Variable friction pendulum shock insulation support

A seismic isolation bearing and variable friction technology, which is applied in the directions of earthquake resistance, building type, and building, etc., can solve the problems of unguaranteed bearing safety and large horizontal displacement of the seismic isolation layer.

Pending Publication Date: 2018-08-14
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of the isolation layer does not change significantly under different levels of earthquakes, which makes the horizontal displacement of the isolation layer may be large under the action of rare and extremely rare earthquakes, and the safety of the support is not guaranteed

Method used

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  • Variable friction pendulum shock insulation support
  • Variable friction pendulum shock insulation support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] combine figure 1 , figure 2 As shown, a variable friction pendulum shock-isolation support includes an upper connection block, a lower connection block located below the upper connection block, and a slider. The upper surface of the lower connection block is provided with a lower friction layer. The upper surface of the slider is in spherical contact with the lower surface of the upper connecting block, and the lower surface of the slider is in spherical contact with the upper surface of the lower connecting block, that is, the lower surface of the slider is in spherical contact with the lower friction layer on the upper surface of the lower connecting block. The slider is made of high strength alloy.

[0025] The upper connecting block includes an upper connecting plate and an upper vertical block integrally formed, the columnar upper vertical block is located at the lower end of the upper connecting plate, and the lower surface of the upper connecting block is the ...

Embodiment 2

[0036] Except the following technical features, all the other unmentioned technical features are the same as embodiment 1.

[0037] In Embodiment 2, there is only one spherical concave surface of the lower connecting block, that is, the radius of curvature of the spherical concave surface of the lower connecting block is a constant value. The lower friction layer set on the spherical concave surface of the lower connection block is alternately divided into friction constant value areas and friction transition areas from the inside to the outside. The friction coefficient of the lower friction layer in the friction constant value area is a constant value. The friction coefficient of the friction layer is a variable value. The lower friction layer corresponding to the friction transition zone should ensure the smooth transition of the lower friction layer corresponding to two adjacent friction constant value zones. From the top view direction, all friction constant value zones C...

Embodiment 3

[0039] Except the following technical features, all the other unmentioned technical features are the same as embodiment 1.

[0040]In the present embodiment 3, the quantity of the spherical concave surface of the lower connection block has two, that is, the radius of curvature of the spherical concave surface of the lower connection block has two, and both radii of curvature are fixed values, that is, the spherical concave surface of the center and the outer surface Spherical concave. The lower friction layer set on the spherical concave surface of the lower connection block is alternately divided into friction constant value areas and friction transition areas from the inside to the outside. The friction coefficient of the lower friction layer in the friction constant value area is a constant value. The friction coefficient of the friction layer is a variable value. The lower friction layer corresponding to the friction transition zone should ensure the smooth transition of t...

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Abstract

The invention relates to a variable friction pendulum shock insulation support and belongs to the technical field of shock insulation. The variable friction pendulum shock insulation support comprisesan upper connecting block, a lower connecting block located below the upper connecting block and a sliding block. A lower friction layer is arranged on the upper surface of the lower connecting block, the upper surface of the sliding block makes spherical contact with the lower surface of the upper connecting block, and the lower surface of the sliding block makes spherical contact with the uppersurface of the lower connecting block. The lower surface of the upper connecting block is a spherical concave face, the upper surface of the sliding block is a first spherical convex face, and the spherical concave face of the upper connecting block is adaptable to the first spherical convex face of the sliding block. The upper surface of the lower connecting block is a spherical concave face, the lower surface of the sliding block is a second spherical convex face, and the spherical concave face of the lower connecting block is adaptable to the second spherical convex face of the sliding block. The variable friction pendulum shock insulation support has damping self-adaption and high self-resetting capacity.

Description

technical field [0001] The invention relates to the field of vibration isolation technology, in particular to a variable friction pendulum vibration isolation support. Background technique [0002] Earthquake is a huge hazard to engineering structures, and it is an important factor considered in the design of engineering structures. In order to reduce the impact of earthquakes on engineering structures, seismic isolation technology came into being. Most of the traditional seismic isolation technologies use rubber seismic isolation bearings, but the performance of such bearings deviates from the design value under the influence of vulcanization, deformation, temperature and other factors, and the energy dissipation capacity is insufficient. The friction pendulum isolation system is developed from the planar slip isolation system. The traditional planar sliding isolation system cannot self-reset, and the sliding performance is highly discrete and difficult to control. The r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04H9/021
Inventor 谭平张亚飞尚继英刘晗龙耀球
Owner GUANGZHOU UNIVERSITY
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