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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

25卷

期数:

2008年02期

页码:

36-40

栏目:

出版日期:

2008-06-20

文章信息/Info

Title:

Application of Local Factor of Safety Method in Slope Stability Analysis

作者:

李亮¹,王玉杰¹,郑榕明²

1.中国水利水电科学研究院岩土工程研究所,北京100044;2.香港理工大学土木及结构工程学系,香港

Author(s):

LI Liang¹, WANG Yu-jie¹, ZHENG Rong-ming²

1. Institute of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research, Beijing 100044, China; 2. Department of Civil and Structural Engineering,The Hong Kong Polytechnic University, Hong Kong, China

关键词:

土坡稳定分析;  极限平衡法;  潘家铮极大值原理;  局部安全系数

Keywords:

slope stability analysis;  limit equilibrium method;  Pan Jia-zheng maximum principle;  local factor of safety

分类号:

TU441

DOI:

-

文献标志码:

A

摘要:

假定各条块的局部安全系数与滑动面的整体安全系数不相等,联合潘家铮极大值原理与优化算法构建了一种求解整体安全系数的新方法。对于给定滑动面,该方法将推力线与条块间力的倾角视为优化变量,利用优化算法寻找一组优化变量使此滑动面的整体安全系数达到极大值,同时可得到各条块的局部安全系数。在众多可行的滑动面中,选择整体安全系数最小的滑动面作为临界滑动面。利用该法对澳大利亚计算机应用协会(ACADS)的考题以及已有文献中的典型例题进行了计算,通过比较分析了该法的合理性。

Abstract:

It was assumed that the values of local factors of safety for each slice were different to those of total factor of safety of slip surface. A new method for determining the total factor of safety for given slip surface was presented by using Pan Jia-zheng maximum principle and optimization algorithm. The thrusting force line and inclination angles of slice forces were taken as optimization variables for given slip surface. The acceptable force vectors which gave the maximum value of factors of safety were determined and the corresponding factors of safety for given slip surface were also determined. In most feasible slip surfaces, the minimum slip surfaces of total factor of safety were taken as critical slip surface. Finally, the new method was adopted to study the examples used by Australia Computer Aided Design Society(ACADS)and in the existing literatures, the comparative studies have shown that the new method is rational and feasible and can be used in stability analysis.

参考文献/References:

[1] 陈祖煜,汪小刚,杨 健.岩质边坡稳定分析原理方法程序[M].北京:中国水利水电出版社,2005:394-395.CHEN Zu-yu,WANG Xiao-gang,YANG Jian.Stability Analysis of Rock Slopes:Theories Methods and Programs[M].Beijing:China Water Power Press,2005:394-395.
[2]YAMAGAMI T,TAKIMAZAKA Z,JIANG J.Progressive Failure Analysis of Slopes Based on LEM[C]//LUAN M T,KEIZO U.Performance and Evaluation of Soil Slopes Under Earthquake and Rainstorm.Dalian:Dalian University of Technology Press,1998:35-48.
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[5]李 亮,迟世春,林 皋,等.利用潘家铮极值原理与和声搜索算法进行土坡稳定分析[J].岩土力学,2007,28(1):157-162.LI Liang,CHI Shi-chun,LIN Gao,et al.Slope Stability Analysis Using Extremum Principle by Pan Jia-zheng and Harmony Search Method[J].Rock and Soil Mechanics,2007,28(1):157-162.
[6]潘家铮.建筑物的抗滑稳定和滑坡分析[M].北京:水利出版社,1980:25-28.PAN Jia-zheng.Analysis of Landslide and Anti-skid Stability of Structures[M].Beijing:Hydraulic Press,1980:25-28.
[7]李 亮,迟世春,郑榕明,等.混合粒子群算法搜索土坡危险滑动面[J].工业建筑,2007,37(2):52-59.LI Liang,CHI Shi-chun,ZHENG Rong-ming.Search for the Critical Slip Surface Using Mixed Version of Particle Swarm Optimization Algorithms[J].Industrial Construction,2007,37(2):52-59.
[8]ZOLFAGHARI A R,HEATH A C,MCCOMBIE P F.Simple Genetic Algorithm Search for Critical Non-circular Failure Surface in Slope Stability Analysis[J].Computers and Geotechnics,2005,32(3):139-152.

相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2008-03-18
作者简介:李 亮(1977-),男,山东济南人,工学博士,博士后,E-mail:liangli14@yahoo.com.cn。

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更新日期/Last Update: 2008-06-20