【摘要】 随着我国西部开发中水利水电工程建设的展开,有关软土中的输水隧道的抗震安全问题益见重要。这里重点研究了水体的几种简化模型在软土浅埋输水隧道的地震反应分析中的应用。分别采用水体的不同简化方法(等效密度、Housner模型、Westergaard公式)与水体假设为势流体时的流-固耦合的水固统一模型对一实际输水隧道进行地震反应分析。数值分析结果显示:不论采用水体的简化模型还是采用势流体的流-固耦合模型,其结果均相差不大。更多还原

【Abstract】 With large scale development of West China,seismic safety problem of conveyance-water tunnel in soft soil is more and more important.The calculated seismic response of conveyance-water tunnel using fluid simplified models(equivalent density,Housner model,Westergaard formula) is in contrast with the analysis result by means of fluid-structure coupling model of potential model.Numerical results show that the fluid simplified model or fluid-structure coupling model of potential fluid,their results dis-crepancy is smaller.更多还原