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Alternative TitleSearching Algorithm of Flexural Toppling Failure Surface of Countertendency Layered Slope Based on the Principle of Pan Jiazheng
屈新1,2,3; 苏立君1,2,3,4; 张崇磊1,2; 余方威1,2
Corresponding Author苏立君
Source Publication工程科学与技术
Other Abstract



It is necessary to assume the position and shape of the basal failure surface when analyzing the flexural toppling of countertendency layered slope.At present, the common assumed form of failure surface is a linear type failure plane, perpendicular to the discontinuities. However, the assumed failure surface is not consistent with the actual failure surface from actual field investigations.In order to solve the above problem, an algorithm to search the basal failure surface for improving the computational reliability of flexural toppling was proposed in this paper.Based on the principle of Pan Jiazheng, the basal failure surface was assumed to be a surface that required the minimum external force to trigger overall failure of a slope.In the searching process for the basal failure surface, the failure modes (shear failure and bending tensile failure) of the rock strata were determined by mechanical analyses.Then, the possible failure area of rock strata was determined based on the toppling failure conditions of the last piece of rock stratum, and the possible failure strata were divided into several groups.The minimum external force F satisfied for overall failure in each group was calculated through the limit equilibrium method and failure modes of rock strata.Eventually, by constantly changing the searching angle, a series of F were obtained.Among these forces, the minimum one was taken as the final external force satisfied for overall failure of the slope; the failure surface corresponding to final external force was regarded as the basal failure surface of the slope, and the corresponding strata group was considered as the most dangerous group.In this paper, taking a slate slope in South Anhui as an engineering example, the results showed that the obtained failure surface was consistent with the actual failure surface of the selected example.Therefore, the effectiveness of the new searching algorithm developed in this study was validated.


Keyword反倾向层状边坡 弯曲倾倒 破坏基准面 潘家铮原理 极限平衡方法
Subject AreaTu45
Indexed ByEI ; CSCD ; 北大中文核心
Funding Organization国家重点基础研究发展计划资助项目(2013CB733201) ; 中科院重点部署项目资助(KZZD-EW-05-01)
Accession numberAccession number: 20174704440896
Citation statistics
Document Type期刊论文
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
屈新,苏立君,张崇磊,等. 基于潘家铮原理的反倾向层状边坡弯曲倾倒破坏基准面搜索算法[J]. 工程科学与技术,2017,49(5):42-49.
APA 屈新,苏立君,张崇磊,&余方威.(2017).基于潘家铮原理的反倾向层状边坡弯曲倾倒破坏基准面搜索算法.工程科学与技术,49(5),42-49.
MLA 屈新,et al."基于潘家铮原理的反倾向层状边坡弯曲倾倒破坏基准面搜索算法".工程科学与技术 49.5(2017):42-49.
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