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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/22067
Title: Foundation Bearing Capacity Estimation on Rock-Mass Using Hoek–Brown Failure Criterion and Equivalent Mohr–Coulomb Parameters
Authors: Prakash S.
Raj D.
Singh, Yogendra C.
Patel S.
Solanki C.H.
Reddy K.R.
Shukla S.K.
Published in: Lecture Notes in Civil Engineering
Indian Geotechnical Conference, IGC 2019
Abstract: In general practice, the shallow foundations serve as economic and reliable solution to support high-rise buildings, bridges, and other heavy structures constructed on rock-mass. The aim of the present study is to simulate fractured homogenous rock-mass in finite element framework and to obtain bearing capacity of a strip footing. For this purpose, both displacement-based finite element (FE) analysis and finite element limit analysis (FELA) are carried out and results are compared. Finite element models of the flat rock-mass with supported foundations are developed in finite element package ABAQUS. The foundation is modeled using two-node cubic beam (B23) and rock-mass using plane-strain quadratic (CPE8R) element with reduced integration, having “Equivalent Mohr–Coulomb parameters.” Models with the same rock and foundation properties are modeled in OptumG2 based on FELA to obtain the upper-bound (UB) and lower-bound (LB) solutions with a constitutive model based on the Hoek–Brown failure criterion. The comparative study illustrates the critical issues that arise while implementing the failure criterion using the equivalent Mohr–Coulomb parameters, particularly in bearing capacity estimation, where the overburden pressure is low. © 2021, Springer Nature Singapore Pte Ltd.
Citation: Lecture Notes in Civil Engineering (2021), 133 LNCE: 213-224
URI: https://doi.org/10.1007/978-981-33-6346-5_19
http://repository.iitr.ac.in/handle/123456789/22067
Issue Date: 2021
Publisher: Springer Science and Business Media Deutschland GmbH
Keywords: Bearing capacity
Equivalent mohr–coulomb parameters
Finite element limit analysis
Finite element method
Foundation
Hoek–brown failure criterion
ISBN: 9.78981E+12
ISSN: 23662557
Author Scopus IDs: 57223816745
57190765838
36101951700
Author Affiliations: Prakash, S., Indian Institute of Technology, Roorkee, 247667, India
Raj, D., Indian Institute of Technology, Roorkee, 247667, India
Singh, Y., Indian Institute of Technology, Roorkee, 247667, India
Corresponding Author: Raj, D.; Indian Institute of TechnologyIndia; email: dhirajraj.iitr@gmail.com
Appears in Collections:Conference Publications [EQ]

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