Soft cable connection shear wall structure and construction method thereof

Abstract

The invention discloses a soft cable connection shear wall structure and a construction method thereof, and belongs to the technical field of building construction. The structure comprises a first prefabricated shear wall and a second prefabricated shear wall, anchoring steel bars are embedded in the wall bodies respectively, steel strands extend out of the wall bodies, a steel connecting box is arranged between the two walls, and the two sides of the steel connecting box are connected with the steel strands through connecting parts respectively to achieve horizontal connection; reserved joint bar holes are formed in the steel connecting box, and the steel connecting box is connected with a lower-layer shear wall in a penetrating and inserting mode, so that vertical connection is achieved. During construction, a wall body is hoisted firstly, then the steel connecting box is installed, the steel twisted rope is adjusted, and after joint bars are arranged in a penetrating mode, a formwork is erected and concrete is poured. According to the invention, the flexible steel strand rope is adopted to replace the traditional reinforcement, so that the problem of reinforcement deformation during transportation and hoisting is avoided, and rapid visual installation is realized; meanwhile, horizontal connection and vertical connection are integrated in the same structural area, on-site wet operation is reduced, the construction period is shortened, and the method is suitable for efficient and reliable connection of prefabricated shear walls in fabricated buildings.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a soft cable-connected shear wall structure and its construction method. Background Technology

[0002] In the field of prefabricated buildings, the vertical connection of precast shear walls is a crucial step in ensuring the overall structural performance. Currently, common vertical connection methods for prefabricated shear walls mainly include grouted sleeve connections, EMC corrugated pipe connections, mechanical connections, and welding connections. However, these connection methods have the following technical problems in practical applications:

[0003] First, existing connection methods usually require shear wall components to extend the connecting steel bars laterally, i.e., "exposed bars". These extended steel bars are very prone to bending and deformation during the transportation and hoisting of precast components, which makes it impossible to accurately align them on site. They must be corrected or reworked, which seriously affects construction efficiency and component quality.

[0004] Secondly, when using grouting sleeves or corrugated pipes for connection, a small amount of steel reinforcement lapping or welding work is often still required on site. In addition, the post-pouring strip area is large, and the formwork needs to be re-erected, which not only increases the workload of wet work on site, but also extends the construction period.

[0005] Therefore, providing a new type of shear wall structure and its construction method that can simplify the production of prefabricated components, facilitate transportation, enable rapid and visual on-site construction, and ensure reliable connection is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of this invention is to provide a solution.

[0007] The technical solution adopted by this invention to solve its technical problem is:

[0008] A soft cable connected shear wall structure includes a first precast shear wall and a second precast shear wall. A first anchoring steel bar is pre-embedded inside the first precast shear wall. A first steel strand extends from the side of the first precast shear wall, and one end of the first steel strand is wound around and fixed to the first anchoring steel bar.

[0009] The second precast shear wall has a second anchoring steel bar embedded inside, and a second steel strand extends from the side of the second precast shear wall. One end of the second steel strand is wound around and fixed to the second anchoring steel bar.

[0010] A steel connecting box is provided between the first precast shear wall and the second precast shear wall. The steel connecting box has a first connecting part and a second connecting part on opposite sides. The first connecting part is connected to the first steel strand, and the second connecting part is connected to the second steel strand. The steel connecting box also has reserved insertion holes that pass through its upper and lower ends. Insertion bars are inserted into the reserved insertion holes, and the insertion bars are connected to the insertion bars of the lower shear wall through connecting sleeves.

[0011] Furthermore, both the first and second connecting parts are wire rope tensioners, used to lock the first and second steel strands respectively; during on-site installation, the tension of the steel strands can be flexibly adjusted according to the actual positional deviation of the wall to achieve a tight connection between the steel connecting box and the precast wall, thereby improving the adaptability and convenience of installation.

[0012] Furthermore, the wire rope tensioner includes a locking ring with internally threaded holes on both sides, and a first screw and a second screw are screwed onto each side. The other end of the first screw is fixedly connected to a steel connecting box, and the other end of the second screw is fixedly connected to a connecting ring, which is connected to the steel strand. By rotating the locking ring, the tension of the steel strand can be precisely adjusted, ensuring balanced force after connection and allowing for fine-tuning of the relative positions between walls during installation, thus enhancing the structure's fault tolerance on the construction site.

[0013] Furthermore, corrugated pipes are pre-embedded at the bottom of the first and second precast shear walls, and reinforcing bars extending from the top of the walls are also pre-embedded at the top; this facilitates the hoisting and connection of the upper and lower shear walls.

[0014] A construction method for a cable-stayed shear wall structure includes the following steps:

[0015] S1. Precast the first precast shear wall and the second precast shear wall. During the precasting process, one end of the first steel strand is wound around the first anchoring steel bar and fixed by the tightening sleeve, and one end of the second steel strand is wound around the second anchoring steel bar and fixed by the tightening sleeve. The other ends of the first steel strand and the second steel strand extend out of the side of the corresponding wall.

[0016] S2. Complete the top leveling work of the lower shear wall and ensure that the position of the pre-reserved connecting sleeve at the top of the lower shear wall and the upper side reinforcement of the wall is accurate;

[0017] The first and second precast shear walls are hoisted above the lower shear wall respectively, so that the corrugated pipes embedded at the bottom of the first and second precast shear walls are accurately positioned with the upper side reinforcement bars of the lower shear wall. After adjusting the verticality of the wall, temporary support and fixation are performed.

[0018] S3. Place the steel connecting box between the first precast shear wall and the second precast shear wall, connect the first connecting part on the steel connecting box to the protruding end of the first steel strand, and connect the second connecting part on the steel connecting box to the protruding end of the second steel strand. Rotate the locking rings of the first connecting part and the second connecting part respectively to achieve the horizontal connection between the first precast shear wall and the second precast shear wall.

[0019] S4. Pass the reserved reinforcing bars through the reserved reinforcing bar holes on the steel connection box from top to bottom, and connect them to the reserved reinforcing bars at the top of the lower shear wall through the connecting sleeve.

[0020] S5. Formwork is provided for the connection area between the first precast shear wall and the second precast shear wall to form a space for the post-cast strip.

[0021] S6. Pour concrete into the pouring space of the back pouring strip and into the corrugated pipes at the bottom of the first and second precast shear walls to complete the connection construction of the upper and lower shear walls and the adjacent walls.

[0022] The present invention, which adopts the above technical solution, has the following prominent features compared with the prior art:

[0023] This invention achieves horizontal connection between walls by pre-embedding anchoring steel bars inside the first and second precast shear walls and connecting them with steel strands extending from the walls, in conjunction with steel connecting boxes with connecting parts on both sides. Since the steel strands are flexible components, they are less prone to permanent deformation during prefabrication, transportation, and hoisting, effectively avoiding the problems of steel bar bending and alignment difficulties in traditional reinforcement methods. This reduces the risk of on-site correction or rework, and improves construction efficiency and component quality. Simultaneously, pre-reserved insertion holes on the steel connecting boxes are used to insert reinforcing bars, which are connected to pre-reserved insertion bars in the lower shear wall via connecting sleeves. This allows vertical and horizontal connections to be completed collaboratively within the same structural area, simplifying on-site construction procedures and shortening the construction cycle. This structure, while ensuring connection reliability, achieves a flexible reinforcement design for precast components, facilitating production, transportation, and rapid on-site installation. Attached Figure Description

[0024] Fig. 1 This is a top view of the structure according to an embodiment of the present invention;

[0025] Fig. 2 This is a side view structural diagram of an embodiment of the present invention;

[0026] Fig. 3 This is a schematic diagram of the main structure of the wire rope tensioner in an embodiment of the present invention;

[0027] Explanation of reference numerals in the attached drawings: 1. First precast shear wall; 2. Second precast shear wall; 3. First anchoring reinforcement; 4. First steel strand; 5. Second anchoring reinforcement; 6. Second steel strand; 7. Tightening sleeve; 8. Steel connecting box; 9. First connecting part; 10. Second connecting part; 11. Inserted reinforcement; 12. Corrugated pipe; 13. Outlet reinforcement; 14. Connecting sleeve; 15. Locking ring; 16. First threaded rod; 17. Second threaded rod; 18. Connecting ring. Detailed Implementation

[0028] The present invention will be further illustrated below with reference to specific embodiments. The purpose of this illustration is solely to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0029] like Figs. 1 to 3 As shown, this embodiment provides a soft cable connected shear wall structure, including a first precast shear wall 1 and a second precast shear wall 2. A first anchoring steel bar 3 is pre-embedded inside the first precast shear wall 1. A first steel strand 4 extends from the side of the first precast shear wall 1. One end of the first steel strand 4 is wound around and fixed to the first anchoring steel bar 3.

[0030] The second precast shear wall 2 has a second anchoring steel bar 5 embedded inside, and a second steel strand 6 extends out from the side of the second precast shear wall 2. One end of the second steel strand 6 is wound around and fixed to the second anchoring steel bar 5.

[0031] A steel connecting box 8 is provided between the first precast shear wall 1 and the second precast shear wall 2. A first connecting part 9 and a second connecting part 10 are respectively provided on opposite sides of the steel connecting box 8. The first connecting part 9 is connected to the first steel strand 4, and the second connecting part 10 is connected to the second steel strand 6. The steel connecting box 8 is also provided with a reserved insertion bar hole that passes through its upper and lower end faces. Insertion bars 11 are inserted into the reserved insertion bar hole, and the insertion bars 11 are connected to the insertion bars of the lower shear wall through the connecting sleeve 14.

[0032] Both the first connecting part 9 and the second connecting part 10 are wire rope tensioners, used to lock the first steel strand 4 and the second steel strand 6 respectively. During on-site installation, the tension of the steel strands can be flexibly adjusted according to the actual positional deviation of the wall to achieve a tight connection between the steel connecting box 8 and the precast wall, thereby improving the adaptability and convenience of installation.

[0033] The wire rope tensioner includes a locking ring 15. Internal threaded holes are provided on both sides of the locking ring 15, and a first lead screw 16 and a second lead screw 17 are screwed onto each side. The other end of the first lead screw 16 is fixedly connected to a steel connecting box 8, and the other end of the second lead screw 17 is fixedly connected to a connecting ring 18, which is then connected to the steel strand. By rotating the locking ring 15, the tension of the steel strand can be precisely adjusted, ensuring balanced force after connection and allowing for fine-tuning of the relative positions between walls during installation, thus enhancing the structure's fault tolerance on the construction site.

[0034] The bottom of the first precast shear wall 1 and the second precast shear wall 2 are respectively embedded with corrugated pipes 12, and the top is also embedded with a top-end protruding bar 13 extending from the upper side of the wall; to facilitate the hoisting and docking of the upper and lower shear walls.

[0035] A construction method for a cable-stayed shear wall structure includes the following steps:

[0036] S1. Precast the first precast shear wall 1 and the second precast shear wall 2. During the precasting process, one end of the first steel strand 4 is wound around the first anchoring steel bar 3 and fixed by the tightening sleeve 7. One end of the second steel strand 6 is wound around the second anchoring steel bar 5 and fixed by the tightening sleeve 7. The other ends of the first steel strand 4 and the second steel strand 6 extend out of the side of the corresponding wall.

[0037] S2. Complete the top leveling work of the lower shear wall and ensure that the position of the pre-reserved connecting sleeve at the top of the lower shear wall and the upper side reinforcement 13 of the wall are accurate.

[0038] The first precast shear wall 1 and the second precast shear wall 2 are respectively hoisted above the lower shear wall, so that the corrugated pipe 12 embedded at the bottom of the first precast shear wall 1 and the second precast shear wall 2 are accurately positioned with the upper wall reinforcement 13 at the top of the lower shear wall, and the wall verticality is adjusted before temporary support and fixation are performed.

[0039] S3. Place the steel connecting box 8 between the first precast shear wall 1 and the second precast shear wall 2. Connect the first connecting part 9 on the steel connecting box 8 to the extended end of the first steel strand 4, and connect the second connecting part 10 on the steel connecting box 8 to the extended end of the second steel strand 6. Rotate the locking rings 15 of the first connecting part 9 and the second connecting part 10 respectively to achieve a horizontal connection between the first precast shear wall 1 and the second precast shear wall 2.

[0040] S4. Pass the reserved reinforcing bars 11 through the reserved reinforcing bar holes on the steel connecting box 8 from top to bottom, and connect them to the reserved reinforcing bars at the top of the lower shear wall through the connecting sleeve 14.

[0041] S5. Formwork is provided for the connection area between the first precast shear wall 1 and the second precast shear wall 2 to form a space for post-cast strip pouring;

[0042] S6. Concrete is poured into the back pouring strip space and into the corrugated pipe 12 at the bottom of the first precast shear wall 1 and the second precast shear wall 2 to complete the connection construction of the upper and lower shear walls and the adjacent walls.

[0043] This invention achieves horizontal connection between walls by pre-embedding anchoring steel bars inside the first precast shear wall 1 and the second precast shear wall 2, and connecting them with steel strands extending from the walls, in conjunction with steel connecting boxes 8 with connecting parts on both sides. Since the steel strands are flexible components, they are less prone to permanent deformation during prefabrication, transportation, and hoisting, effectively avoiding the problems of steel bar bending and alignment difficulties in traditional reinforcement methods, reducing the risk of on-site correction or rework, and improving construction efficiency and component quality. Simultaneously, the reserved insertion holes on the steel connecting box 8 are used to insert insertion bars 11, which are connected to the reserved insertion bars of the lower shear wall through connecting sleeves 14, allowing vertical and horizontal connections to be completed collaboratively within the same structural area, simplifying on-site construction procedures and shortening the construction cycle. This structure, while ensuring connection reliability, achieves a flexible reinforcement design for precast components, facilitating production, transportation, and rapid on-site installation.

[0044] The above description is merely a preferred embodiment of the present invention and does not limit the scope of the present invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A cable-stayed shear wall structure, comprising a first precast shear wall and a second precast shear wall, characterized in that: The first precast shear wall has a first anchoring steel bar embedded inside, and a first steel strand extends from the side of the first precast shear wall. One end of the first steel strand is wound around and fixed to the first anchoring steel bar. The second precast shear wall has a second anchoring steel bar embedded inside, and a second steel strand extends from the side of the second precast shear wall. One end of the second steel strand is wound around and fixed to the second anchoring steel bar. A steel connecting box is provided between the first precast shear wall and the second precast shear wall. The steel connecting box has a first connecting part and a second connecting part on opposite sides. The first connecting part is connected to the first steel strand, and the second connecting part is connected to the second steel strand. The steel connecting box also has reserved insertion holes that pass through its upper and lower ends. Insertion bars are inserted into the reserved insertion holes, and the insertion bars are connected to the insertion bars of the lower shear wall through connecting sleeves.

2. The cable-connected shear wall structure according to claim 1, characterized in that: Both the first connecting part and the second connecting part are wire rope tensioners, used to lock the first steel strand and the second steel strand, respectively.

3. The cable-connected shear wall structure according to claim 2, characterized in that: The wire rope tensioner includes a locking ring, with internal threaded holes on both sides of the locking ring, and a first screw and a second screw screw are screwed onto each side. The other end of the first screw screw is fixedly connected to a steel connecting box, and the other end of the second screw screw is fixedly connected to a connecting ring, which is connected to the steel strand rope.

4. The cable-connected shear wall structure according to claim 1, characterized in that: The bottom of the first and second precast shear walls are respectively embedded with corrugated pipes, and the top of the walls is also embedded with reinforcing bars that extend outward from the top of the walls.

5. A construction method for a cable-stayed shear wall structure, characterized in that, The method for constructing a cable-connected shear wall structure according to any one of claims 1 to 4 includes the following steps: S1. Precast the first precast shear wall and the second precast shear wall. During the precasting process, one end of the first steel strand is wound around the first anchoring steel bar and fixed by the tightening sleeve, and one end of the second steel strand is wound around the second anchoring steel bar and fixed by the tightening sleeve. The other ends of the first steel strand and the second steel strand extend out of the side of the corresponding wall. S2. Complete the top leveling work of the lower shear wall and ensure that the position of the pre-reserved connecting sleeve at the top of the lower shear wall and the upper side reinforcement of the wall is accurate; The first and second precast shear walls are hoisted above the lower shear wall respectively, so that the corrugated pipes embedded at the bottom of the first and second precast shear walls are accurately positioned with the upper side reinforcement bars of the lower shear wall. After adjusting the verticality of the wall, temporary support and fixation are performed. S3. Place the steel connecting box between the first precast shear wall and the second precast shear wall, connect the first connecting part on the steel connecting box to the protruding end of the first steel strand, and connect the second connecting part on the steel connecting box to the protruding end of the second steel strand. Rotate the locking rings of the first connecting part and the second connecting part respectively to achieve the horizontal connection between the first precast shear wall and the second precast shear wall. S4. Pass the reserved reinforcing bars through the reserved reinforcing bar holes on the steel connection box from top to bottom, and connect them to the reserved reinforcing bars at the top of the lower shear wall through the connecting sleeve. S5. Formwork is provided for the connection area between the first precast shear wall and the second precast shear wall to form a space for the post-cast strip. S6. Pour concrete into the pouring space of the back pouring strip and into the corrugated pipes at the bottom of the first and second precast shear walls to complete the connection construction of the upper and lower shear walls and the adjacent walls.

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