关键词: 盾构隧洞, 无粘结预应力衬砌, 高内水压, 有限元分析

Abstract: In order to accurately calculate the stress of non-cohesive pre-stressed lining of shield tunnel under high internal water pressure, based on mechanism of annular pre-stressed, theoretical calculation, and finite element software(ABAQUS), we comprehensively analyzed the stress of tunnel lining segments and pre-stressed lining under different working conditions such as construction, operational stage and maintenance stage. The simulation results show that the double-layer and double-circle layout of the steel strand can minimize the size of the liner groove, and also meet the stress requirements of the specification.

Key words: shield tunnel, non-cohesive pre-stressed lining, high internal water pressure, finite element analysis;