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采用边界元法结合斜面分布荷载格林函数计算了水平层状半空间中的埋置刚性基础在入射P波,SV波和SH波作用下的动力响应,研究了场地动力特性对土-基础动力相互作用的影响。分析表明,层状半空间中土-基础相互作用的机理和均匀半空间有很大区别,且层状半空间中的土-基础相互作用大于均匀半空间中的土-基础相互作用;基础动力特性和场地动力特性较为相似,且土层厚度和刚度对基础动力响应的影响较大,而基础质量的影响则较小;土-基础相互作用的基本规律和土-基础-地上结构相互作用的基本规律相差较大,而与土-地下隧道相互作用则较为相似。
The dynamic response of embedded rigid foundation in horizontal layered half-space to incident P-wave, SV-wave and SH-wave is calculated by the boundary element method and the Green’s function of the bevel distribution load. The effect of the dynamic characteristics of the site on the interaction between soil- Effect of the effect. The analysis shows that the mechanism of soil-base interaction in layered half-space is quite different from that of homogeneous half-space, and the soil-base interaction in layered half-space is larger than that in homogeneous half-space. The characteristics and the dynamic characteristics of the site are similar, and the influence of the thickness and stiffness of the soil layer on the foundation dynamic response is greater, while the impact of the foundation quality is smaller. The basic law of soil-foundation interaction and the soil-foundation-ground structure interaction The basic law is quite different, but the interaction with soil-underground tunnel is more similar.