结构系统地震动输入模式与相关问题的几点讨论

Discussion on ground motion input modes of structural system and the related issues

针对单自由度结构系统,定性讨论了一致地震动输入模式之间的关系、对体系响应的影响及相关问题。主要结论为:一致地震动输入的位移与加速度之间必须较好地满足运动学关系;宜采用位移输入模式计算长周期体系的地震响应;宜采用加速度输入模式计算短周期体系的地震响应。

For the single degree of freedom structural systems, the paper qualitatively discusses about the relations of the consistent ground motion input modes, their effects on system response, and the related issues. Primary conclusions are ： the displacement and acceleration input modes of the consistent ground motion must well satisfy the ki- nematic relations ; the displacement input mode is proper for calculating seismic response of long period system ; the acceleration input mode is proper for calculating seismic response of short period system.