A membrane shell shear wall frame and its manufacturing method

Abstract

The present application discloses a membrane shell shear wall frame, comprising two layers of membrane shells, a steel frame and a positioning connector. The membrane shells have holes that can accommodate the positioning connectors. A cavity for post-cast concrete is formed between the two layers of the membrane shells. The steel frame is located in the cavity, and the first end of the positioning connector is fixed to the steel frame, and the second end is fixed to the membrane shell after passing through the hole. The above-mentioned membrane shell shear wall frame is easier to produce, transport and construct, and the structural force transmission path is more reliable, with better seismic performance. At the same time, it can be waterproof, heat-insulating and heat-insulating, which is conducive to functional recovery after a strong earthquake and has better durability. The present application also discloses a method for manufacturing a membrane shell shear wall frame, which has the same advantages as the above-mentioned membrane shell shear wall frame.

Description

Technical Field

[0001] The present invention belongs to the technical field of prefabricated buildings, and in particular relates to a membrane shell shear wall frame and a manufacturing method thereof. Background Art

[0002] Prefabricated buildings are buildings whose components and accessories are pre-fabricated in a factory, then transported to the construction site and assembled and installed on-site using reliable connections. With the development of the economy and technology, the advantages of cast-in-place construction have gradually disappeared. Compared with traditional cast-in-place construction, prefabricated buildings offer advantages such as high-quality components, energy conservation and environmental protection, shorter construction periods, and reduced labor costs. Therefore, prefabricated buildings have a brighter future. Existing shear walls suffer from heavy weight, difficulty in transportation and hoisting, cumbersome on-site formwork removal, and the potential for membrane shell rupture during post-concrete pouring. Therefore, a more robust membrane shell shear wall framework is urgently needed to address these issues. Summary of the Invention

[0003] To solve the above problems, the present invention provides a membrane shell shear wall frame and a manufacturing method thereof, which are more convenient for production, transportation and construction, have a more reliable structural force transmission path, better seismic performance, and are waterproof, heat-insulating and heat-insulating, which is conducive to functional recovery after a strong earthquake and has better durability.

[0004] The present invention provides a membrane shell shear wall frame, comprising two layers of membrane shells, a steel frame and a positioning connector. The membrane shells are provided with holes for accommodating the positioning connector. A cavity for post-cast concrete is formed between the two layers of the membrane shells. The steel frame is located in the cavity, and the first end of the positioning connector is fixed to the steel frame, and the second end is fixed to the membrane shell after passing through the hole.

[0005] Preferably, in the above-mentioned membrane shell shear wall frame, the positioning connector includes an Ω-shaped clip, a screw and a bolt, wherein the screw passes through the screw holes at both ends of the Ω-shaped clip at the same time to achieve the fixation of the screw and the Ω-shaped clip, the steel bars in the steel frame pass through the middle hole of the Ω-shaped clip to achieve the fixation of the steel frame and the Ω-shaped clip, and the screw also passes through the hole and extends to the outside of the membrane shell and uses the bolt to achieve the fixation of the steel frame and the membrane shell.

[0006] Preferably, in the above-mentioned membrane shell shear wall frame, the positioning connector also includes a gasket, which has an internal thread corresponding to the external thread of the screw to be screwed into the screw, and the screw has an internal thread corresponding to the external thread of the bolt, and the bolt is screwed into the screw to make the gasket tightly attached to the outer side of the membrane shell.

[0007] Preferably, in the above-mentioned membrane shell shear wall skeleton, the gasket is a circle with a radius R', and the relationship between the gasket, the outer radius r of the screw and the radius R of the hole satisfies the following relationship:

[0008] R'>2R-r.

[0009] Preferably, in the above-mentioned membrane shell shear wall skeleton, the radius of the hole is 1.5 to 2 times the radius of the cross section of the screw.

[0010] Preferably, in the above-mentioned membrane shell shear wall skeleton, the inner wall surface of the membrane shell located on one side of the cavity has wavy or linear concave and convex parts.

[0011] Preferably, in the above-mentioned membrane shell shear wall skeleton, the membrane shell is made of a material added with polyvinyl alcohol fiber and polyethylene fiber.

[0012] Preferably, in the above membrane shell shear wall skeleton, the production formula ratio of the membrane shell is:

[0013] The amount of each material in one cubic meter of concrete is expressed as water: 300kg to 600kg; 52.5 grade Portland cement: 350kg to 900kg; quartz sand: 400kg to 650kg; basalt gravel: 0kg to 650kg; fly ash: 0kg to 850kg; polyvinyl alcohol fiber: 5kg to 15kg; polyethylene fiber: 5kg to 15kg; water reducer: 5kg to 15kg.

[0014] Preferably, in the above-mentioned membrane shell shear wall skeleton, the thickness of the membrane shell is 15 mm to 30 mm.

[0015] The present invention provides a method for manufacturing a membrane shell shear wall frame, comprising:

[0016] Making a membrane shell with holes;

[0017] Tie the steel frame and lay it flat in the cavity of the membrane shell;

[0018] Fixing the first end of the positioning connector to the horizontally distributed steel bars in the steel skeleton;

[0019] Passing the second end of the positioning connector through the hole and fixing it to the membrane shell;

[0020] After turning the whole thing over, perform the same operation on the other side to obtain the membrane shell shear wall skeleton.

[0021] From the above description, it can be seen that the membrane shell shear wall frame provided by the present invention has the first end of the positioning connector fixed to the steel frame, and the second end is fixed to the membrane shell after passing through the hole. In this way, the connector does not need to pass through the steel frame, thus avoiding the tedious adjustment process when the connector cannot pass through the steel frame. As a result, the membrane shell shear wall frame is easier to produce, transport and construct, the structural force transmission path is more reliable, and the seismic performance is better. At the same time, it can be waterproof, heat-insulating and heat-insulating, which is conducive to functional recovery after a strong earthquake and has better durability. The above-mentioned membrane shell shear wall frame manufacturing method has the same advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a membrane shell shear wall skeleton provided by the present invention;

[0024] Figure 2 A two-dimensional front view of an embodiment of a membrane shell shear wall skeleton provided by the present invention;

[0025] Figure 3 A three-dimensional structural diagram of a positioning connector for a membrane shell shear wall frame provided by the present invention;

[0026] Figure 4 This is a schematic diagram of an embodiment of a method for manufacturing a membrane shell shear wall skeleton provided by the present invention. DETAILED DESCRIPTION

[0027] The core of the present invention is to provide a membrane shell shear wall frame and its manufacturing method, which is more convenient for production, transportation and construction, has a more reliable structural force transmission path, better seismic performance, and is waterproof, heat-insulating and heat-insulating, which is conducive to functional recovery after a strong earthquake and has better durability.

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The embodiment of the membrane shell shear wall frame provided by the present invention is as follows: Figure 1 As shown, Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of a membrane shell shear wall skeleton provided by the present invention. The embodiment of the membrane shell shear wall skeleton may include two layers of membrane shells 1, a steel skeleton 2 and a positioning connector 3. The steel skeleton 2 may be composed of a double layer of horizontally distributed steel bars 201, a vertically distributed steel bar 202 and a tie bar 203. The membrane shell 1 has holes for accommodating the positioning connector 3. A cavity 4 for post-cast concrete is formed between the two layers of membrane shells 1. The steel skeleton 2 is located in the cavity 4, and the first end of the positioning connector 3 is fixed to the steel skeleton 2, and the second end is fixed to the membrane shell 1 after passing through the hole. The number and spacing of the tie bars of the positioning connector 3 and the steel skeleton 2 can be adjusted according to actual needs. The lower half of the shear wall should be more and denser to ensure the overall stability and reliability of the composite shear wall.

[0030] It should be noted that the above-mentioned two layers of membrane shells 1 are placed in parallel and separated by a distance of the thickness of a shear wall, which can be but is not limited to 200mm. The cavity 4 formed between the two is used for post-cast concrete. Since the membrane shells 1 are considered not to participate in the force of the entire wall, the cavity 4 formed between the membrane shells 1 is considered to be the thickness of the shear wall. The use of the above-mentioned non-transverse through-type positioning connector 3 solves the problems of the shear wall in the prior art, such as the heavy weight of the shear wall, the difficulty in transportation and lifting, and the cumbersome on-site construction formwork and demoulding procedures. The system has the characteristics of light weight, convenient transportation and hoisting, no need to demould at the construction site, and high construction efficiency.

[0031] From the above description, it can be seen that in the embodiment of the above-mentioned membrane shell shear wall frame provided by the present invention, since the first end of the positioning connector is fixed to the steel frame and the second end is fixed to the membrane shell after passing through the hole, the connector does not need to pass through the steel frame, thereby avoiding the tedious adjustment process when the connector cannot pass through the steel frame. Therefore, the membrane shell shear wall frame is more convenient for production, transportation and construction, the structural force transmission path is more reliable, the seismic performance is better, and it can be waterproof, heat-insulating and heat-insulating, which is conducive to functional recovery after a strong earthquake and has better durability.

[0032] In a specific embodiment of the membrane shell shear wall frame, Figure 2 and Figure 3 , Figure 2 A two-dimensional front view of an embodiment of a membrane shell shear wall skeleton provided by the present invention, Figure 3The present invention provides a three-dimensional structural diagram of a positioning connector for a membrane shell shear wall frame. The positioning connector 3 can preferably include an Ω-shaped clip 301, a screw 302, and a bolt 303. The screw 302 passes through the screw holes at both ends of the Ω-shaped clip 301 to fix the screw 302 and the Ω-shaped clip 301. The steel bars in the steel skeleton 2 pass through the middle hole of the Ω-shaped clip 301 to fix the steel skeleton 2 and the Ω-shaped clip 301. The screw 302 also passes through the hole and extends to the outside of the membrane shell 1 and uses the bolt 303 to fix the steel skeleton 2 and the membrane shell 1. It can be seen that using this type of positioning connector 3, the steel skeleton 2 can be more firmly fixed in the cavity 4 inside the membrane shell 1, so that the subsequent concrete pouring process can be more stable, improving the quality of the construction project. Of course, other types of positioning connectors can also be selected according to actual needs, which is not limited here. Furthermore, the radius of the hole can preferably be 1.5 to 2 times the cross-sectional radius of the screw 302.

[0033] In another specific embodiment of the membrane shell shear wall skeleton, the positioning connector 3 may also preferably include a gasket 304. The gasket 304 has an internal thread corresponding to the external thread of the screw 302 to be screwed into the screw 302. The screw 302 has an internal thread corresponding to the external thread of the bolt 303. The bolt 303 is screwed into the screw 302 to tightly fit the gasket 304 against the outer side of the membrane shell 1. The use of such a gasket 304 can better prevent leakage of the membrane shell. Furthermore, the gasket is circular with a radius of R', and the relationship between it, the outer radius r of the screw, and the radius R of the hole satisfies the following relationship:

[0034] R'>2R-r.

[0035] Specifically, the hole radius can be preferably 20 mm, the gasket radius can be preferably 40 mm, the outer radius of the screw can be preferably 6 mm, and the inner radius can be preferably 4 mm. In this case, no matter how the screw 302 is adjusted, the circular gasket can completely cover the hole reserved by the membrane shell, which can better prevent leakage during on-site post-pouring of concrete.

[0036] In another specific embodiment of the above-mentioned membrane shell shear wall frame, the inner wall surface of the membrane shell located on one side of the cavity has wavy or linear concave and convex parts. Specifically, when making the tough membrane shell and the concrete has not yet solidified, a stick-shaped tool can be used to scrape multiple linear or other shaped grooves on the surface of the outer wall on one side of the membrane shell cavity. Such an uneven surface is to increase the contact area between the concrete and the tough membrane shell when the concrete is poured later, so as to better bond them into a whole and make them better fixed. Of course, other shapes of concave and convex parts can also be set according to actual needs, which is not limited here.

[0037] In a preferred embodiment of the above-mentioned membrane shell shear wall frame, the membrane shell 1 is made of a material to which polyvinyl alcohol fiber and polyethylene fiber are added. These two materials have high tensile strength and high elastic modulus, and thus can improve the toughness and tensile resistance of the membrane shell. Of course, other materials can also be selected according to actual needs to make such a membrane shell, which is not limited here.

[0038] In another preferred embodiment of the membrane shell shear wall skeleton, the manufacturing formula ratio of the membrane shell 1 can be:

[0039] The amount of each material in one cubic meter of concrete is expressed as water: 300kg to 600kg; 52.5 grade silicate cement: 350kg to 900kg; quartz sand: 400kg to 650kg; basalt gravel: 0kg to 650kg; fly ash: 0kg to 850kg; polyvinyl alcohol fiber: 5kg to 15kg; polyethylene fiber: 5kg to 15kg; water reducer: 5kg to 15kg. This can better improve the toughness and tensile strength of the membrane shell. Of course, these amounts can also be adaptively adjusted according to actual needs, which is not limited here.

[0040] In another preferred embodiment of the above-mentioned membrane shell shear wall skeleton, the thickness of the membrane shell 1 can preferably be 15 mm to 30 mm. It should be noted that, precisely because the above-mentioned membrane shell has stronger toughness, the thickness can ensure sufficient stability when it is thinner and will not break easily. A thinner thickness can make the entire skeleton lighter and save costs. Of course, other thicknesses can also be selected according to actual needs, which is not limited here.

[0041] The present invention provides a method for manufacturing a membrane shell shear wall frame. Figure 4 As shown, Figure 4 This is a schematic diagram of an embodiment of a method for manufacturing a membrane shell shear wall frame provided by the present invention. The method may include the following steps:

[0042] S1: making a membrane shell with holes;

[0043] S2: Tie the steel frame and lay it flat in the cavity of the membrane shell;

[0044] S3: Fixing the first end of the positioning connector to the horizontal distribution steel bars in the steel skeleton;

[0045] S4: Pass the second end of the positioning connector through the hole and fix it to the membrane housing;

[0046] S5: Flip the whole thing over and perform the same operation on the other side to obtain the membrane shell shear wall skeleton.

[0047] Specifically, when prefabricated components are produced in a factory, the membrane shell is first standardized and mass-produced, and then the steel skeleton is tied and laid flat. The Ω-shaped clips and screws in the positioning connector are connected to the horizontal distribution steel bars of the steel skeleton in advance. Then, the holes in the membrane shell are aligned with the screws in the positioning connector 3. After positioning and adjusting correctly, the circular gaskets and bolts are connected and fixed to the screws. Finally, the whole is reversed and the same operation is performed on the other side. During on-site installation, the wall positioning line is first drawn, and then the membrane shell shear wall panel is slowly hoisted. After the vertical distribution steel bars of the lower wall panel or the reserved bars of the floor slab are inserted into the cavity of the upper wall panel, they are vertically overlapped with the vertical distribution steel bars. Then, the wall diagonal support is set up, the edge component steel bars, formwork and diagonal support are laid, and then concrete is poured into the cavity. Finally, after the curing is completed, the circular gaskets and bolts in the positioning connector can be easily removed and can be reused after recycling.

[0048] To sum up, the above-mentioned membrane shell shear wall frame and its manufacturing method are adopted, and the membrane shell adopts concrete with added polyvinyl alcohol and polyethylene fiber, which enhances the ductility and strength of the membrane shell and avoids the occurrence of mold explosion during the post-pouring of concrete. At the same time, the membrane shell becomes thinner, which is conducive to reducing the overall weight of the prefabricated wall and is more conducive to lifting and transportation. The membrane shell does not need to be demolded after the post-pouring of concrete, and the surface of the component does not need to be plastered, which greatly saves on-site labor costs. The two layers of membrane shells are arranged in parallel and connected by positioning connectors, making the membrane shell shear wall more stable and strong, and increasing the overall seismic performance. The prefabricated components can be standardized and integrated for production, which is conducive to reducing production costs. Moreover, the circular gaskets and bolts in the positioning connectors can be removed and recycled after use, which can greatly reduce material costs. The entire scheme has fewer on-site construction processes, high construction efficiency, and better structural integrity.

[0049] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A membrane shell shear wall frame, characterized in that: The invention comprises two membrane shells, a steel frame and a positioning connector. The membrane shells have holes for accommodating the positioning connector. A cavity for post-casting concrete is formed between the two membrane shells. The steel frame is located in the cavity. The first end of the positioning connector is fixed to the steel frame, and the second end is fixed to the membrane shell after passing through the hole. The positioning connector includes an Ω-shaped buckle, a screw and a bolt, wherein the screw passes through the screw holes at both ends of the Ω-shaped buckle at the same time to achieve the fixation of the screw and the Ω-shaped buckle, the steel bars in the steel bar skeleton pass through the middle hole of the Ω-shaped buckle to achieve the fixation of the steel bar skeleton and the Ω-shaped buckle, and the screw also passes through the hole and extends to the outside of the membrane shell and uses the bolt to achieve the fixation of the steel bar skeleton and the membrane shell; The positioning connector further includes a gasket having an internal thread corresponding to the external thread of the screw to be screwed into the screw, and the screw has an internal thread corresponding to the external thread of the bolt, and the bolt is screwed into the screw to tightly fit the gasket against the outer side of the membrane shell; The gasket is a circle with a radius of R', which satisfies the following relationship with the outer radius r of the screw and the radius R of the hole: R'>2R-r; The radius of the hole is 1.5 to 2 times the radius of the screw cross section.

2. The membrane shell shear wall skeleton according to claim 1, characterized in that: The inner wall surface of the membrane shell located on one side of the cavity has wavy or linear concave and convex parts.

3. The membrane shell shear wall skeleton according to any one of claims 1 to 2, characterized in that: The membrane shell is made of a material added with polyvinyl alcohol fiber and polyethylene fiber.

4. The membrane shell shear wall skeleton according to claim 3, characterized in that: The production formula ratio of the membrane shell is: The amount of each material in one cubic meter of concrete is expressed as follows: water: 300kg to 600kg; 52.5 grade Portland cement: 350kg to 900kg; Quartz sand: 400kg to 650kg; Basalt gravel: 0kg to 650kg; Fly ash: 0kg to 850kg; polyvinyl alcohol Fiber: 5kg to 15kg; Polyethylene fiber: 5kg to 15kg; Water reducing agent: 5kg to 15kg.

5. The membrane shell shear wall skeleton according to claim 4, characterized in that: The thickness of the membrane shell is 15 mm to 30 mm.

6. A method for manufacturing a membrane shell shear wall frame, characterized in that: Used to manufacture the membrane shell shear wall frame according to claim 1, comprising: Making a membrane shell with holes; Tie the steel frame and lay it flat in the cavity of the membrane shell; The first end of the positioning connector is fixed to the horizontal distributed steel bars in the steel skeleton, and the positioning connector includes an Ω-shaped clip, a screw and a bolt, wherein the screw passes through the screw holes at both ends of the Ω-shaped clip at the same time to achieve the fixation of the screw and the Ω-shaped clip, and the steel bars in the steel skeleton pass through the middle hole of the Ω-shaped clip to achieve the fixation of the steel skeleton and the Ω-shaped clip, and the screw also passes through the hole and extends to the outside of the membrane shell and uses the bolt to achieve the fixation of the steel skeleton and the membrane shell, the positioning connector also includes a gasket, the gasket has an internal thread corresponding to the external thread of the screw to be screwed into the screw, and the screw has an internal thread corresponding to the external thread of the bolt, the bolt is screwed into the screw to make the gasket close to the outer side of the membrane shell, the gasket is a circle with a radius R', and the relationship between it and the outer radius r of the screw and the radius R of the hole is as follows: R'>2R-r, and the radius of the hole is 1.5 to 2 times the radius of the cross section of the screw; Passing the second end of the positioning connector through the hole and fixing it to the membrane shell; After turning the whole thing over, perform the same operation on the other side to obtain the membrane shell shear wall skeleton.

Images