基于ABAQUS研究软土条件下路基填土对桥台桩基的影响  

Research on the Influence of Embankment Fill on Pile Foundation of Bridge Abutment in Soft Soil Based on ABAQUS

作　　者：李克磊[1] 袁有为[1] 

机构地区：[1]天津市市政工程设计研究院,天津市300051

出　　处：《北方交通》2016年第3期26-29,33,共5页Northern Communications

摘　　要：通过应用有限元软件ABAQUS建立软土地基条件下有台后填土时的三维桥台群桩基础模型,分析单桩和桩侧土体竖向相对位移关系、群桩中不同位置桩的桩侧负摩阻力以及填土高度和摩擦系数对桩侧负摩阻力的影响。研究表明填土高度、摩擦系数和单桩所处于群桩中的位置都是桩侧负摩阻力产生变化的原因。The 3D model of bridge abutment and its pile group foundation in soft soil when subjected to embankment fill was built with the finite element software ABAQUS. On this basis,the relationship of vertical displacement between single pile and soil around it,the negative friction on piles at different locations in the pile group and the influence of embankment height and friction coefficient on negative friction on pile were analyzed. It was shown that embankment height,friction coefficient and the location of pile were all reasons of change of negative friction on pile.

关 键 词：软土地基 台后填土 群桩基础 桩侧负摩阻力 

分 类 号：U443.21[建筑科学—桥梁与隧道工程]