork on one side of the load-bearing beam;

[0019] Step 3: Fix the cross slide table on one side of the side formwork through the connecting piece;

[0020] Step 4: Assemble the steel bar truss, insulation board B and bottom formwork, and hoist the assembled whole onto the cross slide table;

[0021] Step 5: First, move the bottom formwork back and forth through the cross slide table to adjust the connection position between the steel bar truss and the I-beam, and then move the bottom formwork left and right through the cross slide table to insert one end of the steel bar truss into the I-beam, so that the upper chord steel bar and the lower chord steel bar in the steel bar truss respectively abut against the I-beam and the longitudinal connecting steel bar;

[0022] Step 6: Formwork on the upper side of the steel bar truss and leave a notch, and pour concrete from the notch;

[0023] Step 7: After the concrete reaches the form removal condition, the cross slide table, the side formwork, and the bottom formwork are removed in sequence.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] In the present invention, the bottom formwork is installed on the cross slide table by one-time hoisting, and the connection position between the steel bar truss and the I-beam is corrected multiple times through the cross slide table, without repeatedly hoisting the bottom formwork, making the connection between the steel bar truss and the I-beam more convenient. At the same time, a heat preservation board B is arranged between the bottom formwork and the steel bar truss, and the heat preservation board B is detachably connected to the bottom formwork. After the floor slab is formed, the bottom formwork can be removed without affecting the later decoration. Further, a connecting piece is arranged between the bottom formwork and the side formwork, and the bottom formwork is supported through the connecting piece, forming a relatively stable connection between the bottom formwork and the side formwork, so that the side formwork will not be separated from the bottom formwork when bearing the mud pressure, and the grouting effect is better. Furthermore, heat preservation board structures are arranged on both sides of the I-beam and the steel bar truss, and the floor slab itself has good heat preservation and heat insulation performance, with better use effect and more energy-saving and environmental protection. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0027] Figure 1 It is the first perspective view of the present invention.

[0028] Figure 2 It is the second perspective view of the present invention.

[0029] Figure 3 It is the front view of the present invention after pouring concrete.

[0030] Figure 4 It is the structural schematic diagram of the bearing beam in the present invention.

[0031] Figure 5 It is the structural schematic diagram of the steel bar truss floor slab in the present invention.

[0032] Figure 6 It is the first perspective view of the separated structure of the steel bar truss floor slab in the present invention.

[0033] Figure 7 It is the second perspective view of the separated structure of the steel bar truss floor slab in the present invention.

[0034] Figure 8 It is the structural schematic diagram of the connecting piece in the present invention.

[0035] Figure 9 It is the first perspective view of the insertion plate and the docking plate in the connector.

[0036] Figure 10 It is the second perspective view of the insertion plate and the docking plate in the connector.

[0037] Figure 11 It is Figure 10 the enlarged view of part A in

[0038] Figure 12 It is the structural schematic diagram of the support rod in the connector.

[0039] Annotation of reference numerals in the drawings: 1 - load-bearing beam, 11 - I-beam, 12 - suspended steel bar, 13 - longitudinal connecting steel bar, 14 - insulation board A, 15 - angle steel, 16 - transverse connecting steel bar, 2 - steel bar truss floor formwork, 21 - steel bar truss, 22 - insulation board B, 23 - bottom formwork, 24 - cross slide, 25 - side formwork, 26 - side formwork support foot, 27 - connector, 271 - first slide, 272 - second slide, 273 - insertion plate, 274 - docking plate, 275 - support plate, 276 - support rod, 277 - insertion block, 278 - slot, 279 - jack, 2710 - docking block, 2711 - slide column, 2712 - spring, 2713 - dial plate, 2714 - locking bolt, 2715 - threaded rod, 2716 - guide rod, 2717 - guide block, 2718 - first joint, 2719 - second joint, 28 - reinforcing rib, 29 - fastening bolt, 3 - channel A, 4 - channel B, 5 - channel C. Detailed implementation manners

[0040] The following embodiments will describe the present invention in detail in conjunction with the drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shapes, thicknesses or heights of the components can be enlarged or reduced. The various embodiments listed in the present invention are only used to illustrate the present invention and are not used to limit the scope of the present invention. Any obvious modification or change made to the present invention does not depart from the spirit and scope of the present invention.

[0041] Please refer to Figures 1 to 12, in the embodiments of the present invention, a bearing mechanism of a steel bar truss floor slab includes a load-bearing beam 1 and steel bar truss floor slabs 2 symmetrically arranged on both sides of the load-bearing beam 1. After the load-bearing beam 1 and the two steel bar truss floor slabs 2 are butted, concrete is poured to form a complete floor slab structure. The load-bearing beam 1 includes an I-shaped steel 11. At both ends of the bottom of the I-shaped steel 11, a plurality of suspension steel bars 12 are longitudinally and uniformly fixed. A longitudinal connecting steel bar 13 is welded and fixed between the plurality of suspension steel bars 12 on the adjacent side. Heat preservation boards A14 are arranged on both sides of the lower part of the I-shaped steel 11. The bottom ends of the two heat preservation boards A14 are both abutted against the steel surface at the bottom end of the I-shaped steel 11, and the upper ends of the two heat preservation boards A14 are not in contact with the upper end of the I-shaped steel 11, leaving a space between them;

[0042] The heat preservation board A14 and the I-shaped steel 11 are connected and fixed through a plurality of angle steels 15. A plurality of transverse connecting steel bars 16 are also arranged between the I-shaped steel 11 and the suspension steel bars 12 on both sides. One end of the transverse connecting steel bar 16 is welded and fixed to the I-shaped steel 11, and the other end penetrates through the corresponding heat preservation board A14 on one side and is welded and fixed to the longitudinal connecting steel bar 13 on the corresponding side. By setting two groups of transverse and longitudinal connecting steel bars, a closer connection relationship is formed between the suspension steel bars 12 and the I-shaped steel 11, providing a more stable supporting effect on the suspension steel bars 12. When connecting the steel bar truss floor slab 2 subsequently, a more stable support can be provided for the steel bar truss in the floor slab, ensuring that the steel bar truss will not deform or shift during the concrete pouring process.

[0043] Please refer to Figures 5 to 7 , the steel bar truss floor slab 2 includes a steel bar truss 21, a heat preservation board B22, a bottom form 23, a cross slide 24, a side form 25 and a connecting piece 27. The steel bar truss 21 is fixed on the top of the heat preservation board B22. The steel bar truss 21 includes an upper chord steel bar and two lower chord steel bars. The two lower chord steel bars are symmetrically arranged on both sides below the upper chord steel bar. A continuously bent wavy web bar is welded and fixed between each of the two lower chord steel bars and the upper chord steel bar. A plurality of strip-shaped transverse reinforcing bars 28 are uniformly fixed at the bottom of the heat preservation board B22;

[0044] The heat preservation board B22 is arranged above the bottom form 23. A plurality of fastening bolts 29 are arranged at the bottom of the bottom form 23. One end of each of the plurality of fastening bolts 29 penetrates through the inner wall of the bottom form 23 and is screwed and fixed in the inner wall of the corresponding reinforcing bar 28 on one side. The bottom form 23 is arranged on the cross slide 24. The bottom form 23 can be slid back and forth, left and right through the cross slide 24, driving the heat preservation board B22 and the steel bar truss 21 above it to move synchronously, for adjusting the connection position between the steel bar truss 21 and the I-shaped steel 11. Adjusting the connection position through the cross slide 24 is more time-saving and labor-saving compared with multiple hoisting adjustments;

[0045] The cross slide 24 is arranged on one side of the side form 25, and the two are fixedly connected by a plurality of connecting pieces 27. A plurality of side form feet 26 are evenly arranged at the bottom of the side form 25. The side form 25 is fixed on the ground or other horizontal surfaces through the plurality of side form feet 26. During the installation process, the lower end of the bottom form 23 abuts against the top end of the side form 25. Since the bottom form 23 is arranged on the cross slide 24, and the cross slide 24 is connected to the side form 25 through the connecting piece 27, when the cross slide 24 is fixed, the bottom form 23 above it will also be stably supported above the side form 25. After the bottom form 23 and the side form 25 are stably connected, during the concrete pouring process, when the side form 25 deflects to one side under the filling and extrusion of the concrete, it will drive the bottom form 23 to deflect synchronously, and it is not easy to generate a notch between the two, ensuring the seal at the joint;

[0046] When the bottom form 23 slides towards the side of the I-beam 11 through the cross slide 24, it will drive the insulation board B22 and the steel bar truss 21 above it to slide synchronously until one end of the insulation board B22 abuts against one side of the longitudinal connecting steel bar 13. At this time, one end of the steel bar truss 21 above the insulation board B22 is inserted into the I-beam 11. The upper chord steel bars of the steel bar truss 21 are placed on the top of the I-beam 11. One end of the two lower chord steel bars is inserted into the gap between the plurality of suspension steel bars 12 and placed on the upper end of the longitudinal connecting steel bar 13. At this time, the steel bar truss 21 and the I-beam 11 are connected together, but not firmly, and they need to be poured with concrete to form an integral body;

[0047] The thickness of the insulation board B22 matches the diameter of the longitudinal connecting steel bar 13, and their tops are flush after connection. There is a gap between the upper end of the insulation board B22 and one side of the I-beam 11, which is set as channel A3. The concrete first enters the cavity between the insulation board A14 and one side of the side form 25 through the channel A3. There is a gap between the bottom form 23 and the insulation board B22, which is set as channel C5. The channel C5 is located below the channel A3. When the cavity between the insulation board A14 and one side of the side form 25 is filled with concrete, the slurry will flow along the channel C5 to the lower part of the insulation board B22 and wrap the plurality of reinforcing ribs 28 at the bottom of the insulation board B22. There is a gap between the side of the insulation board A14 away from the side form 25 and the upper part of the I-beam 11, which is set as channel B4. When the cavity between the insulation board A14 and one side of the side form 25 and the cavity at the bottom of the insulation board B22 are both filled with concrete, the slurry will flow along the channel B4 into the cavity on the other side of the insulation board A14. After the slurry is completely solidified, the load-bearing beam 1 and the steel bar truss floor slab 2 will form an integral body (as Figure 3 shown).

[0048] Please refer to Figures 8 to 12, the connecting member 27 includes a first sliding table 271 and a second sliding table 272. The first sliding table 271 is fixed to the bottom of the cross sliding table 24 by bolts, and the second sliding table 272 is fixed to one side of the side mold 25 by bolts. The first sliding table 271 and the second sliding table 272 are arranged correspondingly. Sliders are slidably connected to both the first sliding table 271 and the second sliding table 272, and both sliders and the corresponding sliding tables can be fixedly connected by bolts. A plug-in plate 273 is slidably connected to the bottom of the first sliding table 271, and the plug-in plate 273 is fixed to the slider of the first sliding table 271 by bolts. A support plate 275 is slidably connected to one side of the second sliding table 272, and the support plate 275 is also fixed to the slider of the second sliding table 272 by bolts;

[0049] The upper end of the support plate 275 is rotatably connected with a docking plate 274. The docking plate 274 is fixedly connected with the plug-in plate 273 by insertion. A plurality of support rods 276 are arranged between the docking plate 274 and the support plate 275. The docking plate 274 and the support plate 275 are rotatably connected. Correspondingly, when the docking plate 274 is fixedly connected with the plug-in plate 273, the plug-in plate 273 can be driven to rotate correspondingly. And the second sliding table 272 is fixed to the bottom of the cross sliding table 24. When the plug-in plate 273 rotates, the cross sliding table 24 rotates correspondingly, so that the bottom mold 23 can be driven to rotate on one side of the side mold 25, and the connection angle between the bottom mold and the side mold can be adjusted, so as to adapt to different building construction needs. Especially when the floor slab needs to be set at a certain angle, at this time, by rotating the bottom mold 23, a corresponding inclined surface can be formed at the bottom of the floor slab;

[0050] Two insertion blocks 277 are arranged at one end of the plug-in plate 273. The bottom surfaces of one ends of the two insertion blocks 277 are both set as inclined surfaces. Slots 278 are opened at the centers of the inner walls of the two insertion blocks 277. Docking holes 279 are opened on one side of the inner wall of the docking plate 274 corresponding to the two insertion blocks 277. Docking blocks 2710 are arranged in the two docking holes 279. The top surfaces of one ends of the two docking blocks 2710 are both set as inclined surfaces. The inclined surface of one end of the docking block 2710 is correspondingly arranged with the inclined surface of one end of the insertion block 277. When the insertion block 277 moves into the docking hole 279, the lower end of the insertion block 277 will abut against the docking block 2710 and push the docking block 2710 downward until the slot 278 of the insertion block 277 is located above the docking block 2710, and then the docking block 2710 will reset upward and be stuck in the slot 278, so that the insertion block 277 and the docking block 2710 can be fixedly connected together by insertion;

[0051] On one side of the bottom of the docking plate 274 corresponding to the two docking blocks 2710, sliding columns 2711 are slidably connected. One end of each sliding column 2711 is fixedly connected to the docking block 2710, and the other end extends below the docking plate 274. A shifting plate 2713 is fixed between the bottom ends of the two sliding columns 2711. Spring 2712 is sleeved on each of the two sliding columns 2711, and the upper and lower ends of the spring 2712 are respectively fixed on the docking block 2710 and the inner wall of the bottom of the jack 279. A locking bolt 2714 is provided between the shifting plate 2713 and the docking plate 274, which can lock the shifting plate 2713 on the docking plate 274;

[0052] A threaded rod 2715 is rotatably connected to the middle position inside the support plate 275. Guide rods 2716 are fixed on both sides of the threaded rod 2715 inside the support plate 275. A guide block 2717 is provided between the two guide rods 2716 and the threaded rod 2715. The guide block 2717 is slidably connected to the guide rod 2716 and is threadedly connected to the threaded rod 2715. The lower end of the threaded rod 2715 extends to the lower end of the support plate 275 and is flush with the lower end surface of the support plate 275. A cross-shaped groove is provided at the bottom end of the threaded rod 2715. Insert a cross wrench into the cross-shaped groove and rotate the wrench to drive the threaded rod 2715 to rotate, thereby driving the guide block 2717 to move up and down;

[0053] One end of the support rod 276 is arranged on one side of the guide block 2717, and the two ends of the support rod 276 are respectively provided with a first joint 2718 and a second joint 2719. One end of the support rod 276 is rotatably connected to the guide block 2717 through the first joint 2718, and the other end of the support rod 276 is rotatably connected to the bottom of the docking plate 274 through the second joint 2719. When the threaded rod 2715 rotates and drives the guide block 2717 to move downward, one end of the support rod 276 will flip outward and drive the docking plate 274 to rotate synchronously around the connection axis with the support plate 275, adjusting the connection angle between the docking plate 274 and the support plate 275. When the threaded rod 2715 does not rotate, the support rod 276 no longer flips and stably supports between the docking plate 274 and the support plate 275, fixing the two;

[0054] Please refer to again Figures 1 to 12 , a construction method for a steel bar truss floor slab, including the following steps:

[0055] Step 1: Assemble the load-bearing beam 1, assemble the I-beam 11 in the load-bearing beam 1 with the insulation board A14, and weld the suspension steel bars 12, the transverse connection steel bars 16 and the longitudinal connection steel bars 13 at both ends of the I-beam 11;

[0056] Step 2: Formwork around the load-bearing beam 1 to fix the side form 25 on one side of the load-bearing beam 1;

[0057] Step 3: Fix the cross slide 24 to one side of the side form 25 through the connecting piece 27;

[0058] Step 4: Assemble the steel bar truss, the insulation board B22 and the bottom form 23, and hoist the assembled whole onto the cross slide 24;

[0059] Step 5: First, move the bottom form 23 back and forth through the cross slide 24 to adjust the connection position between the steel bar truss and the I-beam 11, and then move the bottom form 23 left and right through the cross slide 24 to insert one end of the steel bar truss into the I-beam 11, so that the upper chord steel bar and the lower chord steel bar in the steel bar truss are respectively abutted against the I-beam 11 and the longitudinal connecting steel bar 13;

[0060] Step 6: Form a formwork on the upper side of the steel bar truss and leave a notch, and pour concrete from the notch;

[0061] Step 7: After the concrete reaches the form removal condition, remove the cross slide 24, the side form 25 and the bottom form 23 in sequence, and the floor slab is formed.

[0062] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0063] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bearing structure of a steel truss floor deck, comprising a load-bearing beam (1) and steel truss floor decks (2) symmetrically arranged on both sides of the load-bearing beam (1), characterized in that: The load-bearing beam (1) comprises an I-shaped steel (11), a plurality of suspension steel bars (12) are uniformly fixed longitudinally at both ends of the bottom of the I-shaped steel (11), a longitudinal connecting steel bar (13) is welded and fixed between the plurality of suspension steel bars (12) on adjacent sides, and insulation boards A (14) are provided on both sides of the lower part of the I-shaped steel (11); The steel bar truss floor deck (2) comprises a steel bar truss (21), an insulation board B (22), a bottom form (23), a cross slide (24), a side form (25) and a connecting piece (27); the steel bar truss (21) is fixed on the top of the insulation board B (22); the insulation board B (22) is arranged above the bottom form (23); the bottom form (23) is arranged on the cross slide (24); the cross slide (24) is arranged on one side of the side form (25); and the two are connected and fixed via a plurality of connecting pieces (27); The thickness of the insulation board B (22) matches the diameter of the longitudinal connecting steel bar (13) and the tops thereof remain flush after the two are connected; a gap is left between the insulation board B (22) and the upper end of one side of the I-shaped steel (11) and is set as a channel A (3); a gap is left between the bottom mold (23) and the insulation board B (22) and is set as a channel C (5); the channel C (5) is located below the channel A (3); a gap is left between the side of the insulation board A (14) away from the side mold (25) and the upper part of the I-shaped steel (11) and is set as a channel B (4).

2. The bearing mechanism of the steel bar truss floor deck according to claim 1, characterized in that: The bottom ends of the two insulation boards A (14) are both against the steel body surface at the bottom end of the I-shaped steel (11), and the upper ends of the two insulation boards A (14) are not in contact with the upper end of the I-shaped steel (11). The insulation boards A (14) and the I-shaped steel (11) are connected and fixed by a plurality of angle steels (15). A plurality of transverse connecting steel bars (16) are also arranged between the I-shaped steel (11) and the suspension steel bars (12) on both sides. One end of the transverse connecting steel bar (16) is welded and fixed to the I-shaped steel (11), and the other end passes through the insulation board A (14) on the corresponding side and is welded and fixed to the longitudinal connecting steel bar (13) on the corresponding side.

3. The bearing mechanism of the steel bar truss floor deck according to claim 1, characterized in that: The steel bar truss (21) comprises an upper chord steel bar and two lower chord steel bars, the two lower chord steel bars are symmetrically arranged on both sides below the upper chord steel bar, the two lower chord steel bars are welded and fixed to the upper chord steel bar via a continuously bent wavy web reinforcement, a plurality of strip-shaped transverse reinforcing ribs (28) are evenly fixed to the bottom of the insulation board B (22), a plurality of fastening bolts (29) are arranged at the bottom of the bottom mold (23), one end of each of the plurality of fastening bolts (29) passes through the inner wall of the bottom mold (23) and is screwed and fixed to the inner wall of the reinforcing rib (28) on the corresponding side.

4. The bearing mechanism of the steel bar truss floor deck according to claim 1, characterized in that: The connecting member (27) includes a first slide (271) and a second slide (272), wherein the first slide (271) is fixed to the bottom of the cross slide (24) by bolts, and the second slide (272) is fixed to one side of the side mold (25) by bolts, the bottom of the first slide (271) is slidably connected with a plug-in plate (273), one side of the second slide (272) is slidably connected with a support plate (275), the upper end of the support plate (275) is rotatably connected with a docking plate (274), a plurality of support rods (276) are arranged between the docking plate (274) and the support plate (275), and the docking plate (274) and the plug-in plate (273) are plugged and fixed.

5. The bearing mechanism of the steel bar truss floor deck according to claim 4, characterized in that: Two plug blocks (277) are arranged at one end of the plug board (273), the bottom surfaces of one end of the two plug blocks (277) are arranged as inclined surfaces, a slot (278) is provided at the center of the inner wall of the two plug blocks (277), a plug hole (279) is provided on one side of the inner wall of the docking plate (274) corresponding to the two plug blocks (277), a docking block (2710) is arranged in each of the two plug holes (279), the top surfaces of one end of the two docking blocks (2710) are arranged as inclined surfaces, and the inclined surface at one end of the docking block (2710) is arranged corresponding to the inclined surface at one end of the plug block (277) and used in combination.

6. The bearing mechanism of the steel bar truss floor deck according to claim 5, characterized in that: A sliding column (2711) is slidably connected to one side of the two docking blocks (2710) at the bottom of the docking plate (274), one end of the sliding column (2711) is connected and fixed to the docking block (2710), and the other end extends to the bottom of the docking plate (274), a shift plate (2713) is fixed between the bottom ends of the two sliding columns (2711), and a spring (2712) is sleeved on the two sliding columns (2711), and the upper and lower ends of the spring (2712) are respectively fixed to the docking block (2710) and the inner wall of the bottom of the plug hole (279), and a locking bolt (2714) is provided between the shift plate (2713) and the docking plate (274).

7. The bearing mechanism of the steel bar truss floor deck according to claim 6, characterized in that: A threaded rod (2715) is rotatably connected to the middle position inside the support plate (275), and guide rods (2716) are fixed on both sides of the support plate (275) corresponding to the threaded rod (2715). A guide block (2717) is arranged between the two guide rods (2716) and the threaded rod (2715), and the guide block (2717) is slidably connected to the guide rod (2716), and the guide block (2717) is threadedly connected to the threaded rod (2715). The lower end of the threaded rod (2715) extends to the lower end of the support plate (275) and is flush with the lower end surface of the support plate (275), and a cross groove is provided at the bottom end of the threaded rod (2715).

8. The bearing mechanism of the steel bar truss floor deck according to claim 7, characterized in that: One end of the support rod (276) is arranged on one side of the guide block (2717), and the two ends of the support rod (276) are respectively provided with a first joint (2718) and a second joint (2719); one end of the support rod (276) is rotatably connected to the guide block (2717) through the first joint (2718), and the other end of the support rod (276) is rotatably connected to the bottom of the docking plate (274) through the second joint (2719).

9. A construction method for a bearing mechanism of a steel bar truss floor deck as claimed in claims 1 to 8, characterized in that: The steps include: Step 1: Assemble the load-bearing beam (1), assemble the I-shaped steel (11) and the insulation board A (14) in the load-bearing beam (1), and weld the suspension steel bars (12) and the transverse connecting steel bars (16) and the longitudinal connecting steel bars (13) at both ends of the I-shaped steel (11); Step 2: Supporting the outer formwork of the load-bearing beam (1) so that the side formwork (25) is fixed on one side of the load-bearing beam (1); Step 3: Fix the cross slide (24) to one side of the side mold (25) through the connecting piece (27); Step 4: Assemble the steel truss, insulation board B (22) and bottom mold (23), and hoist the assembled whole onto the cross slide (24); Step 5: first, the bottom mold (23) is moved forward and backward by the cross slide (24) to adjust the connection position between the steel truss and the I-shaped steel (11), and then the bottom mold (23) is moved left and right by the cross slide (24) to insert one end of the steel truss into the I-shaped steel (11), so that the upper chord steel bars and the lower chord steel bars in the steel truss are respectively against the I-shaped steel (11) and the longitudinal connecting steel bars (13); Step 6: Support the side formwork on the steel truss and leave a gap, and pour concrete from the gap; Step 7: After the concrete reaches the demoulding condition, the cross slide (24), the side mold (25) and the bottom mold (23) are removed in sequence.

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