Lever-type inertial capacity-enhancing efficiency shape memory alloy self-resetting structural system

Abstract

The invention provides a self-resetting structural system of a lever-type inertial capacity-enhancing shape memory alloy. The structural system includes two columns and a beam. The two columns are respectively installed at both ends of the beam to form a door-shaped frame structure; the structural system also includes Including: connecting block, the connecting block is arranged in the middle of the beam; lever, the top of the lever is movably connected with the connecting block, and the connecting block moves horizontally to drive the bar to swing; mass block, the mass block is arranged at the bottom end of the lever; rigid bracket, the lever The rotation fulcrum is set on the rigid support; the self-resetting damper is installed between the rigid support and the lever. This structural system utilizes the mass amplification effect of inertial capacity to provide a large inertia to the structural system with a small mass, thereby playing the role of flexibly adjusting the natural vibration period of the structural system; and the deformation amplification effect of the lever can significantly improve the self-resetting damping Improve the energy consumption efficiency of the device and improve its self-resetting force on the structure.

Description

technical field [0001] The invention belongs to the technical field of structural engineering, and in particular relates to a self-resetting structural system of a lever-type inertial capacity-enhancing efficiency shape memory alloy. Background technique [0002] In order to meet the ductility requirements of building structures under strong earthquakes and achieve the purpose of not falling in large earthquakes, the current seismic design codes allow the main lateral force-resistant components to undergo plastic deformation under strong earthquakes to dissipate seismic energy, resulting in The main components in the building structure have serious damage and large residual deformation, which makes it difficult to repair, and even loses the necessity of repair due to the high repair time and capital cost. In order to quickly put the building structure into use after an earthquake, the concept of recoverable functional structure has been proposed in recent years. The concept...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a self-resetting structural system of a lever-type inertial shape memory alloy to solve the problem that the current displacement damper reduces the natural vibration period of the building structure, which is unfavorable to the acceleration response control of the building structure, and even enlarges the building structure. Seismic effects of structures, etc.

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