Mechanical properties of air spring-lead rubber bearing three-dimensional seismic isolation device
To improve the ability of seismic isolation of flexible building structures,an air spring-lead rubber bearing(AS-LRB)three-dimensional seismic isolation device with both horizontal and vertical seismic isola-tion was proposed.The structure of the three-dimensional seismic isolation device was introduced,and the horizontal and vertical mechanical properties of the three-dimensional seismic isolation device were experimen-tally studied.In addition,the calculation method of the horizontal and vertical mechanical properties of the three-dimensional seismic isolation device was proposed.The research results show that the three-dimensional seismic isolation device uses an air spring(AS)for vertical seismic isolation and lead rubber bearing(LRB)for horizontal seismic isolation.The load-displacement curve of vertical seismic isolation exhibits nonlinear characteristics,and its vertical mechanical properties are obviously affected by the air pressure of the AS.The energy consumption capacity of horizontal seismic isolation is strong,and its horizontal mechanical properties are obviously affected by the loading amplitude and the air pressure of the AS.Through comparison with the test results,the proposed calculation method can accurately calculate the horizontal and vertical mechanical properties of the three-dimensional seismic isolation device.
air springlead rubber bearingthree-dimensional seismic isolationmechanical propertiesex-perimental researchcalculation method
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