High-temperature-resistant steel plate group composite floor

Abstract

The utility model discloses a high-temperature-resistant steel plate group composite floor, which relates to the technical field of composite floors and comprises a profiled steel plate, a plurality of positioning grooves are arranged at the top of the profiled steel plate, positioning plates are arranged in the positioning grooves, longitudinal steel bars are arranged on two sides of the top of each positioning plate, and a concrete layer is arranged at the top of the profiled steel plate. According to the utility model, through the cooperation of the fixing plate, the connecting rods, the longitudinal steel bars, the transverse steel bars, the heat insulation layer and the fireproof coating, the device can insulate heat in a high-temperature environment during use, so that concrete is prevented from cracking in an overhigh-temperature environment; and when the concrete is fixed, the connection with the concrete can be increased, the concrete and the floor slab are prevented from large-block separation, and the problem that the steel plate and the concrete layer are prone to large-block separation after the composite floor slab expands with heat and contracts with cold due to temperature change under high-temperature exposure or rain wash is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite floor slabs, and more specifically to a high-temperature resistant steel plate composite floor slab. Background Art

[0002] Corrugated steel sheet is a thin steel sheet formed by cold pressing or cold rolling. It is widely used in steel structure buildings due to its light weight, easy construction and simple connection with steel frame beams. In particular, corrugated steel sheet and concrete composite floor slabs are widely used as structural floor slabs.

[0003] The corrugated steel plate concrete composite floor is formed by laying a concrete layer directly on the corrugated steel plate. The concrete layer and the corrugated steel plate are directly adhered together. The corrugated steel plate concrete composite floor exposed on the roof will also be affected by rain erosion and high temperature exposure. The corrugated steel plate will expand and contract due to temperature changes. Over time, the corrugated steel plate and the concrete layer will easily separate.

[0004] A corrugated steel plate concrete composite floor slab is disclosed in the Chinese utility model patent application number: CN202021707749.7, comprising a corrugated steel plate, a concrete layer and a reinforcement device, wherein the reinforcement device is arranged on the upper surface of the corrugated steel plate, and the concrete layer is laid on the upper surface of the corrugated steel plate. The corrugated steel plate concrete composite floor slab has the effect of enhancing the bonding strength between the concrete layer and the corrugated steel plate of the corrugated steel plate concrete composite floor slab, but the device needs to be fastened and fixed with multiple bolts during installation, which is time-consuming, and most of the fixing is done by bolts, and the connectivity is relatively insufficient after long-term use.

[0005] Therefore, it is necessary to propose a high temperature resistant steel plate composite floor to solve the above problems. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] The purpose of the utility model is to solve the problem that when a composite floor is exposed to high temperature or rain, the steel plate and the concrete layer are easily separated in large pieces due to thermal expansion and contraction caused by temperature changes, and the composite floor requires a large number of fixing bolts during installation, resulting in a long installation time and the connectivity will be reduced after long-term use if it is only fixed by bolts and welding at some points. The utility model provides a high-temperature resistant steel plate composite floor.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0010] A high temperature resistant steel plate composite floor comprises a corrugated steel plate, a plurality of positioning grooves are opened on the top of the corrugated steel plate, positioning plates are arranged inside the positioning grooves, longitudinal steel bars are arranged on both sides of the top of the positioning plates, and a concrete layer is arranged on the top of the corrugated steel plate.

[0011] Furthermore, a fixing plate is fixedly connected to the top of the positioning plate, and a plurality of connecting rods are fixedly connected to the side of the fixing plate, and the connectivity between the concrete can be increased through the connecting rods.

[0012] Furthermore, threaded holes are provided at both ends of the longitudinal steel bars and are threadedly connected with bolts, and threaded holes matching the bolts are provided inside the corrugated steel plate, so that the longitudinal steel bars can be fixed by the bolts.

[0013] Furthermore, a limiting groove is provided inside the fixing plate, and a transverse reinforcement is provided inside the limiting groove, so that the mounting plate can be limited by a limiting box.

[0014] Furthermore, a plurality of limit blocks are fixedly connected to the top of the corrugated steel plate, and through holes matching the transverse steel bars are provided inside the limit blocks, so that the transverse steel bars can be fixed and limited.

[0015] Furthermore, a heat insulating layer is fixedly connected to the bottom of the corrugated steel plate, a fire retardant coating is provided at the bottom of the heat insulating layer, and glass fiber is provided inside the heat insulating layer. The heat insulating layer and the fire retardant coating can protect the device from high temperatures.

[0016] (III) Beneficial effects

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. The utility model can insulate the high temperature environment when in use through the coordination among the fixing plate, the connecting rod, the longitudinal steel bar, the transverse steel bar, the heat insulation layer and the fire retardant coating, so as to prevent the concrete from cracking in the environment with too high temperature, and can increase the connection with the concrete when fixing the concrete, so as to prevent the concrete from separating from the floor slab in large pieces, and effectively solve the problem that the steel plate and the concrete layer are easily separated in large pieces after the composite floor slab is exposed to high temperature or washed by rain due to thermal expansion and contraction caused by temperature changes.

[0019] 2. The utility model, through the coordination among the positioning groove, the positioning plate, the bolts, the limit groove and the limit block, can make the device only need to place the positioning plate inside the positioning groove and fix a small number of bolts and then weld some steel bars to complete the assembly of the floor slab during installation, thus effectively solving the problem that a large number of fixing bolts are required during the installation of the composite floor slab, resulting in a long installation time and the connectivity will be reduced after long-term use when only fixed by bolts and welding at some points. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic axial view of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the upward axis view of the structure of the utility model;

[0022] Figure 3 It is a side axis schematic diagram of the structure of the utility model;

[0023] Figure 4 The utility model structure Figure 1 An enlarged schematic diagram of point A.

[0024] Figure numerals: 1. corrugated steel plate; 2. positioning groove; 3. positioning plate; 4. fixing plate; 5. connecting rod; 6. longitudinal reinforcement; 7. bolt; 8. limiting groove; 9. transverse reinforcement; 10. limiting block; 11. insulation layer; 12. fire retardant coating; 13. concrete layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] See also Figure 1-2 A high-temperature resistant steel plate composite floor comprises a corrugated steel plate 1, a plurality of positioning grooves 2 are provided on the top of the corrugated steel plate 1, a positioning plate 3 is provided inside the positioning groove 2, longitudinal steel bars 6 are provided on both sides of the top of the positioning plate 3, a concrete layer 13 is provided on the top of the corrugated steel plate 1, a fixing plate 4 is fixedly connected to the top of the positioning plate 3, a plurality of connecting rods 5 are fixedly connected to the side of the fixing plate 4, a heat insulation layer 11 is fixedly connected to the bottom of the corrugated steel plate 1, a fire retardant coating 12 is provided at the bottom of the heat insulation layer 11, and glass fiber is provided inside the heat insulation layer 11.

[0028] In this embodiment, through the coordination among the fixing plate 4, the connecting rod 5, the longitudinal steel bars 6, the transverse steel bars 9, the insulation layer 11 and the fire retardant coating 12, the device can insulate the high temperature environment when in use to prevent the concrete from cracking in an environment with too high a temperature, and can increase the connection with the concrete when fixing the concrete to prevent the concrete from separating in large pieces from the floor slab, thereby effectively solving the problem that the steel plate and the concrete layer 13 are easily separated in large pieces after the composite floor slab is exposed to high temperature or rain erosion due to thermal expansion and contraction caused by temperature changes.

[0029] Example 2

[0030] See also Figure 3-4 This embodiment is further optimized on the basis of embodiment 1. Specifically, threaded holes are provided at both ends of the longitudinal steel bars 6 and are threadedly connected with bolts 7. Threaded holes compatible with the bolts 7 are provided inside the corrugated steel plate 1. A limiting groove 8 is provided inside the fixing plate 4. Transverse steel bars 9 are provided inside the limiting groove 8. A plurality of limiting blocks 10 are fixedly connected to the top of the corrugated steel plate 1. Through holes compatible with the transverse steel bars 9 are provided inside the limiting blocks 10.

[0031] In this embodiment, the positioning plate 3 is placed inside the positioning groove 2, and then the longitudinal steel bar 6 is placed on the top of the positioning plate 3 and connected to the corrugated steel plate 1 by bolts 7, and then the transverse steel bar 9 passes through multiple limit blocks 10 and is located inside the limit groove 8, and then the connection between the transverse steel bar 9 and the limit block 10 is welded, which effectively solves the problem that a large number of fixing bolts 7 are required during the installation of the composite floor, resulting in a long installation time and the connectivity will be reduced after long-term use if it is only fixed by bolts 7 and welding at some points.

[0032] Working principle: When in use, place the positioning plate 3 inside the positioning groove 2, and then place the longitudinal steel bar 6 on the top of the positioning plate 3 and connect the longitudinal steel bar 6 to the corrugated steel plate 1 through bolts 7, and then pass the transverse steel bar 9 through multiple limit blocks 10 and be located inside the limit groove 8, and then weld the connection between the transverse steel bar 9 and the limit block 10, and then the concrete layer 13 can be poured on the corrugated steel plate 1.

[0033] In summary: the utility model, through the cooperation among the fixing plate 4, the connecting rod 5, the longitudinal steel bar 6, the transverse steel bar 9, the heat insulation layer 11 and the fire retardant coating 12, can make the device insulate the high temperature environment when in use to avoid the concrete from cracking in the environment with too high temperature, and can increase the connection with the concrete when fixing the concrete to avoid the large separation of the concrete and the floor slab, effectively solving the problem that the steel plate and the concrete layer 13 are easily separated in large pieces after the composite floor slab is exposed to high temperature or rain erosion due to thermal expansion and contraction caused by temperature changes, and through the cooperation among the positioning groove 2, the positioning plate 3, the bolt 7, the limit groove 8 and the limit block 10, the device only needs to place the positioning plate 3 inside the positioning groove 2 and fix a small number of bolts 7 and then weld some steel bars to complete the assembly of the floor slab during installation, effectively solving the problem that the large number of fixing bolts 7 required for the installation of the composite floor slab leads to a long installation time and the connectivity is reduced after long-term use only by bolts 7 and welding of some points.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high temperature resistant steel plate composite floor, comprising a corrugated steel plate (1), characterized in that: The top of the corrugated steel plate (1) is provided with a plurality of positioning grooves (2), the interior of the positioning grooves (2) is provided with positioning plates (3), both sides of the top of the positioning plates (3) are provided with longitudinal steel bars (6), and the top of the corrugated steel plate (1) is provided with a concrete layer (13).

2. The high temperature resistant steel plate composite floor according to claim 1, characterized in that: The top of the positioning plate (3) is fixedly connected to a fixing plate (4), and the side of the fixing plate (4) is fixedly connected to a plurality of connecting rods (5).

3. The high temperature resistant steel plate composite floor according to claim 2, characterized in that: Both ends of the longitudinal steel bar (6) are provided with threaded holes and are threadedly connected with bolts (7), and the interior of the corrugated steel plate (1) is provided with threaded holes that are compatible with the bolts (7).

4. The high temperature resistant steel plate composite floor according to claim 3, characterized in that: A limiting groove (8) is provided inside the fixing plate (4), and a transverse steel bar (9) is provided inside the limiting groove (8).

5. The high temperature resistant steel plate composite floor according to claim 4, characterized in that: A plurality of limit blocks (10) are fixedly connected to the top of the corrugated steel plate (1), and through holes matching the transverse steel bars (9) are provided inside the limit blocks (10).

6. The high temperature resistant steel plate composite floor according to claim 1, characterized in that: A heat insulation layer (11) is fixedly connected to the bottom of the corrugated steel plate (1), a fire retardant coating (12) is provided at the bottom of the heat insulation layer (11), and glass fibers are provided inside the heat insulation layer (11).

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