Analysis of plastic zone boundary of circular tunnel under the asymmetric load

DOI

10.2991/icadme-15.2015.216How to use a DOI?

Keywords

Circular tunnel; plastic zone; lateral pressure coefficient; Mohr Coulomb criterion

Abstract

In order to study the stress distribution features of the surrounding rocks a long the circle tunnel after the roadway excavated and the radius size of there leased circle, first analysis of the stress distribution characteristics of the surrounding rock, on this basis, circular tunnel for the elastic and plastic zone is derived based on the mohr coulomb strength criterion. The plastic zone in the surrounding rock of the tunnel under the conditions of different side pressure, different stress, different cohesion and different friction angle was obtained with the theoretical calculation. The evolution of the plastic zone is summed up from plastic zone equation. The lateral pressure coefficient has a great influence on plastic radius; with the increase of stress, the plastic zone increases; with the cohesion increases the plastic zone reduced; with the cohesion increases the plastic zone reduced.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Chao Ke Liu
AU  - Jian Xi Ren
PY  - 2015/10
DA  - 2015/10
TI  - Analysis of plastic zone boundary of circular tunnel under the asymmetric load
BT  - Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering
PB  - Atlantis Press
SP  - 1174
EP  - 1178
SN  - 2352-5401
UR  - https://doi.org/10.2991/icadme-15.2015.216
DO  - 10.2991/icadme-15.2015.216
ID  - Liu2015/10
ER  -