Limit support pressure at excavation face of shield tunnels
XU Qian-wei1, TANG Zhuo-hua2, ZHU He-hua3, WANG Gguo-fu2, LU Lin-hai2
1. Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 201804, China; 2. Jinan Rail Transit Group Co., Ltd., Jinan 250101, China; 3. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China
Abstract：According to the limit support pressure at excavation face of shield tunnels, the principles for calculating the covered earth pressure of tunnels in different strata are proposed by comparing the theoretical calculation with the field measurement, and the limit state equation for excavation face stability is deduced by using the slice method to analyze the excavation face stability of shield tunnels. Hereby, the limit support pressure at excavation face of shield tunnel can be solved. Finally, based on the specific engineering practice, the aforementioned theories and methods are used in searching the critical sliding surface and calculating the limit support pressure. The research results are important in guiding the design and construction of shield tunnels.
徐前卫,唐卓华,朱合华,王国富,路林海. 盾构隧道开挖面极限支护压力研究[J]. 岩土工程学报, 2017, 39(7): 1234-1240.
XU Qian-wei, TANG Zhuo-hua, ZHU He-hua, WANG Gguo-fu, LU Lin-hai. Limit support pressure at excavation face of shield tunnels. Chinese J. Geot. Eng., 2017, 39(7): 1234-1240.
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