Single-sided laminated hollow wall structure and manufacturing process

Abstract

The application discloses a single-face laminated hollow wall structure and a manufacturing process, which comprises oppositely arranged concrete plates and formwork, and connecting components are pre-embedded on opposite sides of the concrete plates and the formwork and are connected by the connecting components to form a hollow wall, and the connecting components on the two sides are connected close to the formwork. A reinforcement cage is arranged in the hollow wall, one side of the reinforcement cage is pre-embedded in the concrete plate, and the other side of the reinforcement cage is spaced apart from the formwork. The connecting component pre-embedded in the concrete plate is a connecting seat, one side of the connecting seat facing the formwork is provided with a butt joint plate, and the butt joint plate is located between the reinforcement cage and the formwork. The connecting component pre-embedded in the formwork is a butt joint ring, one end of the butt joint ring is connected with the butt joint plate. The inner side of the butt joint ring is an operation cavity, the operation cavity penetrates through the formwork, and the connecting area of the butt joint ring and the butt joint plate is exposed to the operation cavity. The hollow wall has the advantages of light weight of the prefabricated component and stable forming structure.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building engineering technology, and in particular to a single-sided composite hollow wall structure and its manufacturing process. Background Technology

[0002] Shear wall structures account for a large proportion of housing in my country. However, due to the thin walls and complex reinforcement, the promotion of precast walls has been slow. Current precast shear wall structure forms and construction techniques in my country include: Precast solid shear walls: The wall's reinforcing steel system is cast together with the concrete. Its disadvantages include high mold costs and overall high cost; the need for grouting connections between upper and lower layers of reinforcing steel, resulting in poor technical stability; heavy weight, making transportation and hoisting difficult; and difficulty in pre-embedding junction boxes and conduits.

[0003] Hollow wall forming using the inverted insertion process: The reinforcing steel bars are cast separately into the inner and outer leaf walls. First, the steel reinforcement system is inserted into the inner leaf wall concrete; after forming, it is inverted and inserted into the outer leaf wall concrete to form a hollow wall. Its drawbacks include poor forming accuracy; uncertain insertion depth, making it prone to mold bulging; high equipment investment and manufacturing costs; and difficulty in creating a rough inner cavity surface, affecting structural safety.

[0004] Hollow wall without formwork: The inner and outer sides of the wall's steel reinforcement system are wrapped with formwork to form a precast hollow wall. Its disadvantages include low forming rigidity, deformation during transportation and hoisting, serious bulging during casting, and large footprint due to double-sided formwork, which affects the usable floor area.

[0005] In view of the above, a new prefabricated hollow wall structure is proposed. Summary of the Invention

[0006] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a single-sided composite hollow wall structure and manufacturing process, which has the advantages of light weight of prefabricated components and stable molding structure.

[0007] Technical Solution: To achieve the above objectives, the present invention provides a single-sided composite hollow wall structure, comprising a concrete slab and a formwork not to be removed, arranged opposite each other. Connecting components are pre-embedded on opposite sides of the concrete slab and the formwork, and are connected to form a hollow wall. The connection points of the connecting components on both sides are close to the formwork not to be removed. A reinforcing cage is provided within the hollow wall, with one side of the reinforcing cage pre-embedded in the concrete slab and the other side of the reinforcing cage spaced apart from the formwork not to be removed. The connecting component pre-embedded in the concrete slab is a connecting seat, with a butt plate on the side of the connecting seat facing the formwork not to be removed, located between the reinforcing cage and the formwork not to be removed. The connecting component pre-embedded in the formwork not to be removed is a butt ring, with one end of the butt ring connected to the butt plate. The inner side of the butt ring is a working cavity, which penetrates the formwork not to be removed, and the butt ring connects with... The contact area of ​​the docking plates is exposed towards the working cavity; one end of the docking ring that contacts the docking plate extends out of the non-removable template, thus separating the docking plate from the non-removable template; a positioning element is connected to one end of the docking ring that contacts the docking plate, and a positioning hole is provided through the docking plate, into which the positioning element extends to position the docking plate and the docking ring; the positioning element includes a straight plate and a hook plate; the width of the straight plate is the same as that of the positioning hole, and when the docking ring and the docking plate are in contact, the straight plate extends into the positioning hole and is positioned against the edge of the positioning hole, and the hook plate is hooked onto the side of the docking plate facing away from the non-removable template; the inner side of one end of the docking ring is welded to the docking plate; a first anchor hole is provided on the hook plate, and a second anchor hole is provided on the docking plate, and anchor bolts are inserted into the first and second anchor holes to anchor the hook plate to the docking plate.

[0008] Furthermore, the mating plate is connected to a support rib, the bottom of which is embedded in the concrete slab, and the top of which supports the mating plate, thus creating a gap between the mating plate and the concrete slab.

[0009] Furthermore, the docking ring is connected with tie bars, which are embedded in the template that does not require disassembly.

[0010] The manufacturing process of a single-sided composite hollow wall structure includes the following steps: Step S1: Concrete slabs and templates that do not need to be removed are made separately; Step S2: The templates that do not need to be removed are laid on the concrete slabs, so that the butt rings are connected to the butt plates, and the straight plates and hook plates are inserted into the positioning holes. Then, the templates that do not need to be removed are moved so that the straight plates are positioned against the edges of the positioning holes, and the hook plates are hooked onto the side of the butt plates facing away from the templates that do not need to be removed; Step S3: Welding tools are inserted into the working cavity and welded along the inner edge of the butt ring to weld the butt plates and the butt ring together; Step S4: Anchor bolts are inserted into the first anchor bolt hole and the second anchor bolt hole to anchor the hook plates to the butt plates; Step S5: The working cavity inside the butt ring is sealed.

[0011] Beneficial effects: The single-sided composite hollow wall structure and manufacturing process of the present invention have the following beneficial effects: 1) The hollow wall is composed of a single precast concrete slab and a single non-removable formwork. Compared with the inverted insertion process for forming hollow walls, the weight is greatly reduced, making it convenient for transportation and installation. Compared with the non-removable formwork hollow wall, the forming rigidity is greater, and the connection structure between the concrete slab and the non-removable formwork is stable, making it less prone to bulging during pouring. 2) The concrete slab and the formwork are connected by a butt plate and a butt ring. The end of the butt ring facing the butt plate has a hook-shaped positioning structure. The hook-shaped positioning structure can determine the connection position between the butt ring and the butt plate, and can also fix the butt ring and the butt plate by welding and anchoring, thereby improving the connection strength between the concrete slab and the formwork. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the overall structure of the hollow wall of the present invention; Appendix Figure 2 This is a schematic diagram of the connection between the docking ring and the docking plate. Detailed Implementation

[0013] The invention will now be further described with reference to the accompanying drawings.

[0014] As attached Figures 1 to 2 The single-sided composite hollow wall structure includes a concrete slab 1 and a formwork 2 arranged opposite each other. Connecting components are pre-embedded on opposite sides of the concrete slab 1 and the formwork 2, and are connected to form a hollow wall 3. The connection points of the connecting components on both sides are close to the formwork 2, allowing for reinforcement and connection from the direction of the formwork 2, facilitating operation. The interior of the hollow wall 3 is a casting cavity. The side of the concrete slab 1 facing the casting cavity has a rough composite surface. When secondary concrete is poured into the casting cavity, the rough composite surface allows the new and old concrete to better overlap, forming a complete load-bearing wall.

[0015] Compared to a hollow wall 3 with concrete slabs 1 on both sides, the present invention has a concrete slab 1 on only one side, significantly reducing the overall weight and facilitating transportation and installation. Furthermore, compared to a hollow front wall where both the inner and outer surfaces are encased in a non-removable formwork 2, the wall of the present invention has greater forming rigidity and is less prone to bulging.

[0016] A steel reinforcement cage 4 is installed inside the hollow wall 3. One side of the steel reinforcement cage 4 is embedded in the concrete slab 1, and the other side of the steel reinforcement cage 4 is spaced apart from the formwork 2 that does not need to be removed. (See attached...) Figure 1 As shown, the steel cage 4 is generally a double-layer bidirectional steel mesh, with the lower layer of steel mesh cast inside the concrete slab 1.

[0017] The connecting component embedded in the concrete slab 1 is a connecting seat 5. A butt plate 6 is located on the side of the connecting seat 5 facing the formwork 2. The butt plate 6 is situated between the reinforcing cage 4 and the formwork 2, and the butt plate 6, concrete slab 1, and formwork 2 are parallel. The connecting component embedded in the formwork 2 is a butt ring 7, one end of which connects to the butt plate 6. The inner side of the butt ring 7 is a working cavity 8, which penetrates the formwork 2. The contact area between the butt ring 7 and the butt plate 6 is exposed towards the working cavity 8. The butt ring 7 and the butt plate 6 can be connected and processed through the working cavity 8, for example, by welding them together.

[0018] The connecting plate 6 is connected to a support rib 9, which is arched. The bottom of the support rib 9 is embedded in the concrete slab 1, and the top of the support rib 9 supports the connecting plate 6, so that the connecting plate 6 and the concrete slab 1 are spaced apart.

[0019] One end of the connecting ring 7, which connects to the connecting plate 6, extends out of the template 2, creating a gap between the connecting plate 6 and the template 2. By controlling the distance between the connecting plate 6 and the concrete slab 1, and the height of the connecting ring 7 extending out of the template 2, the distance between the concrete slab 1 and the template 2 can be precisely controlled, thereby controlling the thickness of the hollow wall 3. The template 2 is made of high-strength materials, such as high-performance concrete and epoxy resin, and reinforced with steel mesh 16 to enhance its strength. Tie bars 10 are connected to the waist of the connecting ring 7, and the tie bars 10 are embedded entirely within the template 2. The template 2 is cast, and the height of the connecting ring 7 is greater than the thickness of the template 2 so that the bottom of the connecting ring 7 is embedded within the template 2.

[0020] A positioning element 11 is connected to one end of the docking ring 7 that connects to the docking plate 6. A positioning hole 12 is provided through the docking plate 6, and the positioning element 11 extends into the positioning hole 12 to position the docking position of the docking plate 6 and the docking ring 7. There are multiple sets of opposing docking plates 6 and docking rings 7 between the concrete slab 1 and the non-removable formwork 2. By positioning the positioning element 11 in cooperation with the positioning hole 12, the connection position of the docking plate 6 and the docking ring 7 can be precisely controlled, making the forming dimensions of the hollow wall 3 more accurate.

[0021] As attached Figure 2As shown, the positioning component 11 includes a straight plate 13 and a hook plate 14. The width of the straight plate 13 is the same as that of the positioning hole 12. When the docking ring 7 is connected to the docking plate 6, the straight plate 13 extends into the positioning hole 12 and abuts against the edge of the positioning hole 12 to position the docking ring 7 and the docking plate 6. The hook plate 14 is located at the front end of the straight plate 13. After the straight plate 13 extends into the positioning hole 12, the hook plate 14 hooks onto the side of the docking plate 6 facing away from the non-removable template 2, and the hook plate 14 is in contact with the side of the docking plate 6 facing away from the non-removable template 2. Due to the presence of the hook plate 14, the tensile strength of the docking plate 6 and the docking ring 7 is stronger, and they are less likely to detach from each other.

[0022] One end of the docking ring 7 is welded to the docking plate 6. A first anchor hole is formed on the hook plate 14, and a second anchor hole is formed on the docking plate 6. The first and second anchor holes can be pre-drilled or formed after the docking plate 6 and docking ring 7 are positioned together. The second anchor hole on the docking plate 6 is offset from the position of the supporting rib 9. Anchor bolts 15 are inserted into the first and second anchor holes to anchor the hook plate 14 to the docking plate 6. This invention employs a hook plate 14 between the docking plate 6 and the docking ring 7. The presence of the hook plate 14 allows the docking plate 6 to be exposed towards the working cavity 8 for welding, and also allows for anchoring between the hook plate 14 and the docking plate 6. Because of this dual fixation through welding and anchoring, the connection strength between the docking plate 6 and the docking ring 7 is higher.

[0023] This invention also includes a manufacturing process for a single-sided composite hollow wall structure, comprising the following steps: Step S1: Construct concrete slab 1 and formwork 2 that do not need to be removed; When making concrete slab 1, first prepare the mold, then place the connecting seat 5, then lay the steel cage 4, then install the embedded parts such as junction boxes and conduits, then pour the concrete to form it, roughen the overlapping surface before the concrete solidifies, and finally cure the concrete slab 1 to form it. When making the no-removal template 2, prepare the mold, install the connecting ring 7 at the corresponding position, then lay the reinforcing steel mesh 16, pour the no-removal template 2 mixture, and demold it after curing and shaping. Step S2: Lay the template 2 on the concrete slab 1 so that the connecting ring 7 is connected to the connecting plate 6, and insert the straight plate 13 and the hook plate 14 into the positioning hole 12. Then move the template 2 so that the straight plate 13 is in contact with the edge of the positioning hole 12 and the hook plate 14 is hooked onto the side of the connecting plate 6 facing away from the template 2. If there are pre-drilled anchor holes, the first anchor hole on the hook plate 14 is opposite to the second anchor hole on the connecting plate 6. Step S3: Insert the welding tool into the working cavity 8 and weld along the inner edge of the mating ring 7 to weld the mating plate 6 and the mating ring 7 together; Step S4: Insert the anchor bolt 15 into the first anchor bolt 15 hole and the second anchor bolt 15 hole to anchor the hook plate 14 to the butt plate 6. Step S5: Seal the working cavity 8 inside the connecting ring 7, repair the surface, and obtain the hollow wall 3; when applying, transport the hollow wall 3 to the construction site, connect multiple hollow walls 3 and arrange the wall reinforcement system, and then pour concrete in the hollow wall 3 a second time to form a complete load-bearing wall.

[0024] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A single-sided composite hollow wall structure, characterized in that: The structure includes a concrete slab (1) and a formwork (2) that are set opposite to each other. Connecting members are pre-embedded on opposite sides of the concrete slab (1) and the formwork (2), and they are connected to form a hollow wall (3). The connection points of the connecting members on both sides are close to the formwork (2). A steel cage (4) is set inside the hollow wall (3). One side of the steel cage (4) is pre-embedded in the concrete slab (1), and the other side of the steel cage (4) is spaced apart from the formwork (2). The connecting component embedded in the concrete slab (1) is a connecting seat (5). The connecting seat (5) has a butt plate (6) on the side facing the template (2). The butt plate (6) is located between the steel cage (4) and the template (2). The connecting component embedded in the template (2) is a butt ring (7). One end of the butt ring (7) is connected to the butt plate (6). The inner side of the butt ring (7) is a working cavity (8). The working cavity (8) penetrates the template (2). The contact area between the butt ring (7) and the butt plate (6) is exposed to the working cavity (8). One end of the docking ring (7) that connects to the docking plate (6) extends out of the non-removable template (2), so that the docking plate (6) and the non-removable template (2) are spaced apart; a positioning element (11) is connected to one end of the docking ring (7) that connects to the docking plate (6), and a positioning hole (12) is provided through the docking plate (6), and the positioning element (11) extends into the positioning hole (12) to position the docking plate (6) and the docking ring (7) at the connection position; The positioning component (11) includes a straight plate (13) and a hook plate (14); the width of the straight plate (13) is the same as that of the positioning hole (12). When the docking ring (7) is connected to the docking plate (6), the straight plate (13) extends into the positioning hole (12) and is positioned against the edge of the positioning hole (12). The hook plate (14) is hooked onto the side of the docking plate (6) facing away from the non-removable template (2). The inner side of one end of the docking ring (7) is welded to the docking plate (6); the hook plate (14) is provided with a first anchor hole, and the docking plate (6) is provided with a second anchor hole. The anchor bolt (15) is inserted into the first anchor hole and the second anchor hole to anchor the hook plate (14) and the docking plate (6).

2. The single-sided composite hollow wall structure according to claim 1, characterized in that: The docking plate (6) is connected to a support bar (9). The bottom of the support bar (9) is embedded in the concrete slab (1), and the top of the support bar (9) supports the docking plate (6), so that the docking plate (6) and the concrete slab (1) are spaced apart.

3. The single-sided composite hollow wall structure according to claim 1, characterized in that: The connecting ring (7) is connected with a tie bar (10), and the tie bar (10) is embedded in the template (2) without disassembly.

4. The manufacturing process of the single-sided composite hollow wall structure according to claim 1, characterized in that: Includes the following steps: Step S1: Make concrete slabs (1) and formwork that does not need to be removed (2) respectively; Step S2: Lay the template (2) on the concrete slab (1), so that the connecting ring (7) is connected to the connecting plate (6), and insert the straight plate (13) and hook plate (14) into the positioning hole (12). Then move the template (2) so that the straight plate (13) is in contact with the edge of the positioning hole (12) and the hook plate (14) is hooked onto the side of the connecting plate (6) facing away from the template (2). Step S3: Insert the welding tool into the working cavity (8) and weld along the inner port edge of the docking ring (7) to weld the docking plate (6) and the docking ring (7) together; Step S4: Insert the anchor bolt (15) into the first anchor hole and the second anchor hole to anchor the hook plate (14) to the butt plate (6); Step S5: Seal the working cavity (8) inside the docking ring (7).

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