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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4696
Title: Three-dimensional joint/interface element for rough undulating major discontinuities in rock masses
Authors: Samadhiya, Narendra Kumar
Viladkar M.N.
Al-Obaydi M.A.
Published in: International Journal of Geomechanics
Abstract: Major civil engineering structures are being constructed now a days in complex geological environment with faults, shear zones, and other major discontinuities. These major discontinuities can cause a variety of problems in both surface and underground constructions. Unfavorably dipping major discontinuities may create unstable conditions in underground openings and contribute to the deformations of a rock mass under external static loading. Hence, rock-structure interaction analysis should simulate arbitrarily oriented rough and undulating major discontinuities within the rock mass, as well as the undulating interface along the structure and the rock mass such as dam foundations and underground excavations intersected by fault/shear zones. Realistic simulation of the mechanical behavior of rock joints is a prerequisite for successful numerical modeling of discontinuous rocks. When joint modeling is designed to include different degrees of joint roughness, dilation, and aperture, then realistic response depends upon the appropriate constitutive models and the way these parameters interact with stress change. Due to low values of the normal and tangential module, a unique characteristic of a rock discontinuity is that dilation may occur as soon as relative slip takes place and this may significantly alter the stress distribution, particularly around an underground excavation. In view of these practical requirements, a generalized formulation of a three-dimensional joint/interface element has been proposed here to account for dilatancy, roughness, and undulating surface of discontinuities. ¬© 2008 ASCE, ISSN.
Citation: International Journal of Geomechanics(2008), 8(6): 327-335
URI: https://doi.org/10.1061/(ASCE)1532-3641(2008)8:6(327)
http://repository.iitr.ac.in/handle/123456789/4696
Issue Date: 2008
Keywords: Dilatancy
Discontinuities
Excavation
Geological faults
Interface
Rock masses
Roughness
ISSN: 15323641
Author Scopus IDs: 6506534111
6701684084
23982032400
Author Affiliations: Samadhiya, N.K., Dept. of Civil Engineering, Indian Institute of Technology, Roorkee, Roorkee 247667, India
Viladkar, M.N., Dept. of Civil Engineering, College of Engineering, Univ. of Mosul, Mosul, Iraq
Al-Obaydi, M.A., Dept. of Civil Engineering, College of Engineering, Univ. of Mosul, Mosul, Iraq
Corresponding Author: Samadhiya, N.K.; Dept. of Civil Engineering, Indian Institute of Technology, Roorkee, Roorkee 247667, India; email: nksamfce@iitr.ernet.in
Appears in Collections:Journal Publications [CE]

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