Damping shear wall structure

Abstract

The invention relates to a damping shear wall structure, and discloses a corrugated steel plate coated cold-formed thin-walled steel shear wall provided with SMA dampers. The shear wall comprises vertical H-shaped side stand columns, vertical C-shaped middle stand columns, a horizontal U-shaped top, bottom rods and wall panels. Each side stand column is formed by connecting two pieces of C-shaped steel in a back-to-back mode, each wall panel is formed by connecting three corrugated steel plates in a lap joint mode, and the components are firmly connected through self-tapping screws. A novel SMA damper with excellent energy absorption and dissipation characteristics is arranged in a cold-formed thin-walled steel shear wall frame, one end of the SMA damper is connected to a side stand column through a support of the SMA damper, and the other end of the SMA damper is connected to a bottom guide rail. Under the action of external force, the SMA damper deforms and automatically recovers to the original shape through the shape memory effect of the SMA damper, so that the dynamic response of the structure is remarkably reduced, the anti-seismic recovery capacity of the shear wall is improved, and the problems of fatigue and loss possibly occurring in a conventional damping system are reduced. The components are mainly connected through the screws and the bolts, the construction process is greatly simplified, and the construction cost and the maintenance cost are reduced. In addition, materials of the wall body are limited to steel and shape memory alloy, material purchasing and supply chain management are simplified, construction efficiency is improved, the two materials can be recycled, the sustainable development requirement of modern buildings is met, and cyclic utilization of resources is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a damping shear wall structure. Background Art

[0002] With the continuous advancement of science and technology and the increasing demand for safer and more economical building solutions, new materials are widely used in building structures due to their excellent performance. Although the traditional corrugated steel plate-clad cold-formed thin-walled steel shear wall system has played an important role in improving the strength and stability of building structures, its material thickness is relatively thin and it mainly relies on the skin effect of the wall panel to withstand horizontal shear force, resulting in limited shear bearing capacity. In addition, the components of the cold-formed thin-walled steel shear wall are mainly connected by self-tapping screws, and its energy absorption and dissipation performance is insufficient. Under dynamic loads such as earthquakes, the shear wall is prone to structural damage, affecting the safety and functionality of the overall structure. Summary of the invention

[0003] The object of the present invention is to overcome the defects of the prior art and provide a damping shear wall structure, by arranging a damper support and an SMA cable at the bottom of the shear wall frame to enhance the shear bearing capacity of the shear wall frame and the durability of the wall.

[0004] The technical solution to achieve the above purpose is a damping shear wall structure, comprising:

[0005] A shear wall frame, wherein a wall panel is arranged in the shear wall frame;

[0006] A damper support is arranged in the shear wall frame and fixed to the top, bottom and side of the shear wall frame, and a reserved hole is formed at the top and bottom of the damper support;

[0007] an SMA cable vertically disposed in the damper support, wherein two ends of the SMA cable are respectively disposed in reserved holes located at the top and bottom of the damper support; and

[0008] An adjustment buckle is clamped to the SMA cable and is located in the damper support.

[0009] Furthermore, the shear wall frame comprises:

[0010] A bottom rod, the damper support is fixedly mounted on the top of the bottom rod;

[0011] a top rod disposed opposite to the bottom rod and located above the top of the damper; and

[0012] The bottom rod and the top rod are fixedly connected and located at both ends of the bottom rod and the top rod. The damper support is fixed to the side column. The bottom rod, the top rod and the side column are enclosed to form a frame structure, and the wall facade is laid in the frame structure.

[0013] Furthermore, the side columns fix the bottom rod and the top rod by self-tapping screws.

[0014] Furthermore, a center column is provided between the bottom rod and the top rod.

[0015] Furthermore, two damper supports are provided, and the two damper supports are respectively provided on the two side columns.

[0016] Furthermore, a threaded hole is formed at the bottom of the damper support, and a connecting hole is formed on the bottom rod corresponding to the threaded hole, and the bottom rod and the damper support are fixed by connecting the connecting hole and the inner thread of the threaded hole with an anchor bolt.

[0017] Furthermore, a plurality of reserved holes are formed on one side of the damper support close to the side column, and mounting holes are formed on the side column corresponding to the reserved holes, and bolts are inserted into the reserved holes and the mounting holes to fix the side column and the damper support.

[0018] Furthermore, the wall panel is formed by splicing a plurality of corrugated steel plates, and the corrugated steel plates are fixed to the shear wall frame by self-tapping screws.

[0019] Furthermore, a plurality of fixing bolts are vertically arranged in the damper support.

[0020] Furthermore, the top and bottom of the damper support are formed with through holes corresponding to the fixing bolts, and the fixing screw is arranged in the two through holes arranged upper and lower, and a portion of the fixing screw passes through the through holes and extends outside the damper support to form an extension section, and a fixing nut is threadedly connected to the extension section.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The shear bearing capacity of the shear wall frame and the durability of the wall are enhanced by arranging a damper support and an SMA cable at the bottom of the shear wall frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall structural diagram of a damped shear wall structure;

[0024] Figure 2 This is a split rendering of a damped shear wall structure;

[0025] Figure 3 It is an overall structural diagram of a shear wall frame of a damped shear wall structure;

[0026] Figure 4 It is a front view of a side column of a damped shear wall structure;

[0027] Figure 5 It is a top view of the side column of a damped shear wall structure;

[0028] Figure 6 It is a structural schematic diagram of a bottom bar of a damping shear wall structure;

[0029] Figure 7 It is a structural schematic diagram of a wall panel of a damped shear wall structure;

[0030] Figure 8 It is a structural schematic diagram of a damper support of a damping shear wall structure;

[0031] Fig. 9 This is a split rendering of a damper support of a damping shear wall structure;

[0032] Legend: 1. Side column; 2. Center column; 3. Top rod; 31. Bottom rod; 4. Wall panel; 51. Damper support; 52. Fixing bolt; 53. SMA cable; 54. Adjustment buckle; 6. Self-tapping screw; 7. Anchor bolt; 8. C-shaped steel; 9. U-shaped steel. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] See also Figure 1 A damping shear wall structure comprises: a shear wall frame, in which a wall panel 4 is arranged; a damper support 51 arranged in the shear wall frame and fixed to the bottom and side of the shear wall frame, and the top and bottom of the damper support 51 are formed with reserved holes; an SMA cable 53 vertically arranged in the damper support 51, and the two ends of the SMA cable 53 are respectively arranged in the reserved holes located at the top and bottom of the damper support 51; and an adjustment buckle 54 that is clamped to the SMA cable 53 and located in the damper support.

[0035] In the present invention, a preferred embodiment is: the SMA cable 53 is formed by twisting six SMA alloy wires with a diameter of 5 mm, and this configuration enhances its anti-seismic and energy dissipation performance; the SMA cable 53 is vertically arranged in the damper support 51, and the SMA cable 53 passes through the reserved hole of the damper support 51, and the effective length and tension of the SMA cable are adjusted at both ends thereof by using the adjustment buckle 54, so that it can be optimized according to the actual load conditions, and the length and diameter of the SMA cable 53 can also be adjusted according to the actual load and the expected effect; the inner diameter of the adjustment buckle 54 is slightly larger than the diameter of the SMA cable 53, ensuring that it can be smoothly adjusted while being firmly connected; when the shear wall frame is subjected to external stress, the shear wall frame transmits the stress to the damper support 51, and the SMA cable 53 absorbs the stress, thereby increasing the durability of the shear wall frame.

[0036] The SMA cable 53 is formed by twisting 6 SMA alloy wires, so that the SMA cable 53 can be vertically arranged without external force, and the buckle 54 is adjusted to be clamped on the SMA cable 53 to prevent the SMA cable 53 from slipping out of the reserved hole.

[0037] Furthermore, a locking block is formed on the adjusting buckle 54, and a mounting groove is formed on the damper support 51 corresponding to the locking block. By adjusting the adjusting buckle 54, the locking block of the adjusting buckle 54 is locked in the mounting groove, so as to limit the adjusting buckle 54 and the SMA cable 53.

[0038] Furthermore, the shear wall frame includes: a bottom rod 31, the damper support 51 is fixedly installed on the top of the bottom rod 31; a top rod 3 arranged opposite to the bottom rod 31 and located above the top of the damper; and a side column 1 fixedly connected to the bottom rod 31 and the top rod 3 and located at both ends of the bottom rod 31 and the top rod 3, the damper support 51 is fixed to the side column 1, the bottom rod 31, the top rod 3 and the side column 1 are enclosed to form a frame structure, and the wall facade is laid in the frame structure.

[0039] Furthermore, the side column 1 is vertically arranged on both sides of the bottom rod 31 and the top rod 3. The side column 1 is spliced ​​by two back-to-back cold-bent thin-walled C-shaped steels 8 to form an H-shaped cross-section. The two C-shaped steels 8 are fixed at the web by double rows of self-tapping screws 6, and the spacing between two adjacent rows of self-tapping screws 6 is 300 mm; a double row of bolt holes is provided at the bottom of the side column 1 for further fixation; the top rod 3 and the bottom rod 31 are made of cold-bent thin-walled U-shaped steel 9, and the web width of the U-shaped steel 9 is slightly larger than the C-shaped steel 8 used in the above-mentioned column to ensure sufficient structural strength and matching space.

[0040] Furthermore, the side column 1 fixes the bottom bar 31 and the top bar 3 by self-tapping screws 6. The side column 1, the bottom bar 31 and the top bar 3 are all provided with screw holes at corresponding connection parts, and the above components are connected to each other by self-tapping screws 6 to form a rectangular shear wall frame structure.

[0041] Furthermore, a center column 2 is provided between the bottom bar 31 and the top bar 3. The center column 2 is made of a single C-shaped steel 8 and is vertically arranged in the middle of the shear wall rectangular frame; the side columns 1 and the center column 2 use C-shaped steel 8 of the same specification to ensure the unity and stability of the structure.

[0042] In the present invention, a preferred embodiment is that the side columns 1, the middle columns 2, the bottom bars 31 and the top bars 3 form a frame structure, and the wall panels 4 are laid on the surface of the frame structure.

[0043] Furthermore, two damper supports 51 are provided, and the two damper supports 51 are respectively provided on the two side columns 1 .

[0044] Furthermore, a threaded hole is formed at the bottom of the damper support 51, and a connecting hole is formed on the bottom rod 31 corresponding to the threaded hole. The bottom rod 31 and the damper support 51 are fixed by connecting the connecting hole and the inner thread of the threaded hole with an anchor bolt 7.

[0045] Furthermore, the damper support 51 has a plurality of reserved holes on one side close to the side column 1, and the side column 1 forms mounting holes corresponding to the reserved holes, and the side column 1 and the damper support 51 are fixedly connected by inserting bolts into the reserved holes and the mounting holes.

[0046] Furthermore, the wall panel 4 is formed by splicing a plurality of corrugated steel plates, and the corrugated steel plates are fixed to the shear wall frame by self-tapping screws 6 .

[0047] In the present invention, a preferred embodiment is as follows: the wall panel 4 is composed of three corrugated steel plates, namely the upper part, the middle part and the lower part, and the corrugated steel plates are overlapped and assembled in sequence; each corrugated steel plate uses the V-76 model, and the thickness can be selected to be 0.6mm, 0.8mm or 1.0mm according to actual design requirements; the wall panel 4 is pre-set with screw holes at the overlapped part and the connection with the shear wall frame, and the overlap of the wall panel 4 and the connection of the wall panel 4 with the shear wall frame are realized by self-tapping screws 6; in the process of connecting with the shear wall frame, the corrugated steel plate is connected to the column at its trough, wherein the screw spacing when connecting with the side column 1 is 76mm, and the screw spacing when connecting with the middle column 2 is 152mm, to ensure the firmness and stability of the structure.

[0048] Furthermore, a plurality of fixing bolts 52 are vertically arranged in the damper support 51 .

[0049] Furthermore, the top and bottom of the damper support 51 are formed with through holes corresponding to the fixing bolts 52, and the fixing screw is arranged in the two through holes arranged upper and lower, and a portion of the fixing screw passes through the through holes and extends outside the damper support to form an extension section, and a fixing nut is threadedly connected to the extension section.

[0050] The following is an explanation of the use process of a damping shear wall structure of the present invention.

[0051] First, according to the modulus size of the cold-bent thin-walled steel shear wall covered with corrugated steel plates, the cold-bent thin-walled C-shaped steel 8 for the center column 2 and the side column 1 and the cold-bent thin-walled U-shaped steel 9 for the top rod 3 and the bottom rod 31 are prepared, and the two cold-bent thin-walled C-shaped steels 8 are assembled into a vertical side column 1 with an H-shaped combined cross-section according to a double row of screws with a spacing of 300 mm; the cold-bent thin-walled U-shaped steel 9 that has been cut is drilled with anchor bolts 7 holes to be processed into a horizontal upper and lower U-shaped top rod 3 and bottom rod 31, and pre-positioned on the factory assembly line, and the side column 1, the center column 2, the top rod 3 and the bottom rod 31 are connected to form a cold-bent thin-walled steel shear wall frame with self-tapping screws 6 according to the screw arrangement;

[0052] Six SMA wires are cut according to the established specifications of 5 mm in diameter and 200 mm in length, and are twisted and processed into SMA cables 53 in the factory according to the corresponding technical specifications. Then, the damper support 51 and the adjusting buckle 54 are cut according to the specific required dimensions of the SMA damper. The models and specifications of the fixing bolts 52 and the anchor bolts 7 are selected and the cutting is completed. Then, bolt holes are drilled at the corresponding positions of the damper support 51, and the adjusting buckle 54 is sleeved on the SMA cable 53. The SMA cable 53 is inserted into the reserved holes at the top and bottom of the damper support 51 to complete the assembly of the SMA damper. The effective working length of the SMA cable is adjusted by adjusting the buckle 54, and it is stabilized.

[0053] The damper support 51 and the fixing bolts 52 are used to complete the self-reinforcement and the connection with the side column 1, and the assembly of the shear wall frame and the damper support 51 is completed;

[0054] V-76 corrugated steel plate is selected as the wall panel 4. The wall panel 4 is cut according to the overlapping relationship of the three corrugated steel plates and the design specifications, and self-tapping screws 6 are drilled at the corresponding positions; the wall panel 4 is overlapped and connected to the shear wall frame by self-tapping screws 6; finally, anchor bolts 7 are installed at the reserved bolt holes at the corresponding positions of the damper support 51 and the guide rail to complete the further reinforcement of the SMA damper and the production of the corrugated steel plate-covered cold-bent thin-walled steel shear wall equipped with the SMA damper as a whole.

[0055] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A damping shear wall structure, characterized in that: include: A shear wall frame, wherein a wall panel is arranged in the shear wall frame; A damper support is arranged in the shear wall frame and fixed to the top, bottom and side of the shear wall frame, and a reserved hole is formed at the top and bottom of the damper support; An SMA cable vertically arranged in the damper support, wherein two ends of the SMA cable are respectively arranged in reserved holes located at the top and bottom of the damper support; as well as An adjustment buckle is clamped to the SMA cable and is located in the damper support.

2. A damping shear wall structure according to claim 1, characterized in that: The shear wall frame comprises: A bottom rod, the damper support is fixedly mounted on the top of the bottom rod; a top rod disposed opposite to the bottom rod and located above the top of the damper; and The bottom rod and the top rod are fixedly connected and located at both ends of the bottom rod and the top rod. The damper support is fixed to the side column. The bottom rod, the top rod and the side column are enclosed to form a frame structure, and the wall facade is laid in the frame structure.

3. A damping shear wall structure according to claim 2, characterized in that: The side columns fix the bottom rod and the top rod by self-tapping screws.

4. The damping shear wall structure according to claim 2 is characterized in that: A center column is arranged between the bottom rod and the top rod.

5. The damping shear wall structure according to claim 2 is characterized in that: There are two damper supports, and the two damper supports are respectively arranged on the two side columns.

6. The damping shear wall structure according to claim 2 is characterized in that: A threaded hole is formed at the bottom of the damper support, and a connecting hole is formed on the bottom rod corresponding to the threaded hole. The bottom rod and the damper support are fixed by connecting the connecting hole and the inner thread of the threaded hole with an anchor bolt.

7. The damping shear wall structure according to claim 2 is characterized in that: The damper support is formed with a plurality of reserved holes on one side close to the side column, and the side column is formed with mounting holes corresponding to the reserved holes. Bolts are inserted into the reserved holes and the mounting holes to fix the side column and the damper support.

8. The damping shear wall structure according to claim 1 is characterized in that: The wall panel is formed by splicing a plurality of corrugated steel plates, and the corrugated steel plates are fixed to the shear wall frame by self-tapping screws.

9. The damping shear wall structure according to claim 1, characterized in that: A plurality of fixing bolts are vertically arranged in the damper support.

10. A damping shear wall structure according to claim 9, characterized in that: The top and bottom of the damper support are formed with through holes corresponding to the fixing bolts, and the fixing screw is arranged in the two through holes arranged upper and lower. Part of the fixing screw passes through the through holes and extends outside the damper support to form an extension section, and a fixing nut is threadedly connected to the extension section.

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