【摘要】 岩溶区地质条件复杂,采用土-结构动力相互作用的方法,探讨一些特殊的地质条件对上部结构的地震反应影响,对岩溶区的建筑抗震研究具有重要意义。研究表明:岩溶地基中土洞的发育会使土层对地震波的放大效应增强,导致上部结构位移和剪力增加;与垂向分布土洞的工况相比,当土洞水平分布时,岩溶地基上部框架结构地震反应更强,框架结构位移和剪力较大。更多还原

【Abstract】 The geological conditions of karst there is complex. In this paper,with the method of pile- soil- structure dynamil intevaction to discuss some special geological on setsmice response of the upper structure hos the important meanning for the research of the luve area building seismic This study shows that: the soil caves can enhance the amplification for the soil of karstic area and so that makes internal force and displacement of structure to be larger; Compared with the condition of soil cave vertical distribution,the seismic responses of structure could be more stronger in the condition of soil cave horizontal distribution,the shear and the displacement of structure is larger更多还原