Fabricated stiffness-varied transverse connection energy dissipation piece and installation method

Abstract

The invention relates to a fabricated stiffness-varied transverse connection energy dissipation piece, and belongs to the technical field of building structure earthquake resistance. The fabricated stiffness-varied transverse connection energy dissipation piece comprises an energy dissipation area, a lifting area and left and right connecting end plates connected with a shear wall, and the left and right connection end plates are connected with the shear wall through bolts. The lifting area comprises a plurality of steel plates, buckling restraint plates are arranged in front and rear of the adjacent steel plates and connected with the steel plates through bolts, gaps are formed between the adjacent steel plates, and the lifting area is further provided with a threshold value control device. The fabricated stiffness-varied transverse connection energy dissipation piece can realize reliable bolted connection, easy assembly and detachable property of a shear wall component in the transverse direction, a construction method of externally arranging the steel plates of the energy dissipation area and internally arranging the steel plates in the lifting area is adopted, it is ensured that the yield energy dissipation of a damper is first carried out by soft steel under the action of small and medium earthquakes, the steel plates of the lifting area do not participate in the work, andunder the action of large and super large earthquakes, the steel plates of the lifting area begin to work and enhance the performance of the structure.

Description

technical field [0001] The invention relates to an assembly-type variable-rigidity transverse connection energy-consuming part, which belongs to the field of anti-seismic technology of building structures. Background technique [0002] With the rapid development of my country's urbanization process, there are more and more complex types of high-rise and super high-rise building structures, which pose new challenges to the requirements of seismic technology and the durability of structures. With higher bearing capacity and deformation capacity, it has been widely used in structural systems. However, under the action of lateral force and vertical force, the shear wall structure has a large bending deformation. If the wall is opened with vertical joints, the vertical The contact surface will produce relative shear slip deformation. Under large earthquakes and super earthquakes, the lateral stiffness and bearing capacity of the structure will continue to decrease and collapse prob...

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Problems solved by technology

[0002] With the rapid development of my country's urbanization process, there are more and more complex types of high-rise and super high-rise building structures, which pose new challenges to the requirements of seismic technology and the durability of structures. With higher bearing capacity and deformation capacity, it has been widely used in structural systems. However, under the action of lateral force and vertical force, the shear wall structure has a large bending deformation. If the wall is opened with vertical joints, the vertical The contact surface will produce relative shear slip deformation. Under large earthquakes and super earthquakes, the lateral stiffness and bearing capacity of the structure will continue to decrease and collapse problems will occur. Therefore, it is considered to add energy-dissipating bearing devices at the places where the deformation of the shear wall is concentrated. However, if the horizontal connection between the energy dissipation device and two adjacent shear walls is connected by welding, it will cause huge residual deformation and residual stress.

[0003] At present, most shear energy-dissipating dampers are based on a single type of shear yield damper. When the damper yields, the strength does not increase, and it does not have the ability to increase the bearing capacity and stiffness after the decrease. Cannot have the ability of energy consumption, load bearing, stiffness jump and energy consumption load bearing function design

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