摘要
通过应用Abaqus软件建模,分析了9种不同隧道直径、埋深对开挖面失稳模式的影响。对比分析发现,在开挖面失稳状态下,地表沉降为先增后减的沉降槽,开挖面前方的土体以水平位移为主,且随着远离开挖面而逐渐减小。隧道埋深的增加或者隧道直径的增加均会使地表沉降的范围和最值增大,使开挖面前方土体水平位移最值增大。分析结果可为类似工程提供参考。
Through the application of Abaqus modeling, the influence of 9 different tunnel diameters and buried depths on the instability mode of excavation face is analyzed. The comparative analysis finds that in the state of instability of the excavation face, the ground surface settlement is a settlement groove that increases first and then decreases. The soil in front of the excavation face mainly presents horizontal displacement, and displacement gradually decreases as it moves away from the excavation face. The increase of tunnel depth or tunnel diameter will increase the range and maximum value of the ground settlement, and increase the maximum value of the horizontal displacement of soil in front of the excavation face. The analysis results can provide reference for similar projects.
作者
张阿晋
张学进
ZHANG Ajin;ZHANG Xujin(Engineering General Institute of Shanghai Construction Group,Shanghai 201114,China;Shanghai Construction Group Co.,Ltd.,Shanghai 200080,China)
出处
《建筑施工》
2020年第6期1066-1068,共3页
Building Construction
基金
上海市科学技术委员会科研计划项目(18DZ1205106)。
关键词
Abaqus建模
盾构隧道
开挖面失稳模式
地表沉降
隧道直径
隧道埋深
Abaqus modeling
shield tunnel
instability mode of excavation face
ground surface settlement
tunnel diameter
tunnel depth
