A fully steel assembled double-legged steel tube-constrained buckling-resistance steel plate shear wall

Abstract

The present invention proposes an all-steel assembled double-limb steel pipe-constrained anti-buckling steel plate shear wall, which belongs to the field of structural engineering technology. The embedded steel plate is welded in the edge frame through the upper fishplate, the lower fishplate, the left fishplate and the right fishplate, and the double-limb constrained steel pipes are symmetrically arranged at equal intervals on both sides of the embedded steel plate, and the embedded steel plate is clamped by the connecting bolts. The present invention improves the shear bearing capacity and hysteretic energy dissipation capacity of the steel plate shear wall. By adjusting the number of double-limb constrained steel pipes, the bearing capacity and stiffness of the shear wall can be conveniently adjusted, which is convenient for structural design. The constrained steel pipe is small in size and light in weight, which is convenient for transportation and hoisting.

Description

Technical Field

[0001] The invention relates to an all-steel assembled double-limb steel pipe-constrained buckling-resistant steel plate shear wall, and belongs to the technical field of structural engineering. Background Art

[0002] Buckling-resistance steel plate shear wall is the most commonly used lateral force resisting member in high-rise buildings. By setting buckling restraint members out of the plane, the out-of-plane buckling deformation of the steel plate is suppressed, thereby improving the mechanical properties of the sheared steel plate. It is favored by the majority of engineering and technical personnel because of its performance advantages such as high initial stiffness, high bearing capacity, high ductility coefficient, and stable hysteretic energy dissipation performance. At present, the commonly used out-of-plane constraint construction methods for buckling-resistance steel plate shear walls in engineering are welding stiffening ribs and installing concrete buckling-resistance cover plates, but the above construction methods still have some shortcomings. The method of welding stiffening ribs requires a lot of welding work to be completed on the steel plate, which leads to welding residual stress and deformation on the steel plate surface before installation. The assembled concrete buckling-resistance cover plate installs the concrete plate on the steel plate by tension bolts, thus avoiding the influence of welding problems. However, the concrete cover plate needs to tie steel bars, make formwork, pour concrete and maintain during production. The production process is relatively complicated. Large-sized concrete cover plates also have the problem of inconvenient transportation and lifting. At the same time, the buckling-resistance cover plate made of concrete material is relatively large, which increases the deadweight of the building structure and the influence of earthquake effects, which is not conducive to the seismic resistance of the structure. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a fully steel assembled double-limb steel pipe restrained buckling-resistant steel plate shear wall which is easy to manufacture and install and has good seismic performance.

[0004] A fully steel assembled double-limb steel pipe-constrained anti-buckling steel plate shear wall comprises an edge frame, wherein the edge frame comprises an upper frame beam, a lower frame beam, a left frame column and a right frame column, wherein the upper frame beam, the left frame column, the lower frame beam and the right frame column are hoisted into a quadrilateral frame, wherein the shear wall further comprises an upper fishplate, a lower fishplate, a left fishplate, a right fishplate, an embedded steel plate, a double-limb constrained steel pipe and connecting bolts, wherein the embedded steel plate is welded in the edge frame through the upper fishplate, the lower fishplate, the left fishplate and the right fishplate, wherein the double-limb constrained steel pipes are symmetrically arranged at equal intervals on both sides of the embedded steel plate, and the embedded steel plate is clamped by the connecting bolts.

[0005] Furthermore, the double-limb restrained steel pipe includes a first steel pipe, a second steel pipe and a plurality of connecting plates, and the first steel pipe and the second steel pipe are arranged in parallel and connected by the plurality of connecting plates.

[0006] Furthermore, the embedded steel plate is provided with through holes for the connecting bolts to pass through, and elongated slits for the connecting bolts to pass through are left between the adjacent plurality of connecting plates as long bolt holes, and the long bolt holes correspond one to one with the through holes.

[0007] Furthermore, a steel gasket is arranged outside the long bolt hole, and the connecting bolt passes through the steel gasket, the long bolt hole and the through hole at the same time, and the pre-tightening force is applied by the steel gasket to fasten the embedded steel plate and the double-limb restrained steel pipe together.

[0008] Furthermore, the double-limb restraint steel pipe is slightly longer than the net size of the embedded steel plate in the installation direction of the double-limb restraint steel pipe, and clamps the fishtail plate in this direction.

[0009] Furthermore, a gap is left between the end of the double-limb restraining steel pipe and the edge frame, and the gap is 1 / 50 of the frame layer height.

[0010] Furthermore, the first steel tube and the second steel tube are both hollow rectangular steel tubes and have the same size.

[0011] Furthermore, the first steel pipe and the second steel pipe are filled with concrete.

[0012] Furthermore, the thickness of the fixing plate is 10-20 mm greater than the diameter of the connecting bolt.

[0013] Furthermore, the connecting bolts are high-strength tension bolts.

[0014] The main advantages of the present invention are: the all-steel assembled double-limb steel pipe-constrained anti-buckling steel plate shear wall of the present invention suppresses the out-of-plane buckling of the embedded steel plate of the contact surface by constraining the steel pipe, thereby reducing the width of the shear plate of the grid, and the buckling mode of the steel plate is converted from overall buckling to grid buckling, thereby improving the shear bearing capacity and hysteresis energy dissipation capacity of the steel plate shear wall. By adjusting the number of double-limb constrained steel pipes, the bearing capacity and stiffness of the shear wall can be conveniently adjusted, which is convenient for structural design. During the processing, there is no need to perform welding operations on the steel plate, thus avoiding the problems of welding residual stress and deformation. The gap between the double-limb steel pipe wall and the tie plate pair can be used as a bolt installation hole. After the tension bolts apply a tension force, the tie plate can assist the steel pipe wall in sharing the influence of the bolt preload, thus avoiding the process of opening holes and reinforcing the openings on the steel pipe wall, and is convenient for processing and manufacturing. The long bolt hole structure can realize the mutual displacement mechanism of the anti-buckling member and the embedded steel plate under the action of earthquake force. The restraint beam does not directly participate in the in-plane force, which protects the restraint beam and enables it to continuously and stably exert its anti-buckling effect on the steel plate. The cross-sectional form of the hollow steel tube restraint steel pipe is easy to make, and it is easy to realize the prefabrication of all-steel structural components, eliminating the need for on-site concrete pouring operations. The cross-sectional form of the steel tube concrete restraint steel pipe has high rigidity and bearing capacity, which can further reduce the width of the wall and increase the usable area of ​​the building. The steel tube restraint steel pipe is small in size and light in weight, which is easy to transport and hoist. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic structural diagram of an all-steel assembled double-leg steel tube-constrained buckling-resistance steel plate shear wall of the present invention;

[0016] Figure 2 Figure 1 AA section schematic diagram along the height arrangement direction;

[0017] Figure 3 This is a schematic diagram of the structure of a double-limb constrained steel pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Reference Figure 1-Figure 3As shown, the present invention proposes an all-steel assembled double-limb steel pipe-constrained anti-buckling steel plate shear wall, including an embodiment of an edge frame, the edge frame includes an upper frame beam 1, a lower frame beam 2, a left frame column 3 and a right frame column 4, the upper frame beam 1, the left frame column 3, the lower frame beam 2 and the right frame column 4 are hoisted into a quadrilateral frame, characterized in that the shear wall also includes an upper fishplate 5, a lower fishplate 6, a left fishplate 7, a right fishplate 8, an embedded steel plate 9, a double-limb constrained steel pipe 10 and a connecting bolt 11, the embedded steel plate 9 is welded in the edge frame through the upper fishplate 5, the lower fishplate 6, the left fishplate 7 and the right fishplate 8, the double-limb constrained steel pipe 10 is symmetrically arranged at equal intervals on both sides of the embedded steel plate 9, and the embedded steel plate 9 is clamped by the connecting bolts 11.

[0020] Specifically, the double-limb restraint steel pipe 10 is a prefabricated part, which is not limited to horizontal installation, but can also be installed vertically. However, no matter what the installation form is, it is necessary to keep the double-limb restraint steel pipe 10 arranged at equal intervals. The embedded steel plate 9 is made of high-ductility steel with good welding performance. In this embodiment, the edge frame is rectangular in shape, and its thickness is thicker than the fish plate and the embedded steel plate 9. Correspondingly, the fish plate frame composed of the upper fish plate 5, the lower fish plate 6, the left fish plate 7 and the right fish plate 8 is also rectangular. The fish plate frame is used as a transition plate to weld the embedded steel plate 9 to the edge frame.

[0021] Reference Figure 2 As shown, in the preferred embodiment of this part, the double-limb restraint steel tube 10 includes a first steel tube 12, a second steel tube 13 and a plurality of connecting plates 14. The first steel tube 12 and the second steel tube 13 are arranged in parallel and connected by a plurality of connecting plates 14.

[0022] Specifically, the production and installation of the double-limb restrained steel pipe 10 are completed in a prefabrication factory. The first rectangular steel pipe 12 is placed horizontally on a platform with the connection surface facing upward, and the gusset plates 14 are arranged on the connection surface by patterning. The gusset plates 14 are fixed to the pipe wall of the first rectangular steel pipe 12 by corner welds, and all the gusset plates 14 are welded in sequence. The first rectangular steel pipe 12 is reversed 90 degrees, and the gusset plate connection surface of the second rectangular steel pipe 13 is pressed against the connection surface of the first rectangular steel pipe 12 where the gusset plates have been welded, and the two ends are aligned. The gusset plates 14 are connected to the second rectangular steel pipe 13 by three-sided welding of corner welds. The double-limb restrained steel pipe 10 is turned 180 degrees as a whole. The welding of the last connecting corner weld between the gusset plates 14 and the second rectangular steel pipe 13 is completed.

[0023] In the above-mentioned double-leg steel tube-constrained anti-buckling steel plate shear wall, the width of the tie plate 14 is the same as the width of the connection surface of the first rectangular steel tube 12 and the second rectangular steel tube 13, and the tie plate 14 and the tube walls of the first rectangular steel tube 12 and the second rectangular steel tube 13 jointly bear the preload force of the connecting bolts.

[0024] Reference Figure 1-Figure 3 As shown, in the preferred embodiment of this part, through holes are opened on the embedded steel plate 9 for the connecting bolts 11 to pass through, and elongated gaps for the connecting bolts 11 to pass through are left between adjacent multiple panels 14 as long bolt holes, and the long bolt holes correspond to the through holes one by one.

[0025] In the preferred embodiment of this part, a steel gasket is arranged outside the long bolt hole, and the connecting bolt 11 passes through the steel gasket, the long bolt hole and the through hole at the same time. The pre-tightening force is applied by the steel gasket to fasten the embedded steel plate 9 and the double-limb restraint steel pipe 10 together.

[0026] Reference Figure 1 As shown, in the preferred embodiment of this part, the double-limb restraint steel tube 10 is slightly longer than the net size of the embedded steel plate 9 in the installation direction of the double-limb restraint steel tube 10, and clamps the fishtail plate in this direction.

[0027] Specifically, in this embodiment, to ensure the restraining effect, the length of the double-limb restraining steel pipe 10 should be greater than the net size of the embedded steel plate 9 in its installation direction, and the end of the double-limb restraining steel pipe 10 should extend into the height range of the fishtail plate.

[0028] Reference Figure 1 As shown, in the preferred embodiment of this part, a gap is left between the end of the double-limb restrained steel pipe 10 and the edge frame, and the gap is 1 / 50 of the frame height, and the frame height refers to the clear height of the floor.

[0029] Specifically, in this embodiment, in order to prevent the double-limb restrained steel tube 10 from contacting the edge frame prematurely, a certain gap should be reserved between the end of the double-limb restrained steel tube 10 and the edge frame.

[0030] Reference Figure 2 As shown, in the preferred embodiment of this part, the first steel tube 12 and the second steel tube 13 are both hollow rectangular steel tubes and have the same size.

[0031] In the preferred embodiment of this part, the first steel tube 12 and the second steel tube 13 are filled with concrete.

[0032] Specifically, the first steel pipe 12 and the second steel pipe 13 may be filled with concrete or not, and the concrete may be ordinary concrete or high-strength concrete.

[0033] In the preferred embodiment of this part, the thickness of the fixing plate 14 is 10-20 mm greater than the diameter of the connecting bolt 11 .

[0034] In the preferred embodiment of this part, the connecting bolts 11 are high-strength tension bolts.

Claims

1. An all-steel assembled double-limb steel tube-constrained buckling-resistance steel plate shear wall, comprising an edge frame, wherein the edge frame comprises an upper frame beam (1), a lower frame beam (2), a left frame column (3) and a right frame column (4), wherein the upper frame beam (1), the left frame column (3), the lower frame beam (2) and the right frame column (4) are hoisted into a quadrilateral frame, characterized in that: The shear wall further comprises an upper fish plate (5), a lower fish plate (6), a left fish plate (7), a right fish plate (8), an embedded steel plate (9), a double-limb restraining steel pipe (10) and connecting bolts (11); the embedded steel plate (9) is welded in the edge frame through the upper fish plate (5), the lower fish plate (6), the left fish plate (7) and the right fish plate (8); the double-limb restraining steel pipe (10) is symmetrically arranged at equal intervals on both sides of the embedded steel plate (9), and the embedded steel plate (9) is clamped by the connecting bolts (11); The double-limb restraining steel pipe (10) comprises a first steel pipe (12), a second steel pipe (13) and a plurality of gusset plates (14); the first steel pipe (12) and the second steel pipe (13) are arranged in parallel and connected by the plurality of gusset plates (14). The embedded steel plate (9) is provided with a through hole for the connecting bolt (11) to pass through, and between the adjacent plurality of tie plates (14) are provided a slender slit as a long bolt hole for the connecting bolt (11) to pass through, the long bolt holes corresponding to the through holes one by one, and a steel gasket is provided outside the long bolt hole, and the connecting bolt (11) passes through the steel gasket, the long bolt hole and the through hole at the same time, and a pre-tightening force is applied by the steel gasket to fasten the embedded steel plate (9) and the double-limb restraining steel pipe (10) together; A gap is left between the end of the double-limb restraining steel pipe (10) and the edge frame, and the gap is 1 / 50 of the frame layer height; The first steel tube (12) and the second steel tube (13) are both hollow rectangular steel tubes and have the same size.

2. The all-steel assembled double-leg steel tube-constrained buckling-resistance steel plate shear wall according to claim 1 is characterized in that: The double-limb restraining steel pipe (10) is longer than the net size of the embedded steel plate (9) in the installation direction of the double-limb restraining steel pipe (10), and clamps the fishtail plate in this direction.

3. The all-steel assembled double-leg steel tube-constrained buckling-resistance steel plate shear wall according to claim 1 is characterized in that: The first steel pipe (12) and the second steel pipe (13) are filled with concrete.

4. The all-steel assembled double-leg steel tube-constrained buckling-resistance steel plate shear wall according to claim 1, characterized in that: The thickness of the fixing plate (14) is 10 to 20 mm greater than the diameter of the connecting bolt (11).

5. The all-steel assembled double-leg steel tube-constrained buckling-resistance steel plate shear wall according to claim 1 or 4, characterized in that: The connecting bolts (11) are high-strength tension bolts.

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