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为探讨具有NES的复合摩擦摆隔震性能,采用ABAQUS软件对一幢三层框架结构进行有限元模拟分析,选取EL-Centro波、Accel人工波、Taft波,计算结构在不同震级、不同加速度峰值地震作用下的响应,并对隔震前后结构的动力反应进行对比.分析结果表明:具有NES的复合摩擦摆隔震支座可以有效地减小结构在地震作用下的加速度响应,并使结构产生整体平移,减小了结构的层间位移角,同时增大了结构自振周期,远离了一般场地的卓越周期,结构可以快速有效地吸收消耗地震能,将地震能更多地转化掉,从而达到隔震的效果.
In order to investigate the seismic isolation performance of composite friction pendulum with NES, a three-layer frame structure was simulated by ABAQUS software. The EL-Centro wave, Accel artificial wave and Taft wave were selected to calculate the structure’s seismic response at different magnitudes, Seismic response and the dynamic response of the structure before and after isolation are compared.The analysis results show that the compound friction pendulum bearing with NES can effectively reduce the acceleration response of the structure under earthquake and make the structure produce The overall translation reduces the interlayer drift angle of the structure and increases the natural period of the structure, which is far away from the excellent period of the general site. The structure can absorb and dissipate the earthquake energy quickly and effectively and can convert more earthquakes to Achieve the effect of isolation.