【摘要】 采用三维有限差分程序FLAC3D(Fast Lagrangian Analysis of Continua)对未加固、碎石桩加固和水泥土桩加固的液化砂土地基进行数值模拟,探讨了碎石桩与水泥土桩加固液化砂土地基的抗液化性能。研究表明碎石桩抗液化能力显著,而水泥土桩抗液化能力十分有限,证实了碎石桩加固液化砂土地基的抗液化效果与桩土共同作用的排水效应直接相关。更多还原

【Abstract】 Natural liquefiable sandy ground and liquefiable sandy ground improved by gravel piles and soil cement piles under earthquake action are numerically simulated by three-dimensional finite difference program "FLAC3D"(Fast Lagrangian analysis of continua),and anti-liquefaction characteristics of gravel piles and soil-cement piles in improving the liquefiable sandy ground are studied.The analysis shows that the gravel piles have remarkable effect to resist liquefaction,while the cement-soil piles have limit effect to resist liquefaction.It is also confirmed that the resisting liquefaction effects and the drainage effects of pile-soil are directly correlative.更多还原