Lever-type inerter synergistic shape memory alloy self-resetting structural system

Abstract

The invention provides a lever-type inerter synergistic shape memory alloy self-resetting structural system. The structural system comprises two columns, a beam, a connecting block, a level, a mass block, a rigid bracket, and self-resetting dampers. The two columns are installed at the two ends of the beam respectively to form an n-shaped frame structure. The connecting block is arranged in the middle of the beam. The top end of the lever is connected with the connecting block in a movable mode, and the connecting block moves horizontally to drive the lever to swing. The mass block is arrangedat the bottom end of the lever. The rotating fulcrum of the lever is arranged on the rigid bracket. The self-resetting dampers are mounted between the rigid bracket and the lever. According to the structural system, large inertia is provided for the structural system with small mass by utilizing the mass amplification effect of inertia, so that the effect of flexibly adjusting the natural vibration period of the structural system is achieved; and the energy consumption efficiency of the self-resetting dampers can be remarkably improved through the deformation amplification effect of the lever, and the self-resetting acting force of the self-resetting dampers on the structure is improved.

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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