摘要
基于CRH380A列车车辆-轨道系统的动载特征,以河南某采空区为工程依托,研究线路轨道与采空走向不同夹角θ下地表沉降规律。结果表明:随着θ的增加,沉降槽宽度和车辆荷载影响范围呈现出在沿采空区倾向主断面上增加,在走向主断面上减小;最大附加沉降值在不同θ时则较为接近。自列车中心向外,当θ自0°~90°增加时,附加沉降曲线影响范围在倾向主断面与走向主断面上分别呈现出增加及减小的趋势;同时,θ自0°~90°增加时沉降曲线形状在倾向主断面上有深“V”形至“U”形,在走向主断面上有“U”形至深“V”形变化规律。
Based on the dynamic load characteristics of CRH380A railway-track system, relying on a goaf engineering in Henan Province, the ground subsidence laws under different included angles θ between the line track and the goaf strike are studied. The results show that with the increase of the angle θ, the width of the settlement trough and the area affected by the vehicle load increase along the main section of the goaf trend and decrease along the main section of the goaf trend;the maximum additional settlement value is close at different θ.From the center of the train to the outside, when the θ increases from 0° to 90°, the influence area of the additional settlement curve shows an increasing and decreasing trend on the main inclined section and the main inclined section respectively. At the same time, when the θ increases from 0° to 90°, the shape of the settlement curve has a deep “V”sahpe to “U” shape on the dip main section, and a “U”shape to deep “V” shape change rule on the strike main section.
作者
张兴胜
谭海成
干丰源
董金玉
ZHANG Xingsheng;TAN Haicheng;GAN Fengyuan;DONG Jinyu(College of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Henan Provincial Highway Engineering Bureau Group Co.,Ltd.,Zhengzhou 450052,China)
出处
《路基工程》
2023年第1期222-227,共6页
Subgrade Engineering
基金
河南省重点科技攻关项目(202102310018,192102310267)。
关键词
高速列车荷载
采空区
不同夹角
沉降变形
沉降槽
high-speed railway load
goaf
different included angles
settlement deformation
settlement trough
作者简介
张兴胜(1978−),男,河南濮阳人。副教授,博士,主要从事地面沉降地质灾害研究、教学工作。E-mail:xingsheng.zhang@ncwu.edu.cn。
