A column shear wall reinforcing system and construction method for fabricated formwork

Abstract

The application discloses a column-interim shear wall reinforcing system and construction method for fabricated formwork, which comprises a horizontal reinforcing device and an oblique straightening device. The horizontal reinforcing device comprises a back lath assembly, a horizontal connecting assembly and a corner connecting assembly. The back lath assembly is provided with a plurality of connecting pieces and can rotate relative to the horizontal connecting assembly to extend or retract. The corner connecting assembly is connected with the connecting pieces on the back lath assembly at two ends. The oblique straightening device is located on the side of the wall body and connected with the connecting pieces on the back lath assembly. The oblique straightening device can form vertical support for the wall body by adjusting the length. The oblique straightening device has two different forms and can be flexibly adapted to the pouring of the shear wall under the conditions of the floor pouring and the floor not being poured. The scheme adopts the fast connecting reinforcing system of embracing columns, which can provide fast connection in the right angle and horizontal direction. Meanwhile, the oblique straightening device can utilize the lower poured wall body to form the form of the cable-stayed support, so that the deficiency of the column-interim shear wall limited by the floor pouring speed can be made up.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, specifically to a column shear wall reinforcement system for prefabricated formwork and related construction methods. Background Technology

[0002] In the current construction of shear walls, prefabricated formwork, such as aluminum formwork, plastic formwork, and other new material formwork, is commonly used. This type of formwork system generally includes panels and a reinforcement support system, offering advantages such as convenient construction, high construction efficiency, and reusable formwork, which can handle varying elevations on the construction work surface.

[0003] In actual construction, the casting of inter-column shear walls is frequently encountered. In the casting of such components, the reinforcement and support system (back bracing, tie rods, diagonal bracing, etc.) within the wall formwork area alone cannot form a reliable constraint system. Therefore, columns are often needed, with back bracing and column clamps forming a reliable constraint to prevent formwork bursting during casting. In this process, since the column cross-section width is generally greater than the thickness of the inter-column shear wall, the back bracing needs to be horizontally spliced ​​and connected at corners (both external and internal corners) during construction.

[0004] Currently, for splicing connections, grooved node plates are often used to connect by pressing through tie rods. This is mostly a single-point connection, and the back ribs along the wall surface are prone to zigzag connections at the splicing points, which can lead to deviations in the flatness of the wall surface. For external corner connections, right-angle welding of the back ribs or tie rods are often used. When using tie rods, right-angle fasteners need to be welded to the back ribs. For internal corner connections, direct welding is often used, which reduces the secondary utilization rate of the back ribs.

[0005] In addition, during the pouring of inter-column shear walls, the pouring speed of the shear walls is often faster than that of the floor slab. Therefore, after the pouring of the inter-column shear walls of this floor is completed, it is often necessary to wait for the floor slab of the next floor to be poured before the pouring of the shear walls of the next floor can be carried out, which is not conducive to rapid on-site construction.

[0006] Based on this, in order to improve the shortcomings of the current reinforcement system for inter-column shear walls constructed using prefabricated formwork, which has complex connection construction and strong dependence on floor slab pouring, a reinforcement system for inter-column shear walls based on prefabricated formwork and related construction methods are proposed. Summary of the Invention

[0007] To address the technical problems of existing reinforcement devices in prefabricated formwork systems, such as complex connection construction and strong dependence on floor slab pouring during construction, the present invention aims to provide a column shear wall reinforcement system for prefabricated formwork, which features simple and efficient connection construction. Furthermore, the invention provides a construction method for the column shear wall reinforcement system for prefabricated formwork, effectively overcoming the problems existing in the prior art.

[0008] To achieve the above objectives, the present invention provides a column shear wall reinforcement system for prefabricated formwork, including a horizontal reinforcement device and a diagonal straightening device. The horizontal reinforcement device includes a back rib assembly, a horizontal connecting assembly, and a corner connecting assembly. The horizontal connecting assembly is slidably mounted on the back rib assembly, which is located on the side of the wall. The back rib assembly has several connectors distributed on it, which can rotate relative to the horizontal connecting assembly to extend or retract. The two ends of the corner connecting assembly are respectively connected to connectors on the back rib assembly that are not on the same plane. The diagonal straightening device is located on the side of the wall and connected to the connectors on the back rib assembly. By adjusting the length of the diagonal straightening device, vertical support is provided to the wall.

[0009] Furthermore, the back rib assembly is composed of a first square tube and a second square tube, with the first square tube and the second square tube arranged opposite to each other, forming an installation space for several connectors in the middle.

[0010] Furthermore, the connector includes a dumbbell-shaped component and a round rod. The dumbbell-shaped component is rotatably disposed between the first square tube and the second square tube, and its two ends are respectively connected to the first square tube and the second square tube. One end of the round rod passes through the dumbbell-shaped component and forms a T-shaped structure with the dumbbell-shaped component. The other end of the round rod is a screw. The dumbbell-shaped component can drive the round rod connected to it to rotate freely relative to the first square tube and the second square tube around its own central axis.

[0011] Furthermore, the horizontal connecting device is a groove-shaped connecting plate, which is slidably mounted on the back rib assembly. The web of the groove-shaped connecting plate has a strip-shaped hole, the width of which can be adapted to the diameter of the connector, allowing the connector to pass through.

[0012] Furthermore, the corner connection assembly includes a double-threaded sleeve, the two ends of which are respectively connected to connectors that are not on the same plane.

[0013] Furthermore, the inclined straightening device includes a flexible cable straightening device and a rigid strut straightening device, which can be respectively installed on both sides of the wall or distributed on the same side of the wall.

[0014] Furthermore, the flexible cable straightening device includes a flexible straightening device support rod and a flexible cable. One end of the flexible straightening device support rod is connected to the horizontal reinforcement device. The flexible cable is located on the side of the flexible support rod, with one end connected to the flexible straightening device support rod and the other end connected to the horizontal reinforcement device. The wall is supported and adjusted by adjusting the length of the flexible cable.

[0015] Furthermore, the rigid strut straightening device includes a rigid straightening device strut and a rigid adjustable strut. One end of the rigid straightening device strut is connected to the horizontal reinforcement device. The rigid adjustable strut is located on the side of the rigid straightening device strut, with one end connected to the rigid straightening device strut and the other end connected to the horizontal reinforcement device. The wall is supported and adjusted by adjusting the length of the rigid adjustable strut.

[0016] To achieve the above objectives, the present invention provides a construction method for a column shear wall reinforcement system based on prefabricated formwork, the construction method comprising the following steps:

[0017] (1) Connect the tie rods and protective sleeves through the templates on both sides of the wall, wherein the tie rods pass through the gap between the two symmetrical square tubes of the back rib;

[0018] (2) The first back rib and the second back rib are initially assembled horizontally. Then, the grooved connecting plate on the first back rib is slid along the length of the first back rib to the second back rib. After sliding into place, the connector is rotated through the strip hole in the middle of the grooved connecting plate and fixed.

[0019] At the same time, at the connection between the shear wall and the column, the back rib of the shear wall is extended further and connected to the back rib of the other side of the wall through a corner connection, thus forming a column embrace;

[0020] (3) Install flexible straightening device support rods and rigid straightening device support rods on the side wall of the wall. Then connect one end of the flexible cable or rigid adjustable support rod to the template back rib system through the back rib intermediate connector, and connect the other end to the flexible straightening device support rod or rigid straightening device support rod. Then adjust the verticality of the wall by adjusting the length of the flexible cable and rigid adjustable support rod.

[0021] (4) Shear wall casting.

[0022] The present invention provides a column shear wall reinforcement system and construction method for prefabricated formwork. It adopts a quick connection reinforcement system for column clamping. The connection components of the reinforcement system have a high degree of pre-connection, and the connection construction is simple and efficient. It can provide quick connection in both right angle and horizontal directions.

[0023] It also provides a flexible way to set up the wall tilting straightening device in the reinforcement system, which can utilize the lower-level cast-in-place wall to form a tensioned support form, facilitating the continuous casting of shear walls and compensating for the limitation of inter-column shear walls by the floor slab casting speed. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1This is a structural schematic diagram of the inter-column shear wall reinforcement system;

[0026] Figure 2 This is a schematic diagram of the distribution structure of the inter-column shear wall reinforcement system;

[0027] Figure 3 This is a schematic diagram of the horizontal reinforcement device in this invention;

[0028] Figure 4 This is a schematic diagram of the back rib assembly in this invention;

[0029] Figure 5 This is a schematic diagram of the operating state of the back rib assembly in this invention;

[0030] Figure 6 This is a schematic diagram of the horizontal connection component in this invention;

[0031] Figure 7 This is a schematic diagram of the assembly structure between the horizontal reinforcement device and the horizontal connecting component in this invention;

[0032] Figure 8 This is a schematic diagram of the corner connection component in this invention;

[0033] Figure 9 This is a schematic diagram of the application structure of the corner connection component in this invention;

[0034] Figure 10 This is a schematic diagram illustrating the application of the inclined straightening device in this invention when a horizontal floor slab exists during the pouring of the inter-column shear wall on this floor.

[0035] Figure 11 This is a schematic diagram illustrating the application of the inclined straightening device in this invention when the horizontal floor slab of this floor has not yet been poured during the pouring of the inter-column shear wall.

[0036] The following are the component labels in the attached diagram:

[0037] 1. Shear wall; 2. Column; 3. Prefabricated formwork;

[0038] 4. Horizontal reinforcement device 41. Back rib assembly 411. Square tube 412. Connector 4121. Dumbbell-shaped component 4122. Round rod 42. Horizontal connection assembly 421. Strip hole 43. Corner connection assembly 431. Double threaded sleeve;

[0039] 5. Inclined straightening device 51. Flexible cable straightening device 511. Flexible straightening device support rod 512. First flexible cable 513. Second flexible cable 52. Rigid support rod straightening device 521. Rigid straightening device support rod 522. First rigid adjustable support rod 523. Second rigid adjustable support rod Detailed Implementation

[0040] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0041] To address the technical shortcomings of existing prefabricated formwork systems, such as complex connection construction and strong dependence on floor slab pouring during construction, see [reference needed]. Figures 1-2 The present invention provides a column shear wall reinforcement system for prefabricated formwork, which includes a horizontal reinforcement device 4 and an inclined straightening device 5.

[0042] Furthermore, the horizontal reinforcement device 4 is used for adjusting the levelness of the prefabricated formwork 3, see [link / reference]. Figure 3 It includes a back rib assembly 41, a horizontal connection assembly 42, and a corner connection assembly 43. The back rib assembly 41 is horizontally distributed on the shear wall 1 and the column 2. The horizontal connection assembly 42 is distributed on the back rib assembly 41 in the horizontal direction of the shear wall 1 and the column 2. The corner connection assembly 43 is distributed at the corner of the shear wall 1 and the column 2. Together, they can form a reinforcement system for the inter-column shear wall.

[0043] Further, see Figure 4 The back rib assembly 41 consists of two square tubes 411 and several connectors 412, with the connectors 412 distributed between the first square tube and the second square tube.

[0044] The first square tube and the second square tube are arranged opposite to each other. The first square tube and the second square tube have grooves on two different horizontal mounting surfaces. By opening the grooves, they can be engaged with the horizontal connecting component 42 to form a positioning installation.

[0045] An installation space is left between the first square tube and the second square tube, and several connectors 412 can be distributed in the installation space between the first square tube and the second square tube. The connectors 412 include dumbbell-shaped parts 4121 and round rods 4122.

[0046] The dumbbell-shaped component 4121 has a square structure in the middle and two movable disc structures at both ends. The disc structures at both ends are connected to the first square tube and the second square tube.

[0047] One end of the round rod 4122 passes through the square structure in the middle of the dumbbell-shaped component 4121 and forms a T-shaped structure with the dumbbell-shaped component. The other end of the round rod 4122 is a screw. The dumbbell-shaped component 4121 can rotate freely around its own central axis, driving the threaded round rod 4122 connected to its middle square part to rotate freely relative to the first square tube and the second square tube.

[0048] See Figure 5When the threaded round rod 4122 is required to perform a connecting function, the round rod 4122 can be rotated in a first direction relative to the first square tube and the second square tube, and the threaded section of the threaded round rod 4122 can be exposed outside the first square tube and the second square tube for assembly and connection; when the threaded round rod 4122 is not required to perform a connecting function, it can be rotated in a second direction relative to the first square tube and the second square tube, and it can be concealed between the two symmetrical square tubes.

[0049] See Figure 6 The horizontal connecting component 42 is a groove-shaped connecting plate whose surface matches the cross section of the back rib component 41. It has a protrusion that matches the groove on the first square tube and the second square tube, and can engage with the groove on the first square tube and the second square tube for connection. It can also slide horizontally along the length of the first square tube and the second square tube.

[0050] Meanwhile, a strip hole 421 is provided on the web of the groove-shaped connecting plate. The width of the strip hole 421 can be adapted to the diameter of the threaded round rod 4122, allowing the threaded section of the threaded round rod 4122 to pass through.

[0051] See Figure 7 When the horizontal connecting component 42 is not needed, the grooved connecting plate 42 can slide along the length of the back rib assembly 41 to any position. When the horizontal connecting component 42 is needed, the grooved connecting plate 42 slides along the length of the back rib assembly 41 to the back rib connection end position, and the connecting parts 412 at the two back rib ends to be connected are rotated respectively. The threaded round rod 4122 on the connecting part 412 is passed through the strip hole 421 on the web of the grooved connecting plate, and a nut is passed through the threaded round rod 4122 and tightened to complete the horizontal connection of the back rib assembly. This structure has high flexibility in connection position and simple connection structure, and can achieve rapid horizontal connection.

[0052] At the connection between shear wall 1 and column 2, see Figures 8-9 The back rib of the shear wall 1 needs to be extended further and connected to the back rib of the other side of the wall through the corner connecting component 43, thereby forming a column.

[0053] Furthermore, the corner connection assembly 43 is composed of the connector 412 and the double threaded sleeve 431 in the above structure. When the back rib needs to be connected at an angle, the connector 412 of the two back ribs to be connected on different planes is rotated relative to each other, and the threaded round rods 4122 on them are adjusted to be opposite each other. Then, the double threaded sleeve 431 is passed through the threaded round rods 4122 at both ends to achieve a quick and convenient connection at the angle.

[0054] The oblique straightening device 5 can adjust the verticality of the prefabricated template 3. It includes a flexible cable straightening device 51 and a rigid strut straightening device 52. The flexible cable straightening device 51 and the rigid strut straightening device 52 can be respectively set on the two sides of the wall, or they can be distributed on the same side of the wall. Alternatively, only the flexible cable straightening device 51 or the rigid strut straightening device 52 can be used.

[0055] Secondly, flexible cable straightening device 51 or rigid strut straightening device 52 can be installed on both sides or the same side of the wall. This solution does not limit the distribution structure of the flexible cable straightening device 51 and the rigid strut straightening device 52 on the wall. The specific distribution can be determined according to the actual situation.

[0056] The flexible cable straightening device 51 includes a flexible straightening device support rod 511 and a first flexible cable 512. One end of the flexible straightening device support rod 511 is connected to the connector 412 on the horizontal reinforcement device. One end of the first flexible cable 512 is connected to the flexible straightening device support rod 511, and the other end is threadedly connected to the connector 412 on the horizontal reinforcement device.

[0057] See Figure 10 When the inter-column shear wall is being poured, and there is a horizontal floor slab on this floor, each set of flexible cable straightening devices 51 only needs one flexible cable 512 and one flexible straightening device support rod 511. The flexible cable 512 is set at one end of the flexible straightening device support rod 511. One end of the flexible cable 512 is connected to the connector 412 on the horizontal reinforcement device, and the other end can be directly connected to the horizontal floor slab on this floor to support the wall.

[0058] See Figure 11 When the inter-column shear wall of this floor is poured but the horizontal floor slab of this floor has not yet been poured, each set of flexible cable straightening device 51 requires two flexible cables and one flexible straightening device support rod 511. The two flexible cables are the first flexible cable 512 and the second flexible cable 513. The two flexible cables are respectively set on the upper and lower sides of the flexible support rod 511 along the height direction of the wall. By adjusting the length of the two flexible cables, a tensioned cable system is formed to provide support in order to achieve straightening.

[0059] The rigid strut straightening device 52 includes a rigid straightening device strut 521 and a first rigid adjustable strut 522. The first rigid adjustable strut 522 is disposed on the side of the rigid straightening device strut 521, with one end connected to the rigid straightening device strut 521 and the other end threadedly connected to the connector 412 on the horizontal reinforcement device.

[0060] See Figure 10When the inter-column shear wall is being poured, and there is a horizontal floor slab on this floor, each set of rigid strut straightening device 52 only needs one rigid adjustable strut 522 and one rigid straightening device strut 521. The rigid straightening device strut 522 is set at one end of the rigid strut straightening device 521. One end is connected to the connector 412 on the horizontal reinforcement device, and the other end can be directly connected to the horizontal floor slab on this floor to support the wall.

[0061] See Figure 11 When the inter-column shear wall of this floor is poured but the horizontal floor slab of this floor has not yet been poured, each set of rigid strut straightening device 52 requires two adjustable struts and a rigid straightening device strut 521. The two adjustable struts are the first rigid adjustable strut 522 and the second rigid adjustable strut 523. The two rigid adjustable struts are respectively set on the upper and lower sides of the rigid straightening device strut 521 along the height direction of the wall. By adjusting the length of the rigid adjustable strut 521, a double triangular support straightening system is formed to achieve straightening.

[0062] The above-described scheme constitutes a column shear wall reinforcement system for prefabricated formwork. This scheme also provides an assembly method for the column shear wall reinforcement system for prefabricated formwork, which is divided into an assembly method when the horizontal floor slab has been completed when the shear wall of this floor is being poured, and an assembly method when the horizontal floor slab has not been completed when the shear wall of this floor is being poured.

[0063] Furthermore, when the shear wall of this floor is being poured, the horizontal floor slab has already been poured, which mainly includes the following steps:

[0064] (1) Structural leveling: Before installing the prefabricated formwork 3, take a horizontal measurement of the concrete floor slab or ground elevation at the first layer shear wall pouring position to ensure flatness;

[0065] (2) Template layout: Lay out the template line along the wall, with the error controlled within 1mm. 150mm away from the outside of the template line, lay another control line in the same direction and parallel to it.

[0066] (3) Install wall formwork 3: Apply release agent to the surface of prefabricated formwork 3, and assemble the formwork on both sides of the wall reinforcement starting from the corner;

[0067] (4) Initial fixing of the wall formwork: To prevent the formwork from falling, tie rods and protective sleeves are inserted through the corresponding formwork on both sides of the wall body, with the tie rods passing through the middle gap of the two symmetrical square tubes 411 of the back rib. During the operation, as the number of formwork splices increases, the grooved connecting plate 42 on the back rib 4 is gradually slid along the length of the back rib to the end of the back rib connection;

[0068] (5) Connection of the formwork reinforcement system: including horizontal and right-angle connections of the back ribs. Among them:

[0069] Horizontal connection of back rib assembly 41: The first back rib and the second back rib are initially assembled horizontally. Then, the grooved connecting plate 42 on the first back rib is slid along the length of the first back rib to the second back rib. During the sliding, the connecting piece 412 between the first back rib and the second back rib needs to be rotated to hide in the middle gap. After sliding into place, the connecting piece 412 is rotated through the strip hole 421 in the middle of the grooved connecting plate 42 and tightened with a nut.

[0070] Corner connection of back bracing assembly 41: At the connection between shear wall 1 and column 2, the back bracing of the shear wall 1 needs to be extended further, and connected to the back bracing of the other side wall through corner connection 431, thereby forming a column clamp (e.g. Figure 8 At the right angle where shear wall 1 and column 2 intersect, the third and fourth back ribs need to be connected at the corner. When connecting, first manually fix the fourth back rib on the column surface, then rotate the connector 412 at the end of the third and fourth back ribs on the wall surface, and at the same time adjust the threaded round rod 4122 on it to be opposite. Then, use a double threaded sleeve 431 to pass through the round rod 4122 to achieve the corner connection. For the right angle connection of column 2, repeat the above operation until the connection extends to the back rib on the other side of the wall.

[0071] (6) Adjustment of template levelness: Ensure template levelness by adjusting tie rods, grooved connecting plate 42, double threaded sleeve 431 at right angles, etc.

[0072] (7) Adjustment of formwork verticality: Install the flexible straightening device support rod 511 of the flexible cable straightening device 51 and the rigid straightening device support rod 521 of the rigid support rod straightening device 52 on one side of the concrete floor slab or ground (the flexible cable straightening device and the rigid support rod straightening device can be installed on the same side or opposite side of the wall). Then connect one end of the flexible cable 512 or the rigid adjustable support rod 522 to the formwork back rib assembly 41 through the back rib intermediate connector 412, and the other end to the flexible straightening device support rod 511 or the rigid straightening device support rod 521. Then adjust the verticality of the wall by adjusting the tension of the flexible cable 512 and the length of the rigid adjustable support rod 522.

[0073] (8) Casting shear walls;

[0074] (9) The template of this layer can be completely removed as needed, and then steps (1) to (8) can be repeated.

[0075] (10) Remove the formwork and complete the shear wall pouring.

[0076] Furthermore, when the horizontal floor slab is not fully poured during the pouring of the shear wall on this floor, the main steps include the following:

[0077] (1) Structural leveling: Before installing the prefabricated formwork 3, take a horizontal measurement of the concrete floor slab or ground elevation at the first layer shear wall pouring position to ensure flatness;

[0078] (2) Template layout: Lay out the template line along the wall, with the error controlled within 1mm. 150mm away from the outside of the template line, lay another control line in the same direction and parallel to it.

[0079] (3) Install wall formwork 3: Apply release agent to the surface of prefabricated formwork 3, and assemble the formwork on both sides of the wall reinforcement starting from the corner;

[0080] (4) Initial fixing of the wall formwork: To prevent the formwork from falling, tie rods and protective sleeves are inserted through the corresponding formwork on both sides of the wall body, with the tie rods passing through the middle gap of the two symmetrical square tubes 411 of the back rib. During the operation, as the number of formwork splices increases, the grooved connecting plate 42 on the back rib is gradually slid along the length of the back rib to the end of the back rib connection;

[0081] (5) Connection of the formwork reinforcement system: including horizontal and right-angle connections of the back ribs. Among them:

[0082] Horizontal connection of back rib assembly 41: The first back rib and the second back rib are initially assembled horizontally. Then, the grooved connecting plate 42 on the first back rib is slid along the length of the first back rib to the second back rib. During the sliding, the connecting piece 412 between the first back rib and the second back rib needs to be rotated to hide in the middle gap. After sliding into place, the connecting piece 412 is rotated through the strip hole 421 in the middle of the grooved connecting plate 42 and tightened with a nut.

[0083] Corner connection of back bracing assembly 41: At the connection between shear wall 1 and column 2, the back bracing of the shear wall 1 needs to be extended further, and connected to the back bracing of the other side of the wall through corner connection 43, thereby forming a column clamp (e.g. Figure 8 At the right angle where shear wall 1 and column 2 intersect, the third and fourth back ribs need to be connected at the corner. When connecting, first manually fix the fourth back rib on the column surface, then rotate the connector 412 at the end of the third and fourth back ribs on the wall surface, and at the same time adjust the threaded round rod 4122 on it to be opposite. Then, use a double threaded sleeve 431 to pass through the round rod 4122 to achieve the corner connection. For the right angle connection of column 2, repeat the above operation until the connection extends to the back rib on the other side of the wall.

[0084] (6) Adjustment of template levelness: Ensure template levelness by adjusting tie rods, grooved connecting plates, double threaded sleeves at right angles, etc.

[0085] (7) Adjustment of template verticality: Using the top row of prefabricated templates of the cast shear wall and its back rib assembly 41 (near the root of the shear wall to be cast), install the flexible straightening device support rod 511 of the flexible cable straightening device 51 and the rigid straightening device support rod 521 of the rigid support rod straightening device 52 (the flexible cable straightening device and the rigid support rod straightening device can be installed on the same side or opposite side of the wall). Then, set one end of the first flexible cable 512 and the second flexible cable 513 along the height direction of the wall on the upper and lower sides of the flexible straightening device support rod 511 respectively. One end is connected to the template back rib assembly 41 through the back rib intermediate connector 412, and the other end is connected to the flexible straightening device flexible support rod 511.

[0086] The first rigid adjustable support rod 522 and the second rigid adjustable support rod 523 are respectively installed on the upper and lower sides of the rigid straightening device support rod 521 along the height direction of the wall. One end is connected to the template back rib assembly 41 through the back rib intermediate connector 412, and the other end is connected to the rigid straightening device support rod 521. Then, the verticality of the wall is adjusted by adjusting the tension of the first flexible cable 512 and the second flexible cable 513, and the length of the first rigid adjustable support rod 522 and the second rigid adjustable support rod 523.

[0087] (8) Casting shear walls;

[0088] (9) Retain the top row of prefabricated templates and its back rib components 41 (at least 2);

[0089] (10) Perform steps (3) to (6);

[0090] (11) Install the flexible cable straightening device 51 and the rigid strut straightening device 52. First, use the back brace to fix the flexible straightening device strut 511 or the rigid straightening device strut 521. Then, the first flexible cable 512, the second flexible cable 513, and the flexible straightening device strut 511 form a tensioned straightening system. The first rigid adjustable strut 522, the rigid straightening device strut 521, and the second rigid adjustable strut 523 form a double-triangular support straightening system. During construction, straightening is achieved by adjusting the tension in the cable and the length of the strut.

[0091] (12) Shear wall casting.

[0092] The column shear wall reinforcement system and construction method based on the above scheme for prefabricated formwork adopts a quick connection reinforcement system for column clamping. The connection components of the reinforcement system have a high degree of pre-connection, and the connection construction is simple and efficient, providing quick connections in both right angles and horizontal directions.

[0093] Meanwhile, the wall tilting straightening device utilizes the lower-level cast-in-place wall to form a tensioned support structure, which is easy to operate and compensates for the limitations of the inter-column shear wall due to the floor slab casting speed.

[0094] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A column shear wall reinforcement system for prefabricated formwork, characterized in that, The device includes a horizontal reinforcement device and an oblique straightening device. The horizontal reinforcement device includes a back rib assembly, a horizontal connecting assembly, and a corner connecting assembly. The horizontal connecting assembly is slidably mounted on the back rib assembly. The back rib assembly is located on the side of the prefabricated template. Several connectors are distributed on the back rib assembly. The connectors can be extended or retracted relative to the horizontal connecting assembly by rotation. The two ends of the corner connecting assembly are respectively connected to connectors that are not on the same plane of the back rib assembly. The inclined straightening device includes a flexible cable straightening device and a rigid strut straightening device. The flexible cable straightening device and the rigid strut straightening device can be respectively set on both sides of the wall or distributed on the same side of the wall. The inclined straightening device is set on the side of the wall and connected to the connector on the back rib assembly. The wall is vertically supported by adjusting the length of the inclined straightening device.

2. The column shear wall reinforcement system for prefabricated formwork as described in claim 1, characterized in that, The back rib assembly is composed of a first square tube and a second square tube, which are arranged opposite to each other, forming an installation space for several connectors in the middle.

3. The column shear wall reinforcement system for prefabricated formwork according to claim 2, characterized in that, The connector includes a dumbbell-shaped component and a round rod. The dumbbell-shaped component is rotatably disposed between the first square tube and the second square tube, and its two ends are respectively connected to the first square tube and the second square tube. One end of the round rod passes through the dumbbell-shaped component and forms a T-shaped structure with the dumbbell-shaped component. The other end of the round rod is a screw. The dumbbell-shaped component can drive the round rod connected to it to rotate freely relative to the first square tube and the second square tube around its own central axis.

4. The column shear wall reinforcement system for prefabricated formwork according to claim 1, characterized in that, The horizontal connecting device is a groove-shaped connecting plate, which is slidably mounted on the back rib assembly. The web of the groove-shaped connecting plate has a strip-shaped hole, the width of which can be adapted to the diameter of the connector, allowing the connector to pass through.

5. The column shear wall reinforcement system for prefabricated formwork according to claim 1, characterized in that, The corner connection assembly includes a double-threaded sleeve, the two ends of which are respectively connected to connectors that are not on the same plane.

6. The column shear wall reinforcement system for prefabricated formwork according to claim 1, characterized in that, The flexible cable straightening device includes a flexible straightening device support rod and a flexible cable. One end of the flexible straightening device support rod is connected to a horizontal reinforcement device. The flexible cable is located on the side of the flexible support rod, with one end connected to the flexible straightening device support rod and the other end connected to the horizontal reinforcement device. The wall is supported and adjusted by adjusting the length of the flexible cable.

7. A column shear wall reinforcement system for prefabricated formwork according to claim 1, characterized in that, The rigid strut straightening device includes a rigid straightening strut and a rigid adjustable strut. One end of the rigid straightening strut is connected to the horizontal reinforcement device. The rigid adjustable strut is located on the side of the rigid straightening strut, with one end connected to the rigid straightening strut and the other end connected to the horizontal reinforcement device. The wall is supported and adjusted by adjusting the length of the rigid adjustable strut.

8. A construction method for a column shear wall reinforcement system based on prefabricated formwork, characterized in that, The construction method includes the following steps: (1) Connect the tie rods and protective sleeves through the templates on both sides of the wall, wherein the tie rods pass through the gap between the two symmetrical square tubes of the back rib; (2) The first back rib and the second back rib are initially assembled horizontally. Then, the grooved connecting plate on the first back rib is slid along the length of the first back rib to the second back rib. After sliding into place, the connector is rotated through the strip hole in the middle of the grooved connecting plate and fixed. At the same time, at the connection between the shear wall and the column, the back rib of the shear wall is extended further and connected to the back rib of the other side of the wall through a corner connection, thus forming a column embrace; (3) Install flexible straightening device support rods and rigid straightening device support rods on the side wall of the wall. Then connect one end of the flexible cable or rigid adjustable support rod to the template back rib system through the back rib intermediate connector, and connect the other end to the flexible straightening device support rod or rigid straightening device support rod. Then adjust the verticality of the wall by adjusting the length of the flexible cable and rigid adjustable support rod. (4) Shear wall casting.

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