Assessment of the influence of discontinuity constitutive models for modelling fractured rock masses

G. Cammarata, T.A. Bui, S. Brasile, V. Skordilis, R. Brinkgreve

Research output: Chapter in Book/Conference proceedings/Edited volumeChapterScientificpeer-review

Abstract

Understanding and properly simulating discontinuity mechanical behaviour is crucial in all rock engineering projects. Several constitutive relationships have been proposed and implemented in numerical codes. This paper discusses the results of a numerical study that exam-ines the influence of adopting different rock discontinuity constitutive models for simulating the behavior of a fractured rock mass. Two constitutive approaches are employed: an enhanced Cou-lomb-based criterion with strain softening and a modified version of the Barton-Bandis model to overcome potential implementation issues. These models have been implemented in PLAXIS and their performance is inspected through numerical analyses of an underground cavity for a specific discontinuity network geometry. The results provide insights into the implications and suitability of adopting different discontinuity constitutive models for assessing the stability of engineering works in fractured rock masses.
Original languageEnglish
Title of host publicationNew Challenges in Rock Mechanics and Rock Engineering
EditorsRoberto Tomás, Miguel Cano, Adrián Riquelme, José Luis Pastor, David Benavente, Salvador Ordóñez
Place of PublicationLondon
PublisherTaylor & Francis
Number of pages6
ISBN (Electronic)9781003429234
Publication statusPublished - 2024
EventISRM European Rock Mechanics Symposium 2024: New challenges in rock mechanics and rock engineering - "Aulario II" building of the University of Alicante, Alicante, Spain
Duration: 15 Jun 202419 Jun 2024
https://www.eurock2024.com/

Conference

ConferenceISRM European Rock Mechanics Symposium 2024
Abbreviated titleEUROCK 2024
Country/TerritorySpain
CityAlicante
Period15/06/2419/06/24
Internet address

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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