LONG-DURATION LOADING TEST ON LEAD RUBBER BEARINGS CONSIDERING WIND LOAD

To grasp the effects of creep characteristics and rising temperatures on lead rubber bearings under wind load, long-duration cyclic loading tests and real-time online tests were conducted. From the loading tests, the lateral restoring characteristics of the lead rubber bearings in the small deformation range considering the creep characteristics were obtained. Analytical results using a simplified estimation method considering the small deformation characteristics of lead rubber bearings agreed well with the test results. From the online tests, the response properties of a base-isolated building under wind load were experimentally verified, and the validity of the modeling approach for lead rubber bearings and the wind response analysis method were confirmed.