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

作　　者：Jim Shiau Warayut Dokduea Suraparb Keawsawasvong Pitthaya Jamsawang 

机构地区：[1]School of Engineering,University of Southern Queensland,Toowoomba,4350,QLD,Australia [2]Department of Civil Engineering,Faculty of Engineering,King Mongkut’s University of Technology Thonburi,Bangkok,Thailand [3]Research Unit in Sciences and Innovative Technologies for Civil Engineering Infrastructures,Department of Civil Engineering,Thammasat School of Engineering,Thammasat University,Pathumthani,12120,Thailand [4]Soil Engineering Research Center,Department of Civil Engineering,King Mongkut’s University of Technology North Bangkok,Bangkok,10800,Thailand

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2024年第3期1106-1111,共6页岩石力学与岩土工程学报（英文版）

基　　金：This research was funded by National Science,Research and Innovation Fund(NSRF),and King Mongkut’s University of Technology North Bangkok with Contract No.KMUTNBeFFe66e12.

摘　　要：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.

关 键 词：Bearing capacity Rock slope Vertical slope Finite element limit analysis Hoek-Brown yield criterion 

分 类 号：TU457[建筑科学—岩土工程]