Fabricated double-sided laminated shear wall component and mounting process

Abstract

The invention discloses an assembly type double-faced laminated shear wall component and an installation technology, and relates to the technical field of building construction, the assembly type double-faced laminated shear wall component comprises a prefabricated wall panel, a connecting assembly is arranged in the prefabricated wall panel, the connecting assembly comprises a vertical steel bar, and the outer side of the vertical steel bar is fixedly connected with a connecting steel bar; a pawl groove is formed in the outer side of the vertical steel bar, and a mounting groove is formed in one side of the prefabricated wall plate. According to the assembly type double-faced laminated shear wall component and the mounting process, a steel reinforcement framework composed of vertical steel bars and connecting steel bars is inserted into horizontal steel bars, the conical ends of the vertical steel bars extrude pawls to move into mounting grooves, springs are compressed at the same time, and when the vertical steel bars continuously move downwards to pawl grooves and are located at the same position with the pawls, the pawls are clamped; under the action of elastic force of the spring, the pawl is bounced into the pawl groove, rapid installation of the steel reinforcement framework and the horizontal steel bars is achieved, and compared with traditional manual binding, the installation efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of building construction, and in particular to a prefabricated double-sided composite shear wall component and its installation process. Background Technology

[0002] Shear walls are vertical structural members in building structures used to bear horizontal and vertical loads. They are usually made of reinforced concrete or steel-concrete composite materials, and have high stiffness and strength. They can effectively resist horizontal shear deformation and overturning moment, thereby enhancing the overall stability and seismic performance of the building. They are an indispensable key structural component in high-rise buildings and important public buildings.

[0003] Existing prefabricated shear walls are mainly divided into two types: fully prefabricated and single-sided composite. Although fully prefabricated shear walls reduce on-site casting, they require high precision of components and complex on-site node connections, which increases costs and transportation difficulties, and also poses structural safety risks. Single-sided composite shear walls require on-site formwork and casting, which still involves formwork work, increases labor costs and procedures, and can easily lead to deviations in wall flatness. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated double-sided composite shear wall component, comprising a prefabricated wall panel, wherein a connecting component is provided inside the prefabricated wall panel; The connecting assembly includes a vertical reinforcing bar, a connecting reinforcing bar fixedly connected to the outside of the vertical reinforcing bar, a pawl groove formed on the outside of the vertical reinforcing bar, an installation groove formed on one side of the precast wall panel, a rotating shaft rotatably connected inside the installation groove, a pawl fixedly connected to the outside of the rotating shaft, and a spring fixedly connected to the outside of the pawl.

[0005] Preferably, the precast wall panel has horizontal reinforcing bars installed on its outer side in a U-shape, and the number of horizontal reinforcing bars is not less than five and they are distributed at equal intervals.

[0006] Preferably, the number of vertical reinforcing bars is four and they are centrally symmetrically distributed. The connecting reinforcing bars are used to connect the four vertical reinforcing bars. The connecting reinforcing bars are distributed at equal intervals from top to bottom and there are no less than five layers. The bottom of the vertical reinforcing bars is tapered and placed inside the horizontal reinforcing bars.

[0007] Preferably, the vertical reinforcing bar has a pawl groove adapted to the pawl on the side near the precast wall panel, and the number of pawl grooves is not less than five and they are distributed at equal intervals.

[0008] Preferably, the mounting groove is formed on the side of the precast wall panel near the horizontal reinforcing bar, the number of mounting grooves corresponds one-to-one with the number of pawl grooves, and the side of the spring away from the pawl is fixedly connected to the inner wall of the mounting groove.

[0009] On the other hand, the installation process of a prefabricated double-sided composite shear wall component provided in this application includes the following steps: S1, measurement and layout: mark the wall positioning control line and elevation control line on the base layer or structural slab surface, and check the reserved position for inserting vertical steel bars; S2. Wall panel hoisting: Use lifting equipment to hoist the prefabricated wall panel to the installation position, and adjust and fix its verticality and horizontal position by using diagonal supports; S3. Vertical reinforcement installation: The prefabricated vertical reinforcement skeleton, that is, the whole composed of the vertical reinforcement and the connecting reinforcement, is lowered into the cavity formed between two adjacent prefabricated wall panels, ensuring that the pawl groove on the vertical reinforcement corresponds to the pawl position on the prefabricated wall panel, and the vertical reinforcement is lowered until the pawl is engaged in the pawl groove under the action of the spring, thus completing the mechanical locking. S4. Vertical cast-in-place formwork: Install vertical temporary formwork on the side of the cavity and seal the base of the wall; S5. Inspection and Acceptance: Inspect the installation position and verticality of the wall panels, as well as the sealing of the temporary formwork. After acceptance, pour concrete into the cavity to form an integral double-sided composite shear wall. Preferably, in step S2, the inclined support includes a long inclined support and a short inclined support. One end of the long inclined support and the short inclined support are hinged to the reserved connecting parts on the precast wall panel through embedded parts, and the other end is fixed to the floor through expansion bolts or connecting parts. The position of the precast wall panel can be finely adjusted by rotating the adjusting sleeve on the support rod.

[0010] Preferably, step S4 specifically includes: S4.1, template installation: according to the position of the tie bolt holes pre-reserved at the end of the precast wall panel, a vertical temporary template is installed, and the temporary template is fixed and reinforced by tie bolts inserted into the tie bolt holes; S4.2 Sealing treatment: Sponge sealing strips are pre-attached to the contact surface between the temporary template and the precast wall panel to prevent grout leakage during concrete pouring; S4.3, Template placement: The temporary template can be pre-processed and assembled on the ground, and then hoisted into place using lifting equipment; S4.4 Root sealing: At the root of the wall between the precast wall panel and the floor, a special sealing material or mortar is used to seal it. The precast wall panel and the temporary template together form a closed cavity with an open top. S4.5 Concrete pouring: Pouring concrete into a closed cavity.

[0011] Preferably, in step S4.5, it is necessary to ensure that the erection and sealing of the temporary formwork and the installation and connection of the vertical reinforcement are completed and accepted; the method of layered pouring and layered vibration is adopted, and the concrete pouring points should be evenly distributed; the concrete should be poured continuously, and the height of each layer should not exceed 1000mm; a Φ30 small-diameter vibrator should be used for vibration, and when vibrating the upper layer of concrete, the vibrator should be inserted into the lower layer of concrete for no less than 50mm; the moving distance of the vibrator should not be greater than 400mm, and the duration of each vibration point is based on the standard that the surface shows slurry and no longer settles.

[0012] In summary, the present invention provides a prefabricated double-sided composite shear wall component and its installation process, which has the following beneficial effects: 1. This prefabricated double-sided composite shear wall component and its installation process involve inserting a steel reinforcement cage composed of vertical and connecting steel bars into horizontal steel bars. The tapered ends of the vertical steel bars press the pawls to move into the installation groove while compressing the spring. When the vertical steel bars continue to move down until the pawl groove and the pawl are in the same position, the spring force propels the pawls into the pawl groove, achieving rapid installation of the steel reinforcement cage and horizontal steel bars. Compared with traditional manual binding, this greatly improves installation efficiency.

[0013] 2. This prefabricated double-sided composite shear wall component and its installation process, by prefabricating precast wall panels according to the design specifications in a prefabrication plant, assembling them on site, and then pouring concrete for the wall, improves construction efficiency and economic benefits to a certain extent. The double-sided composite precast wall panels combine the advantages of fast construction speed of precast structures and good integrity of cast-in-place structures. The precast part not only largely replaces the formwork of the cast-in-place part, but also provides a certain structural strength for the overall shear wall structure, provides an operating platform for subsequent structural construction, and reduces the pressure on the support system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation structure of the present invention; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is a partial structural diagram of the connection between the vertical reinforcing bars and the connecting reinforcing bars in this invention; Figure 4 This is a partial structural diagram of the mounting groove of the present invention; Figure 5 This is a flowchart illustrating the overall process of this invention. Figure 6 This is a flowchart illustrating the specific process of step S4 of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Precast wall panel; 101. Horizontal reinforcement; 2. Connecting component; 201. Vertical reinforcement; 202. Connecting reinforcement; 203. Pawl groove; 204. Mounting groove; 205. Shaft; 206. Pawl; 207. Spring. Detailed Implementation

[0016] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Example 1 Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A prefabricated double-sided composite shear wall component includes a prefabricated wall panel 1, and a connecting component 2 is provided inside the prefabricated wall panel 1; The connecting component 2 includes a vertical steel bar 201, a connecting steel bar 202 fixedly connected to the outside of the vertical steel bar 201, a ratchet groove 203 opened on the outside of the vertical steel bar 201, an installation groove 204 opened on one side of the precast wall panel 1, a rotating shaft 205 rotatably connected inside the installation groove 204, a ratchet 206 fixedly connected to the outside of the rotating shaft 205, and a spring 207 fixedly connected to the outside of the ratchet 206.

[0018] The outer side of the precast wall panel 1 is equipped with horizontal steel bars 101 in a U-shape design. The number of horizontal steel bars 101 is not less than five and they are distributed at equal intervals.

[0019] By setting no fewer than five U-shaped horizontal steel bars 101 distributed at equal intervals, a stable installation guide and initial support are provided for the vertical steel bars 201, ensuring the accuracy of the steel bar cage positioning. At the same time, its U-shaped design provides a good gripping space for subsequent concrete pouring, enhancing the overall integrity of the structure.

[0020] There are four vertical reinforcing bars 201, which are centrally symmetrically distributed. The connecting reinforcing bars 202 are used to connect the four vertical reinforcing bars 201. The connecting reinforcing bars 202 are distributed at equal intervals from top to bottom and there are no less than five layers. The bottom of the vertical reinforcing bars 201 is tapered and placed inside the horizontal reinforcing bars 101.

[0021] A stable spatial load-bearing skeleton is formed by a centrally symmetrical steel cage consisting of four vertical steel bars 201 and multiple layers of connecting steel bars 202. The conical design at the bottom of the vertical steel bars 201 allows them to be smoothly inserted and compressed into the pawl 206, which greatly simplifies the installation and alignment process and improves construction efficiency.

[0022] The vertical reinforcing bar 201 has a ratchet groove 203 adapted to the ratchet 206 on the side near the precast wall panel 1. The number of ratchet grooves 203 is not less than five and they are distributed at equal intervals.

[0023] By opening multiple pawl grooves 203 with equal spacing on the side of the vertical steel bar 201 near the wall panel, forming a multi-level mechanical locking point with the pawl 206, the connection contact area is significantly increased, the node stress is effectively dispersed, stress concentration is avoided, and the reliability and load-bearing capacity of the connection are greatly improved.

[0024] The mounting groove 204 is opened on the side of the precast wall panel 1 near the horizontal steel bar 101. The number of mounting grooves 204 corresponds one-to-one with the number of pawl grooves 203. The side of the spring 207 away from the pawl 206 is fixedly connected to the inner wall of the mounting groove 204.

[0025] By setting the mounting slot 204 and the ratchet slot 203 in a one-to-one correspondence, and using the spring 207 to provide continuous pre-pressure for the ratchet 206, it is ensured that the ratchet 206 can automatically and accurately engage in the ratchet slot 203, realizing self-locking and tool-free operation in the connection process, simplifying the construction steps, and eliminating the need for manual binding of the vertical steel bar 201 and the horizontal steel bar 101.

[0026] The vertical reinforcing bar 201 is guided by a tapered design at its bottom, and the pawl 206 is automatically engaged in the pawl groove 203 on the vertical reinforcing bar 201 by a spring 207. This achieves a fast and reliable mechanical connection between the vertical reinforcing bar 201 and the horizontal reinforcing bar 101 on the precast wall panel 1, completely eliminating the need for traditional manual binding operations and greatly improving installation efficiency. At the same time, multiple pawls 206 distributed at equal intervals at the top and bottom form a multi-level locking system with the pawl groove 203. This system works in conjunction with the U-shaped horizontal reinforcing bar 101 and the spatial reinforcing cage bound by the connecting reinforcing bars 202, significantly enhancing the load-bearing capacity and stress distribution uniformity of the joint, effectively avoiding stress concentration, and ensuring the structural integrity and seismic performance of the shear wall.

[0027] Example 2 Please see Figure 5 and Figure 6 An installation process for a prefabricated double-sided composite shear wall component includes the following steps: S1, measurement and layout: mark the wall positioning control line and elevation control line on the base layer or structural slab surface, and verify the position of the reserved vertical reinforcement 201; S2. Wall panel hoisting: Use lifting equipment to hoist the precast wall panel 1 to the installation position, and adjust and fix its verticality and horizontal position through diagonal supports; S3. Vertical reinforcement installation: The prefabricated vertical reinforcement skeleton, that is, the whole composed of vertical reinforcement 201 and connecting reinforcement 202, is lowered into the cavity formed between two adjacent prefabricated wall panels 1. Ensure that the pawl groove 203 on the vertical reinforcement 201 corresponds to the pawl 206 on the prefabricated wall panel 1. Lower the vertical reinforcement 201 until the pawl 206 is engaged in the pawl groove 203 under the action of the spring 207 to complete the mechanical locking. S4. Vertical cast-in-place formwork: Install vertical temporary formwork on the side of the cavity and seal the base of the wall; S5. Inspection and Acceptance: Inspect the installation position, verticality, and sealing of the temporary formwork of the wall panels. After acceptance, pour concrete into the cavity to form an integral double-sided composite shear wall.

[0028] In step S2, the diagonal support includes a long diagonal support and a short diagonal support. One end of the long diagonal support and the short diagonal support are hinged to the reserved connecting parts on the precast wall panel 1 through embedded parts, and the other end is fixed to the floor through expansion bolts or connecting parts. The position of the precast wall panel 1 can be finely adjusted by rotating the adjusting sleeve on the support rod.

[0029] Step S4 specifically includes: S4.1, Template installation: According to the position of the tie bolt holes pre-reserved at the end of the precast wall panel 1, install the vertical temporary template. The temporary template is fixed and reinforced by tie bolts inserted into the tie bolt holes. S4.2 Sealing treatment: Sponge sealing strips are pre-attached to the contact surface between the temporary formwork and the precast wall panel 1 to prevent grout leakage during concrete pouring; S4.3 Formwork placement: Temporary formwork can be prefabricated and assembled on the ground, and then hoisted into place using lifting equipment; S4.4 Root sealing: At the root of the wall between the precast wall panel 1 and the floor, a special sealing material or mortar is used to seal it, and the precast wall panel 1 and the temporary formwork together form a closed cavity with an open top. S4.5 Concrete pouring: Pouring concrete into a closed cavity.

[0030] In step S4.5, it is necessary to ensure that the temporary formwork is erected and sealed, and the vertical reinforcement 201 is installed and connected, and that all are completed and accepted. The method of layered pouring and layered vibration should be adopted, and the concrete pouring points should be evenly distributed. The concrete should be poured continuously, and the height of each layer should not exceed 1000mm. A small-diameter vibrator with a diameter of Φ30 should be used for vibration. When vibrating the upper layer of concrete, the vibrator should be inserted into the lower layer of concrete for no less than 50mm. The distance between the vibrator movements should not exceed 400mm, and the duration of each vibration point should be based on the standard that the surface shows a layer of slurry and no longer settles.

[0031] The specific implementation method based on the standard of surface laitance and no further settling is as follows: The operator holds a Φ30 vibrator and vertically inserts it into the concrete vibration point. After turning on the vibrator, observe the changes on the concrete surface at that point. When the cement slurry, i.e., laitance, is evenly raised to the surface, covering the aggregate and forming a smooth slurry layer, and at the same time the concrete in this area no longer settles and no significant air bubbles escape from the surface, it indicates that the concrete at that point has been fully compacted. At this time, the vibrator should be slowly pulled out immediately and moved to the next vibration point. The duration of each vibration point is usually controlled at about 20 to 30 seconds. The specific duration needs to be finely adjusted according to on-site factors such as concrete slump and pouring thickness to avoid over-vibration that could cause aggregate settling and slurry separation.

[0032] In use, the first step is to measure and lay out the lines at the construction site, mark the wall positioning control lines, and verify the position of the lower-level reserved reinforcing bars. Then, the wall panels are hoisted. Using lifting equipment, the precast wall panel 1 is lifted into place, and its vertical and horizontal positions are precisely controlled by adjustable diagonal supports. Next, the core vertical reinforcing bars are installed. The precast reinforcing bar skeleton, composed of vertical reinforcing bars 201 and connecting reinforcing bars 202, is lowered into the cavity between adjacent precast wall panels 1. The tapered design at the bottom of the vertical reinforcing bars 201 guides their insertion. When the pawls on them... When the slot 203 is aligned with the pawl 206 driven by the rotating shaft 205 and the spring 207 in the side mounting slot 204 of the precast wall panel 1, the pawl 206 automatically engages with the pawl slot 203 under the action of the spring 207 to complete the mechanical locking. Then, the vertical cast-in-place formwork is erected, and the temporary template is installed using the reserved hole at the end of the precast wall panel 1 and the root is sealed to form a closed cavity. Finally, after inspection and acceptance, concrete is poured into the cavity in layers and vibrated to compact it, so that the precast wall panel 1, the mechanical connection node and the cast-in-place concrete are combined into a whole double-sided composite shear wall.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated double-sided composite shear wall component, comprising prefabricated wall panels (1), characterized in that: The prefabricated wall panel (1) is provided with a connecting component (2) inside; The connecting assembly (2) includes a vertical steel bar (201), a connecting steel bar (202) is fixedly connected to the outside of the vertical steel bar (201), a pawl groove (203) is provided on the outside of the vertical steel bar (201), an installation groove (204) is provided on one side of the precast wall panel (1), a rotating shaft (205) is rotatably connected inside the installation groove (204), a pawl (206) is fixedly connected to the outside of the rotating shaft (205), and a spring (207) is fixedly connected to the outside of the pawl (206).

2. A prefabricated double-sided composite shear wall component according to claim 1, characterized in that: The precast wall panel (1) is equipped with horizontal steel bars (101) on the outside and is designed in a U-shape. The number of horizontal steel bars (101) is not less than five and they are distributed at equal intervals.

3. A prefabricated double-sided composite shear wall component according to claim 1, characterized in that: The number of vertical reinforcing bars (201) is four and they are centrally symmetrically distributed. The connecting reinforcing bars (202) are used to connect the four vertical reinforcing bars (201). The connecting reinforcing bars (202) are distributed at equal intervals from top to bottom and there are no less than five layers. The bottom of the vertical reinforcing bars (201) is tapered and placed inside the horizontal reinforcing bars (101).

4. A prefabricated double-sided composite shear wall component according to claim 1, characterized in that: The vertical reinforcing bar (201) has a pawl groove (203) adapted to the pawl (206) on the side near the precast wall panel (1). The number of pawl grooves (203) is not less than five and they are distributed at equal intervals.

5. A prefabricated double-sided composite shear wall component according to claim 1, characterized in that: The mounting groove (204) is opened on the side of the precast wall panel (1) near the horizontal steel bar (101). The number of mounting grooves (204) corresponds one-to-one with the number of pawl grooves (203). The side of the spring (207) away from the pawl (206) is fixedly connected to the inner wall of the mounting groove (204).

6. The installation process of a prefabricated double-sided composite shear wall component according to claim 1 is applicable to a prefabricated double-sided composite shear wall component according to any one of claims 1-5, characterized in that, Includes the following steps: S1. Measurement and layout: Mark the wall positioning control line and elevation control line on the base layer or structural slab surface, and check the reserved position for inserting vertical steel bars (201); S2, Wall panel hoisting: Use lifting equipment to hoist the precast wall panel (1) to the installation position, and adjust and fix its verticality and horizontal position by using diagonal supports; S3. Vertical reinforcement installation: The prefabricated vertical reinforcement skeleton, that is, the whole consisting of the vertical reinforcement (201) and the connecting reinforcement (202), is lowered into the cavity formed between two adjacent prefabricated wall panels (1), ensuring that the pawl groove (203) on the vertical reinforcement (201) corresponds to the pawl (206) on the prefabricated wall panel (1), and the vertical reinforcement (201) is lowered until the pawl (206) is engaged in the pawl groove (203) under the action of the spring (207) to complete the mechanical locking; S4. Vertical cast-in-place formwork: Install vertical temporary formwork on the side of the cavity and seal the base of the wall; S5. Inspection and Acceptance: Inspect the installation position, verticality, and sealing of the temporary formwork of the wall panels. After acceptance, pour concrete into the cavity to form an integral double-sided composite shear wall.

7. The installation process of a prefabricated double-sided composite shear wall component according to claim 6, characterized in that: In step S2, the inclined support includes a long inclined support and a short inclined support. One end of the long inclined support and the short inclined support are hinged to the reserved connecting parts on the precast wall panel (1) through embedded parts, and the other end is fixed to the floor through expansion bolts or connecting parts. The position of the precast wall panel (1) can be finely adjusted by rotating the adjusting sleeve on the support rod.

8. The installation process of a prefabricated double-sided composite shear wall component according to claim 6, characterized in that: The specific steps S4 include: S4.1, template installation: according to the position of the tie bolt holes pre-reserved at the end of the precast wall panel (1), a vertical temporary template is installed, and the temporary template is fixed and reinforced by tie bolts inserted into the tie bolt holes; S4.2 Sealing treatment: Sponge sealing strips are pre-attached to the contact surface between the temporary template and the precast wall panel (1) to prevent grout leakage during concrete pouring; S4.3, Template placement: The temporary template can be pre-processed and assembled on the ground, and then hoisted into place using lifting equipment; S4.4, Root sealing: At the root of the wall between the precast wall panel (1) and the floor, a special sealing material or mortar is used to seal it. The precast wall panel (1) and the temporary template together form a closed cavity with an open top. S4.5 Concrete pouring: Pouring concrete into a closed cavity.

9. The installation process of a prefabricated double-sided composite shear wall component according to claim 6, characterized in that: In step S4.5, it is necessary to ensure that the temporary formwork is erected and sealed, and the vertical steel bars (201) are installed and connected, and that they are accepted as qualified. The method of layered pouring and layered vibration should be adopted, and the concrete pouring points should be evenly distributed. The concrete should be poured continuously, and the height of each layer should not exceed 1000mm. A small diameter vibrator of Φ30 should be used for vibration. When vibrating the upper layer of concrete, the vibrator should be inserted into the lower layer of concrete for no less than 50mm. The distance between the vibrator movements should not be greater than 400mm, and the duration of each vibration point should be based on the surface showing slurry and no longer settling.

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