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中文摘要：
利用SAP2000大型有限元软件对某大底盘隔振结构进行了地震响应分析,结果表明橡胶支座能够有效降低结构的地震响应,但在El Centro波罕遇地震作用下,橡胶支座由于相对位移过大而发生受拉破坏,导致隔震效果失效。为解决此类问题,利用所提出的新型压电摩擦阻尼器,结合SIMULINK所编制的模糊控制系统,对该大底盘隔振结构进行了有效的混合控制,其中在El Centro波8度罕遇地震作用下,隔震层处位移最大降幅为0.173 m,满足规范对于隔震层相对位移小于0.150 m的要求,避免了橡胶支座由于受拉而导致破坏的问题,从而有效的提高了此类结构的抗震安全及可靠性。
英文摘要：
The seismic response analysis was conducted on an isolated structure with large-chassis by using the finite element software SAP2000. The results indicate that under El Centro wave in rare earthquakes,the rubber bearing is prone to tensile failure due to large relative displacement,therefore leads to the failure of the whole isolated structure. In order to solve this problem,a new piezoelectric friction damper was adopted to control this isolated structure with large-chassis in the combination of the fuzzy control system developed using SIMULINK. According to the results,the displacement of the isolation layer reduced up to 0. 173 m,which meets the maximum displacement requirement of 0. 150 m in the specifications. This method solved the problem of tensile failure and improved the seismic safety and reliabilities of this kind of isolated structures.
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