盾构隧道开挖面极限支护压力研究  

Limit support pressure at excavation face of shield tunnels

作　　者：徐前卫[1] 唐卓华 朱合华[3] 王国富 路林海 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]济南轨道交通集团有限公司,山东济南250101 [3]同济大学岩土及地下工程教育部重点实验室,上海200092

出　　处：《岩土工程学报》2017年第7期1234-1240,共7页Chinese Journal of Geotechnical Engineering

基　　金：国家重点基础研究发展计划("973"计划)(2011CB013800);长江学者奖励计划(IRT1029);国家自然科学基金项目(41672360)

摘　　要：针对盾构隧道开挖面稳定的极限支护压力,通过理论计算与现场实测的对比分析,提出了不同地层隧道上覆土压力的计算原则,将条分法的思想引入盾构开挖面的稳定性分析,导出了开挖面稳定的极限状态方程,据此可求得盾构隧道开挖面稳定的极限支护压力。最后,结合具体的工程实践,将前述理论和方法应用于临界滑动面的搜索和极限支护压力的计算。上述研究成果对于指导盾构隧道的设计与施工具有重要的作用。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.

关 键 词：盾构隧道 开挖面稳定性 上覆土压力 极限支护压力 

分 类 号：TU43[建筑科学—岩土工程]