考虑结构—地基相互作用的水闸动力特性及地震反应分析

Seismic response analysis of sluice taking into consideration of structure-soil interaction

在进行水闸动力特性及地震反应分析时,考虑了结构—地基的相互作用。分析了地基弹性模量、地基范围和地基质量对水闸体系动力特性的影响,且对地震波作用下,水闸地基为线性及非线性时的动力反应作了比较。认为,水闸体系的抗震分析宜考虑结构—地基的相互作用以及水闸体系的空间性。

Studies on characteristics and seismic responses of the sluice by 3-D dynamic analysis taking into consideration of structure-soil interaction by finite element method are conducted in this paper. The influences of soil stiffness, soil range and nonlinearity of soil on the dynamic characteristics and seismic responses of the sluice system are discussed. The following conclusions are drawn: 1. The influence of structure-soil interaction on the dynamic characteristics and seismic responses of the sluice are quite significant. 2. Generally, the sluice system can be analysed as a linearly elastic system except for sluice on soft or under strong earthquake.