【摘要】 文中简要综述并分析了当前应用于土体动力反应分析中的Seed简化方法和以20周等幅循环荷载为基础的转换方法,讨论了其适用性和局限性。同时,对国内外有关随机的、不规则地震荷载作用下土体动力特性问题的一些有代表性和方向性研究成果进行了梳理和总结,指出,目前的研究成果多侧重于定性地揭示不规则动应力作用对土强度变形的影响,而不规则波作用下孔压增长模型和土体残余变形增长模型还有待更多研究。更多还原

【Abstract】 The current applications of Seed’s method and 20 cycles method are reviewed and analyzed in soil dynamic response analysis.It also discusses their applicability and limitations.Meanwhile,some representative and directional research achievements on soil dynamic characteristics under the both random,irregular seismic loads at home and abroad have been summarized.Current research achievement mainly focuses on qualitatively revealing the influence of irregular dynamic stress on soil intensity deformation,while more researches on the pore pressure growth model and residual deformation growth model under irregular waves are needed.更多还原