路桥过渡段软土地基侧向流动规律及影响研究

为研究CFG桩地基加固下的路桥过渡段软土地基的侧向流动规律，并探究其对桥梁基桩受力变形的影响，运用数值模拟，对不同CFG桩加固下路桥过渡段地基内部软土地基侧向流动、基桩受力变形情况进行对比研究。结果表明:软土地基侧向流动程度较大，且会对基桩的受力产生较大影响，增大基桩的水平位移。设置CFG地基加固桩有利于减小软土地基侧向流动，从而减小对桥梁基桩受力变形的影响。

Study on Law and Influence of Lateral Flow of Soft Soil Foundation in Road-Bridge Transition Section

In order to study the law of lateral flow of soft soil foundation in case of CFG pile reinforcement in road-bridge transition section and the influence on the force and deformation of bridge piles, the lateral flow in the transition section in various cases of CFG pile reinforcement, and the force and deformation of the piles were compared and studied by means of numerical simulation. The result shows that, the soft soil foundation is subject to large extent of lateral flow, affecting the force in the foundation piles greatly and then increasing the horizontal displacement of the piles; the arrangement of CFG piles for reinforcement may be helpful to reduce the lateral flow, and then to decrease the impact on the force and deformation of bridge piles.