An new elastic-plastic analytical solution of circular tunnel under non-axisymmetric conditions.

ABSTRACT: The surrounding rock is in the initial stress state before the tunnel excavation, and it undergoes the stress redistribution to reach the secondary stress state after the tunnel excavation. The surrounding rock is not only the main load source but also is an important part of the load bearing structure. Once the stress of some zone in the surrounding rock exceeds the strength of the rock mass, the part surrounding rock will enter into a state of plasticity or failure. Analytical solution is the most powerful mean to analyze this kind of underground cavern engineering problems. However, the existing solutions can not directly or simultaneously obtain the secondary stress field and excavation disturbance displacement field that we are concerned about. The implicit approximate solution cannot

SUBMITTER: Li G 

PROVIDER: S-EPMC8921244 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature