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本文用有限元方法模拟了伦敦地铁J.支线分部开挖的施工过程,对各开挖阶段的围岩稳定与喷层、衬砌内力做了分析、预测.其计算结果已被设计者所采用.
In this paper, the finite element method is used to simulate the construction process of the Excavation of the Sub Branch of J. Subway in London, and the analysis and prediction are made for the stability of surrounding rock and the internal forces of spray lining and lining in each excavation stage.The calculation results have been adopted by designers .