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对 Duhamel积分引入了改进的脉冲响应函数 ,建立了激励演变谱矩阵与总动力响应演变谱之间的关系 ,并对实际大跨度斜拉桥进行了数值计算。这一成果实现了全面考虑各种地震动时空变化特性下的直接求解结构总动力响应的时域法和频域法计算列式 ,使得地震动多点激励下考虑拟静力位移影响的结构响应计算过程大为简化。
The improved impulse response function is introduced into Duhamel integral, and the relationship between excitation evolution spectrum matrix and total dynamic response evolution spectrum is established. The actual long-span cable-stayed bridge is numerically calculated. This achievement realizes the time-series method and frequency-domain calculation formula that directly consider the total dynamic response of structures under various temporal and spatial variations of ground motions, so that the structural response considering quasi-static displacement under multi-point excitation of ground motion The calculation process is greatly simplified.