【摘要】 影响CFG桩(Cem ent F lyash G ravel P ile)复合地基的沉降变形因素较多。本文应用有限差分(FLAC3D)程序,对褥垫层、荷载、桩长、桩土模量比,置换率、桩周土和桩端土模量比以及桩群等影响沉降的因素进行了系统的分析,分析了这些因素与沉降的内在联系,得到减小复合地基沉降的方法和措施,对实际工程优化设计有一定的借鉴作用。更多还原

【Abstract】 There are many factors affecting settlement and deformation of CFG pile composite foundation.In this paper,with the use of the finite difference analysis package FLAC-3D,these factors are analyzed systematically,including the cushioning layer,load,length of pile,modulus ratio of pile and soil,replacement ratio,modulus ratio of the soil around the pile and the soil under the pile tip,pile group and so on.The relationship between settlement and those factors are discussed,and the methods or measurements of reducing settlement are suggested.It is a useful reference for the practical engineering optimization design.更多还原