A special-shaped three-dimensional shock-isolation bearing

Abstract

A special-shaped three-dimensional shock-isolation support, which is located between the upper and lower structures that require shock isolation, including: a bottom plate connected to the lower structure; at least two special-shaped supports, composed of parallel upper and lower sealing plates sandwiching a first elastic block ; The upper and lower connecting corner blocks have a horizontal bottom surface and an inclined top surface, and when the upper connecting corner block is inverted and superimposed on the lower connecting corner block, the bottom surfaces are parallel; the horizontal support is composed of the upper and lower plates sandwiching the second elastic block ; sliding panel; the upper connecting corner block is connected with the special-shaped support and the lower connecting corner block upside down in turn, and then fixed and supported on the bottom plate in a center-symmetrical distribution, and the sliding panel is fixed on the bottom surface of the inverted upper connecting corner block, The horizontal support is supported on the sliding panel vertically and rotatably around the central symmetry line, and the contact surface is made of friction material, and the upper plate of the horizontal support is connected with the upper structure. The invention can isolate horizontal and vertical earthquakes at the same time, and can be used for vertical earthquake isolation of buildings with large self-weight.

Description

technical field [0001] The invention relates to the technical fields of environmental vibration and shock resistance and shock absorption, in particular to a special-shaped three-dimensional shock-isolation bearing, which can be used for shock / vibration reduction of ordinary buildings, special structures, bridges, and mechanical equipment. Background technique [0002] The seismic isolation technology of building structure foundation has achieved remarkable research results. However, research results at home and abroad show that the isolation elements commonly used at present can only isolate horizontal earthquakes, and have no isolation effect on vertical earthquakes. In high-intensity areas where the vertical seismic action is relatively large, the vertical seismic action may become the main controlling factor of the structural response. Furthermore, for some important equipment and buildings, such as nuclear power structures, vertical earthquakes will bring great hidden ...

AI Technical Summary

Problems solved by technology

One is to use air springs and hydraulic oil for vertical vibration isolation, but the performance of this vibration isolation support is not stable enough

The other type is a combined seismic isolation bearing that converts the vertical deformation into the horizontal displacement of the bearing. Although the performance is relatively stable, the size is large and the manufacturing cost is high. The large shear deformation of the isolation bearing will affect the isolation effect of the isolation bearing under the earthquake, and cannot effectively solve the problem of performance matching between the bearing capacity and deformation capacity of the isolation bearing

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