Compression-shear separated type variable-rigidity rubber support and manufacturing method thereof

Abstract

The invention provides a compression-shear separated type variable-rigidity rubber support and a construction method thereof. The compression-shear separated type variable-rigidity rubber support comprises a support upper plate, a support lower plate and shock isolating assemblies arranged between the support upper plate and the support lower plate. The shock isolating assemblies comprises vertical shock isolating assemblies and a horizontal shock isolating assembly. Each vertical shock isolating assembly comprises a long vertical spring, a short vertical spring, a damper, a limiting stop groove and a limiting baffle. The horizontal shock isolating assembly comprises a group of vertical steel rods, a second viscous fluid, a rubber body and interlayer steel plates. The compression-shear separated type variable-rigidity rubber support is simple in structure, the machining technology is concise, all the components are easy to obtain and assemble, installation is convenient, and the performance-cost ratio is high. All the portions of the support adopt metal materials, so that the durability is good; meanwhile, the stress path is clear, vertical force and horizontal force are independently borne by different portions of the support, so that compression-shear separation can be effectively achieved, and the energy dissipating capacity and the self-resetting capacity are high. The vertical rigidity and the horizontal rigidity of the support are both adjustable, variable and controllable, so that shock isolation and displacement limitation under different seismic oscillations are achieved.

Description

technical field [0001] The invention belongs to the field of shock absorption and isolation of engineering structures, in particular to a pressure-shear separation type variable stiffness rubber bearing 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 effec...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a compression-shear separation type variable stiffness rubber bearing and its manufacturing method, to solve the problem of weak energy dissipation capacity, poor shock isolation effect, too small elastic range, poor stiffness controllability and bearing capacity of ordinary bearings at the present stage. Poor technical issues

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