A prefabricated steel structure cast-in-place grid self-insulating wall and its construction method

Abstract

The present invention discloses an assembled steel structure cast-in-place grid self-insulating wall, comprising an insulation board and a fixed connecting piece, wherein the fixed connecting piece comprises a fixed pull rod and a support piece, wherein the fixed pull rod passes through the support piece and the insulation board; the support piece comprises a fixed plate and a limiting side plate, wherein the limiting side plate is provided with a limiting hole, and the fixed plate is provided with a limiting hook matched with the limiting hole, wherein the fixed plate and the limiting side plate are fixedly connected through the limiting hole and the limiting hook, and the steel wires of the steel wire mesh are clamped and fixed; steel wire meshes are arranged on both sides of the insulation board, and the steel wire meshes on both sides are connected through oblique insertion wires to form a steel wire grid, and concrete is poured in the baffles on both sides of the insulation board; the technical effect brought about by the present invention is that the structure and construction method of the present invention have high construction efficiency and are easy to install, and also ensure that the strength, waterproofness and fireproof performance of the wall after the construction is completed meet the relevant standard requirements.

Description

Technical Field

[0001] The invention relates to the field of prefabricated steel structure building insulation wall structures, and in particular to a prefabricated steel structure cast-in-place grid self-insulating wall and a construction method thereof. Background Art

[0002] At present, more and more prefabricated structures are used for construction in the field of modern construction. The promotion of prefabricated buildings has greatly improved construction efficiency; especially in some office and commercial buildings, steel structures are used for assembly. Among the prefabricated steel structure building components, the setting of insulation walls is particularly important. The quality of its assembly directly determines the construction quality of the overall building, and directly affects the building's insulation, strength, fire resistance, waterproofing and other performance indicators. It is an indispensable part of modern green buildings.

[0003] For steel structure prefabricated buildings, since the main load-bearing body is borne by the beams and columns of the steel structure, the walls generally do not have very high load-bearing requirements. Generally, the filling wall structure in traditional buildings is adopted, that is, the insulation board structure of the non-load-bearing wall part of the traditional building. However, for steel structure buildings, a series of key issues such as how to assemble, which accessories need to be prefabricated, which need to be constructed on-site, and how to fix them to the steel structure frame are particularly important. This is related to the green energy-saving indicators of the overall building's strength, waterproofness, and insulation. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an assembled steel structure cast-in-place grid self-insulating wall and a construction method thereof, which fully considers factors such as insulation, strength, load-bearing, waterproofing and fire prevention of steel structure buildings, facilitates on-site construction and installation, and greatly improves the thermal insulation properties of the wall panels, especially the tensile strength.

[0005] The technical solution adopted by the present invention is as follows: an assembled steel structure cast-in-place grid self-insulating wall, comprising an insulation board and a fixed connecting piece, the fixed connecting piece comprising a fixed pull rod and a support piece, the fixed pull rod passing through the support piece and the insulation board; the support piece comprises a fixed plate and a limiting side plate, the limiting side plate is provided with a limiting hole, the fixed plate is provided with a limiting hook matched with the limiting hole, the fixed plate and the limiting side plate are fixedly connected through the limiting hole and the limiting hook, and the steel wire of the steel wire mesh is clamped and fixed; steel wire meshes are arranged on both sides of the insulation board, the steel wire meshes on both sides are connected by oblique wire insertion to form a steel wire grid, and concrete is poured in the baffles on both sides of the insulation board;

[0006] Outer thick steel bars are tied to the steel wire mesh on the outer side of the insulation board, fixed installation feet are arranged on the steel structure on the inner side of the insulation board, and fixed installation rods are arranged at the cross intersections of the outer thick steel bars, one end of the fixed installation rod supports the cross intersection of the thick steel bars, and the other end passes through the insulation board and is fixedly connected to the fixed installation feet on the inner side of the insulation board, so as to fix the thick steel bars on the outer side of the insulation board;

[0007] The technical effect brought by the present invention is that the structure and construction method of the present invention have high construction efficiency and are easy to install, and ensure that the strength, waterproofness and fire resistance of the wall after construction meet the relevant standard requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 Shown is a schematic diagram of the overall structure of the present invention;

[0009] Figure 2 The figure shows a schematic diagram of the steel wire mesh binding thick steel bars and fixing the tie rod installation structure of the present invention;

[0010] like Figure 3 and Figure 4 Shown is a structural diagram of another embodiment of the fixed pull-connector of the present invention;

[0011] In the figure, 1. steel structure, 2. insulation board, 3. fixed connecting piece, 4. fixed mounting foot, 5. fixed mounting rod, 6. steel wire mesh, 7. inner thick steel bar, 8. baffle, 9. support plate, 10. outer thick steel bar, 11. fixed pulling rod, 12. fixed plate, 13. limiting side plate, 14. waterproof board, 15. limiting hook, 16. limiting hole. DETAILED DESCRIPTION

[0012] The technical solution is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0013] As shown in the figure, an assembled steel structure cast-in-place grid self-insulating wall comprises an insulation board 2 and a fixed connecting piece 3, wherein the fixed connecting piece 3 comprises a fixed tie rod 11 and a support, wherein the fixed tie rod 11 passes through the support and the insulation board 2; the support comprises a fixed plate 12 and a limiting side plate 13, wherein the limiting side plate 13 is provided with a limiting hole 16, wherein the fixed plate 12 is provided with a limiting hook 15 matched with the limiting hole 16, wherein the fixed plate 12 is fixedly connected with the limiting side plate 13 through the limiting hole 16 and the limiting hook 15, and the steel wire of the steel wire mesh 6 is clamped and fixed; steel wire mesh 6 is arranged on both sides of the insulation board 2, and the steel wire meshes on both sides are connected by oblique wire insertion to form a steel wire grid, and concrete is poured in the baffles 8 on both sides of the insulation board 2;

[0014] An outer coarse steel bar 10 is tied to the steel mesh 6 located on the outer side of the insulation board 2, a fixed installation foot 4 is arranged on the steel structure 1 located on the inner side of the insulation board 2, and a fixed installation rod 5 is arranged at the cross intersection of the outer coarse steel bars 10, one end of the fixed installation rod 5 supports the cross intersection of the coarse steel bars, and the other end passes through the insulation board 2 and is fixedly connected to the fixed installation foot 4 on the inner side of the insulation board, so as to fix the coarse steel bars on the outer side of the insulation board;

[0015] The outer thick steel bars 10 tied to the steel wire mesh 6 include transverse thick steel bars and vertical thick steel bars. The transverse thick steel bars are connected in sequence from end to end in the circumferential direction of the entire building and surround the building; the vertical thick steel bars are connected in sequence from end to end in the vertical direction of the entire building and run through the entire height of the building.

[0016] Both ends of the inner thick steel bars 7 tied to the steel wire mesh 6 are directly fixed to the steel structure 1;

[0017] A support plate 9 is arranged outside the steel structure 1 to support and fix the wall structure, and the insulation plate extends upward to the lower side of the support plate to surround the steel structure to enhance the insulation effect;

[0018] A waterproof plate 14 is also provided outside the fixing plate 12, and the waterproof plate 14 is also fixedly connected to the fixing plate 12 through a limiting hole 16 and a limiting hook 15, and is used to cover and hide the end of the fixing rod, reduce heat transfer and improve the waterproof effect of the wall;

[0019] The fixing plate 12 and the limiting side plate 13 are also provided with grooves for accommodating the steel wire, so as to clamp and fix the entire support member and the steel wire;

[0020] Waterproof plates are arranged at both ends of the fixed tie rod 11. On the one hand, they can play a waterproof role after the entire wall construction is completed to prevent water seepage around the two ends of the fixed tie rod; on the other hand, they can play a role in blocking heat transfer. The fixed tie rod is generally made of metal, especially threaded steel bars. If its two ends are directly exposed or close to both sides of the wall, heat transfer will inevitably occur, resulting in a reduction in the thermal insulation effect of the wall. In this way, the waterproof plate generally made of plastic products can play a good role in blocking heat transfer.

[0021] As mentioned above, the fixed tie rod 11 preferably adopts threaded steel bars. On the one hand, it enables the limiting side plate to better fix the position. On the other hand, it forms a stronger pulling connection force between the fixed tie rod and the wall after the wall is cast or filled with mortar, forming a stronger pulling connection strength, thereby improving the structural strength of the entire wall.

[0022] The fixed pull rod 11 can adopt at least two structural forms, one is a single-rod structure, nuts can be set at both ends for fixing and limiting; the other is a U-shaped structure, and a nut can also be set at one end. No matter which one is adopted, threaded steel bars can be used preferentially. Of course, according to the development of science and technology, other materials or structural forms with better pulling force and lower cost can be selected.

[0023] The designs of each group of limiting hooks 15 and limiting holes 16 need to adapt to each other to ensure that the limiting hooks are smoothly inserted into the limiting holes and fixed. The design of their size and position relationship can be adjusted and applied according to actual conditions.

[0024] A through hole is arranged on the support member, and the diameter of the through hole is adapted to the diameter of the fixed pull rod, so as to achieve the preferred effect that the fixed pull rod can just pass through and maintain a certain friction force.

[0025] The fixed mounting rod 5 is located at one end of the outer side of the insulation board 2 and is provided with a bent portion or a nut to facilitate fixing and supporting the thick steel bar frame structure. The fixing method of the fixed mounting rod and the fixed mounting foot is preferably bolt fixing;

[0026] The fixed mounting feet are evenly welded or screwed to the main body of the steel beam or steel column of the steel structure.

[0027] A construction method for a prefabricated steel structure cast-in-place self-insulating wall is:

[0028] (1) Prefabricate the insulation board 2 and install the steel wire mesh 6 and the oblique wires to form a steel wire grid;

[0029] (2) hoisting the insulation board with the steel wire mesh frame between the beams and columns of the steel structure 1 building and placing it on the support plate 9;

[0030] (3) Install the support member on the steel mesh 6 on both sides of the insulation board 2, ensuring that at least one steel wire is placed in the support member, and then pass the fixed pull rod 11 through the support member and the insulation board in sequence to clamp the insulation board and the steel mesh in a fixed position; and install nuts or waterproof caps and waterproof boards;

[0031] (4) A fixed mounting foot 4 is provided on the steel structure at the inner side of the insulation board;

[0032] (5) Tie the outer thick steel bars 10 on the outer side of the insulation board and fix them on the wire mesh;

[0033] (6) The fixed installation rod 5 passes through the insulation board at one end to support the thick steel frame outside the insulation board, and the other end passes through the insulation board and is fixedly connected to the fixed installation foot 4;

[0034] (7) Tie the inner thick steel bars 7 to the steel wire mesh inside the insulation board, and fix the two ends of the inner thick steel bars directly to the steel frame;

[0035] (8) Concrete is poured on both sides of the insulation board. One side is directly poured after supporting the baffle 8. Since the other side is located between the steel structure beams and columns, a pouring hole can be opened on the steel structure for pouring, or a pouring hole can be opened on the baffle after supporting the baffle for on-site pouring. After the pouring is completed, the baffle is removed and the incomplete pouring is manually filled with concrete to form a complete wall.

[0036] Self-insulating walls can be installed on steel structure frames in fully external, semi-external or fully internal ways. Fully external means that the wall is not in contact with the steel structure; semi-external means that part of the wall is located inside the steel structure frame; and fully internal means that the entire wall is located inside the steel structure frame.

[0037] The above-mentioned semi-prefabricated and semi-on-site cast-in-place construction method can effectively solve the transportation problem of prefabricated parts and the problem that prefabricated parts are not suitable for on-site cutting. On-site casting can be well coordinated with steel structure beams and columns and fixed installation feet, which significantly improves the construction efficiency and the overall performance of the wall after construction.

[0038] For the binding of the coarse steel bars, preferably, the coarse steel bars are crisscrossed and evenly bound and fixed on the wire mesh on both sides of the insulation board. At the same time, the binding density, that is, the interval, on both sides of the insulation board can be different according to the actual needs of the building.

[0039] It is easy to understand that this embodiment is only a part of the present invention. Other embodiments obtained by those skilled in the art without making any creative work, as well as various changes and modifications made without departing from the spirit and scope of the present invention, should all fall within the protection scope of the present invention.

[0040] The techniques, shapes, and structural parts not described in detail in the present invention are all well-known techniques.

Claims

1. An assembled steel structure cast-in-place grid self-insulating wall, characterized in that: It comprises an insulation board and a fixed connecting piece, the fixed connecting piece comprises a fixed pull rod and a support piece, the fixed pull rod passes through the support piece and the insulation board; the support piece comprises a fixed plate and a limiting side plate, the limiting side plate is provided with a limiting hole, the fixed plate is provided with a limiting hook matched with the limiting hole, the fixed plate and the limiting side plate are fixedly connected through the limiting hole and the limiting hook, and the steel wire of the steel wire mesh is clamped and fixed; steel wire meshes are arranged on both sides of the insulation board, the steel wire meshes on both sides are connected by oblique wires to form a steel wire grid, and concrete is poured in the baffles on both sides of the insulation board; Outer thick steel bars are tied to the steel wire mesh on the outer side of the insulation board, fixed installation feet are arranged on the steel structure on the inner side of the insulation board, and fixed installation rods are arranged at the cross intersections of the outer thick steel bars, one end of the fixed installation rod supports the cross intersection of the thick steel bars, and the other end passes through the insulation board and is fixedly connected to the fixed installation feet on the inner side of the insulation board, so as to fix the thick steel bars on the outer side of the insulation board; A waterproof plate is also arranged outside the fixing plate, and the waterproof plate is fixedly connected to the fixing plate via a limiting hole and a limiting hook; Both ends of the inner thick steel bars tied to the steel wire mesh are directly fixed to the steel structure; The fixed mounting feet are evenly welded or screwed to the main body of the steel beam or steel column of the steel structure.

2. The assembled steel structure cast-in-place grid self-insulating wall according to claim 1, characterized in that: The outer thick steel bars tied on the wire mesh include transverse thick steel bars and vertical thick steel bars. The transverse thick steel bars are connected in sequence end to end in the overall circumference of the building and surround the building; the vertical thick steel bars are connected in sequence end to end in the overall up and down direction of the building and run through the entire height of the building.

3. The assembled steel structure cast-in-place grid self-insulating wall according to claim 1, characterized in that: A support plate is arranged outside the steel structure to support and fix the wall structure. The insulation plate extends upward to the lower side of the support plate to surround the steel structure and enhance the insulation effect.

4. The assembled steel structure cast-in-place grid self-insulating wall according to claim 1, characterized in that: The fixing plate and the limiting side plate are also provided with grooves which cooperate with each other and are used to accommodate the steel wire.

5. The construction method of the assembled steel structure cast-in-place grid self-insulating wall according to any one of claims 1 to 4, characterized in that: The specific steps are: (1) Prefabricate the insulation board and install the steel wire mesh and oblique wires to form a steel wire grid; (2) Hoist the insulation board with wire mesh frame between the beams and columns of the steel structure building and place it on the support plate; (3) Install the support members on the steel mesh on both sides of the insulation board, ensuring that at least one steel wire is placed in the support members, and then pass the fixing rods through the support members and the insulation board in sequence to clamp the insulation board and the steel mesh in a fixed position; and install nuts or waterproof caps and waterproof boards; (4) A fixed mounting foot is provided on the steel structure at the inner side of the insulation board; (5) Tie the outer thick steel bars on the outside of the insulation board and fix them on the wire mesh; (6) Pass the fixed installation rod through one end of the insulation board to support the thick steel frame outside the insulation board, and pass the other end through the insulation board to be fixedly connected to the fixed installation foot; (7) Tie the inner thick steel bars to the steel wire mesh inside the insulation board, and fix the two ends of the inner thick steel bars directly to the steel frame; (8) Concrete is poured on both sides of the insulation board. One side is directly poured after supporting the baffle, and the other side is poured by opening a pouring hole on the steel structure or opening a pouring hole on the baffle after supporting the baffle for on-site pouring. After pouring is completed, the baffle is removed and the incomplete pouring is manually filled with concrete to form a complete wall.

6. The construction method of the assembled steel structure cast-in-place grid self-insulating wall according to claim 5, characterized in that: The thick steel bars are crisscrossed and evenly tied and fixed to the steel mesh on both sides of the insulation board.

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