摘要
以朔黄铁路既有重载铁路路基斜向注浆挤密桩加固为研究对象,针对不同斜向注浆挤密桩布设参数,运用有限元模拟软件Abaqus,对路基的加固效果进行分析研究。结果表明:铁路路基的竖向变形,随着挤密桩角度的增加先增强后减弱,随着挤密桩间距增大而减弱;铁路路基变形呈“W”形,在布设挤密桩后变形位移差值减小。
Taking the oblique grouting compaction pile reinforcement of existing heavy-haul railway subgrade of Shuozhou—Huanghua Railway as the research object,the finite element simulation software ABAQUS is used to analyze and study the reinforcement effect of subgrade according to different oblique grouting compaction pile layout parameters.The results show that the vertical deformation of railway subgrade increases first and then decreases with the increase of compacted pile angle,and decreases with the increase of compacted pile spacing.The deformation of railway subgrade is in the shape of"W",and the difference of deformation and displacement decreases after the compaction pile is laid.
作者
徐炳辉
牛建东
李锐
朱丽
聂如松
雷明锋
XU Binghui;NIU Jiandong;LI Rui;ZHU Li;NIE Rusong;LEI Mingfeng(Shuozhou—Huanghua Railway Development Co.,Ltd.,Beijing 100000,China;School of Civil Engineering,Central South University,Changsha 410075,China;Key Laboratory of Engineering Structure of Heavy Haul Railway of Ministry of Education,Changsha 410075,China)
出处
《路基工程》
2022年第4期132-135,共4页
Subgrade Engineering
基金
朔黄铁路发展有限责任公司科技创新项目(SHTL-19-21)
中南大学中央高校基础研究基金(2020zzts619)。
关键词
既有重载铁路
病害路基加固
斜向注浆挤密桩
数值模拟
布设参数
角度
间距
竖向变形
existing heavy-haul railway
diseased roadbed reinforcement
oblique grouting compaction pile
numerical simulation
layout parameters
angle
spacing
vertical deformation
