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Type: Conference paper
Title: Developing a generalized multiple-step loading damage model to predict rock behaviour during multiple-step loading triaxial compression test
Author: Taheri, A.
Tani, K.
Citation: Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering, 2009 / Hamza, M., Shahien, M., El-Mossallamy, Y. (ed./s), vol.1, pp.429-432
Publisher: IOS Press
Issue Date: 2009
ISBN: 9781607500315
Conference Name: 17th International Conference on Soil Mechanics and Geotechnical Engineering (ICSMGE) (5 Oct 2009 - 9 Oct 2009 : Alexandria, Egypt)
Editor: Hamza, M.
Shahien, M.
El-Mossallamy, Y.
Statement of
A, Taheri, K.Tani
Abstract: Multiple-step Loading Triaxial Compression Test (ML-TCT) method is a useful tool to evaluate strength parameters from a single specimen. However, because of accumulated damage in the specimen with repeated cycles of axial loading/unloading, the shear strength is prone to be underestimated. Therefore, considering two models which were previously developed for a siltstone and a mudstone, a generalized Multiple-step Loading Damage (MLD) model was developed to simulate ML-TCTs with various stress paths. Numerical simulations of generalized MLD model indicated that the margin between shear strength parameters determined by Single-step Loading Triaxial Compression Tests (SL-TCT) and ML-TCTs, increase with increasing rock strength. Moreover, the upper bound values for c′ and lower bound values for ф′ could be resulted for ML-TCTs with confining pressure in increasing manner. Whereas, the upper bound values for ф′ and lower bound values for c′ can be obtained for decreasing manner tests.
Keywords: multiple-step loading; triaxial compresion test; damage model; rock
Rights: © 2009 IOS Press. This work is licensed under a creative commons license
DOI: 10.3233/978-1-60750-031-5-429
Appears in Collections:Aurora harvest 3
Civil and Environmental Engineering publications

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