Centrifuge modeling of ground loss and settlement caused by shield tunnelling in soft ground
MA Xian-feng1, 2, WANG Jun-song2 , LI Xiao-yun2 ,YU Long3
1. Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3. Shanghai Tunnel Engineering ＆ Rail Transit Design and Research Institute, Shanghai 200070, China
Abstract：Recently, a large number of shield tunnels were built in the areas with dense buildings and protected buildings and those vulnerable to ground deformation, thus predicting and controlling the surface settlement induced by shield tunnelling has become a serious problem to be addressed. Since ground loss during the construction process of shield tunnels is one of the main factors causing the surface settlement, its effects are simulated using centrifugal model tests, and the relations between the rate of ground loss and surface settlement are studied during the construction and post-construction periods. The longitudinal behaviours of the tunnels are also studied by measuring and analyzing their longitudinal settlement, stress and strain, and surrounding earth pressure.
马险峰, 王俊淞, 李削云, 余龙. 盾构隧道引起地层损失和地表沉降的离心模型试验研究[J]. 岩土工程学报, 2012, 34(5): 942-947.
MA Xian-feng , , WANG Jun-song , LI Xiao-yun ,YU Long. Centrifuge modeling of ground loss and settlement caused by shield tunnelling in soft ground. Chinese J. Geot. Eng., 2012, 34(5): 942-947.
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