Ground deformation induced by shield tunneling posture in soft soil

被引：15
|
作者：
Jin, Hui [1 ,2 ,3 ]
Yuan, Dajun [1 ,2 ]
Jin, Dalong [1 ,2 ]
Wu, Jin [4 ]
Wang, Xuyang [1 ,2 ]
Han, Bingyu [1 ,2 ]
Mao, Jiahua [1 ,2 ]
机构：
[1] Beijing Jiaotong Univ, Minist Educ, Key Lab Urban Underground Engn, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China
[3] Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
[4] Suzhou Rail Transit Shiyu Line 1 Co Ltd, Kunshan 215007, Peoples R China
来源：
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY | 2023年 / 139卷
基金：
中国国家自然科学基金;
关键词：
Shield construction; Ground deformation; Shield -soil interaction; Shield posture; Elastic half -space theory; BORING MACHINE; BEHAVIOR; SIMULATION;
D O I：
10.1016/j.tust.2023.105227
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Constructing tunnels in soft soil using shield machines would induce soil deformation. Several factors, such as support pressure, ground loss, grouting pressure may affect the soil deformation. In engineering practice, the ground deformation could also vary with the posture of the shield machine. This study proposed an approach for estimating the soil deformation considering shield posture. Firstly, the shield-soil interaction displacement was obtained by considering shield geometry and its kinematic behavior, such as shield diameter and length, articulation, and shield deviation. Secondly, based on the elastic half-space theory, a calculation method for mapping the shield-soil interaction displacement to soil deformation was established. Finally, the proposed model was verified by the field measurement in the tunnel of Suzhou Metro line S1, and the results confirm that the postures of the shield machine in the soil influence the magnitude, distribution, and evolution of the soil deformation.
引用
收藏
页数：10
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