High-strength steel bar truss floor support plate

Abstract

The utility model relates to the technical field of floor support plates, in particular to a high-strength steel bar truss floor support plate. The steel bar truss comprises a bottom plate with a lower groove and a steel bar truss body arranged in the lower groove, the steel bar truss body comprises an upper chord steel bar, lower chord steel bars on the left side and the right side, web members and stand columns located at the two ends of the steel bar truss body, and a set of reinforcing steel bars are arranged in the length direction of the steel bar truss body. Each reinforcing steel bar is fixedly connected with the lower chord steel bars on the left side and the right side; protruding strips used for supporting the reinforcing steel bars are arranged in the lower groove of the bottom plate in the length direction of the lower groove. The utility model has the characteristic of good overall strength.

Description

Technical Field

[0001] This utility model relates to the field of floor decking technology, specifically a high-strength steel truss floor decking. Background Technology

[0002] A truss constructed by resistance spot welding steel bars as the top chord, bottom chord, and web members is called a steel truss. A composite load-bearing slab formed by resistance spot welding steel trusses and a base plate is called a steel truss floor deck, used to support the concrete floor.

[0003] Existing floor decks with double-layer steel trusses are usually slab structures. The bottom plate is molded to form a groove structure to strengthen the bottom plate. However, gaps are generated at the contact points between the bottom plate and the steel bars. When pouring concrete, the concrete cannot quickly and efficiently fill the gaps between the bottom plate and the steel bars. If the concrete is not poured in place, it will affect the quality of the floor slab. Summary of the Invention

[0004] The purpose of this utility model is to solve the problem of gaps occurring at the contact points between the bottom plate and the reinforcing bars of steel truss floor slabs, which affect the quality of the floor slab.

[0005] This utility model includes a base plate with a lower groove and a steel truss set in the lower groove. The steel truss includes an upper chord steel bar, lower chord steel bars on the left and right sides, web members, and columns located at both ends of the steel truss. A set of reinforcing steel bars is arranged along the length of the steel truss, and each reinforcing steel bar is fixedly connected to the lower chord steel bars on the left and right sides respectively. The lower groove of the base plate has protrusions along its length for supporting the reinforcing steel bars.

[0006] Furthermore, the cross-section of the protrusion is inverted triangular, and its upper surface has an upper groove along the length of the protrusion. The end connector of the upper chord steel bar is cross-shaped, and its lower end is located in the upper groove.

[0007] Furthermore, the protrusion is formed by bending the base plate.

[0008] Furthermore, each reinforcing bar is located below the lower chord reinforcing bars on the left and right sides. The reinforcing bars are straight rods, or their two ends are bent upwards and located outside the lower chord reinforcing bars on the left and right sides, respectively.

[0009] Furthermore, a positioning steel bar is used to fix the middle of each reinforcing steel bar, and both ends of the positioning steel bar are fixedly connected to the column.

[0010] Furthermore, the positioning steel bar is located above each reinforcing steel bar.

[0011] Furthermore, there are protruding support bars on both sides of the protrusion on the bottom surface of the lower groove, and the support bars are respectively engaged with the bottom of the web members on both sides.

[0012] The fixed connection between each reinforcing bar and the lower chord bar, the further connection between the first reinforcing bar and the web members and the lower chord bar, and the connection between the positioning bar and each reinforcing bar all enhance the strength of the steel truss itself. Moreover, the spaces left for pouring cement and storing cement in the upper groove, the sides of the protrusion, etc., ensure the overall firmness and stability of this utility model. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the base plate in this embodiment;

[0016] Figure 4 This is a top view of the connection between the web members and the steel truss in this embodiment;

[0017] Figure 5 This is a three-dimensional schematic diagram of a part of this embodiment (the upper chord reinforcement is not shown in the figure);

[0018] Among them, 1. base plate, 2. first reinforcing bar, 3. left lower chord bar, 4. web member, 5. upper chord bar, 6. column, 7. right lower chord bar, 8. lower groove, 9. protruding bar, 10. support bar, 11. upper groove, 12. positioning bar, 13. second reinforcing bar. Detailed Implementation

[0019] As shown in the figure, this embodiment includes a base plate 1, which is composed of multiple connected units along its width. Each unit includes a lower groove 8 along its length. The bottom of each lower groove 8 has a protruding strip 9 along its axial direction. The protruding strip 9 is basically inverted triangular in shape and is formed by bending the base plate 1, i.e., it is an integral structure with the base plate 1. A downward-facing upper groove 11 is provided on the upper surface of the protruding strip 9. There is also a support strip 10 parallel to the protruding strip 9 in the lower groove 8 on both sides of the protruding strip 9. Each support strip 10 is also formed by bending the base plate 1.

[0020] Each lower groove 8 contains a steel truss. Each steel truss includes an upper chord steel bar 5, a left lower chord steel bar 3, and a right lower chord steel bar 7. The upper chord steel bar 5 is fixedly connected to the left lower chord steel bar 3 and the right lower chord steel bar 7 via web members on both sides (the web member on the left is web member 4). Each of the two web members has an outwardly bent lower leg, which is respectively set on two support bars 10. At each end of the upper chord steel bar 5, the upper end of a column 6 is fixedly connected to it, and the lower end of the column 6 is located in the upper groove 11.

[0021] The left lower chord steel bar 3 and the right lower chord steel bar 7 are fixedly connected by reinforcing bars. The reinforcing bars near the ends of the upper and lower chord steel bars are also fixedly connected to the column 6.

[0022] This embodiment uses two types of reinforcing bars: a straight second reinforcing bar 13 and a first reinforcing bar 2 bent at both ends. The first and second reinforcing bars are spaced apart along the length of the two lower chord reinforcing bars 3 and 7. The spacing can be regular, such as alternating intervals or other regular intervals, or it can be irregular. However, a certain number of first reinforcing bars 2 must be used; for example, first reinforcing bars 2 can be used near the ends and middle of the lower chord reinforcing bars, while second reinforcing bars 13 are used at other locations. In this embodiment, the first reinforcing bars 2 are located at both ends of the two lower chord reinforcing bars 3 and 7. The ends of the first reinforcing bars 2 are bent upwards, securing the two lower chord reinforcing bars 3 and 7 between their bent portions and the adjacent web members 4. These two first reinforcing bars 2 are also fixedly connected to the column 6. A positioning bar 12, fixedly connected to each reinforcing bar, is located above the middle of each reinforcing bar, with both ends fixedly connected to the column 6.

[0023] In this embodiment, the fixed connection between each reinforcing bar and the lower chord reinforcing bar, the further connection between the first reinforcing bar 2 and the web members and the lower chord reinforcing bar, and the connection between the positioning reinforcing bar 12 and each reinforcing bar all enhance the strength of the steel truss itself. The design of the protrusion 9 in the lower groove 8 further enhances the support of the base plate 1 for the steel truss. Since the protrusion is in the shape of an inverted triangle, cement can be poured into the gaps on both sides of the inverted triangle, thereby forming a tensile force between the base plate 1 and the steel truss, thus ensuring the overall stability of this embodiment. Similarly, the design of the upper groove 11 and the placement of the positioning reinforcing bar 12 above each reinforcing bar are both to ensure that there is a certain gap between the positioning reinforcing bar 12 and the surface of the protrusion 9, thereby ensuring that cement fills the gap between the two, further ensuring the overall strength of this embodiment. It can be seen that this embodiment has the characteristic of good overall strength.

Claims

1. A high-strength steel truss floor deck, comprising a base plate with a recessed groove and a steel truss disposed within the recessed groove, the steel truss comprising top chord reinforcement, left and right bottom chord reinforcement, web members, and columns located at both ends of the steel truss, characterized in that: A set of reinforcing bars is provided along the length of the steel truss, and each reinforcing bar is fixedly connected to the lower chord bars on the left and right sides respectively; there are protrusions in the lower groove of the bottom plate along its length to support the reinforcing bars.

2. The high-strength steel truss floor decking according to claim 1, characterized in that: The protruding bar has an inverted triangular cross section, with an upper groove on its upper surface along the length of the protruding bar. The end connector of the upper chord steel bar is cross-shaped, with its lower end located in the upper groove.

3. The high-strength steel truss floor decking according to claim 1 or 2, characterized in that: The protrusion is formed by bending the base plate.

4. The high-strength steel truss floor decking according to claim 1 or 2, characterized in that: Each reinforcing bar is located below the lower chord bars on the left and right sides. The reinforcing bars are straight rods, or their two ends are bent upwards and located outside the lower chord bars on the left and right sides, respectively.

5. The high-strength steel truss floor decking according to claim 1 or 2, characterized in that: A positioning steel bar is used to fix the middle of each reinforcing steel bar, and both ends of the positioning steel bar are fixedly connected to the column.

6. The high-strength steel truss floor decking according to claim 5, characterized in that: The positioning steel bar is located above each reinforcing steel bar.

7. The high-strength steel truss floor decking according to claim 1 or 2, characterized in that: The bottom surface of the lower groove has protruding support bars on both sides of the protrusion, and the support bars are respectively engaged with the bottom of the web members on both sides.

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