【摘要】 本文给出了以目标反应谱和目标包线函数为双目标函数的人工地震动合成方法,不仅使人工地震动符合目标反应谱,还在迭代过程中对地震动波形进行调整,使之基本符合目标包线函数,并消除了加速度时程的基线偏移,使速度时程和位移时程更为合理。本文认为当研究非线性结构体系的动力反应规律时,有必要对输入的人工地震动时程的反应谱和包线均进行比较准确的控制,使人工地震动时程符合多个统计特征。更多还原

【Abstract】 The authors put forward a method that takes the response spectrum and the enveloping curve as the double target functions to synthesize the artificial ground motion.The method not only makes the response spectrum of the artificial ground motion comply with the target spectrum,but also in the iterative process adjusts the ground motion wave-shape to conform to the goal enveloping curve function approximately,and eliminates the base-line shift in the acceleration time history,then makes the velocity and displacement time histories of ground motion more reasonable.The authors argue that it may be necessary to make the artificial ground motions accord with both the target response spectrum and the target enveloping function,when the dynamic response characteristics of certain nonlinear structural system are studied.更多还原