论文部分内容阅读
基于高位隔震结构的动力特性及影响高位隔震结构隔震效果的主要参数——频率比、质量比,介绍了地震波的选取及输入方式和高位隔震结构隔震层、隔震层以上结构、隔震层以下结构的抗震性能目标,以及振型分解反应谱法中隔震支座等效刚度的计算方法。采用ETABS软件对高位隔震结构进行计算分析,采用ETABS中Link单元模拟隔震支座,进行了非线性时程法及振型分解反应谱法分析,同时采用了PKPM等效剪切刚度的计算方法。经过分析,高位隔震结构隔震层以上结构可按降低一度进行设计,隔震层、隔震层以下结构能够达到预期抗震设防目标,并验证了PKPM简化计算方法的可行性。
Based on the dynamic characteristics of the high isolation structure and the main parameters affecting the isolation effect of the high isolation structure - frequency ratio and mass ratio, the selection and input methods of seismic waves and isolation methods of the high isolation structure, isolation structure above the isolation layer , The seismic performance of the following structure of the isolation layer, and the calculation method of the equivalent stiffness of the isolation bearing in the mode decomposition response spectrum method. ETABS software is used to calculate and analyze the high-isolation structure. The isolation unit is simulated by Link unit in ETABS. The nonlinear time-history method and the mode-splitting response spectrum method are used. Meanwhile, the equivalent shear stiffness method. After analysis, the structure above the isolation structure of the high isolation structure can be designed to reduce once. The following structures of the isolation layer and isolation layer can achieve the expected seismic fortification objectives, and verify the feasibility of PKPM simplified calculation method.