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Limit load and failure mechanisms of a vertical Hoek-Brown rock slope

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The problem considered in this short note is the limit load determination of a vertical rock slope.The classical limit theorem is employed with the use of adaptive finite elements and nonlinear programming to determine upper and lower bound limit loads of a Hoek-Brown vertical rock slope.The objective function of the mathematical programming problem is such as to optimize a boundary load,which is known as the limit load,resembling the ultimate bearing capacity of a strip footing.While focusing on the vertical slope,parametric studies are carried out for several dimensionless ratios such as the dimensionless footing distance ratio,the dimensionless height ratio,and the dimensionless rock strength ratio.A comprehensive set of design charts is presented,and failure envelopes shown with the results explained in terms of three identified failure mechanisms,i.e.the face,the toe,and the Prandtl-type failures.These novel results can be used with great confidence in design practice,in particularly noting that the current industry-based design procedures for the presented problem are rarely found.

Bearing capacityRock slopeVertical slopeFinite element limit analysisHoek-Brown yield criterion

Jim Shiau、Warayut Dokduea、Suraparb Keawsawasvong、Pitthaya Jamsawang

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School of Engineering,University of Southern Queensland,Toowoomba,4350,QLD,Australia

Department of Civil Engineering,Faculty of Engineering,King Mongkut's University of Technology Thonburi,Bangkok,Thailand

Research Unit in Sciences and Innovative Technologies for Civil Engineering Infrastructures,Department of Civil Engineering,Thammasat School of Engineering,Thammasat University,Pathumthani,12120,Thailand

Soil Engineering Research Center,Department of Civil Engineering,King Mongkut,s University of Technology North Bangkok,Bangkok,10800,Thailand

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National Science,Research and Innovation Fund(NSRF)King Mongkut's University of Technology North Bangkok

KMUTNB-FF-66-12

2024

10.1016/j.jrmge.2023.05.018

岩石力学与岩土工程学报(英文版)
中国科学院武汉岩土力学所中国岩石力学与工程学会武汉大学

岩石力学与岩土工程学报(英文版)

CSTPCD
影响因子：0.404
ISSN：1674-7755
年,卷(期)：2024.16(3)
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