Fireproof steel plate concrete composite shear wall

Abstract

The utility model discloses a kind of fireproof steel plate concrete composite shear wall, specifically related to building technology field, including two steel plates, and two groups of connecting parts being arranged between two steel plates, two connecting parts are all made of three connecting pipes, and three connecting pipes are in triangular distribution, and the outer side of two steel plates is all provided with reinforcing connection mechanism;Reinforcing connection mechanism includes multiple fixedly connected protrusions on the outer side of steel plate.The utility model is combined with the positioning block and the connecting pipe surface positioning frame by steel plate surface multiple protrusions, increases the contact surface of concrete and steel plate, connecting pipe, makes protrusion and positioning block embed concrete, effectively transfers shear force by its own shear capacity, improves steel plate concrete structure bearing capacity and combination connection stability, utilizes multilayer expandable graphite and expands into worm-like fluffy structure when high temperature, so that steel plate forms double fireproof heat insulation, blocks heat transfer to interior, delays steel plate strength degradation and concrete burst.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and more specifically, to a fireproof steel plate concrete composite shear wall. Background Technology

[0002] Currently, shear walls are often essential load-bearing components in high-rise and super high-rise buildings. The most commonly used type is the steel-concrete composite shear wall, which consists of an outer steel plate and an inner concrete filling. In current related technologies, common composite shear walls typically include two vertically arranged steel plates and several tie bolts located between the two steel plates and connecting them. One end of the tie bolt passes through the two steel plates in sequence along its length. Nuts are provided on the opposite sides of the two steel plates, and the two nuts are respectively fitted onto the ends of the two tie bolts and threadedly connected to them. The space between the two steel plates is filled with concrete.

[0003] The existing steel plates have poor fire resistance, which in turn leads to poor fire resistance of the composite shear walls. When a fire occurs in a building, the steel plates are prone to deformation or loss of load-bearing capacity, which may result in the collapse of the composite shear walls.

[0004] A search revealed that Chinese Patent CN214574875U discloses a composite shear wall made of steel plate and concrete for ultra-high-rise buildings. This device can prevent fire from directly contacting the steel plate and slow down the transfer of heat to the steel plate, thereby reducing the deformation of the steel plate caused by heat. Compared with traditional technology, it can improve the fire resistance of the steel plate, ensure the load-bearing capacity of the steel plate, and thus ensure the fire resistance of the composite shear wall, reduce the possibility of the composite shear wall collapsing, and ensure the safety of the building.

[0005] However, in actual use, the shear force of the above-mentioned composite shear wall is mainly transmitted through friction (from the shrinkage and chemical bonding force of the concrete) between the steel plate and the concrete interface. This force is very limited and unreliable. In the event of fire or vibration, cracks may appear between the concrete and the steel plate, affecting the overall stability and safety. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fireproof steel plate concrete composite shear wall to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A fireproof steel plate and concrete composite shear wall includes two steel plates and two sets of connecting parts disposed between the two steel plates. Each of the two connecting parts consists of three connecting pipes arranged in a triangular pattern. A reinforcing connecting mechanism is provided on the outer side of each of the two steel plates. The reinforcing connecting mechanism includes multiple protrusions fixedly connected to the outer side of the steel plate, arranged in a rectangular pattern on the surface of the steel plate. Multiple positioning blocks are fixedly connected to the surface of the steel plate, and the cross-section of the positioning blocks is trapezoidal. A cavity is formed on the inner side of each of the two steel plates, and a heat insulation plate and an inner plate are provided on the inner side of each cavity. Multiple first insertion holes are formed between the steel plate, the heat insulation plate, and the inner plate. The first insertion holes on the inner side of the two steel plates are inserted into the two ends of the multiple connecting pipes. Positioning rings are fixedly connected to both sides of the connecting pipe surface, and multiple second insertion holes and threaded holes are opened at both ends of the multiple connecting pipes. The multiple second insertion holes are distributed in a circular array at both ends of the connecting pipes with two threaded holes as the center. Positioning frames are provided on the upper and lower sides of the multiple connecting pipes, and multiple openings for concrete to pass through are opened on the surface of the multiple positioning frames. Multiple protective plates are provided on the surface of the two steel plates, and multiple insertion rods are fixedly connected to the sides of the multiple protective plates. The multiple insertion rods are inserted into the multiple second insertion holes at the ends of the connecting pipes, and the protective plates and connecting pipes are connected by screws. The two steel plates are symmetrically arranged at both ends of the multiple connecting pipes, and multiple positioning blocks are evenly distributed on the surface of the steel plates. Heat insulation mechanisms are provided on the inner side of the two steel plates.

[0008] By adopting the above technical solution, the contact surface with concrete is increased by multiple protrusions and positioning blocks between the two steel plates, so that an effective connection strength is formed between the steel plates and the concrete, and sufficient connection force can be applied between the two steel plates by using two sets of triangularly distributed connecting pipes.

[0009] As a further description of the above technical solution: the heat insulation mechanism includes a cavity two opened on the inner side of the inner plate, and a plurality of through holes are opened on one side of the inner plate, and the plurality of through holes are connected to the cavity two. Three expandable graphite are fixedly connected to the inner side of the cavity two, and the three expandable graphite are evenly distributed on the inner side of the inner plate.

[0010] By adopting the above technical solution, the steel plate can have a dual fireproof and heat insulation effect by using expandable graphite that can be expanded by heat and combined with heat insulation board.

[0011] The technical effects and advantages of this utility model are as follows: 1. By setting up a reinforced connection mechanism, compared with the existing technology, multiple protrusions and positioning blocks on the surface of the steel plate are combined with the positioning frame on the surface of the connecting pipe to increase the contact surface between the concrete and the steel plate and the connecting pipe. Multiple protrusions and positioning blocks are deeply embedded in the concrete, and through their own shear resistance, they can effectively transfer huge shear forces between the steel plate and the concrete, improve the load-bearing capacity of the steel plate concrete structure, and improve the stability of the combined connection between the concrete and the steel plate. 2. By setting up a heat insulation mechanism, compared with the existing technology, the multi-layer expandable graphite can expand when exposed to high temperature, forming a worm-like fluffy structure, thereby making the steel plate form a double fireproof and heat-insulating structure. This can effectively block the heat transfer to the internal concrete and steel bars, effectively delaying the strength degradation of the steel plate and the cracking of the concrete. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0014] Figure 3 This is a partial schematic diagram of the connection between the connecting pipe and the protective plate of this utility model.

[0015] Figure 4 This is a partial schematic diagram of the connection between the protective plate and the insertion rod of this utility model.

[0016] Figure 5 This is a partial schematic diagram of the connection between the connecting pipe and the positioning frame of this utility model.

[0017] Figure 6 This is a partial schematic diagram of the connection between the steel plate and the inner plate of this utility model.

[0018] Figure 7 This is a partial schematic diagram of the connection between the steel plate and the positioning block of this utility model.

[0019] Figure 8 For the present utility model Figure 8 Enlarged diagram of A in the middle.

[0020] The attached diagram is labeled as follows: 1. Steel plate; 2. Connecting pipe; 3. Protrusion; 4. Heat insulation plate; 5. Inner plate; 6. First insertion hole; 7. Positioning block; 8. Positioning ring; 9. Positioning frame; 10. Second insertion hole; 11. Protective plate; 12. Insert rod; 13. Screw; 14. Cavity II; 15. Expandable graphite; 16. Through hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The embodiments disclosed in this application are as follows: Figures 1-8 The fireproof steel plate and concrete composite shear wall shown includes two steel plates 1 and two sets of connecting parts disposed between the two steel plates 1. Each connecting part consists of three connecting pipes 2, which are arranged in a triangular pattern. Reinforcing connecting mechanisms are provided on the outer sides of both steel plates 1. The reinforcing connecting mechanisms include multiple protrusions 3 fixedly connected to the outer sides of the steel plates 1, which are arranged in a rectangular pattern on the surface of the steel plates 1. Multiple positioning blocks 7 are fixedly connected to the surface of the steel plates 1, and the cross-section of the positioning blocks 7 is trapezoidal. A cavity is formed on the inner side of each of the two steel plates 1, and a heat insulation plate 4 and an inner plate 5 are provided on the inner side of each cavity. Multiple first insertion holes 6 are formed between the steel plates 1, the heat insulation plate 4, and the inner plate 5. The first insertion holes 6 on the inner sides of the two steel plates 1 are inserted into the two ends of the multiple connecting pipes 2. Positioning rings 8 are fixedly connected to both sides, and multiple second insertion holes 10 and threaded holes are opened at both ends of multiple connecting pipes 2. The multiple second insertion holes 10 are distributed in a ring array at both ends of the connecting pipes 2 with two threaded holes as the center. Positioning frames 9 are provided on the upper and lower sides of multiple connecting pipes 2, and multiple openings for concrete to pass through are opened on the surface of multiple positioning frames 9. Multiple protective plates 11 are provided on the surface of two steel plates 1, and multiple insertion rods 12 are fixedly connected to the side of multiple protective plates 11. Multiple insertion rods 12 are inserted into multiple second insertion holes 10 at the end of the connecting pipes 2, and the protective plates 11 and the connecting pipes 2 are connected by screws 13. Two steel plates 1 are symmetrically arranged at both ends of multiple connecting pipes 2, and multiple positioning blocks 7 are evenly distributed on the surface of steel plates 1. Heat insulation mechanisms are provided on the inner side of both steel plates 1. The contact surface between the steel plate 1 and the concrete is increased by using multiple protrusions 3 and positioning blocks 7 on the opposite surfaces of the two steel plates 1 to enhance friction. At the same time, the contact surface between the steel plates 1 and the concrete is increased by using two positioning frames 9 on the surfaces of the multiple connecting pipes 2 to enhance the stability of the combination of the two steel plates 1 and the multiple connecting pipes 2 with the concrete.

[0023] Reference Figure 1 , Figure 6 and Figure 8As shown, the heat insulation mechanism includes a cavity 14 formed inside the inner plate 5, and a plurality of through holes 16 are formed on one side of the inner plate 5, which are connected to the cavity 14. Three expandable graphite 15 are fixedly connected inside the cavity 14, and the three expandable graphite 15 are evenly distributed inside the inner plate 5. Under the influence of high external temperature, the three expandable graphite 15 inside the inner plate 5 can expand, thereby forming double heat insulation with the heat insulation plate 4.

[0024] The working principle of this utility model is as follows: When assembling the shear wall, firstly, one end of each of the three connecting pipes 2 of the two connecting parts is inserted into one of the multiple first insertion holes 6 on one side of one of the steel plates 1. Then, the multiple first insertion holes 6 on the surface of the other steel plate 1 are inserted into the ends of the multiple connecting pipes 2. At the same time, the positioning rings 8 on both sides of the multiple connecting pipes 2 are used to support the surfaces of the two steel plates 1, thereby allowing the two steel plates 1 to be initially positioned between the two connecting parts. Meanwhile, the ends of the multiple connecting pipes 2 pass through the first insertion holes 6 between the two steel plates 1, the inner plate 5, and the heat insulation plate 4, so that the ends of the multiple connecting pipes 2 extend to the outer surfaces of the two steel plates 1. Then, align multiple protective plates 11 with the ends of the connecting pipes 2 on the outer surfaces of the two steel plates 1, and then insert multiple insert rods 12 on the side of the protective plates 11 into multiple second insert holes 10 at the ends of the connecting pipes 2, so that the protective plates 11 are aligned with the connecting pipes 2. Then, screws 13 are passed through the threaded holes at the ends of the protective plates 11 and tightened. After that, the multiple protective plates 11 are assembled and spliced ​​between the two steel plates 1 and the multiple connecting pipes 2. It is worth noting that the workers sealed the space between the two steel plates 1 with a plate and then poured concrete to gradually fill the space between the two steel plates 1. By using the positioning frames 9 on the upper and lower surfaces of multiple connecting pipes 2, combined with the multiple openings on their surfaces, the contact surface between the concrete and the multiple connecting pipes 2 is increased. At the same time, the contact surface between the concrete and the two steel plates 1 is increased by the multiple protrusions 3 and positioning blocks 7 on the two steel plates 1, thereby improving the connection stability between the concrete and the steel plates 1. Finally, the heat insulation board 4 installed inside the steel plate 1 insulates the steel plate 1. At the same time, when the surface temperature of the steel plate 1 is too high, the three expandable graphite 15 on the inner side of the inner plate 5 will expand due to heat, forming a worm-like fluffy structure, which improves the fireproof and heat insulation effect.

[0025] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fireproof steel plate concrete composite shear wall, comprising two steel plates (1) and two sets of connecting parts disposed between the two steel plates (1), characterized in that: Both of the connecting parts are composed of three connecting pipes (2), and the three connecting pipes (2) are arranged in a triangular pattern. Both of the steel plates (1) are provided with a reinforcing connecting mechanism on their outer sides. The reinforcing connection mechanism includes multiple protrusions (3) fixedly connected to the outside of the steel plate (1), and the multiple protrusions (3) are distributed in a rectangular shape on the surface of the steel plate (1). Multiple positioning blocks (7) are fixedly connected to the surface of the steel plate (1), and the cross-section of the multiple positioning blocks (7) is trapezoidal. A cavity is provided on the inner side of each of the two steel plates (1), and a heat insulation plate (4) and an inner plate (5) are provided on the inner side of each of the two cavities. Multiple first insertion holes (6) are provided between the steel plate (1), the heat insulation plate (4) and the inner plate (5). The first insertion holes (6) on the inner side of the two steel plates (1) are inserted into the two ends of the multiple connecting pipes (2). The two sides of the surface of the connecting pipes (2) are fixedly connected with positioning rings (8). The two ends of the multiple connecting pipes (2) are provided with multiple second insertion holes (10) and threaded holes. The multiple second insertion holes (10) are arranged in a ring array at the two ends of the connecting pipes (2) with the two threaded holes as the center. Both steel plates (1) are provided with heat insulation mechanisms on their inner sides.

2. The fireproof steel plate concrete composite shear wall according to claim 1, characterized in that: Each of the multiple connecting pipes (2) is provided with a positioning frame (9) on its upper and lower sides, and the surface of each of the multiple positioning frames (9) is provided with multiple openings for concrete to pass through.

3. The fireproof steel plate concrete composite shear wall according to claim 1, characterized in that: Multiple protective plates (11) are provided on the surface of both steel plates (1), and multiple insert rods (12) are fixedly connected to the sides of the multiple protective plates (11).

4. The fireproof steel plate concrete composite shear wall according to claim 3, characterized in that: Multiple insertion rods (12) are inserted into multiple second insertion holes (10) at the end of the connecting tube (2), and the protective plate (11) and the connecting tube (2) are connected by screws (13).

5. The fireproof steel plate concrete composite shear wall according to claim 1, characterized in that: The heat insulation mechanism includes a cavity two (14) opened inside the inner plate (5), and a plurality of through holes (16) are opened on one side of the inner plate (5), and the plurality of through holes (16) are connected to the cavity two (14).

6. The fireproof steel plate concrete composite shear wall according to claim 5, characterized in that: Three expandable graphite (15) are fixedly connected to the inner side of the cavity 2 (14), and the three expandable graphite (15) are evenly distributed on the inner side of the inner plate (5).

7. The fireproof steel plate concrete composite shear wall according to claim 1, characterized in that: Two steel plates (1) are symmetrically arranged at both ends of multiple connecting pipes (2), and multiple positioning blocks (7) are evenly distributed on the surface of the steel plates (1).

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