Steel bar truss concrete laminated slab

Abstract

The utility model discloses a steel bar truss concrete laminated slab, which belongs to the technical field of building prefabricated structures and comprises a concrete base and a truss body, a limiting net is arranged in the concrete base, and the limiting net is formed by fixing a plurality of transverse limiting rods and a plurality of longitudinal limiting rods in a crossed manner. A plurality of limiting openings are formed between the transverse limiting rods and the longitudinal limiting rods, the truss bodies are evenly arranged at the top of the concrete, each truss comprises supports and an ejector rod, the ejector rods are parallel to the plane where the concrete base is located, the supports are evenly installed on the ejector rods, and the supports are arranged on the concrete base. And the bottoms of the supports penetrate through the top of the concrete base, are located in the corresponding limiting openings and are fixedly connected, the connectivity between the truss and the concrete base can be improved, and therefore the overall stress performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building prefabricated structures, and more specifically, to a reinforced truss concrete composite slab. Background Technique

[0002] The existing concrete truss composite slab is mainly composed of a bottom plate and a truss. The truss includes an upper chord, web members, and a lower chord. Currently, when prefabricating the concrete truss composite slab, the truss needs to be arranged on the bottom formwork. After the truss is arranged, the bottom formwork and the truss are poured and formed. After it is completely set, the bottom formwork is disassembled to complete the prefabrication of the concrete truss composite slab.

[0003] In the existing reinforced truss concrete composite slab, the truss is directly poured inside the concrete base, and there will be phenomena such as loosening caused by unstable connection between the truss and the concrete base, which will reduce the mechanical properties of the concrete composite slab. In view of the above problems, a solution is proposed below. Summary of the Utility Model

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a reinforced truss concrete composite slab, which can improve the connection between the truss and the concrete base, thereby improving the overall mechanical properties.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A reinforced truss concrete composite slab includes a concrete base and a truss body. A limiting net is arranged inside the concrete base. The limiting net is formed by cross-fixing a plurality of transverse limiting rods and a plurality of longitudinal limiting rods. A plurality of limiting openings are formed between the plurality of transverse limiting rods and longitudinal limiting rods. A plurality of the truss bodies are arranged and evenly distributed on the top of the concrete. The truss includes a bracket and a top rod. The top rod is parallel to the plane where the concrete base is located. A plurality of the brackets are arranged, and the plurality of brackets are evenly installed on the top rod. The bottom of the bracket passes through the top of the concrete base and is located inside the corresponding limiting opening and is fixedly connected.

[0007] Preferably, the bracket includes a connecting rod. There are two connecting rods, and the two connecting rods are symmetrically arranged. The top rod is arranged between the two connecting rods, and the top rod is fixedly connected to the connecting rod. The connecting rod is in an inverted V shape.

[0008] Preferably, the tops of the two connecting rods are fixedly connected to the top rod, and the ends of the connecting rods are designed to be outwardly expanded.

[0009] Preferably, a clamping rod is provided at the connection between the bracket and the limiting plate. The clamping rod is fixedly connected to the limiting mesh and clamps the bracket. There are two clamping rods, and the two clamping rods are symmetrically arranged between the two connecting rods. Both of the two clamping rods are parallel to the top rod, and the clamping rod is fixedly connected to the limiting mesh.

[0010] Preferably, the clamping rod and the limiting mesh are fixed by welding.

[0011] Preferably, a number of convex rods are evenly arranged on one side of the clamping rod, and one ends of the number of convex rods are fixedly connected to the corresponding limiting mesh brackets by welding.

[0012] Preferably, the transverse limiting rod, the longitudinal limiting rod and the clamping rod are all made of steel bars.

[0013] Compared with the prior art, the advantages of the present utility model are as follows:

[0014] First, in this solution, the limiting mesh and the clamping rod play a clamping effect on the inclined bracket, thereby preventing separation between the bracket and the limiting mesh. The limiting mesh can increase the contact area between the bracket and the concrete base, thereby ensuring the connection stability between the truss body and the concrete base. The presence of the limiting mesh increases the contact area between the bracket and the concrete base, helps to reduce local stress concentration, and at the same time the limiting mesh can increase the strength and bearing capacity of the concrete base.

[0015] Second, the symmetrical arrangement and V-shaped design of the connecting rods are used for the support of the top rod, and at the same time ensure the connection area between the connecting rods and the top rod and the concrete base, ensuring the stability of the connection.

[0016] Third, the outward expansion design can increase the area between the connecting rod and the concrete base, reduce the occurrence of bending, and ensure the stable support of the top rod.

[0017] Fourth, since the connecting rod is inclined, the clamping rod is used to cooperate with the limiting mesh to limit the connecting rod, and the connecting rod cannot be separated from the limiting mesh, that is, to ensure the connection stability between the connecting rod and the concrete base.

[0018] Fifth, the welding operation is simple and the connection is stable.

[0019] Sixth, on the one hand, the convex rod can ensure the stable connection between the clamping rod and the limiting mesh, and on the other hand, it can cooperate with the fiber mesh to further clamp and limit the connecting rod, ensuring the stability of the limitation of the connecting rod. Description of the Drawings

[0020] Figure 1 is the overall structure diagram of the present utility model;

[0021] Figure 2 is the structural diagram of the limiting mesh and the truss body in the first embodiment of the present utility model;

[0022] Figure 3 Three - dimensional structure schematic diagram of the limit net, truss body, clamping rod and convex rod for the second embodiment of the utility model;

[0023] Figure 4 Front - view structure schematic diagram of the limit net, truss body, clamping rod and convex rod for the second embodiment of the utility model;

[0024] Figure 5 Bottom - view structure schematic diagram of the limit net, truss body, clamping rod and convex rod for the second embodiment of the utility model;

[0025] Figure 6 Enlarged structure schematic diagram of A for the second embodiment of the utility model.

[0026] Explanation of the reference numerals in the figure:

[0027] 1, concrete base; 2, truss body; 3, limit net; 4, transverse limit rod; 5, longitudinal limit rod; 6, limit opening; 7, bracket; 8, top rod; 9, clamping rod; 10, connecting rod; 11, convex rod. Specific implementation manners

[0028] Embodiment 1:

[0029] Please refer to Figure 1-2 , a reinforced truss concrete composite slab, including a concrete base 1. A limit net 3 is arranged inside the concrete base 1. The limit net 3 includes a transverse limit rod 4 and a longitudinal limit rod 5. Both the transverse limit rod 4 and the longitudinal limit rod 5 are made of steel bars. A plurality of transverse limit rods 4 are provided and are parallel to each other. The plurality of transverse limit rods 4 are arranged in a straight line and evenly. A plurality of longitudinal limit rods 5 are provided and are parallel to each other, and the plurality of longitudinal limit rods 5 are arranged in a straight line and evenly on the upper end of the transverse limit rods 4. The transverse limit rod 4 and the longitudinal limit rod 5 are fixed by welding. The welding method is simple and stable. The transverse limit rod 4 and the longitudinal limit rod 5 are perpendicular to each other. The adjacent transverse limit rod 4 and longitudinal limit rod 5 form a rectangular limit opening 6. The limit net 3 can improve the strength of the concrete base 1.

[0030] The top of the concrete is uniform and provided with several truss bodies 2. The truss includes a bracket 7 and a top rod 8. The top rod 8 is parallel to the plane where the concrete base 1 is located. There are several brackets 7. The bracket 7 includes connecting rods 10. There are two connecting rods 10. The connecting rods 10 are in an inverted V shape. The two connecting rods 10 are symmetrically arranged. The top rod 8 is arranged between the two connecting rods 10. The top rod 8 and the top of the connecting rods 10 are fixedly connected. The cross-section of the plane of the two corresponding connecting rods 10 is in an inverted V shape, that is, the four feet of the bracket 7 expand outwards to form a quadrangular pyramid shape. The end of the bracket 7 passes through the concrete base 1 and is located inside the concrete base 1, and the end of the bracket 7 is located inside the corresponding limiting opening 6. The four feet of the bracket 7 are respectively at the four right angles of the corresponding limiting opening 6. Since the bracket 7 is in a pyramid shape, when the four feet of the bracket 7 are just clamped, the bracket 7 and the limiting net 3 will not be separated.

[0031] Embodiment 2:

[0032] Please refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , a reinforced truss concrete composite slab, which is different from Embodiment 1 in that it further includes two clamping rods 9 arranged at the bottom of the top rod 8. The clamping rods 9 are attached to the upper surface of the transverse limiting rod 4, and the clamping rods 9 are parallel to the vertical limiting rod. The clamping rods 9 and the corresponding vertical limiting rod form a clamping groove. The connecting rods 10 are arranged inside the clamping opening. One side of the connecting rod 10 is provided with a convex rod 11. The convex rod 11 is arranged inside the clamping groove, and the convex rod 11 and the corresponding transverse limiting rod 4 are respectively arranged on both sides of the corresponding connecting rod 10. The two ends of the convex rod 11 are respectively fixedly connected to the longitudinal limiting rod 5 and the clamping rod 9. The ends of the connecting rod 10 are respectively in contact with the corresponding transverse limiting rod 4, longitudinal limiting rod 5, clamping rod 9 and convex rod 11.

[0033] Working principle:

[0034] During use, first install the truss body 2 on the base, then arrange the horizontal limiting rod 4 and the vertical limiting rod in sequence and insert them. Weld the horizontal limiting rod 4 and the vertical limiting rod by welding to form the limiting net 3. At this time, the bracket 7 is restricted through the limiting opening 6. Then arrange the clamping rod 9 on the limiting net 3, and weld the clamping rod 9 and the convex rod 11 to the limiting net 3 by welding. At this time, the bracket 7 is clamped and limited by the convex rod 11, the clamping rod 9 and the limiting net 3. Then weld the contact surfaces of the bracket 7, the limiting net 3, the convex rod 11 and the clamping rod 9 to further ensure the firmness of the connection. The stable connection between the bracket 7 and the limiting net 3 can be ensured through multiple fixing methods of clamping and welding. At this time, pour concrete onto the base. The height of the concrete should be higher than the limiting net 3. After the concrete solidifies, it forms the concrete base 1. Then remove the base to form a complete truss concrete composite slab. Through the limiting net 3, on the one hand, the bearing strength of the concrete base 1 can be increased, and at the same time, the connection to the truss body 2 can be increased, ensuring the firm connection between the truss and the concrete base 1, increasing the force on the truss body 2, and preventing the separation of the truss body 2 from the concrete base 1.

Claims

1. A reinforced concrete truss composite slab, characterized in that: The invention comprises a concrete base (1) and a truss body (2). A limiting net (3) is arranged inside the concrete base (1). The limiting net (3) is formed by a plurality of transverse limiting rods (4) and a plurality of longitudinal limiting rods (5) being cross-fixed. A plurality of limiting openings (6) are formed between the plurality of transverse limiting rods (4) and the longitudinal limiting rods (5). The truss body (2) is provided with a plurality of limiting openings (6) which are evenly arranged on the top of the concrete. The truss comprises a bracket (7) and a top rod (8). The top rod (8) is parallel to the plane where the concrete base (1) is located. The bracket (7) is provided with a plurality of brackets (7). The plurality of brackets (7) are evenly mounted on the top rod (8). The bottom of the bracket (7) passes through the top of the concrete base (1) and is located inside the corresponding limiting opening (6) and is fixedly connected.

2. The reinforced concrete composite slab according to claim 1, characterized in that: The bracket (7) comprises a connecting rod (10), two connecting rods (10) are provided and the two connecting rods (10) are symmetrically arranged, the top rod (8) is arranged between the two connecting rods (10), and the top rod (8) and the connecting rod (10) are fixedly connected, and the connecting rod (10) is in an inverted V shape.

3. The reinforced concrete composite slab according to claim 2, characterized in that: The tops of the two connecting rods (10) are fixedly connected to the top rod (8), and the ends of the connecting rods (10) are designed to expand outwards.

4. The reinforced concrete composite slab according to claim 1, characterized in that: A clamping rod (9) is provided at the connection between the bracket (7) and the limiting plate. The clamping rod (9) is fixedly connected to the limiting net (3) and clamps the bracket (7). Two clamping rods (9) are provided, and the two clamping rods (9) are symmetrically arranged between the two connecting rods (10). The two clamping rods (9) are parallel to the top rod (8), and the clamping rod (9) is fixedly connected to the limiting net (3).

5. The reinforced concrete composite slab according to claim 4, characterized in that: The clamping rod (9) and the limiting net (3) are fixed by welding.

6. The reinforced concrete composite slab according to claim 4, characterized in that: A plurality of protruding rods (11) are evenly arranged on one side of the clamping rod (9), and one end of the plurality of protruding rods (11) is welded and fixed to a corresponding bracket (7) of the limiting net (3).

7. The reinforced concrete composite slab according to claim 4, characterized in that: The transverse limiting rod (4), the longitudinal limiting rod (5) and the clamping rod (9) are all made of steel bars.

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