摘要
本文研究了一个用来分析海洋工程场址地震动的方法,它用二维等参数单元把场址土层区域离散,并且把海水层看成二维等深的有表面波的水域。这个方法考虑到海水层对土层区域的动力耦连作用,用随机振动理论求解海底土层区域在基岩地震动输入下的响应。这个方法能较详细地分析海水层对地震动参数的影响。文中给出一个算例,分析了这些影响。
An analysis method of seismic motion at offshore engineering site is presented in this paper. The soil layer under sea water is discretized by finite elements. The sea water layer is considered to be two-dimensional, compressible and with equal deepness. The surface wave is considered. The dynamic reaction forces of the Sea water layer can be derived by Fourier transformation.The responses of the Soil layer are calculated by random vibration theory. An example is given to illustrate the effects of the water.
出处
《地震工程与工程振动》
CSCD
北大核心
1990年第1期81-88,共8页
Earthquake Engineering and Engineering Dynamics
基金
地震科学联合基金
