Double-side unequal-thickness concrete constraint steel plate shear wall and construction method thereof

Through the steel plate buckling correction device and formwork reinforcement mechanism, combined with the three-way conduit diversion casting device, the problems of steel plate flatness and verticality control and concrete liquid level maintenance are solved, and efficient concrete construction and deformation avoidance are achieved.

CN119243900AActive Publication Date: 2025-01-03WUHAN CONSTRUCTION ENGINEERING GROUP CO LTD
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Patent Information

Application Number
CN202411440180.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-15
Publication Date
2025-01-03
Estimated Expiration
2044-10-15

AI Technical Summary

Technical Problem

During the construction of concrete-constrained steel plate shear wall, it is difficult to ensure the flatness and verticality of the steel plate. At the same time, the concrete liquid level on both sides of the concrete is maintained at the same level elevation during the concrete pouring process to avoid the problem of steel plate deformation.

Method used

The steel plate buckling correction device and formwork reinforcement mechanism are adopted to correct the flatness and verticality of the steel plate through the screw assembly and the three-way conduit split casting device, and the concrete liquid level is kept consistent by adjusting the concrete flow rate.

Benefits of technology

The damage-free steel plate correction without opening is achieved, the construction process is simplified, the problems caused by deformation of the steel plate and uneven stress of the concrete are avoided, and the construction efficiency and finished product quality are improved.

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Abstract

The invention discloses a bilateral unequal-thickness concrete constraint steel plate shear wall and a construction method thereof. Comprising a steel plate, formworks located on the two sides of the steel plate, a steel plate buckling correcting device used for correcting the bending position of the steel plate, a formwork reinforcing mechanism used for fixing the formworks, and a three-way guide pipe flow dividing pouring device used for adjusting the concrete flow speed on the two sides of the steel plate. The formwork reinforcing mechanism comprises a vertical square steel pipe, a double-channel steel joist located on the outer side of the vertical square steel pipe, and a lead screw assembly penetrating through a gap in the middle of the double-channel steel joist and holes in the formwork and the steel plate. The three-way guide pipe diversion pouring device comprises a three-way guide pipe fixed to an upper opening in the top of the steel plate shear wall, a soft guide pipe connected with two branch pipes of the three-way guide pipe, and adjusting valves installed on the two branch pipes. The device can meet the requirements for flatness and perpendicularity of steel plate installation, meanwhile, the device is simple in structure, easy to operate and capable of being repeatedly turned over, and the problem of steel plate deformation caused by inconsistent side pressure on the left side and the right side of a steel plate is effectively solved.
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Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a double-sided unequal thickness concrete constrained steel plate shear wall and a construction method thereof. Background Art

[0002] The concrete-confined steel plate shear wall assembly is a composite structure formed by setting a relatively thin steel plate in a concrete shear wall, which makes up for the weakness of the ordinary concrete shear wall in insufficient ductility; different thicknesses of the steel plate-confined concrete on both sides can be set according to the requirements of force calculation. This wall has the advantages of high bearing capacity, light weight and good shear resistance, and is particularly suitable for high-rise and super-high-rise buildings in high-intensity areas. It is currently being used more and more widely.

[0003] The overall construction process of steel plate wall is divided into four stages: steel plate hoisting and splicing, steel bar arrangement and steel plate-steel welding connection, formwork reinforcement, and concrete pouring. The setting of its reinforcement system, the deformation control during the steel plate hoisting and splicing process, and the control of the formwork concrete pouring process are the key and difficult points in the construction process of steel plate shear wall. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a double-sided unequal thickness concrete constrained steel plate shear wall and a construction method thereof, which can ensure the flatness and verticality requirements of the steel plate installation. At the same time, the device has a simple structure, simple operation, and can be repeatedly used. During the concrete pouring process, the concrete liquid levels on both sides are always maintained at the same horizontal elevation, effectively avoiding the problem of steel plate deformation caused by inconsistent lateral pressure on the left and right sides of the steel plate.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical measures:

[0006] The double-sided unequal thickness concrete-constrained steel plate shear wall of the present invention comprises a steel plate, a template located on both sides of the steel plate, a steel plate buckling correction device for correcting the bending position of the steel plate, a template reinforcement mechanism for fixing the template, and a three-way conduit diversion casting device for adjusting the concrete flow rate on both sides of the steel plate; the template reinforcement mechanism comprises a vertical square steel pipe fixed to the outside of the steel plate, a double-slot steel support beam located on the outside of the vertical square steel pipe, and a screw rod assembly passing through the gap in the middle of the double-slot steel support beam and the openings on the template and the steel plate; the three-way conduit diversion casting device comprises a three-way conduit fixed to the top upper mouth of the steel plate shear wall by a bracket, a soft conduit connected to the two branches of the three-way conduit, and a regulating valve installed on the two branches of the three-way conduit, and the outlets of the two soft conduits extend into the gap between the steel plate and the template.

[0007] Preferably, the screw assembly includes a screw, a convex screw plug threadedly connected to the end of the screw, a screw nut threadedly connected to the convex screw plug, and a nut positioning ring threadedly connected to the screw and respectively located on both sides of the steel plate. The convex screw plug clamps the two side flanges of the double-slot steel support beam, which are then tightened with a screw nut.

[0008] Furthermore, each screw rod is provided with four nut positioning rings, the two nut positioning rings located in the middle are used to fix the screw rod on the steel plate, and the two nut positioning rings located on both sides are used to limit the installation of the template so that the concrete on the left and right sides of the steel plate have different thicknesses.

[0009] From the above, each screw rod is matched with 4 nut positioning rings, and the screw rod is fixed to the steel plate through the 2 middle nut positioning rings. According to the concrete thickness on the left and right sides, the position of the nut positioning rings on both sides is adjusted to constrain the movement of the formwork, replacing the traditional cement support sticks to achieve the effect of formwork support.

[0010] Furthermore, the steel plate buckling correction device includes bolts distributed in a matrix on both sides of the steel plate and an open-hole square steel tube with bolt clamping holes. The bolts are clamped into the convex bolt clamping holes in a whole row or column. Steel wedges are inserted at intervals in the gap formed by the steel plate and the open-hole square steel tube. The open-hole square steel tube is used as a reference plane, and the steel wedges are hammered to uniformly correct the bending position of the steel plate.

[0011] Preferably, the vertical square steel tubes are fixed on the template with angle codes and self-tapping screws as vertical ribs, and the horizontal spacing of the vertical square steel tubes is 300 mm; the double-slot steel beams are used as horizontal cross ribs, and the vertical spacing of the horizontal double-slot steel beams is 900 mm.

[0012] Furthermore, both sides of the steel plate are welded and restrained to the steel frame columns, and the upper and lower sides of the steel plate are positioned and fixed using C-shaped edge beams.

[0013] Correspondingly, the present invention also provides a method for constructing a double-sided unequal thickness concrete-constrained steel plate shear wall, the steps of which are:

[0014] Step 1: The steel plates are processed and transported to the site for assembly and welding to form steel plate assembly welding seams. The two sides of the steel plates are welded and constrained with steel frame columns, and the upper and lower sides of the steel plates are positioned and fixed with C-shaped edge beams;

[0015] Step 2: Cut convex bolt clamping holes on the perforated square steel pipe, with the bolt clamping holes having the same spacing as the bolts on the side of the steel plate. In the area of ​​the steel plate where the deformation needs to be corrected, insert the bolts into the convex bolt clamping holes in a row or column, insert steel wedges at intervals into the gap formed by the steel plate and the perforated square steel pipe, and use the perforated square steel pipe as a reference plane to uniformly correct the bending position of the steel plate by hammering the steel wedges. After the correction is completed, the above devices can be removed one by one;

[0016] Step 3: The vertical and horizontal spacing of the screw rod assembly is 900mm*900mm, and the screw rod assembly is positioned away from the position of the bolts on the steel plate. The detailed drawings are uniformly laid out and the screw rod holes are reserved on the steel plate directly according to the detailed drawings during the factory production process;

[0017] Step 4: After the steel plate is installed, the steel plate shear wall is reinforced with steel bars;

[0018] Step 5: First, pass the screw of the screw assembly through the screw hole through the steel plate, then set a nut positioning ring on both sides of the steel plate and tighten it to fix the screw on the steel plate. Then, according to the thickness of the concrete on the left and right sides of the steel plate, install another nut positioning ring to limit the installation of the template. Finally, according to the detailed drawing of the screw hole layout in step 3, open the template according to the same module and align it directly with the screw hole for overall assembly of the template.

[0019] Step 6: Use angle codes and self-tapping screws to fix the vertical square steel pipes on the template as vertical ribs. The horizontal spacing of the vertical square steel pipes is 300mm. After all the vertical square steel pipes on one side are installed, the entire template is uniformly corrected to ensure verticality and flatness.

[0020] Step 7: Set horizontal cross braces on the outside of the vertical square steel pipe. The horizontal cross braces use No. 8 double-slot steel joists. The screw rods pass through the gap in the middle of the double-slot steel joists. The vertical spacing of the horizontal double-slot steel joists is 900mm, which is the same as the spacing of the screw rods.

[0021] Step 8: After the horizontal double-slot steel joist is installed, a convex screw plug is used at the end of the screw to clamp the two side flanges of the double-slot steel joist, and then a screw nut is used to tighten the force;

[0022] Step 9. Repeat steps 6, 7 and 8 to completely reinforce the template on the other side;

[0023] Step 10: The steel plate shear wall adopts C50 high-performance self-compacting concrete;

[0024] Step 11, before pouring concrete, fix the three-way conduit to the upper opening of the top of the steel plate shear wall through a bracket, place the two branches of the three-way conduit on both sides of the steel plate respectively, insert the soft conduit connected to the branch into the gap between the steel plate and the formwork, and guide the concrete into the funnel on the top of the three-way conduit through a placing machine, a tower crane, and a concrete pumping truck. According to the different thicknesses of the outer concrete on both sides, the size of the regulating valves installed on the two branches is adjusted so that the concrete liquid levels on both sides of the steel plate are always maintained at the same level during the concrete pouring process. During the concrete pouring process, a small hammer is used to knock the formwork to ensure that the concrete is filled;

[0025] Step 12: After the concrete strength reaches the requirements for demolding, the formwork is removed and the steel plate shear wall is formed.

[0026] From the above, the beneficial effects of the double-sided unequal thickness concrete restrained steel plate shear wall and the construction method thereof of the present invention are as follows:

[0027] 1. The steel plate buckling correction device of the present invention can realize non-destructive correction without the need for drilling holes, and can be used repeatedly.

[0028] 2. After the screw rod of the present invention is optimized, a screw rod with a large diameter of 20 is used for reinforcement, which increases the vertical and horizontal spacing of the screw rod. Through the unified layout deepening, the influence of the screw rod opening on the integrity of the steel plate structure is minimized. At the same time, compared with the traditional steel plate wall screw rod, it avoids the influence of steel plate deformation caused by welding and shortens the on-site operation time.

[0029] 3. Compared with the traditional cement support rods, which have the disadvantages of being densely supported and easily falling off during concrete pouring and vibration, the screw rod of the present invention is equipped with 4 nut positioning rings, and the screw rod is fixed to the steel plate through the two middle nut positioning rings. The positions of the nut positioning rings on both sides are adjusted according to the concrete thickness on the left and right sides to constrain the movement of the formwork, thereby replacing the traditional cement support rods to achieve the effect of formwork support.

[0030] 4. The template reinforcement mechanism of the present invention adopts a combination of vertical square steel pipes and double-slot steel support beams. The template reinforcement mechanism has high rigidity and small deformation, which effectively solves common quality problems such as mold running and achieves good concrete forming effect.

[0031] 5. The concrete pouring of the present invention adopts a three-way conduit diversion pouring device with adjustable flow. By adjusting the valve sizes of the left and right branches respectively, the concrete flow rate of the left and right branches can be adjusted at will, so that the rising rate of concrete of different thicknesses on both sides of the steel plate remains consistent, thereby avoiding the deformation of the steel plate and the expansion and explosion of the mold caused by the uneven side pressure of the concrete on both sides of the steel plate.

[0032] 6. The present invention is simple to operate and has a short construction period. The present invention conducts an in-depth analysis of the key and difficult points in the construction process of the steel plate shear wall at each stage, formulates technically reasonable and economically feasible measures in stages in combination with the actual situation of the construction site, and designs a detachable and revolving steel plate buckling correction device to ensure the flatness and verticality requirements of the steel plate installation. At the same time, the device is simple in structure, simple to operate, and can be repeatedly turned over. By increasing the diameter of the screw rod and reducing the spacing between the screw rods, screw rod holes are directly reserved on the steel plate during the factory production process, reducing the number of steel plate openings by 50%, while avoiding welding between the screw rod and the steel plate, and ensuring the performance requirements of the steel plate. At the same time, in view of the uneven stress during the concrete pouring process on both sides of the steel plate, a "human" shaped three-way conduit diversion pouring device is set up. During the concrete pouring process, the concrete liquid levels on both sides are always kept at the same horizontal elevation, effectively avoiding the steel plate deformation problem caused by the inconsistent lateral pressure on the left and right sides of the steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0034] Figure 1 It is a schematic diagram of steel plate positioning of the present invention;

[0035] Figure 2 It is a schematic diagram of the connection between the perforated square steel pipe and the bolt of the present invention;

[0036] Figure 3 is a plan view of the steel plate buckling correction device of the present invention;

[0037] Figure 4 It is a schematic diagram of the arrangement of the screw rod assembly and the template reinforcement mechanism of the present invention;

[0038] Figure 5 It is a layout and layout deepening drawing of the screw rod assembly of the present invention;

[0039] Figure 6 is a cross-sectional view of a steel plate shear wall of the present invention;

[0040] Figure 7 It is a structural schematic diagram of the template reinforcement mechanism of the present invention;

[0041] Figure 8 It is a structural schematic diagram of the angle bracket of the present invention connecting the steel plate and the vertical square steel pipe;

[0042] Fig. 9 It is a connection schematic diagram of a convex screw plug of the present invention;

[0043] Fig.10It is a structural schematic diagram of the three-way conduit diversion casting device of the present invention.

[0044] In the figure: 1-steel plate; 2-steel column; 3-edge beam; 4-steel plate assembly welding seam; 5-perforated square steel pipe; 6-steel wedge; 7-bolt; 8-bolt clamping hole; 9-vertical square steel pipe; 10-double-slot steel support beam; 11-screw assembly; 12-template; 13-nut locating ring; 14-convex screw plug; 15-screw nut; 16-three-way conduit; 17-regulating valve; 18-soft conduit; 19-bracket; 20-angle code; 21-self-tapping screw. DETAILED DESCRIPTION

[0045] Next, combine Figures 1 to 10 The double-sided unequal thickness concrete restrained steel plate shear wall and the construction method thereof provided by the present invention are introduced in detail.

[0046] like Figure 1-10 As shown, the double-sided unequal thickness concrete constrained steel plate shear wall of the present invention comprises a steel plate 1, templates 12 located on both sides of the steel plate 1, a steel plate buckling correction device for correcting the bending position of the steel plate 1, a template reinforcement mechanism for fixing the template 12, and a three-way conduit diversion pouring device for adjusting the concrete flow rate on both sides of the steel plate 1. Both sides of the steel plate 1 are welded and constrained with steel frame columns 2, and the upper and lower sides of the steel plate 1 are positioned and fixed using C-shaped edge beams 3.

[0047] The template reinforcement mechanism includes a vertical square steel tube 9 fixed on the outside of the steel plate 1, a double-slot steel joist 10 located on the outside of the vertical square steel tube 9, and a screw assembly 11 passing through the gap in the middle of the double-slot steel joist 10 and the openings on the template 12 and the steel plate 1. The vertical square steel tube 9 is fixed to the template 12 as a vertical rib using angle brackets 20 and self-tapping screws 21, and the horizontal spacing of the vertical square steel tube 9 is 300mm. The double-slot steel joist 10 is used as a horizontal cross rib, and the vertical spacing of the horizontal double-slot steel joist 10 is 900mm.

[0048] The three-way conduit diversion casting device of the present invention includes a three-way conduit 16 fixed to the top of the steel plate shear wall by a bracket 19, a soft conduit 18 connected to the two branches of the three-way conduit 16, and a regulating valve 17 installed on the two branches of the three-way conduit 16. The outlets of the two soft conduits 18 extend into the gap between the steel plate 1 and the template 12.

[0049] The screw assembly 11 of the present invention comprises a screw, a convex screw plug 14 threadedly connected to the end of the screw, a screw nut 15 threadedly connected to the convex screw plug 14, and nut positioning rings 13 threadedly connected to the screw and respectively located on both sides of the steel plate 1. The convex screw plug 14 clamps the two side flanges of the double-slot steel support beam 10, and then is tightened by the screw nut 15. Four nut positioning rings 13 are arranged on each screw, and the two nut positioning rings 13 located in the middle are used to fix the screw on the steel plate 1, and the two nut positioning rings 13 located on both sides are used to limit the installation of the template 12 so that the concrete on the left and right sides of the steel plate 1 has different thicknesses.

[0050] The steel plate buckling correction device of the present invention comprises bolts 7 distributed in a matrix on both sides of a steel plate 1 and a perforated square steel tube 5 having bolt clamping holes 8. The bolts 7 are clamped into the convex bolt clamping holes 8 in a row or column. Steel wedges 6 are inserted at intervals into the gap formed between the steel plate 1 and the perforated square steel tube 5. The perforated square steel tube 5 is used as a reference plane, and the steel wedges 6 are hammered to uniformly correct the bending position of the steel plate 1.

[0051] Accordingly, the present invention also provides a method for constructing a double-sided unequal thickness concrete-constrained steel plate shear wall as described above, comprising the following steps:

[0052] Step 1: The steel plates are processed and manufactured in the factory and transported to the site for installation. They are installed in sections. Considering the large overall size of the steel plates and the thinner thickness of the steel plates, they are easily deformed. Therefore, they are divided into sections in the factory and spliced ​​on site by split-cut full-penetration welding. Figure 1 The steel plate 1 is processed and manufactured in the factory and transported to the site for assembly and welding to form a steel plate assembly welding seam 4. Both sides of the steel plate 1 are welded and constrained with the steel frame column 2, and the upper and lower sides of the steel plate 1 are positioned and fixed with C-shaped edge beams 3.

[0053] Step 2: Figure 2 , Figure 3 As shown, convex bolt clamping holes 8 are formed by cutting on the perforated square steel tube 5 (100*50*3mm), and the bolt clamping holes 8 are at the same distance as the bolts 7 on the side of the steel plate 1. In the area of ​​the steel plate where deformation needs to be corrected, the bolts 7 are inserted into the convex bolt clamping holes 8 in a row or a column, and steel wedges 6 are inserted into the gap formed by the steel plate 1 and the perforated square steel tube 5 at intervals. With the perforated square steel tube 5 as the reference plane, the bent position of the steel plate 1 is uniformly corrected by hammering the steel wedges 6. After the correction is completed, the above-mentioned devices can be removed one by one.

[0054] Step 3: Figure 4 and Figure 5As shown, the traditional φ14 screw is enlarged and replaced with a φ20 screw assembly 11. The vertical and horizontal spacing of the screw assembly 11 is 900mm*900mm. The screw assembly 11 is positioned away from the position of the bolt 7 on the steel plate 1, and a unified layout is formed to form a detailed drawing. During the factory production process, the screw hole is directly reserved on the steel plate 1 according to the detailed drawing.

[0055] Step 4: After the steel plate 1 is installed, the steel plate shear wall is reinforced. The steel bar specifications and spacing are detailed in the structural design drawings. The steel bars at the end of the steel plate shear wall are dense, and the number of stirrups and tension bars is large. When encountering a steel plate wall, it needs to pass through the reinforcement holes. Some stirrups need to be cut off and welded after cutting to ensure the formation of closed stirrups. The requirements are the same as those for steel frame structure nodes. The inner reinforcement of the wall is tied to the structural reinforcement on the inner side of the steel plate wall to ensure the integrity of the steel skeleton.

[0056] Step 5: Figure 6 As shown, the screw of the screw assembly 11 is first passed through the steel plate 1 through the screw hole, and then a nut positioning ring 13 is respectively arranged on both sides of the steel plate 1 and tightened to fix the screw on the steel plate 1. Subsequently, according to the thickness of the concrete on the left and right sides of the steel plate 1, another nut positioning ring 13 is respectively installed to limit the installation of the template 12. Finally, according to the detailed drawing of the screw hole layout in step 3, the template 12 is opened according to the same module, and the template 12 is directly aligned with the screw hole for overall assembly.

[0057] Step 6: Figure 7 ,like Figure 8 As shown, the vertical square steel pipes 9 are fixed on the template 12 as vertical ribs by using angle codes 20 and self-tapping screws 21. The vertical square steel pipes 9 are arranged with a horizontal spacing of 300 mm. After all the vertical square steel pipes on one side are installed, the entire template 12 is uniformly corrected to ensure verticality and flatness.

[0058] Step 7, set horizontal cross ribs on the outside of the vertical square steel pipe 9, the horizontal cross ribs use No. 8 double-slot steel joists 10, the screw rods pass through the gap in the middle of the double-slot steel joists 10, and the vertical spacing of the horizontal double-slot steel joists 10 is 900mm with the spacing of the screw rods.

[0059] Step 8: Fig. 9 As shown, after the horizontal double-slot steel joist 10 is installed, the end of the screw uses a convex screw plug 14 to clamp the two side flanges of the double-slot steel joist 10, and then the screw nut 15 is used to tighten the force.

[0060] Step 9. Repeat steps 6, 7, and 8 to completely reinforce the template on the other side.

[0061] Step 10: The steel plate shear wall adopts C50 high-performance self-compacting concrete. The water-cement ratio is determined according to calculation. The coarse aggregate adopts continuous grading. The maximum nominal particle size should not be greater than 16mm. The slump expansion is 760-850mm.

[0062] Step 11: Fig.10 As shown, before concrete pouring, the three-way conduit 16 is fixed to the upper opening of the top of the steel plate shear wall through the bracket 19, and the two branches of the three-way conduit 16 are respectively placed on both sides of the steel plate 1, and the soft conduit 18 connected to the branch pipe is inserted into the gap between the steel plate 1 and the template 12. The concrete is introduced into the funnel on the top of the three-way conduit 16 through a placing machine, a tower crane, and a concrete pumping truck. According to the different thicknesses of the outer concrete on both sides, the size of the regulating valve 17 installed on the two branches is adjusted so that during the concrete pouring process, the concrete liquid level on both sides of the steel plate 1 is always maintained at the same horizontal elevation. During the concrete pouring process, a small hammer is used to knock the template 12 to ensure that the concrete is filled. The hammering force should not be too large to prevent the segregation of the self-compacting concrete.

[0063] Step 12: After the concrete strength reaches the requirements for demolding, the formwork 12 is removed and the steel plate shear wall is formed.

[0064] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be understood by anyone familiar with the technology within the technical scope disclosed by the present invention should be included in the scope of the present invention.

Claims

1. A double-sided unequal thickness concrete-constrained steel plate shear wall, characterized in that: It comprises a steel plate (1), templates (12) located on both sides of the steel plate (1), a steel plate buckling correction device for correcting the bending position of the steel plate (1), a template reinforcement mechanism for fixing the template (12), and a three-way conduit split-flow pouring device for adjusting the concrete flow rate on both sides of the steel plate (1); The template reinforcement mechanism comprises a vertical square steel pipe (9) fixed on the outside of the steel plate (1), a double-slot steel joist (10) located on the outside of the vertical square steel pipe (9), and a screw rod assembly (11) passing through the gap in the middle of the double-slot steel joist (10) and the openings on the template (12) and the steel plate (1); The three-way conduit diversion pouring device comprises a three-way conduit (16) fixed to the top of the steel plate shear wall through a bracket (19), a soft conduit (18) connected to two branches of the three-way conduit (16), and a regulating valve (17) installed on the two branches of the three-way conduit (16), wherein the outlets of the two soft conduits (18) extend into the gap between the steel plate (1) and the template (12).

2. The double-sided unequal thickness concrete-confined steel plate shear wall according to claim 1 is characterized in that: The screw assembly (11) comprises a screw, a convex screw plug (14) threadedly connected to the end of the screw, a screw nut (15) threadedly connected to the convex screw plug (14), and a nut positioning ring (13) threadedly connected to the screw and respectively located on both sides of the steel plate (1), wherein the convex screw plug (14) clamps the two side flanges of the double-slot steel support beam (10) and is then tightened using the screw nut (15).

3. The double-sided unequal thickness concrete-confined steel plate shear wall according to claim 2 is characterized in that: Four nut positioning rings (13) are provided on each screw rod, the two nut positioning rings (13) located in the middle are used to fix the screw rod on the steel plate (1), and the two nut positioning rings (13) located on both sides are used to limit the installation of the template (12) so that the concrete on the left and right sides of the steel plate (1) have different thicknesses.

4. The double-sided unequal thickness concrete-confined steel plate shear wall according to claim 1 is characterized in that: The steel plate buckling correction device comprises bolts (7) distributed in a matrix on both sides of a steel plate (1) and a perforated square steel tube (5) having bolt clamping holes (8), wherein the bolts (7) are clamped into the convex bolt clamping holes (8) in a row or a column, and steel wedges (6) are inserted at intervals into the gap formed by the steel plate (1) and the perforated square steel tube (5). The perforated square steel tube (5) is used as a reference plane, and the steel wedges (6) are hammered to uniformly correct the bending position of the steel plate (1).

5. The double-sided unequal thickness concrete-confined steel plate shear wall according to claim 1 is characterized in that: The vertical square steel pipes (9) are fixed on the template (12) as vertical ribs by using angle brackets (20) and self-tapping screws (21), and the horizontal spacing of the vertical square steel pipes (9) is 300 mm; The double-slot steel joists (10) serve as horizontal cross ribs, and the vertical spacing of the horizontal double-slot steel joists (10) is 900 mm.

6. The double-sided unequal thickness concrete-confined steel plate shear wall according to claim 1 is characterized in that: Both sides of the steel plate (1) are welded and restrained with the steel frame column (2), and the upper and lower sides of the steel plate (1) are positioned and fixed using C-shaped edge beams (3).

7. The method for constructing a double-sided unequal thickness concrete-confined steel plate shear wall according to any one of claims 1 to 6, characterized in that: The steps are: Step 1: The steel plate (1) is processed and manufactured in the factory and transported to the site for assembly and welding to form a steel plate assembly welding seam (4). Both sides of the steel plate (1) are welded and constrained with the steel frame column (2). The upper and lower sides of the steel plate (1) are positioned and fixed with C-shaped edge beams (3); Step 2: Cut and form convex bolt clamping holes (8) on the perforated square steel tube (5), and the bolt clamping holes (8) are at the same distance as the bolts (7) on the side of the steel plate (1). In the area of ​​the steel plate where the deformation needs to be corrected, the bolts (7) are clamped into the convex bolt clamping holes (8) in a row or a column, and steel wedges (6) are inserted into the gap formed between the steel plate (1) and the perforated square steel tube (5) at intervals. With the perforated square steel tube (5) as the reference plane, the steel wedges (6) are hammered to uniformly correct the bending position of the steel plate (1). After the correction is completed, the above-mentioned devices can be removed one by one; Step 3: The vertical and horizontal spacing of the screw rod assembly (11) is 900 mm*900 mm, and the screw rod assembly (11) is positioned away from the position of the bolt (7) on the steel plate (1). The detailed drawings are uniformly arranged and reserved on the steel plate (1) according to the detailed drawings during the factory production process; Step 4: After the steel plate (1) is installed, the steel plate shear wall is reinforced with steel bars; Step 5, firstly, the screw of the screw assembly (11) is passed through the steel plate (1) through the screw hole, and then a nut positioning ring (13) is respectively arranged on both sides of the steel plate (1) and tightened to fix the screw on the steel plate (1), and then, according to the thickness of the concrete wrapped on the left and right sides of the steel plate (1), another nut positioning ring (13) is respectively installed to limit the installation of the template (12), and finally, according to the detailed drawing of the screw hole layout in step 3, the template (12) is opened according to the same module, and the template (12) is directly aligned with the screw hole for the overall assembly; Step 6: Use angle codes (20) and self-tapping screws (21) to fix the vertical square steel pipes (9) on the template (12) as vertical ribs. The horizontal spacing of the vertical square steel pipes (9) is 300 mm. After all the vertical square steel pipes on one side are installed, the entire template (12) is uniformly calibrated to ensure verticality and flatness. Step 7, horizontal cross braces are arranged on the outer side of the vertical square steel tube (9), and the horizontal cross braces adopt No. 8 double-slot steel joists (10), and the screw rods pass through the gap in the middle of the double-slot steel joists (10), and the vertical spacing of the horizontal double-slot steel joists (10) is 900 mm with the spacing of the screw rods; Step 8: After the horizontal double-slot steel joist (10) is installed, the ends of the screws are clamped with the two side flanges of the double-slot steel joist (10) by using convex screw plugs (14), and then tightened with screw nuts (15) to bear the force; Step 9. Repeat steps 6, 7 and 8 to completely reinforce the template on the other side; Step 10: The steel plate shear wall adopts C50 high-performance self-compacting concrete; Step 11, before pouring concrete, fix the three-way conduit (16) to the upper opening of the top of the steel plate shear wall through the bracket (19), place the two branches of the three-way conduit (16) on both sides of the steel plate (1), insert the soft conduit (18) connected to the branch into the gap between the steel plate (1) and the template (12), and guide the concrete into the funnel on the top of the three-way conduit (16) through a concrete placing machine, a tower crane, and a concrete pumping truck. According to the different thicknesses of the outer concrete on both sides, the size of the regulating valves (17) installed on the two branches is adjusted so that during the concrete pouring process, the concrete liquid levels on both sides of the steel plate (1) are always maintained at the same level. During the concrete pouring process, a small hammer is used to knock the template (12) to ensure that the concrete is filled; Step 12: After the concrete strength reaches the requirements for demolding, the formwork (12) is removed and the steel plate shear wall is formed.

Citation Information

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