Horizontal and vertical multi-dimensional vibration isolation and energy consumption system of prefabricated assembling type cantilever framework

Abstract

The invention provides a horizontal and vertical multi-dimensional vibration isolation and energy consumption system of a prefabricated assembling type cantilever framework. The system is mounted between an upper structure and a lower structure, and a gap for allowing the system to vibrate vertically is formed; the system comprises a horizontal vibration isolation subsystem and a vertical vibration isolation subsystem; the horizontal vibration isolation subsystem is located above the vertical vibration isolation subsystem and is composed of a horizontal slide support and SMA spring limiting devices; the SMA spring limiting devices are uniformly distributed in the radial direction and are connected with the horizontal slide support in parallel to work; the vertical vibration isolation subsystem is composed of a plurality of single-truss cantilever frameworks; the horizontal plane of each single-truss cantilever framework is internally connected with SMA rods which are distributed in an X shape. The horizontal vibration isolation subsystem and the vertical vibration isolation subsystem are coupled through a slide block of the horizontal slide support to form a multi-dimensional vibration isolation mechanism. The system can be used for effectively absorbing three-dimensional seismic oscillation, and is high in damping capability and reliable in performance, and can be automatically reset.

Description

technical field [0001] The invention belongs to the technical field of seismic isolation and shock absorption of civil engineering buildings and bridges, and particularly relates to a horizontal and vertical multi-dimensional seismic isolation and energy consumption system of a prefabricated cantilever frame. Background technique [0002] Traditional structural anti-seismic design dissipates the input seismic energy through the elastic-plastic deformation of structural members, so as to achieve the goal that the structure will not collapse during a large earthquake. Although the building did not collapse after the earthquake, the structural and non-structural components suffered obvious damage and excessive residual deformation, and the economic cost of reinforcement and alignment for permanent deformation was high, and the technology was difficult, resulting in demolition and reconstruction. For highway bridges, although they did not collapse after a major earthquake, the e...

AI Technical Summary

Problems solved by technology

This system has certain limitations: (1) No seismic isolation and energy dissipation effect on vertical earthquake action; (2) No post-earthquake self-resetting performance; (3) It is inconvenient to repair and replace components after the damage of the modular unit

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