The Practical Modelling of Discontinuous Rock Masses with Finite Element Analysis

The mechanical response of rock masses to loading and excavation, especially in low stress environments, is significantly affected by discontinuities. This paper examines the practical modelling of rock mass problems with explicit representation of discontinuities using special joint elements in the Finite Element Method. The paper discusses why it is possible to use this approach for routine, practical engineering analysis today. Through a few examples, it also presents the merits of the approach such as the ability to capture a range of mechanisms and scale effects due to discontinuities.

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