Formed shear wall and method of making same

Abstract

This application discloses a formwork shear wall, including a first and second formwork located on both sides, a post-cast strip and a reinforcing cage located between the first and second formworks, and a tie member passing through the reinforcing cage and fixed at both ends to the first and second formworks respectively. The tie member includes a first tie unit and a second tie unit, wherein a first end of the first tie unit is fixed to the interior of the first formwork, a first end of the second tie unit is fixed to the interior of the second formwork, and a second end of the first tie unit is engaged with the second end of the second tie unit. This formwork shear wall can improve production efficiency and quality while reducing production difficulty and costs. This application also discloses a method for manufacturing a formwork shear wall, which has the same advantages.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, and in particular relates to a formwork shear wall and its manufacturing method. Background Technology

[0002] Existing cast-in-place shear wall systems are costly to construct, waste a lot of steel, and require significant time and labor for formwork erection and dismantling, resulting in waste and damage to formwork and generating substantial construction waste. While new solutions like precast shear walls have emerged, the production process for existing precast shear wall components is cumbersome, and the corrosion resistance and toughness of ordinary steel connectors and concrete formwork are insufficient. Generally, the fabrication of shear wall formwork requires first casting a precast concrete formwork, embedding connectors within it, and then demolding and flipping it after it reaches the required strength before casting another precast concrete formwork. This existing approach is clearly inefficient and overly complex. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a molded shear wall and its manufacturing method, which can improve production efficiency and quality while reducing production difficulty and costs.

[0004] The present invention provides a formwork shear wall including a first formwork and a second formwork located on both sides, a post-cast strip and a reinforcing cage located between the first formwork and the second formwork, and further including a tie member passing through the reinforcing cage and having both ends fixed to the first formwork and the second formwork respectively. The tie member includes a first tie unit and a second tie unit, wherein a first end of the first tie unit is used to be fixed to the interior of the first formwork, a first end of the second tie unit is used to be fixed to the interior of the second formwork, and a second end of the first tie unit is engaged with the second end of the second tie unit.

[0005] Preferably, in the above-mentioned formwork shear wall, the first end of the first tie unit is used to be cast into the interior of the first formwork, and the first end of the second tie unit is used to be cast into the interior of the second formwork.

[0006] Preferably, in the above-mentioned formwork shear wall, the first tie unit includes a gasket and a screw fixed together, and is fixed by the internal thread of the gasket and the external thread of the screw, or the gasket and the screw are welded together.

[0007] Preferably, in the above-mentioned formwork shear wall, the second tie unit includes a sleeve base, and is fixed by means of a snap-fit ​​structure on the sleeve base and the screw.

[0008] Preferably, in the above-mentioned molded shear wall, through holes are also provided on the gasket and the sleeve base.

[0009] Preferably, in the above-mentioned shear wall, the end of the screw for connecting with the sleeve base has a tower-type snap-fit ​​structure, and the end of the sleeve base for connecting with the screw has a tooth structure that matches the tower-type snap-fit ​​structure. The tower-type snap-fit ​​structure is used to insert into the tooth structure to fix the screw to the sleeve base.

[0010] Preferably, in the above-mentioned molded shear wall, a gap is provided in the middle of the tower-type buckle structure on the screw.

[0011] Preferably, in the above-mentioned shear wall, the tie member is a glass fiber reinforced composite material tie member.

[0012] Preferably, in the above-mentioned formwork shear wall, the first formwork and the second formwork are cement-based formwork with PE fibers and steel fibers, and the post-cast strip is recycled concrete.

[0013] The present invention provides a method for manufacturing a molded shear wall, comprising:

[0014] Simultaneously manufacture the first mold shell and the second mold shell;

[0015] Before the first mold shell solidifies, the first end of the first tie unit is placed inside the first mold shell, and before the second mold shell solidifies, the first end of the second tie unit is placed inside the second mold shell.

[0016] Fabrication of steel reinforcement cages;

[0017] After the first mold shell and the second mold shell are reinforced, the steel cage is placed between the first mold shell and the second mold shell, and the first tie unit and the second tie unit are passed through the steel cage;

[0018] The second end of the first tie unit is snapped together with the second end of the second tie unit.

[0019] As described above, the formwork shear wall provided by this invention includes a first and second formwork located on both sides, a post-cast strip and a reinforcing cage located between the first and second formworks, and a tie member passing through the reinforcing cage and fixed at both ends to the first and second formworks respectively. The tie member includes a first tie unit and a second tie unit. The first end of the first tie unit is fixed to the interior of the first formwork, and the first end of the second tie unit is fixed to the interior of the second formwork. The second ends of the first and second tie units are snapped together. Therefore, in this case, two tie units can be fixed to the formworks simultaneously before snapping them together, saving the time of fixing one tie unit to the formwork, thereby improving production efficiency and quality, and reducing production difficulty and cost. The manufacturing method of the formwork shear wall provided by this invention has the same advantages. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 A perspective view of an embodiment of a molded shear wall provided by the present invention;

[0022] Figure 2 An exploded view of an embodiment of a molded shear wall provided by the present invention;

[0023] Figure 3 A top view of an embodiment of a molded shear wall provided by the present invention;

[0024] Figure 4 An exploded view of the tie member of an embodiment of a molded shear wall provided by the present invention;

[0025] Figure 5 A schematic diagram of the bolt of a tie member in an embodiment of a molded shear wall provided by the present invention;

[0026] Figure 6 This is a schematic diagram of an embodiment of a method for manufacturing a molded shear wall provided by the present invention. Detailed Implementation

[0027] The core of this invention is to provide a molded shear wall and its manufacturing method, which can improve production efficiency and quality, and reduce production difficulty and cost.

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] An embodiment of a formwork shear wall provided by the present invention is as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, Figure 1 This is a perspective view of an embodiment of a molded shear wall provided by the present invention. Figure 2 This is an exploded view of an embodiment of a molded shear wall provided by the present invention. Figure 3 This is a top view of an embodiment of a molded shear wall provided by the present invention. Figure 4 This is an exploded view of a tie member in an embodiment of a formwork shear wall provided by the present invention. The embodiment of the formwork shear wall may include a first formwork 1 and a second formwork 2 located on both sides, a post-cast strip 3 located between the first formwork 1 and the second formwork 2, and a reinforcing cage 4. It also includes a tie member 5 passing through the reinforcing cage 4 and having both ends fixed to the first formwork 1 and the second formwork 2 respectively. The tie member 5 includes a first tie unit 51 and a second tie unit 52. The first end of the first tie unit 51 is used to fix to the inside of the first formwork 1, and the first end of the second tie unit 52 is used to fix to the inside of the second formwork 2. The second end of the first tie unit 51 and the second end of the second tie unit 52 are engaged together.

[0030] It should be noted that the first formwork 1 and the second formwork 2 mentioned above can be, but are not limited to, cement-based formwork. Preferably, they are parallel to each other, with the distance between them equal to the designed wall thickness. This space can be filled with recycled concrete, forming the post-cast strip 3. This recycled concrete is lower in cost and more environmentally friendly. The tie member 5 mentioned above can be, but is not limited to, a glass fiber reinforced composite material tie member. This glass fiber reinforced composite material is GFRP, an existing material with high strength, light weight, corrosion resistance, and excellent durability. Its coefficient of linear expansion is similar to that of concrete, and it is lower in cost compared to other fiber materials. The toughness of this material is a better match for the shear wall of the formwork, as this type of shear wall requires high tensile strength. This GFRP tie member provides better overall consistency with the shear wall. Of course, other materials can also be selected according to actual needs; there are no restrictions here. It can be seen that the tie member 5 is a discontinuous structure, allowing the formwork on both sides to be cast simultaneously. The snap-fit ​​design makes construction more convenient; simply snap the cast formwork on both sides together, improving production efficiency and reducing production difficulty.

[0031] As described above, in the embodiments of the formwork shear wall provided by the present invention, since it includes a first formwork and a second formwork located on both sides, a post-cast strip and a reinforcing cage located between the first formwork and the second formwork, it also includes a tie member passing through the reinforcing cage and having both ends fixed to the first formwork and the second formwork respectively. The tie member includes a first tie unit and a second tie unit, wherein the first end of the first tie unit is used to be fixed to the inside of the first formwork, the first end of the second tie unit is used to be fixed to the inside of the second formwork, and the second end of the first tie unit is snapped together with the second end of the second tie unit. Therefore, in this case, two tie units can be fixed to the formwork at the same time first, and then the two tie units can be snapped together. This saves the time of fixing one tie unit to the formwork, thereby improving production efficiency and production quality, and reducing production difficulty and production cost.

[0032] In a specific embodiment of the above-mentioned formwork shear wall, the first end of the first tie unit 51 is used to be poured into the interior of the first formwork 1, and the first end of the second tie unit 52 is used to be poured into the interior of the second formwork 2. This fixing method is more secure and will not fall off, improving the integrity and connection stability, thereby better ensuring the building quality and safety, and the process is simpler and the production efficiency is higher.

[0033] In another specific embodiment of the above-mentioned formwork shear wall, the first tie unit 51 may specifically include a gasket 511 and a screw 512 fixed together, and the gasket is fixed by the internal thread of the gasket and the external thread of the screw, or the gasket and the screw are welded together. Both of these methods can ensure a more secure fixation and will not break in subsequent steps. Of course, other fixing methods can also be selected according to actual needs, which is not limited here.

[0034] In another specific embodiment of the above-mentioned formwork shear wall, the second tie unit 52 may include a sleeve base, and is fixed by connecting the sleeve base and the screw 512 with a snap-fit ​​structure. This snap-fit ​​structure makes the connection convenient, the operation very simple, and also ensures a more secure connection. Of course, other fixing methods can be selected according to actual needs, which is not limited here.

[0035] In a preferred embodiment of the above-mentioned formwork shear wall, through holes are preferably provided on the gasket 511 and the sleeve base 52. This can reduce the resistance when the two are inserted into the poured concrete, thereby facilitating fixation. The number and size of the through holes can be set according to actual needs, and are not limited here.

[0036] In another preferred embodiment of the above-described formwork shear wall, refer to Figure 5 , Figure 5 This is a schematic diagram of a tie rod for a precast shear wall according to an embodiment of the present invention. The end of the tie rod 512 for connecting to the sleeve base has a tower-type snap-fit ​​structure, and the end of the sleeve base for connecting to the tie rod has a toothed structure matching the tower-type snap-fit ​​structure. The tower-type snap-fit ​​structure is inserted into the toothed structure to fix the tie rod to the sleeve base, thus improving the fixing effect. Furthermore, a slit can preferably be opened in the middle of the tower-type snap-fit ​​structure on the tie rod to allow insertion of the sleeve base, making the connection construction of the two precast mold shells very convenient and further improving work efficiency.

[0037] In another preferred embodiment of the above-mentioned formwork shear wall, the first formwork 1 and the second formwork 2 can preferably be cement-based formworks with PE fibers and steel fibers, which have higher tensile strength and higher elastic modulus. Specifically, the mix proportion (kg / m²) 3 The composition can be further refined to include silicate cement (798.6), quartz sand (648.5), fly ash (410), water (350.6), PE fiber (11), steel fiber (8), water-reducing agent (5.1), and basalt crushed stone (12). Molds made from these materials can reduce project costs while better meeting green and environmental protection requirements.

[0038] An example of an implementation of the method for fabricating a molded shear wall provided by this invention. Figure 6 As shown, Figure 6This is a schematic diagram of an embodiment of a method for manufacturing a molded shear wall provided by the present invention. The method for manufacturing the molded shear wall may include the following steps:

[0039] S1: Simultaneously manufacture the first mold shell and the second mold shell;

[0040] S2: Before the first mold shell solidifies, place the first end of the first tie unit inside the first mold shell, and before the second mold shell solidifies, place the first end of the second tie unit inside the second mold shell.

[0041] S3: Fabricate the steel cage;

[0042] S4: After the first and second formwork shells are reinforced, the steel cage is placed between the first and second formwork shells, and the first tie unit and the second tie unit are passed through the steel cage.

[0043] S5: Connect the second end of the first tie unit to the second end of the second tie unit.

[0044] Specifically, the cement-based materials required for the mold shell are first prepared according to the specified ratio. Both mold shells are then poured simultaneously on the factory mold platform. Before the mold shells solidify, the screw gaskets and sleeve bases are inserted into the corresponding positions on both sides of the mold shells. While waiting for them to strengthen, the reinforcing cage is tied. After the mold shells reach the required strength, the reinforcing cages are placed on the mold shells, and the tie rods pass through the gaps in the reinforcing cages. Finally, the other side of the mold shell is flipped over and placed on the reinforcing cage. The screw clips are then inserted into the sleeve bases and the connection is tightened.

[0045] In summary, since the aforementioned tie-fitting component is a discontinuous structure, the two mold shells can be prefabricated simultaneously and then connected by snap-fit, making construction simpler. Compared with existing technologies, this can greatly improve production efficiency and reduce construction costs.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those 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 invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A type of molded shear wall, characterized in that, The system includes a first mold shell and a second mold shell located on both sides, a post-cast strip and a reinforcing cage located between the first mold shell and the second mold shell, and a tie member passing through the reinforcing cage and having both ends fixed to the first mold shell and the second mold shell respectively. The tie member includes a first tie unit and a second tie unit, wherein a first end of the first tie unit is used to be fixed to the inside of the first mold shell, a first end of the second tie unit is used to be fixed to the inside of the second mold shell, and a second end of the first tie unit is snapped together with a second end of the second tie unit. The first end of the first tie unit is used to be cast into the interior of the first mold shell, and the first end of the second tie unit is used to be cast into the interior of the second mold shell; The first tie unit includes a washer and a screw fixed together, and is fixed by the internal thread of the washer and the external thread of the screw, or the washer and the screw are welded together. The second tie unit includes a sleeve base, and is fixed by means of a snap-fit ​​structure on the sleeve base and the screw; The gasket and the sleeve base are also provided with through holes; The end of the screw for connecting with the sleeve base has a tower-type snap-fit ​​structure, and the end of the sleeve base for connecting with the screw has a snap-tooth structure that matches the tower-type snap-fit ​​structure. The tower-type snap-fit ​​structure is used to insert into the snap-tooth structure to fix the screw to the sleeve base. The tower-type buckle structure on the screw has a gap in the middle so that the sleeve base can be inserted; The tie member is a glass fiber reinforced composite material tie member; The first and second mold shells are cement-based mold shells with PE fibers and steel fibers, and the post-cast strip is recycled concrete with a mix proportion (kg / m²). 3 The composition is as follows: silicate cement: 798.6, quartz sand: 648.5, fly ash: 410, water: 350.6, PE fiber: 11, steel fiber: 8, water-reducing agent: 5.1, basalt crushed stone:

12.

2. A method for manufacturing a molded shear wall, characterized in that, include: Simultaneously manufacture the first mold shell and the second mold shell; Before the first mold shell solidifies, the first end of the first tie unit is placed inside the first mold shell. The first end of the first tie unit is used to pour into the interior of the first mold shell. The first tie unit includes a gasket and a screw fixed together, and is fixed by the internal thread of the gasket and the external thread of the screw, or by welding the gasket and the screw. Meanwhile, before the second mold shell solidifies, the first end of the second tie unit is placed inside the second mold shell. The first end of the second tie unit is used to pour into the interior of the second mold shell. The second tie unit includes a sleeve base, and is fixed by the snap-fit ​​structure on the sleeve base and the screw. Through holes are also provided on the gasket and the sleeve base. Fabrication of steel reinforcement cages; After the first mold shell and the second mold shell are reinforced, the steel cage is placed between the first mold shell and the second mold shell, and the first tie unit and the second tie unit are passed through the steel cage; The end of the screw for connecting with the sleeve base has a tower-type snap-fit ​​structure, and the end of the sleeve base for connecting with the screw has a tooth structure that matches the tower-type snap-fit ​​structure. The tower-type snap-fit ​​structure is used to insert into the tooth structure to fix the screw to the sleeve base, and to snap the second end of the first tie unit and the second end of the second tie unit together. The tower-type buckle structure on the screw has a gap in the middle so that the sleeve base can be inserted; The first and second mold shells are cement-based mold shells with PE fibers and steel fibers, and the post-cast strip is recycled concrete with a mix proportion (kg / m²). 3 The composition is as follows: silicate cement: 798.6, quartz sand: 648.5, fly ash: 410, water: 350.6, PE fiber: 11, steel fiber: 8, water-reducing agent: 5.1, basalt crushed stone: 12.

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