A hollow thermal concrete wall construction

Abstract

The utility model belongs to the field of building engineering structure construction technology, concretely relates to a kind of hollow heat-insulating concrete wall building structure, including reinforcing mesh, hollow tube, isolation board and concrete layer, reinforcing mesh is provided with two layers with interval, and several hollow tubes are provided side by side between two reinforcing meshes, and concrete layer is formed by cast-in-situ concrete between hollow tube and reinforcing mesh outer side, reinforcing mesh extends to main structure, and isolation board of flexible material is arranged between concrete layer periphery and main structure, isolation board is connected with reinforcing mesh, and several pipe caps are fixedly arranged side by side on bottom isolation board, the lower end of each hollow tube is connected with each pipe cap on bottom isolation board, the upper end of hollow tube is also provided with pipe cap, and each hollow tube is fixedly connected between reinforcing mesh on both sides by fixed clamp.In the bottom isolation board, the lower end of the hollow tube is connected with the pipe cap, and the installation of the hollow tube is positioned by the bottom isolation board, the hollow tube is quickly installed, and the construction period is saved.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering structure construction technology, specifically relating to a hollow insulated concrete wall construction structure. Background Technology

[0002] With the development of the social economy and the improvement of living standards, people's requirements for living environment and housing quality continue to increase, and high-quality housing has become the main trend in housing construction.

[0003] In residential construction, walls are a core component, and their construction efficiency and overall performance directly affect project quality and construction cycle. Currently, prefabricated walls such as ALC wall panels are widely used due to their high installation efficiency and simple construction process, but they suffer from relatively high overall costs. Autoclaved aerated concrete (AAC) block walls, on the other hand, are often used for interior partition walls due to their economic advantages and adaptability to various shapes. However, their construction process has the following significant technical drawbacks: the need for supporting structural columns, complex masonry techniques leading to extended construction cycles, and improper operation control that can easily cause settlement cracks and water seepage at the wall base, severely impacting wall durability and performance. To adapt to the high-turnover, high-interval construction pace of building projects, it is urgent to optimize the construction process of AAC block walls, achieving simultaneous construction with the main structure and realizing the technical goals of shortening the construction period and eliminating the need for plastering.

[0004] Chinese utility model patent application number 202323289977.3 discloses a novel hollow reinforced concrete partition wall, comprising a hollow wall body and a concrete layer. The hollow wall body includes a crack-resistant steel mesh and PVC hollow tubes. The crack-resistant steel mesh is arranged in two layers, with multiple PVC hollow tubes arranged between the two layers of crack-resistant steel mesh. Each PVC hollow tube is tied and fixed to the crack-resistant steel mesh. A concrete layer is poured between the crack-resistant steel mesh and the PVC hollow tubes, as well as outside the crack-resistant steel mesh. This novel hollow reinforced concrete partition wall can realize the simultaneous installation of secondary structural components during the main structure construction stage, improving construction efficiency. It also has the advantages of low self-weight load, sound insulation and absorption, thermal insulation, and crack resistance. However, it has key technical defects: the PVC hollow tubes lack a rapid positioning mechanism, resulting in low installation and positioning efficiency; and the tying method for fixing makes them susceptible to displacement due to concrete impact during pouring, affecting structural stability and construction quality. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a hollow thermal insulation concrete wall construction structure that can quickly position and install hollow tubes, saving construction time.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a hollow insulated concrete wall construction structure, comprising a steel mesh, hollow tubes, a partition plate, and a concrete layer. The steel mesh is arranged in two layers at intervals. Several hollow tubes are arranged side by side between the two layers of steel mesh. A concrete layer is formed by cast-in-place concrete between the hollow tubes and on the outside of the steel mesh. The steel mesh extends into the main structure. A flexible partition plate is arranged between the periphery of the concrete layer and the main structure. The partition plate is fixedly connected to the steel mesh. The partition plate includes a bottom partition plate, an upper partition plate, and a side partition plate. Several tube caps are arranged side by side and fixedly on the bottom partition plate. The lower end of each hollow tube is connected to each tube cap on the bottom partition plate. A tube cap is also provided at the upper end of each hollow tube. Each hollow tube is fixedly connected between the steel mesh on both sides by a fixing clamp.

[0007] Preferably, the partition plate is made of extruded polystyrene foam for heat insulation.

[0008] Preferably, the thickness of the isolation plate is 20-30mm, the width of the isolation plate is less than the wall thickness of the main structure, and the isolation plate is located in the middle of the wall.

[0009] Preferably, the steel mesh is made of multiple horizontal steel bars and multiple vertical steel bars tied together, and the spacing between the steel bars in the steel mesh is an integer multiple of the diameter of the hollow tube.

[0010] Preferably, tie bars are fixedly tied between the two steel meshes, and the tie bars are tied at the intersection of the horizontal and vertical steel bars.

[0011] Preferably, the spacing between adjacent tie bars is twice the spacing between the reinforcing bars, and adjacent layers of tie bars are staggered along the vertical direction.

[0012] Preferably, the thickness of the reinforcing bar protective layer of the reinforcing bar mesh is greater than or equal to 15 mm, and the thickness of the reinforcing bar protective layer is the thickness of the concrete layer attached to the outer surface of the reinforcing bar mesh.

[0013] Preferably, the fixing clamp includes an integrally formed bending part, a connecting part, and a clamping plate part. The two bending parts are respectively connected to the two ends of the connecting part, and the steel bars of the steel mesh on both sides are respectively clamped in the bending part. A clamping plate part is provided at the end of the bending part. The two clamping plate parts are arranged opposite to each other and parallel to each other. The interval between the two clamping plate parts is the same as the diameter of the hollow tube. The two clamping plate parts are respectively clamped on both sides of the hollow tube.

[0014] Preferably, an anti-crack mesh is provided on the outer side of the junction between the concrete layer and the main structure.

[0015] Preferably, a plaster layer is provided on the outside of the concrete layer and the main structure, and the crack-resistant mesh is a 300mm wide steel wire mesh, which is fixed by steel wire mesh nails; a putty layer is provided on the outside of the concrete layer and the main structure, and the crack-resistant mesh is a 200mm wide alkali-resistant mesh cloth, which is fixed by adhesive.

[0016] Preferably, the hollow tube is made of PVC pipe.

[0017] Compared with existing technologies, the above technical solution has the following beneficial effects: 1. This utility model has several pipe caps arranged side by side and fixed on the bottom isolation plate. The lower end of each hollow pipe is connected to the pipe caps on the bottom isolation plate. The bottom isolation plate is used to position the hollow pipes for installation, which allows for quick installation and saves construction time. Each hollow pipe is fixedly connected to the steel mesh on both sides by fixing clamps to prevent the hollow pipes from floating when the concrete layer is poured. This utility model has good sound insulation and absorption effect, good thermal insulation performance and strong crack resistance.

[0018] 2. This utility model includes a steel mesh, hollow tubes, a partition plate, and a concrete layer. The steel mesh is arranged in two layers at intervals, and the hollow tubes are fixed between the steel mesh. A concrete layer is formed by casting concrete between the hollow tubes and on the outside of the steel mesh. A hollow wall is formed by setting hollow tubes and connecting them with the steel mesh inside the wall, which reduces the self-weight of the hollow wall and prevents the large weight difference between the concrete wall and the masonry wall from being detrimental to the structural stress. A flexible partition plate is set around the perimeter of the concrete layer and between it and the main structure. An indirect connection process is used to separate the hollow wall from the main structure, forming a flexible connection and reducing the risk of structural cracking and leakage.

[0019] 3. The fixing clamp includes an integrally set bending part, connecting part and clamping plate part. The steel bars of the steel mesh on both sides are respectively clamped in the bending part, and the two clamping plates are respectively clamped on both sides of the hollow tube. The hollow tube is convenient and quick to fix, reducing the amount of construction and greatly saving the construction period.

[0020] 4. The thickness of the protective layer of the reinforcing mesh should be greater than or equal to 15mm to ensure the thickness of the protective layer and reduce the risk of cracking in this area.

[0021] 5. Crack-resistant mesh is installed on the outside of the junction between the concrete layer and the main structure. The crack-resistant mesh covers the junction between the concrete layer and the main structure to prevent cracking at the junction. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the construction effect of this utility model.

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0024] Figure 3 This is a schematic diagram of the bottom isolation positioning plate.

[0025] Figure 4 This is a schematic diagram of the side isolation plate.

[0026] Figure 5 This is a structural diagram of the hollow tube and its fixing fixture.

[0027] Figure 6 This is a structural diagram of the fixing clamp.

[0028] Figure 7 This is a schematic diagram of the structure of this utility model.

[0029] Figure 8 This is a top view of the present invention.

[0030] Among them: 1. Side isolation plate 2. Steel mesh 3. Tie bar 4. Hollow tube 5. Crack-resistant mesh 6. Bottom isolation plate 7. Pipe cap 8. Fixing clamp 801. Bending part 802. Clamping plate part 803. Connecting part 9. Tamping port 10. Main structure. Detailed Implementation

[0031] Figures 1-8 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-8 The present invention will be further described below.

[0032] like Figures 1-2 As shown, this utility model discloses a hollow insulated concrete wall construction structure, comprising a steel mesh 2, hollow tubes 4, a partition plate, and a concrete layer. The steel mesh 2, hollow tubes 4, and concrete layer form a hollow wall. The hollow wall reduces the self-weight of the insulated wall and prevents the large weight difference between the concrete wall and the masonry wall from being detrimental to the structural stress. The steel mesh 2 is arranged in two layers at intervals, and several hollow tubes 4 are arranged side by side between the two layers of steel mesh 2. A concrete layer is formed by cast-in-place concrete between the hollow tubes 4 and outside the steel mesh 2. The steel mesh 2 extends into the main structure 10 and is fixed. A flexible partition plate is set between the periphery of the concrete layer and the main structure 10. The partition plate is firmly tied to the steel mesh 2 with wire. An indirect connection process is used to separate the hollow wall from the main structure 10, forming a flexible connection and reducing the risk of structural cracking and leakage.

[0033] Hollow pipe 4 is made of PVC. When the main structure 10 has a 100mm thick wall, hollow pipe 4 uses φ50mm pipe; when the main structure 10 has a 180-200mm thick wall, hollow pipe 4 uses φ110mm pipe. The diameter of hollow pipe 4 should be compatible with the wall thickness. The hollow wall must pass a fire resistance test. If hollow pipe 4 interferes with the installation of junction boxes, hollow pipe 4 can be installed in sections. Each section of hollow pipe 4 must have its end tightly sealed with a pipe cap 7.

[0034] like Figures 3-4 As shown, the partition includes a side partition 1 and a bottom partition 6. The partition on the upper part of the hollow wall is the same as the side partition 1. The partition is made of extruded polystyrene foam for insulation. The thickness of the partition is 20-30mm. The width of the partition is less than the wall thickness of the main structure 10. The width of the partition is 25mm less than the wall thickness of the main structure 10 on each side, and the partition is located in the middle of the wall. Several pipe caps 7 are fixedly installed side by side on the bottom partition 6. The lower end of each hollow pipe 4 is connected to the bottom partition 6. The caps 7 on each tube are connected, and the upper end of the hollow tube 4 is also equipped with a cap 7. First, the cap 7 is fixedly installed on the bottom isolation plate 6. The bottom isolation plate 6 is used to position the hollow tube 4 for installation, so as to quickly install the hollow tube and save construction time. Each hollow tube 4 is fixedly connected to the steel mesh 2 on both sides by fixing clamps 8. Some fixing clamps 8 are omitted in the attached figure. In fact, each hollow tube 4 is fixedly connected to the two crack-resistant steel mesh 2 by multiple fixing clamps 8 to prevent the hollow tube 4 from floating when pouring concrete.

[0035] like Figures 5-6 As shown, the fixing clamp 8 includes an integrally formed bending part 801, a connecting part 803, and a clamping plate part 802. The two bending parts 801 are respectively connected to the two ends of the connecting part 803. The steel bars of the steel mesh 2 on both sides are respectively clamped in the bending parts 801. The steel mesh 2 is made of multiple horizontal steel bars and multiple vertical steel bars tied together. The bending part 801 of the fixing clamp 8 is clamped on the vertical steel bars. A clamping plate part 802 is provided at the end of the bending part 801. The two clamping plate parts 802 are arranged opposite and parallel. The interval between the two clamping plate parts 802 is the same as the diameter of the hollow tube 4. The two clamping plate parts 802 are respectively clamped on both sides of the hollow tube 4. Fixing the hollow tube 4 with the fixing clamp 8 is convenient and quick, reduces the amount of construction and greatly saves the construction period.

[0036] like Figures 7-8As shown, the reinforcing mesh 2 is composed of multiple horizontal and vertical reinforcing bars tied together. Strict quality control is maintained during the binding process to ensure the reinforcing bars are firmly and stably bound, guaranteeing the stability and load-bearing capacity of the joints. φ6 threaded reinforcing bars are used. The spacing between the reinforcing bars in the reinforcing mesh 2 is an integer multiple of the diameter of the hollow tube 4, generally one or two times the diameter of the hollow tube 4. Tie bars 3 are fixedly tied between two reinforcing meshes 2, at the intersection of the horizontal and vertical reinforcing bars. The spacing between adjacent tie bars 3 is twice the spacing between the reinforcing bars, and adjacent layers of tie bars 3 are staggered along the vertical direction. The thickness of the concrete cover of the reinforcing mesh 2 is greater than or equal to 15mm, equal to the thickness of the concrete layer attached to the outer surface of the reinforcing mesh 2. Ensuring the thickness of the concrete cover of the reinforcing mesh 2 reduces the risk of cracking in this area.

[0037] Crack-resistant mesh 5 is installed on the outer side of the junction between the concrete layer and the main structure 10. The two ends of the crack-resistant mesh 5 are respectively set on the outer side of the concrete layer and the outer side of the main structure 10. The crack-resistant mesh 5 covers the junction between the concrete layer and the main structure 10 to prevent cracking at the junction. The crack-resistant mesh 5 with a plaster layer on the outer layer of the concrete layer and the main structure is made of 300mm wide steel wire mesh and is nailed to the wall. The crack-resistant mesh 5 with a putty layer on the outer layer of the concrete layer and the main structure is made of 200mm wide alkali-resistant mesh cloth and is pasted to the wall.

[0038] During construction, an isolation plate is installed between the perimeter of the concrete layer and the main structure 10. The width of the isolation plate is 25mm less than the wall thickness on each side and is centered. A pipe cap 7 for positioning the hollow tube 4 is fixed on the bottom isolation plate 6. The isolation plate is tied to the reinforcing steel. Then, hollow tubes 4 of different specifications are selected according to the wall thickness, while ensuring the thickness of the protective layer. The lower end of the hollow tube 4 is fixed to the pipe cap 7 on the bottom isolation plate 6. The upper end of the hollow tube 4 also needs to be sealed with a pipe cap to prevent concrete from entering the hollow tube 4. A reinforcing mesh 2 is formed by tying the hollow tube 4 on both sides. The quality is strictly controlled during the tying process to ensure that the reinforcing steel is tied firmly and stably, and to ensure the stability and stress performance of the joint. Then, the formwork is closed and concrete is poured. Finally, an anti-crack mesh 5 is set on the outer side of the junction between the concrete layer and the main structure 10.

[0039] Concrete pouring is carried out using a truck-mounted pump or a pump truck. When pouring hollow insulated concrete walls, concrete of the same grade as the main structure 10 is used. A tamping port 9 is reserved on the isolation plate. Concrete is poured through the tamping port 9. When pouring concrete for hollow walls, it should be poured and vibrated in layers. The pouring height should not exceed 500mm. When vibrating the second layer of concrete, the vibrator should extend into the next layer of concrete for no less than 50mm. The vibration spacing should be controlled within 300mm. A vibrator with a diameter of 30mm should be used for vibration. It is strictly forbidden to vibrate the vibrator close to the hollow tube 4 for a long time, which may cause damage to the cavity or displacement of the hollow tube 4.

[0040] This utility model forms a hollow wall by connecting hollow tubes 4 and steel mesh 2 within the wall, reducing the self-weight of the hollow wall and preventing the large weight difference between the concrete wall and the masonry wall from being detrimental to the structural stress. Flexible material isolation plates are set around the perimeter of the concrete layer and between it and the main structure to form a flexible connection, reducing the risk of structural cracking and leakage. The hollow tubes 4 are positioned by the bottom isolation plate 6, allowing for quick installation and saving construction time.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A hollow thermally insulated concrete wall construction structure, characterized in that: The structure includes a steel mesh (2), hollow tubes (4), a partition plate, and a concrete layer. The steel mesh (2) is arranged in two layers at intervals. Several hollow tubes (4) are arranged side by side between the two layers of steel mesh (2). A concrete layer is formed by cast-in-place concrete between the hollow tubes (4) and outside the steel mesh (2). The steel mesh (2) extends into the main structure (10). A flexible partition plate is set between the periphery of the concrete layer and the main structure (10). The partition plate is fixedly connected to the steel mesh (2). The partition plate includes a bottom partition plate (6), an upper partition plate, and a side partition plate (1). Several tube caps (7) are arranged side by side and fixed on the bottom partition plate (6). The lower end of each hollow tube (4) is connected to each tube cap (7) on the bottom partition plate (6). A tube cap (7) is also set on the upper end of the hollow tube (4). Each hollow tube (4) is fixedly connected between the steel mesh (2) on both sides by a fixing clamp (8).

2. The hollow thermally insulated concrete wall construction structure according to claim 1, characterized in that: The isolation panel is made of extruded polystyrene foam for heat insulation.

3. The hollow thermally insulated concrete wall construction structure according to claim 1, characterized in that: The thickness of the isolation plate is 20~30mm, the width of the isolation plate is less than the wall thickness of the main structure (10), and the isolation plate is set in the middle of the wall.

4. The hollow thermally insulated concrete wall construction structure according to claim 1, characterized in that: The steel mesh (2) is made up of multiple horizontal steel bars and multiple vertical steel bars tied together. The spacing between the steel bars in the steel mesh (2) is an integer multiple of the diameter of the hollow tube (4).

5. The hollow thermally insulated concrete wall construction structure according to claim 4, characterized in that: Tie bars (3) are fixedly tied between the two steel meshes (2), and the tie bars (3) are tied at the intersection of the horizontal and vertical steel bars.

6. The hollow thermally insulated concrete wall construction structure according to claim 5, characterized in that: The spacing between adjacent tie bars (3) is twice the spacing between steel bars, and adjacent tie bars (3) are staggered along the vertical direction.

7. The hollow thermally insulated concrete wall construction structure according to claim 1, characterized in that: The thickness of the protective layer of the steel mesh (2) is greater than or equal to 15 mm.

8. The hollow thermally insulated concrete wall construction structure according to claim 1, characterized in that: The fixing clamp (8) includes an integrally formed bending part (801), a connecting part (803), and a clamping plate part (802). The two bending parts (801) are respectively connected to the two ends of the connecting part (803). The steel bars of the steel mesh (2) on both sides are respectively clamped in the bending part (801). A clamping plate part (802) is provided at the end of the bending part (801). The two clamping plates (802) are arranged opposite to each other and parallel. The interval between the two clamping plates (802) is the same as the diameter of the hollow tube (4). The two clamping plates (802) are respectively clamped on both sides of the hollow tube (4).

9. The hollow thermally insulated concrete wall construction structure according to claim 1, characterized in that: A crack-resistant mesh (5) is provided on the outside of the junction between the concrete layer and the main structure (10).

10. A hollow thermally insulated concrete wall construction structure according to claim 9, characterized in that: A plaster layer is provided on the outside of the concrete layer and the main structure (10), and the crack-resistant mesh (5) is made of 300mm wide steel wire mesh and is fixed by steel wire mesh nails; a putty layer is provided on the outside of the concrete layer and the main structure (10), and the crack-resistant mesh (5) is made of 200mm wide alkali-resistant mesh cloth and is fixed by adhesive.

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