论文部分内容阅读
建立天然地基、复合地基的有限差分数值模型,对天然地基、GC单桩加固复合地基和GC与CFG桩组合加固复合地基在地震荷载作用下的抗液化特性进行模拟分析。结果表明:超孔压比可作为天然地基液化和复合地基抗液化效果的判别依据;GC桩的排水作用范围距桩心约2 m,改变设计桩径对超孔压比变化规律影响不大;CFG桩的设置有助于复合地基抗液化能力的提高。
The finite difference numerical model of natural foundations and composite foundations is established. The liquefaction resistance characteristics of natural foundation, GC single-pile reinforced composite foundation and GC-CFG pile composite reinforced composite foundation under earthquake load are simulated. The results show that the excess pore pressure ratio can be used as the discrimination criterion for liquefaction and composite liquefaction resistance of natural foundations. The drainage range of GC pile is about 2 m away from the pile center. The change of designed pile diameter has little effect on the variation law of excess pore water pressure ratio. The CFG pile arrangement helps to improve the liquefaction resistance of the composite foundation.