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针对一幢位于高烈度地区的超高层结构进行了罕遇地震情况的地震波选取,通过弹塑性时程分析对比了控制周期延长段加速度谱偏差的方法与目前常用的控制主要周期处反应谱偏差的方法的选波效果。控制周期延长段反应谱偏差的方法反映了结构的弹塑性发展,理论上更适用于高烈度地区超高层结构在罕遇地震情况下的地震波选取。时程分析结果也表明,控制周期延长段反应谱偏差的方法较好的控制了结构非线性地震响应的离散性。
Seismic wave selection for rare earthquakes in a high-rise area with high intensity is carried out. Compared with the commonly used methods to control the deviation of the response spectrum at the main period, Method of wave effect. The method of controlling the deviation of the response spectrum of the extended period reflects the elastic-plastic development of the structure and is theoretically more suitable for the selection of seismic waves in the case of rare earthquakes in high-intensity areas. The results of time-history analysis also show that the method of extending the response spectrum of periodic response period can better control the dispersion of nonlinear seismic response.