【摘要】 该文以CFG桩复合地基在爆破地震作用下的现场动力试验为背景,应用有限元软件建立有限元动力分析的数值模拟模型,从水平加速度、竖向加速度、水平位移、竖向位移及应力几个方面对复合地基同一位置不同深度和同一深度不同位置的动力响应进行了分析,其分析结果与试验结果吻合较好。通过数值模拟对动力响应的影响因素进行了比较研究。并与天然地基的动力响应结果进行对比,得出了有指导意义的结论。为今后探讨CFG桩复合地基的承载力、变形和动力特性提供了研究基础。更多还原

【Abstract】 Through CFG pile composite foundation dynamic test,a test model was built by using finite element analysis software.The analyses were made for the horizontal acceleration,vertical acceleration,horizontal displacement,vertical displacement and stress,which were dynamic response about the same position different depth and the same depth different locations.The analysis results of the dynamic response were in good agreement with the test results.The factors of dynamic response were studied by numerical simulation.Compared with the dynamic response results of natural foundation,we obtained the conclusions in guiding the significance.A basis is supplied for load bearing capacity,deformation and dynamic characteristics of a CFG pile composite foundation.更多还原