铁路交通荷载下桩承式路堤承载性状分析  

Analysis of Bearing Behavior on Pile-supported Embankment under Railway Vehicle Load

作　　者：刘迪 LIU Di(The 5th Engineering Co.,Ltd.of China Railway 18th Bureau Group,Tianjin 300459,China)

机构地区：[1]中铁十八局集团第五工程有限公司,天津300459

出　　处：《路基工程》2023年第3期138-142,共5页Subgrade Engineering

摘　　要：依托某铁路桩承式路堤工程,通过室内桩-土剪切试验,分析水泥土桩-土接触面的摩擦系数在不同界面粗糙度、水泥掺入比和土体含水率下的变化规律,得出适应不同工况的摩擦系数。采用ABAQUS软件,对不同车辆速度和车辆荷载作用下桩承式路堤的承载性能和路堤沉降进行研究,得出桩和桩间土的荷载分布规律及桩顶、桩间土和路面最大沉降的变化规律。Based on a railway pile-bearing embankment project,it analyzes the change law of the friction coefficient under different interface roughness,cement-soil ratio and soil moisture content thorough indoor pilesoil shear experiments,and obtains the friction coefficients adapted to different working conditions.It studies the bearing performance and embankment settlement of pile-supported embankment under different vehicle speed and vehicle load by ABAQUS software,and concludes the load distribution law of piles and soil between piles and the change law of the maximum settlement of pile top,soil between piles and road surface are obtained.

关 键 词：铁路交通荷载 桩承式路堤 水泥土桩 承载性状 路基沉降 

分 类 号：U213.11[交通运输工程—道路与铁道工程]