一、引言核电站结构的地面运动输入是根据反应谱确定的,并且结构设计的抗震分析通常也由反应谱法给出。在管道和设备设计时还需要楼板的反应谱,只要输给结构的时程是有效的,就可以利用结构的时程分析来生成这些反应谱。对于安装在直接对地震进行反应的支撑结构上的设备而言,已提出了许多不同的简 I. INTRODUCTION The ground movement input of the nuclear power plant structure is determined based on the response spectrum, and the seismic design of the structural design is usually given by the response spectrum method. In the piping and equipment design, the response spectrum of the floor is also needed. As long as the time history of the output to the structure is valid, the response spectrum of the structure can be used to generate these response spectra. For equipment installed on a support structure that directly responds to earthquakes, many different simplifications have been proposed.