A compression-shear separation type variable stiffness shock-isolation bearing and its manufacturing method

Abstract

A compression-shear separation type variable stiffness seismic isolation bearing and its construction method, comprising an upper plate of the bearing, a lower plate of the bearing and an isolation assembly arranged between them, the isolation assembly includes a vertical isolation assembly and a horizontal Vibration isolation components, vertical vibration isolation components include long vertical springs, short vertical springs, dampers, limit stop grooves and limit baffles, horizontal vibration isolation components include core steel rods, steel sleeves and pre-tensioning sets , a pretensioning kit consisting of a sliding ring, a set of shape memory alloy rods and a set of lock nuts. The invention has the advantages of simple structure, simple processing technology, easy acquisition and assembly of each component, convenient installation and high cost performance. All parts of the support are made of metal materials with good durability. At the same time, the force path is clear, and the vertical force and horizontal force are borne separately by different parts of the support, which can effectively realize the separation of compression and shear, and has strong energy dissipation capacity and self-resetting ability. The vertical and horizontal stiffness of the support are adjustable, variable and controllable, so as to realize the vibration isolation and displacement limitation under different ground motions.

Description

[0001] The invention belongs to the field of shock absorption and isolation of engineering structures, in particular to a compression-shear separation type variable-rigidity shock-isolation support and a manufacturing method thereof. Background technique [0002] In the field of earthquake reduction and isolation in civil engineering, it is often necessary to use supports for earthquake isolation, and combine various energy-dissipating elements to dissipate energy and enhance the recoverable function of the structure. The use of various forms of seismic isolation bearings can reduce the effect of earthquakes on the superstructure, thereby protecting the safety of the superstructure. Commonly used isolation bearings include: rubber isolation bearings, lead rubber isolation bearings, sliding flat isolation bearings, friction pendulum isolation bearings, etc. Due to the shortcomings of the current seismic isolation bearings such as easy aging, poor seismic isolation effect, weak ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of this utility model is to provide a pressure-shear separation type variable stiffness shock-isolation bearing and its manufacturing method, to solve the problem of poor durability, easy aging, weak self-resetting ability, weak energy consumption capacity and poor shock-isolation effect of common bearings at this stage. , too small elastic range, poor bearing capacity and other technical problems

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