Shear wall end formwork reinforcing device
By using fixing parts composed of long and short steel bars and screw pressing blocks in the shear wall end formwork, the loosening and molding problems of the shear wall end formwork during concrete pouring are solved, the quality of concrete components is improved and the material cost is reduced.
Patent Information
- Application Number
- CN202423021764.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The existing shear wall end formwork is prone to loosening and swelling during concrete pouring, resulting in serious slurry leakage and lump surface, affecting the quality of the concrete structure.
A reinforcement device including a support mold, a fixing member and a pulling member is adopted. The fixing member is composed of long steel bars and short steel bars. It is tightened by screws and pressing blocks of the pulling member to enhance the integrity and stiffness of the support mold and resist the pressure on the concrete side.
Effectively prevent the shear wall end formwork from loosening and increasing, improve the verticality and flatness of concrete components, reduce the slurry leakage rate, save material costs and realize reusable.
Smart Images
Figure CN223214941U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete wall reinforcement, in particular to a shear wall end formwork reinforcement device. Background Art
[0002] In building construction, shear walls are important structures that bear vertical and horizontal loads, and their construction quality is directly related to the safety and stability of the entire building. Among them, the reinforcement process of the end formwork of vertical components such as shear walls and hidden columns is particularly important.
[0003] The traditional reinforcement process uses steel pipes and screws for fixing. The tightening force of this method is unable to resist the lateral pressure of the fluid during concrete pouring, resulting in loosening of the formwork at the end of the shear wall or even expansion of the formwork. The rigidity of steel pipes and screws for reinforcement is relatively weak, which can easily cause deformation of the end. It is difficult to ensure verticality, flatness, and squareness of corners. That is, after the concrete pouring is completed, the existing reinforcement technology and process are prone to leakage and roughness at the end of the shear wall.
[0004] In some existing shear wall engineering examples, after the concrete pouring is completed, the vertical components are removed from the formwork and inspections reveal that the end leakage, roughness, and other phenomena reach more than 30%, affecting the physical quality of the concrete structural components. The end concrete strength, verticality, and flatness exceed the allowable error range of the quality acceptance specification for cast-in-place structures. In order to avoid affecting the physical quality of the shear wall, a new reinforcement device is urgently needed to avoid the occurrence of this quality problem. Utility Model Content
[0005] In order to ensure the quality of the shear wall entity, the utility model provides a shear wall end formwork reinforcement device.
[0006] The utility model provides a shear wall end formwork reinforcement device adopts the following technical solutions:
[0007] A shear wall end formwork reinforcement device comprises a supporting formwork, a wall, four tensioning members and four fixing members. The supporting formwork covers the outer surface of the wall, and the four fixing members are clamped to the four sides of the supporting formwork through corresponding tensioning members.
[0008] By adopting the above technical solution, the integrity, rigidity and strength of the standardized fixings are better than those of steel pipes. The fixings and the tensioning members are coordinated, and the tensioning members are coordinated with the clamping fixings. The torque force used is greater, which is more conducive to stabilizing the formwork. The quality of the finished shear wall concrete components is greatly improved, the leakage rate at the shear wall ends is reduced, the phenomenon of formwork expansion at the shear wall ends is avoided, and the verticality and flatness of the shear wall are guaranteed.
[0009] Preferably, the four fixing members each include two long steel bars and two short steel bars, each two corresponding long steel bars are vertically fixedly connected to the corresponding two short steel bars, and the outer surfaces of each two corresponding long steel bars are fixedly connected to the outer surfaces of the corresponding two short steel bars.
[0010] Preferably, every two corresponding long steel bars are distributed in parallel and their ends are flush, and every two corresponding short steel bars are distributed in parallel and their ends are flush.
[0011] Preferably, the diameter of the long steel bar is d1, the diameter of the short steel bar is d2, and d1>d2.
[0012] By adopting the above technical solution, the parallelism and stability of the long steel bars are enhanced through the support of the short steel bars, thereby preventing the long steel bars from bending too quickly.
[0013] Preferably, the four tensioning members each include a screw rod and two pressing blocks, and the four screw rods are respectively located around the supporting formwork.
[0014] Preferably, the interiors of each two corresponding pressing blocks are threadedly connected to the outer surfaces of the corresponding screw rods, and one side of each pressing block is clamped to the outer surfaces of the corresponding two long steel bars.
[0015] By adopting the above technical solution, compared with the fixing method of steel pipes and screws, the combination of fixing parts and tensioning parts locks the formwork. The tightening force can withstand the lateral pressure of the fluid during concrete pouring, avoiding the loosening or even expansion of the formwork at the end of the shear wall.
[0016] Preferably, the distance between each short steel bar and one end of the corresponding long steel bar is d4, the distance between each two corresponding short steel bars is d3, and d3<2·d4.
[0017] By adopting the above technical solution, sufficient space can be reserved for the tensioning members, which is beneficial to avoiding deformation of the ends of long steel bars and ensuring the verticality and flatness of the shear wall and the squareness of the inner and outer corners.
[0018] In summary, the present invention has the following beneficial technical effects:
[0019] 1. This device is equipped with fixing parts. The integrity, rigidity and strength of the standardized fixing parts are better than those of steel pipes. The fixing parts and the tensioning parts are matched. The screw and the two pressing blocks are used together to achieve greater torque, which is more conducive to stabilizing the formwork. The quality of the finished shear wall concrete components is greatly improved, the leakage rate at the shear wall ends is reduced, and the phenomenon of formwork expansion at the shear wall ends is avoided. The verticality and flatness of the shear wall are guaranteed.
[0020] 2. The fixing parts of this device adopt existing steel bars at the construction site. The long steel bar 41 adopts the third-grade threaded steel bar with d1 of 18 mm, and the short steel bar adopts the third-grade threaded steel bar with d2 of 16 mm. The third-grade threaded steel bar itself can be processed with waste steel bars from construction. The material does not need to be purchased again, saving the cost of turnover materials such as steel pipes and step-by-step tightening. After the concrete is poured, the disassembled fixing parts 4 can be reused, which also saves material costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a shear wall end formwork reinforcement device of the utility model;
[0022] Figure 2 This is a front view of a shear wall end formwork reinforcement device of the utility model;
[0023] Figure 3 This is a right view of a shear wall end formwork reinforcement device of the utility model;
[0024] Figure 4 This is a top view of a shear wall end formwork reinforcement device of the utility model;
[0025] Figure 5 This is a main view of a fixing part in a shear wall end formwork reinforcement device of the utility model.
[0026] Description of reference numerals:
[0027] 1. Formwork; 2. Wall;
[0028] 3. Tensile member; 31. Screw; 32. Press block;
[0029] 4. Fasteners; 41. Long steel bars; 42. Short steel bars. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-5 The utility model is described in further detail.
[0031] The embodiment of the utility model discloses a shear wall end formwork reinforcement device.
[0032] Reference Figure 1 、 Figure 3 , including a formwork 1, a wall 2, four tension members 3 and four fixing members 4. The top and bottom of the wall 2 connect the upper and lower layers. After the formwork 1 is assembled, concrete is poured into the formwork 1 to obtain the wall 2. Before pouring concrete, the formwork 1 is further reinforced by the fixing members 4 and the tension members 3. The formwork 1 covers the outer surface of the wall 2. The four fixing members 4 are clamped on the four sides of the formwork 1 through the corresponding tension members 3. The wall 2 includes a shear wall concrete component.
[0033] Reference Figure 2 、 Figure 3 The four fixing parts 4 each include two long steel bars 41 and two short steel bars 42. Every two corresponding long steel bars 41 are vertically fixedly connected to the corresponding two short steel bars 42. The outer surface of every two corresponding long steel bars 41 is fixedly connected to the outer surface of the corresponding two short steel bars 42. In each fixing part 4, the two long steel bars 41 are placed horizontally and parallel, and the two short steel bars 42 are placed vertically. The short steel bars 42 support the two long steel bars 41 to always remain parallel. The integrity, rigidity and strength of the standardized fixing parts 4 are better than those of steel pipes. The quality of the finished concrete components is greatly improved, the leakage rate of the end of the concrete wall 2 is reduced, the phenomenon of mold expansion at the end of the wall 2 is avoided, and the verticality and flatness of the wall 2 are guaranteed.
[0034] Reference Figure 2 、 Figure 3 、 Figure 4 Every two corresponding long steel bars 41 are distributed in parallel and their ends are flush, and every two corresponding short steel bars 42 are distributed in parallel and their ends are flush.
[0035] Reference Figure 5 The diameter of the long steel bar 41 is d1, and the diameter of the short steel bar 42 is d2, d1>d2, the long steel bar 41 adopts the third-grade threaded steel bar with d1 of 18 mm, and the short steel bar 42 adopts the third-grade threaded steel bar with d2 of 16 mm. The third-grade threaded steel bar itself can be processed with waste steel bars from construction, and the material does not need to be purchased again, saving the cost of turnover materials such as steel pipes and step-by-step tightening. After the concrete is poured, the disassembled fixing parts 4 can be reused, which also saves material costs.
[0036] Reference Figure 2 、 Figure 3 The four tension members 3 each include a screw 31 and two pressing blocks 32. The four screws 31 are respectively located around the formwork 1. The coordinated use of the screw 31 and the two pressing blocks 32 produces a greater torque force, which is more conducive to stabilizing the formwork 1.
[0037] Reference Figure 4 The interior of each two corresponding pressing blocks 32 are threadedly connected to the outer surface of the corresponding screw rod 31, and one side of each pressing block 32 is clamped on the outer surface of the corresponding two long steel bars 41. The two pressing blocks 32 are attached to the two ends of the two long steel bars 41 through the screw rod 31. By twisting the two pressing blocks 32, the two ends of the two long steel bars 41 are pressed tightly, and then the other two pressing blocks 32 are twisted to tighten the other two ends of the two long steel bars 41. Compared with the fixing method of the steel pipe, the two long steel bars 41 are pressed against the formwork 1 through the two pressing blocks 32 on the screw rod 31, which is convenient and quick to install.
[0038] Reference Figure 5The distance between each short steel bar 42 and one end of the corresponding long steel bar 41 is d4, and the distance between each two corresponding short steel bars 42 is d3, d3 < 2·d4, which can leave enough space for the screw 31 and the two pressing blocks 32 to lock the long steel bars 41, avoiding collision between the pressing blocks 32 and the long steel bars 41 on two adjacent sides of the formwork 1. If a collision occurs, the long steel bars 41 need to be cut on site, so that the arrangement of the short steel bars 42 on the long steel bars 41 can avoid collision between the pressing blocks 32 and the long steel bars 41 on two adjacent sides of the formwork 1, saving time for cutting the long steel bars 41.
[0039] The implementation principle of the shear wall end formwork reinforcement device in the embodiment of the utility model is:
[0040] Step 1. Shear wall formwork 1, complete the installation of wooden vertical ribs, steel pipe beams and other structures;
[0041] Step 2. Group the four fixings 4 and the four tensioning members 3 in pairs. First, place two fixings 4 and tensioning members 3 on two opposite sides of the formwork 1. Then, pull the corresponding screw 31 until it is close to one end of one of the fixings 4. Then, twist the pressure block 32 at the other end until the pressure block 32 at the other end is close to the other end of the other fixing 4.
[0042] Step 3. Repeat step 2 until the two opposing fixing members 4 are locked. Loosen the tensioning member 3 by twisting the clamp 32 to adjust the verticality of the formwork 1. After correcting the verticality, continue tightening the clamp 32.
[0043] Step 4. Repeat steps 2 and 3 until all four sides of the formwork 1 are locked by the four fixings 4 and the four tensioning members 3. Continue installing the fixings 4 and tensioning members 3 in a certain array in the vertical direction, with four fixings 4 and four tensioning members 3 as a group, depending on the height of the formwork 1.
[0044] Step 5, after all the fixing parts 4 and the tensioning parts 3 are installed, pour the concrete. When the formwork 1 needs to be removed, first twist the pressing block 32, remove the screw 31, and disassemble the fixing parts 4. After all the disassembly is completed, remove the formwork 1.
[0045] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.
Claims
1. A shear wall end formwork reinforcement device, characterized by: The formwork (1) comprises a wall (2), four tensioning members (3) and four fixing members (4); the formwork (1) covers the outer surface of the wall (2); and the four fixing members (4) are clamped to the four sides of the formwork (1) through corresponding tensioning members (3).
2. A shear wall end formwork reinforcement device according to claim 1, characterized in that: The four fixing members (4) each comprise two long steel bars (41) and two short steel bars (42), each two corresponding long steel bars (41) are vertically fixedly connected to the corresponding two short steel bars (42), and the outer surfaces of each two corresponding long steel bars (41) are fixedly connected to the outer surfaces of the corresponding two short steel bars (42).
3. A shear wall end formwork reinforcement device according to claim 2, characterized in that: Every two corresponding long steel bars (41) are distributed in parallel and their ends are flush, and every two corresponding short steel bars (42) are distributed in parallel and their ends are flush.
4. A shear wall end formwork reinforcement device according to claim 3, characterized in that: The diameter of the long steel bar (41) is d1, and the diameter of the short steel bar (42) is d2, where d1>d2.
5. A shear wall end formwork reinforcement device according to claim 4, characterized in that: The four tensioning members (3) each comprise a screw rod (31) and two pressing blocks (32), and the four screw rods (31) are respectively located around the supporting formwork (1).
6. A shear wall end formwork reinforcement device according to claim 5, characterized in that: The interiors of each of the two corresponding pressing blocks (32) are threadedly connected to the outer surfaces of the corresponding screw rods (31), and one side of each pressing block (32) is clamped to the outer surfaces of the corresponding two long steel bars (41).
7. A shear wall end formwork reinforcement device according to claim 6, characterized in that: The distance between each short steel bar (42) and one end of the corresponding long steel bar (41) is d4, and the distance between each two corresponding short steel bars (42) is d3, where d3<2·d4.