Abstract
In this paper, the Abaqus model of an 8 layer isolation structure is established, and the connector element provided in the software is used to simulate the stiffness multilinearity in the horizontal and vertical direction of the isolation bearing. In the numerical analysis, six kinds of working conditions are set up to compare the vertical displacement, the peak acceleration and the interlayer displacement etc, and the effect of bearing failure on the superstructure is obtained.
Highlights
Under the action of earthquakes, especially strong earthquakes, the traditional buildings are very easy to cause the continuous collapse or overturn
There have been no cases of collapse or overturn of isolated buildings under earthquake action so far, it is necessary to study the damage of isolation bearing and the effect of the failure of isolation layer on the collapse of the structure in strong earthquakes
With the increase of the depth-width ratio, the overturning moment of the structure increases gradually, which can cause the eccentricity of the isolation layer, and the local isolation bearing may be damaged by the tensile force
Summary
Under the action of earthquakes, especially strong earthquakes, the traditional buildings are very easy to cause the continuous collapse or overturn. It has been proved that this situation is extremely possible, so the actual seismic capacity of the structure should have some redundancy, and it is still necessary to ensure that there is no excessive deformation [1]. There have been no cases of collapse or overturn of isolated buildings under earthquake action so far, it is necessary to study the damage of isolation bearing and the effect of the failure of isolation layer on the collapse of the structure in strong earthquakes. We thought that when the deformation of the isolator in horizontal direction was more than 350%, the internal rubber and steel plate would break away and destroy. With the increase of the depth-width ratio, the overturning moment of the structure increases gradually, which can cause the eccentricity of the isolation layer, and the local isolation bearing may be damaged by the tensile force
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