Fiber light concrete steel bar truss permanent floor support template and floor support plate

Abstract

The utility model discloses a fiber light concrete steel bar truss permanent floor support template and a floor support plate, and the floor support template is formed by binding truss steel bars and steel bar meshes through binding wires, then placing the truss steel bars and the steel bar meshes on laid alkali-resistant glass fiber gridding cloth, and finally pouring high-performance fiber light microporous concrete for gapless compounding. The floor support plate is formed by secondarily pouring reinforced concrete on the upper portion of the floor support template serving as a bottom template. The floor support template has the characteristics of light weight, high strength, heat preservation, fire prevention, sound insulation, permeability resistance, economy and attractiveness, can meet the requirement of supporting the template through a small number of supporting pieces due to the high strength and good mechanical property, can carry out rapid construction, improves the construction efficiency, reduces the construction cost, and is suitable for large-scale popularization and application. The problems that an existing common disassembly-free bottom die steel bar truss floor support plate is large in dead weight and does not insulate sound and heat are solved, floor bottom heat preservation and structure integration is achieved, and the requirements of sound insulation, heat preservation and the same service life of a main body structure are met.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a fiber light concrete steel bar truss non-disassembly floor bearing template and a floor bearing plate. Background Art

[0002] With the rapid development of prefabricated buildings in my country, the non-removal bottom form steel truss floor decking has been rapidly applied due to its safety, applicability, and convenient construction. The non-removal bottom form steel truss floor decking used in most buildings currently uses ordinary concrete because it is a structural stress layer and needs to participate in the structural stress and bear the load. However, the concrete protective layer is thick and heavy, and it is difficult to transport and install.

[0003] In order to overcome the above technical problems, the Chinese utility model patent with the authorization announcement number CN214785197U discloses a composite reinforced non-removal formwork and floor deck based on a steel truss floor deck, which includes a base bearing plate body compatible with a cement matrix, and at least one row of prefabricated holes is provided on the base bearing plate body; a connector for fixing a steel truss or a building steel structure is fixedly installed in the prefabricated hole, and the upper end of the connector extends out of the base bearing plate body; a cement mortar layer is composited on at least one of the upper and lower surfaces of the base bearing plate body; the extended end of the above connection extends out of the cement mortar layer; at least one layer of mesh cloth and / or steel wire mesh is laid between or in the cement mortar layer. The above technical solution can reduce the thickness of the base bearing plate body and improve the flexural strength of the non-removal formwork. However, this type of floor formwork still has the following defects: 1. The foundation bearing plate is composed of a layer of mortar and a layer of cement fiber board or calcium silicate board, which does not have good high performance such as sound insulation, heat insulation and high strength, and does not meet the requirements of the current development of the prefabricated industry; in addition, the two-layer composite plate is time-consuming and labor-intensive to produce, and there are problems such as loose bonding and delamination between the basic materials; 2. The truss steel bars and the plate foundation are connected with fasteners, and problems such as the connection parts falling off and loosening may occur during transportation or installation, and the steel trusses are connected with fasteners for the second time, which is time-consuming and labor-intensive, and increases costs; 3. The floor formwork adopts a hanging support method during construction, and it is necessary to borrow power from other large hanging equipment, and the construction cost is relatively high. Utility Model Content

[0004] The purpose of the utility model is to overcome the technical defects of the above-mentioned non-disassembly floor decking formwork, and to provide a permanent floor decking formwork and floor decking plate with few supports and high-performance fiber light concrete reinforced steel trusses that integrates light weight, high strength, sound insulation and thermal insulation performance, and can be factory-produced and assembled on site, so as to promote the rapid assembly construction of buildings and promote green and energy-saving buildings.

[0005] To achieve its purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a fiber lightweight concrete steel bar truss permanent floor bearing formwork, comprising a bottom mesh cloth layer, on which a steel mesh and truss steel bars bound by wire ties are arranged, wherein the mesh cloth layer, the steel mesh and the truss steel bars are compositely formed by pouring a fiber lightweight microporous concrete layer.

[0007] As a further preferred embodiment of the technical solution of the utility model, the steel mesh is a φ4@100 bidirectional steel mesh.

[0008] Preferably, the mesh cloth layer is made of alkali-resistant glass fiber mesh cloth.

[0009] The utility model provides a floor decking plate, which is formed by using the above-mentioned fiber light concrete steel bar truss permanent floor decking plate as the bottom plate and pouring steel bar concrete twice on the upper part thereof.

[0010] Preferably, when the floor decking is constructed, the floor decking formwork is supported by a small number of supporting members. After the floor decking concrete reaches the strength requirement after curing, it is only necessary to remove the supporting members, and the floor decking formwork is no longer removed. It is integrated with the floor decking concrete as a sound insulation layer to achieve the requirements of sound insulation, heat insulation and structural life. Based on the need to save costs, the number of supporting members is preferably 2-4. The supporting members include horizontal supporting channel steels, and bracket steel pipes arranged at the bottom of both ends of the horizontal supporting channel steels. The top of the bracket steel pipe is screwed to a screw rod, and the top of the screw rod is fixed to a screw rod slot, and the two ends of the horizontal supporting channel steel are placed in the screw rod slot. By adjusting the screw rod, the horizontal height of the horizontal supporting channel steel can be quickly adjusted so that the installation of the supporting members meets the construction requirements.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The high-performance fiber light concrete steel truss permanent floor formwork of the utility model is factory prefabricated. The high-performance sound insulation and heat preservation fiber light concrete used in the utility model has the characteristics of light weight and high strength, sound insulation and heat preservation, fire resistance and anti-seepage, and has good thermal performance. It is matched with steel mesh and glass fiber mesh cloth, so that the floor formwork has good mechanical properties and high rigidity. It is used as a non-disassembly bottom formwork during the pouring of floor deck construction, forming a thermal insulation and sound insulation structure at the bottom of the floor slab. The floor slab no longer needs secondary insulation, so that the cast-in-place floor slab has household thermal insulation performance, which meets the requirements of the current development of the prefabricated industry.

[0013] 2. The prefabricated high-performance fiber light concrete steel truss permanent floor formwork of the utility model is assembled on site. Due to its high strength and good mechanical properties, it can use a small number of support members to meet the formwork requirements. It is the bottom formwork during construction. After the concrete is poured on the upper floor, it is no longer removed. It is integrated with the floor concrete as an insulation layer to achieve the requirements of insulation, sound insulation and the same life as the main structure.

[0014] 3. The floor bearing formwork of the utility model is factory-produced to reduce uncontrollable factors caused by humans. The spacing between steel bars and the thickness of the concrete protective layer are effectively controlled to maximize compliance with the design requirements. In addition, the high degree of assembly reduces most of the steel bar binding and scaffolding erection work, reduces the time for transporting a large amount of materials on site, and saves labor, materials, machinery, and management costs.

[0015] 4. The floor bearing formwork of the utility model is cast in one time using fiber lightweight microporous concrete, with high compressive strength, good plate flatness, one-time successful production, and high production efficiency. It overcomes the problems of the floor bearing formwork in patent CN214785197U using two layers of composite plates, which is time-consuming and labor-intensive to produce, and there are problems such as weak bonding and delamination between the base materials, and loose fasteners. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the building support template of the utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view of

[0018] Figure 3 This is a schematic diagram of the construction and installation of the floor support formwork of the utility model;

[0019] Figure 4 This is a schematic diagram of the composition and formwork of the support components of the floor deck template of the utility model;

[0020] Figure numerals: 1. Floor formwork; 2. Fiber lightweight concrete; 3. Steel mesh; 4. Mesh cloth layer; 5. Truss steel bars; 6. Support members: 6-1. Horizontal support channel steel, 6-2. Support steel pipe, 6-3. Screw rod, 6-4. Screw rod slot. DETAILED DESCRIPTION

[0021] The structure and construction process of the fiber light concrete steel bar truss permanent floor decking formwork and floor decking plate of the utility model are described in detail below with reference to the accompanying drawings.

[0022] Reference Figure 1-3 The utility model provides a fiber lightweight concrete steel truss permanent floor bearing formwork, including a bottom mesh cloth layer 4, on which a steel mesh 3 and truss steel bars 5 tied by wire are provided, wherein the mesh cloth layer 4, the steel mesh 3 and the truss steel bars 5 are seamlessly composited by pouring a fiber lightweight microporous concrete layer 2 to form the floor bearing formwork 1.

[0023] Specifically, the steel mesh 3 is a φ4@100 bidirectional steel mesh. The mesh cloth layer 4 is made of alkali-resistant glass fiber mesh cloth.

[0024] The utility model provides a floor decking plate, which takes the above-mentioned fiber light concrete steel bar truss permanent floor decking template as the bottom template and is formed by pouring reinforced concrete twice on the upper part thereof.

[0025] During the construction of the floor decking, the bottom of the floor decking template 1 is supported by 2-4 supporting members 6. After the concrete of the floor decking reaches the strength requirement after curing, the supporting members 6 can be removed.

[0026] Specifically, the support member 6 includes a horizontal support channel steel 6-1, and a support steel pipe 6-2 arranged at the bottom of both ends of the horizontal support channel steel 6-1, the top of the support steel pipe 6-2 is screwed to a screw rod 6-3, the top of the screw rod 6-3 is fixed to a screw rod slot 6-4, and both ends of the horizontal support channel steel 6-1 are placed in the screw rod slot 6-4. By adjusting the screw rod 6-3, the horizontal height of the horizontal support channel steel 6-1 can be quickly adjusted, so that the installation of the support member 6 meets the construction requirements.

[0027] Specifically, the raw materials and mass proportions of the fiber lightweight concrete are: 280-560 kg / m³ of aluminum-silicon-based low shrinkage fast-hardening cement; 70-140 kg / m³ of ordinary silicate cement; 150-220 kg / m³ of mineral admixtures; 20 kg / m³ of expanded perlite; 3-5 kg / m³ of foaming stabilizer; 2-5 kg / m³ of glass fiber, polypropylene fiber and basalt fiber; and 1.5 kg / m³ of water reducer. The above raw materials can all be obtained from commercial channels. It uses fast-hardening low-shrinkage cement as gelling material, mineral admixtures and expanded perlite as aggregates, a variety of fibers with different elastic moduli as reinforcing materials, foaming stabilizers and water reducers as functional regulating materials, and adopts compressed air foaming technology to introduce tiny closed pores with a diameter of less than 1mm into the base cement (ordinary silicate cement). It has a water-cement ratio of 0.50-0.65 and a slurry bulk density of 900-1200kg / m³, which is used to constitute the structural layer of the product of the utility model. The fiber lightweight concrete itself has the characteristics of thermal insulation, light weight and high strength, and meets the current energy-saving standards for floor decking.

[0028] During the construction of the floor bearing formwork of the utility model, the truss steel bars 5 are first tied together with the φ4@100 bidirectional steel mesh by tying wire, and then placed on a production line paved with alkali-resistant glass fiber mesh cloth. The alkali-resistant glass fiber mesh cloth, the tied φ4@100 bidirectional steel mesh cloth and the truss steel bars 5 are integrally compounded together by pouring the above-mentioned sound insulation and heat preservation fiber lightweight microporous concrete to form a high-performance concrete reinforced truss permanent floor bearing formwork structure reinforced with wire mesh, truss steel bars and glass fiber mesh cloth, wherein the floor bearing formwork 1 is used as a permanent, non-dismantling bottom formwork with sound insulation and heat preservation functions for cast-in-place concrete floor slabs. Due to its lightweight and high-strength characteristics, only a small number of supporting members 6 are needed to meet the requirements of floor bearing formwork. After the formwork is completed, reinforced concrete is poured for a second time. After the concrete is cured to meet the strength requirements, only a small number of supporting members 6 need to be removed, and the floor bearing formwork 1 is no longer removed, and is integrated with the floor slab concrete as a sound insulation and heat preservation layer to meet the requirements of sound insulation, heat preservation and structural life.

[0029] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical solution and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fiber light concrete steel truss permanent floor formwork, characterized in that: It comprises a bottom mesh cloth layer (4), on which a steel mesh sheet (3) and truss steel bars (5) are arranged, which are bound by wire ties, wherein the mesh cloth layer (4), the steel mesh sheet (3) and the truss steel bars (5) are composited by pouring a fiber lightweight microporous concrete layer (2) onto the mesh cloth layer (4), the steel mesh sheet (3) and the truss steel bars (5) to form the floor bearing formwork (1).

2. A fiber light concrete steel truss permanent floor formwork according to claim 1, characterized in that: The steel mesh (3) is a φ4@100 bidirectional steel mesh.

3. A fiber light concrete steel truss permanent floor formwork according to claim 1, characterized in that: The mesh cloth layer (4) is made of alkali-resistant glass fiber mesh cloth.

4. A floor deck, characterized in that: The permanent floor-bearing formwork of the fiber light concrete reinforced truss described in any one of claims 1 to 3 is used as the bottom formwork, and reinforced concrete is poured twice on the upper part thereof.

5. A floor decking plate according to claim 4, characterized in that: When the floor decking slab is being constructed, the bottom of the floor decking template (1) is supported by a support member (6). After the concrete of the floor decking slab has been cured to reach the strength requirement, the support member (6) is removed.

6. A floor decking plate according to claim 5, characterized in that: The number of the supporting members (6) is 2-4.

7. A floor deck according to claim 5, characterized in that: The support member (6) comprises a horizontal support channel steel (6-1), and support steel pipes (6-2) arranged at the bottom of both ends of the horizontal support channel steel (6-1), the top of the support steel pipe (6-2) is threadedly connected to a screw rod (6-3), the top of the screw rod (6-3) is fixedly connected to a screw rod slot (6-4), and both ends of the horizontal support channel steel (6-1) are placed in the screw rod slot (6-4).

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