摘要
陡坡路基不均匀沉降影响路基稳定性.以内马陡坡路基为工程依托,通过数值计算,分析不同填筑坡率,填筑高度、路基填筑的压实度等对陡坡路基不均匀沉降的影响.结果表明路堤坡度对路基变形有一定的影响,路堤坡度越大,路基的不均匀沉降量越大、总沉降量也越大.地基坡度对路基沉降有着显著影响,沉降差异随坡度的增大而增大.填土高度对路基沉降影响较大,随填高增加沉降增加量呈增大趋势且填土越高断面差异变形也越大.填土弹性模量对路堤填土总沉降、路堤填土不均匀沉降影响较大,不均匀沉降随着模量增大而逐渐减小.
Steep foundation uneven settlement affects the stabilization of railway roadbed.Based the field tests and numerical simulation on Neimah railway steep embankment construction the slope ratio,foundation backfill nature,filling height,roadbed compaction degree to steep embankment and it influence on differential settlement were examed.The conclusion shows that embankment slope ratio has some influence on the vertical deformation of sub-grade and the larger differential settlement and larger slope ratio results in the increasing total settlement,ground slope has a significant impact on the subgrade settlement and the differential settlement increases with the increasing slope,filling height has a strong impact on foundation settlement and the greater deformation differences leads to the larger variation of the fill section.Filling the elastic modulus has a strong impact on the total settlement of embank-ment and the embankment differential settlement with the increase of differential settlement modulus gradually de-creases.
作者
蒋正舜
苟志龙
JIANG Zhengshun;GOU Zhilong(CCCC Fourth Harbour Engineering Co.,Ltd.,Guangzhou 510310,China)
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第A01期25-29,共5页
Journal of Hunan University:Natural Sciences
基金
北京市科技计划项目(Z181100003918005)~~
关键词
陡坡路基
不均匀沉降
影响因素
steep slope
uneven settlement
influencing factors
