Fabricated house shear wall body connecting structure and mounting method

Abstract

The invention relates to the technical field of building construction, in particular to a fabricated residence shear wall body connecting structure and a mounting method.The fabricated residence shear wall body connecting structure comprises a lower-layer wall body and an upper-layer wall body, a plurality of grouting sleeves are arranged in the middle of the lower-layer wall body, and a plurality of first connecting steel bars are arranged on the left side and the right side of the lower-layer wall body; the grouting sleeve and the first connecting steel bar are both pre-buried in the lower-layer wall body, and the upper end of the first connecting steel bar penetrates out of the lower-layer wall body; the upper-layer wall body is of a T-shaped structure, the protruding part is provided with a plurality of inserting anchor bars corresponding to the grouting sleeves, and the left and right sides of the protruding part are provided with a plurality of second connecting steel bars; the inserting anchor bars and the second connecting steel bars are pre-buried in the upper-layer wall body, and the lower ends penetrate out of the bottom of the upper-layer wall body; through the grouting sleeve, the first connecting steel bars, the inserting anchor bars and the second connecting steel bars, a connecting mechanism of grouting sleeve connection, steel bar binding and concrete pouring is formed, and the joint strength, the anti-seismic property and the overall stability are remarkably improved in cooperation with the meshing design of the protruding blocks and the grooves.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and specifically relates to a connecting structure and installation method for shear wall walls of prefabricated houses. Background Art

[0002] In the construction of prefabricated houses, as the main load-bearing and lateral force resisting components, the structural design and installation methods of shear walls directly affect the overall performance and construction efficiency of the houses. There are some deficiencies in the traditional connection methods of shear wall structures, such as insufficient connection strength and complex construction processes, which are difficult to meet the requirements of modern buildings for high-efficiency, high-quality construction and structural stability; therefore, it is of great significance to develop a connecting structure and installation method for shear wall walls of prefabricated houses with reasonable structure, reliable connection and convenient installation. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a connecting structure and installation method for shear wall walls of prefabricated houses with reasonable structure, reliable connection and convenient installation.

[0004] The technical solution adopted by the present invention to solve its technical problems is: A connecting structure for shear wall walls of prefabricated houses includes a lower layer wall and an upper layer wall. A number of grouting sleeves are arranged in the middle of the lower layer wall, and a number of first connecting steel bars are arranged on the left and right sides; both the grouting sleeves and the first connecting steel bars are embedded in the lower layer wall, and the upper ends of the first connecting steel bars penetrate through the lower layer wall; the upper layer wall has a T-shaped structure, and a number of inserted anchor bars are arranged on the protruding part corresponding to the grouting sleeves, and a number of second connecting steel bars are arranged on the left and right sides of the protruding part corresponding to the first connecting steel bars; both the inserted anchor bars and the second connecting steel bars are embedded in the upper layer wall, and the lower ends penetrate through the bottom of the upper layer wall; during connection, the grouting sleeves are filled with bonding mortar, the inserted anchor bars are inserted into the grouting sleeves, and the first connecting steel bars are tied and fixed with the corresponding second connecting steel bars; concrete is filled outside the first connecting steel bars and the second connecting steel bars.

[0005] As a preference, a further technical solution of the present invention is: Preferably, convex blocks are arranged on the lower end surface of the protruding part of the upper layer wall, and grooves are arranged on the lower layer wall corresponding to the convex blocks.

[0006] Preferably, the length of the inserted anchor bars inserted into the grouting sleeves should be greater than or equal to 120 mm and less than or equal to 150 mm.

[0007] Preferably, the diameter of the first connecting steel bars is D1, and the length of the upper ends of the first connecting steel bars penetrating through the lower layer wall is 40 - 45 times of D1.

[0008] Preferably, the distance between adjacent grouting sleeves is 140 - 160 mm.

[0009] The present invention also discloses an installation method for shear wall walls of prefabricated houses, which is carried out by applying a connection structure for shear wall walls of prefabricated houses. The specific steps are as follows: S1, Fabrication of shear wall structure: In a precast component factory, fabricate the lower wall and the upper wall according to the design requirements. S2, Construction preparation: Transport the precast lower wall and upper wall to the construction site. At the construction site, check whether the positions and quantities of the grouting sleeves are accurate. Fix the lower wall at the preset position, and clean the top of the lower wall to ensure the surface is flat and free of debris. S3, Connection preparation: Pour bonding mortar into the grouting sleeves of the lower wall. At the same time, apply bonding mortar to the positions of the protruding parts of the upper wall corresponding to the lower wall. S4, Lifting and positioning: Use a lifting device to slowly lift the upper shear wall, move it above the lower shear wall, align the inserted anchor bars at the middle protruding part with the grouting sleeves, and then slowly lower it to preliminarily insert the inserted anchor bars into the grouting sleeves. S5, Adjustment and fixation: Use measuring instruments to measure the verticality and horizontality of the shear wall, make position adjustments according to the measurement results. After the adjustment is completed, temporarily fix the upper wall through a temporary support device to prevent it from shifting during subsequent construction. S6, Grouting operation: After the upper wall is fixed, bind and fix the second connecting steel bars with the corresponding first connecting steel bars. Then, set up a casting formwork around the first connecting steel bars and the second connecting steel bars. There are casting holes on the casting formwork. Pour concrete into the inside of the casting formwork through the casting holes. After the concrete reaches the formwork removal strength, remove the casting formwork.

[0010] The present invention adopting the above technical solution, compared with the prior art, its prominent features are: The present invention provides a connection structure and an installation method for shear wall walls of prefabricated houses. By embedding grouting sleeves and first connecting steel bars in the lower wall, and setting corresponding inserted anchor bars and second connecting steel bars at the T-shaped protruding parts of the upper wall, a connection mechanism of grouting sleeve connection, steel bar binding and concrete pouring is formed. With the engagement design of convex blocks and grooves, the joint strength, seismic performance and overall stability are significantly improved. Its installation method adopts a mode of combination of factory prefabrication and on-site assembly. Through standardized positioning, staged grouting and layered pouring processes, efficient and accurate construction is achieved, effectively solving problems such as insufficient connection strength and complex construction of traditional shear walls. It has prominent advantages such as reliable connection, convenient construction, economic and environmental protection, and is applicable to various prefabricated house construction projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1It is a schematic structural view of the lower-layer wall in the embodiment of the present invention; Figure 2 It is a schematic top view structural view of the lower-layer wall in the embodiment of the present invention; Figure 3 It is a schematic structural view of the upper-layer wall in the embodiment of the present invention; Figure 4 It is a schematic top view structural view of the upper-layer wall in the embodiment of the present invention; Figure 5 It is a schematic structural view of the connection structure of the shear wall of the prefabricated residential building in the embodiment of the present invention.

[0012] Explanation of reference numerals: 1. Lower-layer wall; 2. Grouting sleeve; 3. First connecting steel bar; 4. Groove; 5. Upper-layer wall; 6. Inserted anchor bar; 7. Second connecting steel bar; 8. Convex block; 9. Bonding mortar; 10. Concrete. Detailed implementation manners

[0013] The present invention will be further described below in conjunction with specific embodiments. The purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0014] As Figures 1 to 5 shown, this embodiment provides a connection structure for the shear wall of a prefabricated residential building, including a lower-layer wall 1 and an upper-layer wall 5. A plurality of grouting sleeves 2 are arranged in the middle of the lower-layer wall 1, and a plurality of first connecting steel bars 3 are arranged on the left and right sides; both the grouting sleeves 2 and the first connecting steel bars 3 are embedded in the lower-layer wall 1, and the upper ends of the first connecting steel bars 3 penetrate through the lower-layer wall 1 and are arranged; the upper-layer wall 5 has a T-shaped structure, and a plurality of inserted anchor bars 6 are arranged on the protruding part corresponding to the grouting sleeves 2, and a plurality of second connecting steel bars 7 are arranged on the left and right sides of the protruding part corresponding to the first connecting steel bars 3; both the inserted anchor bars 6 and the second connecting steel bars 7 are embedded in the upper-layer wall 5, and the lower ends penetrate through the bottom of the upper-layer wall 5 and are arranged; during connection, the grouting sleeves 2 are filled with bonding mortar 9, and the inserted anchor bars 6 are inserted into the grouting sleeves 2, and the inserted anchor bars 6 in the upper-layer wall 5 and the structural steel bars in the lower-layer wall 1 can be connected and fixed through the grouting sleeves 2. The first connecting steel bars 3 are tied and fixed with the corresponding second connecting steel bars 7; concrete 10 is filled outside the first connecting steel bars 3 and the second connecting steel bars 7.

[0015] To increase the stability of the connection structure between the upper-layer wall 5 and the lower-layer wall 1, a convex block 8 is arranged on the lower end surface of the protruding part of the upper-layer wall 5, and a groove 4 is arranged on the lower-layer wall 1 corresponding to the convex block 8. The top surface of the grouting sleeve 2 can be flush with the bottom surface of the groove 4 or flush with the upper edge of the groove 4; when the top surface of the grouting sleeve 2 is flush with the upper edge of the groove 4, a slot for facilitating the insertion of the grouting sleeve 2 should be correspondingly arranged on the convex block 8.

[0016] The length of the inserted anchor bar 6 inserted into the grouting sleeve 2 should be greater than or equal to 120 mm and less than or equal to 150 mm. The diameter of the first connecting steel bar 3 is D1, and the length of the upper end of the first connecting steel bar 3 penetrating out of the lower wall 1 is 40 - 45 times of D1. The spacing between adjacent grouting sleeves 2 is 140 - 160 mm.

[0017] The present invention also discloses an installation method for the shear wall of a prefabricated residential building, which is carried out by applying a connection structure for the shear wall of a prefabricated residential building. The specific steps are as follows: S1, component prefabrication: In a prefabricated component factory, using an industrial production method, the lower wall 1 and the upper wall 5 are respectively prefabricated according to the requirements of the structural design specifications, ensuring that the embedding position accuracy of the grouting sleeve 2, the inserted anchor bar 6 and the connecting steel bar meets the construction error requirement of ±2 mm.

[0018] S2, construction preparation: After transporting the prefabricated components to the construction site, first, the position of the grouting sleeve 2 is rechecked, and the total station is used for coordinate positioning verification. After confirmation, the lower wall 1 is hoisted to the designed position and temporarily fixed. Subsequently, the connection interface is cleaned to ensure that there are no impurities such as floating slurry and oil stains on the contact surface that affect the bonding strength;

[0019] S3, connection preparation: Bonding mortar 9 is poured into the grouting sleeve 2 of the lower wall 1. At the same time, bonding mortar 9 is smeared on the position of the protruding part of the upper wall 5 corresponding to the lower wall 1. The bonding mortar 9 is preferably a cement-based composite material.

[0020] S4, hoisting and positioning: Using the BIM-assisted positioning technology, the upper wall 5 is hoisted by a tower crane to a position 200 mm above the designed elevation and paused. After adjusting the posture of the component to accurately align the inserted anchor bar 6 with the grouting sleeve 2, it is slowly lowered to the designed position to ensure that the insertion depth of the inserted anchor bar 6 reaches the designed requirement of 120 - 150 mm.

[0021] S5, adjustment and fixation: Measuring instruments are used to measure the verticality and horizontality of the shear wall. According to the measurement results, the position is adjusted. After the adjustment is completed, the upper wall 5 is temporarily fixed by a temporary support device to prevent it from shifting during the subsequent construction process.

[0022] S6, grouting operation: After the grouting material begins to set, the second connecting steel bar 7 and the corresponding first connecting steel bar 3 are tied and fixed according to the specifications. Then, formwork is set around the first connecting steel bar 3 and the second connecting steel bar 7. There are pouring holes on the formwork. Concrete 10 is poured into the inner side of the formwork through the pouring holes; After the concrete 10 reaches the formwork removal strength, the formwork is removed to complete the joint construction.

[0023] The technical solution of the present invention adopts a method combining grouting sleeves 2, anchor bars, and lap joint connections of steel bars, such that the middle part of the shear wall is the sleeve anchoring connection section, and the two sides are the steel bar binding lap joint connection sections. Compared with the prior art, its beneficial effects are as follows: 1. Improve the connection strength: Through the connection of grouting sleeves 2, connecting anchor bars, and the binding connection of steel bars at both ends, the two connection methods cooperate with each other to form a reliable connection system, effectively improving the connection strength between the upper and lower shear walls and enhancing the overall structural stability of the prefabricated residence.

[0024] 2. Simplify the construction process: The installation method of the present invention has clear steps and is easy to operate. Each link in the construction process is closely connected, and the construction efficiency is relatively high, which is beneficial to ensuring the construction period.

[0025] 3. Ensure the construction quality: During the installation process, through strict measurement adjustment and quality control measures, such as the measurement of the wall verticality and levelness, the reliability of the construction quality is ensured, and the quality risk during the construction process is reduced.

[0026] The above are only the preferred embodiments that can be implemented of the present invention, and do not limit the scope of rights of the present invention accordingly. Any equivalent changes made by using the content of the specification and drawings of the present invention are included within the scope of rights of the present invention.

Claims

1. An assembled residential shear wall connection structure, characterized in that: It includes a lower-layer wall body (1) and an upper-layer wall body (5). A number of grouting sleeves (2) are arranged in the middle of the lower-layer wall body (1), and a number of first connecting steel bars (3) are arranged on the left and right sides; both the grouting sleeves (2) and the first connecting steel bars (3) are embedded in the lower-layer wall body (1), and the upper ends of the first connecting steel bars (3) penetrate through the lower-layer wall body (1); the upper-layer wall body (5) is in a T-shaped structure, and a number of inserted anchor bars (6) are arranged on the protruding part corresponding to the grouting sleeves (2), and a number of second connecting steel bars (7) are arranged on the left and right sides of the protruding part corresponding to the first connecting steel bars (3); both the inserted anchor bars (6) and the second connecting steel bars (7) are embedded in the upper-layer wall body (5), and the lower ends penetrate through the bottom of the upper-layer wall body (5). During connection, the grouting sleeve (2) is filled with bonding mortar (9), the inserted anchor bar (6) is inserted into the grouting sleeve (2), and the first connecting steel bar (3) is tied and fixed to the corresponding second connecting steel bar (7); concrete (10) is filled outside the first connecting steel bar (3) and the second connecting steel bar (7).

2. The connecting structure of the shear wall of a prefabricated residential building according to claim 1, characterized in that: A convex block (8) is arranged on the lower end surface of the protruding part of the upper-layer wall body (5), and a groove (4) is arranged on the lower-layer wall body (1) corresponding to the convex block (8).

3. The connecting structure of the shear wall of a prefabricated residential building according to claim 1, characterized in that: The length of the inserted anchor bar (6) inserted into the grouting sleeve (2) should be greater than or equal to 120 mm and less than or equal to 150 mm.

4. The connecting structure of shear wall walls of a prefabricated residence according to claim 1, wherein: The diameter of the first connecting steel bar (3) is D1, and the length of the upper end of the first connecting steel bar (3) penetrating through the lower-layer wall body (1) is 40 - 45 times of D1.

5. The connecting structure of the shear wall of a prefabricated residential building according to claim 1, characterized in that: The spacing between adjacent grouting sleeves (2) is 140 - 160 mm.

6. An installation method for shear wall walls of prefabricated houses, characterized in that, The following steps are carried out by using the assembled residential shear wall wall body connection structure described in any one of claims 1 to 5: S1, Shear wall structure manufacturing: In the precast component factory, the lower-layer wall body (1) and the upper-layer wall body (5) are manufactured according to the design requirements. S2, Construction preparation: Transport the precast lower-layer wall body (1) and upper-layer wall body (5) to the construction site. At the construction site, check whether the positions and quantities of the grouting sleeves (2) are accurate, fix the lower-layer wall body (1) at the preset position, and clean the top of the lower-layer wall body (1) to ensure that the surface is flat and free of sundries. S3, Connection preparation: Pour bonding mortar (9) into the grouting sleeve (2) of the lower-layer wall body (1). At the same time, apply bonding mortar (9) to the position of the lower-layer wall body (1) corresponding to the protruding part of the upper-layer wall body (5). S4, Lifting and positioning: Use a lifting device to slowly lift the upper shear wall, move it above the lower shear wall, align the inserted anchor bars (6) of the middle protruding part with the grouting sleeves (2), and then slowly lower it to make the inserted anchor bars (6) be initially inserted into the grouting sleeves (2). S5, Adjustment and fixation: Use measuring instruments to measure the verticality and horizontality of the shear wall, make position adjustment according to the measurement results. After the adjustment is completed, temporarily fix the upper-layer wall body (5) through a temporary support device to prevent it from displacing during the subsequent construction process. S6, Grouting operation: After the upper-layer wall (5) is fixed, tie and fix the second connecting steel bar (7) to the corresponding first connecting steel bar (3). Then, formwork for pouring is arranged around the first connecting steel bar (3) and the second connecting steel bar (7). Pouring holes are provided on the formwork for pouring, and concrete (10) is poured into the inner side of the formwork for pouring through the pouring holes. After the concrete (10) reaches the formwork removal strength, remove the formwork for pouring.

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