Two and Three-dimensional Stability Analyses of Slopes with Local Load on Top Surface(Ⅱ)——Using Upper-bound Method of Limit Analysis

Yang Xue-qiang; Au S K; Cheng Y M; Fung W H; LI Zhang-ming

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Two and Three-dimensional Stability Analyses of Slopes with Local Load on Top Surface(Ⅱ)——Using Upper-bound Method of Limit Analysis

更新时间：2026-05-27

- Two and Three-dimensional Stability Analyses of Slopes with Local Load on Top Surface(Ⅱ)——Using Upper-bound Method of Limit Analysis
- Vol. 26, Issue 1, Pages: 8(2009)
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- Published：2009
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杨雪强, 区兆光, 郑榕明, 冯颖匡, 李彰明. 坡顶局部荷载下边坡的二维和三维稳定分析(Ⅱ)——极限分析的上限法[J]. 广东工业大学学报, 2009, 26(1): 8.

Yang Xue-qiang, Au S K, Cheng Y M, et al. Two and Three-dimensional Stability Analyses of Slopes with Local Load on Top Surface(Ⅱ)——Using Upper-bound Method of Limit Analysis[J]. 2009, 26(1): 8.
杨雪强, 区兆光, 郑榕明, 冯颖匡, 李彰明. 坡顶局部荷载下边坡的二维和三维稳定分析(Ⅱ)——极限分析的上限法[J]. 广东工业大学学报, 2009, 26(1): 8. DOI：

Yang Xue-qiang, Au S K, Cheng Y M, et al. Two and Three-dimensional Stability Analyses of Slopes with Local Load on Top Surface(Ⅱ)——Using Upper-bound Method of Limit Analysis[J]. 2009, 26(1): 8. DOI：

摘要

在上限理论的框架内

借助提出的三维破坏模式

探讨了坡顶均布矩形超载下边坡的安全系数随荷载长宽比的变化规律

相应的安全系数计算结果与FLAC有限元的计算结果进行了有益的对比

也与室内模型实验结果进行了对比

从而对上限解法求解三维边值问题的可靠性进行了较深入的论证.对同一边坡的二维和三维稳定问题

上限法和FLAC有限元法尽管破坏机制和数值处理过程不同

但均可得出大致相同的安全系数

基本实现了殊途同归.上限法和有限元法都是有效的土坡稳定分析方法

两者相辅相成

互为验证.

Abstract

Combining kinematically admissible three-dimensional slope failure mechanism based on the upper-bound theory of limit analysis

slope safety factor with different ratio of length to width of uniform rectangle pressure acted on slope top surface is studied systematically

and is compared thoroughly with the safety factors calculated by using FLAC software

and further with model test results

corresponding reliability of the upper-bound solutions to the three-dimensional slope stability is further di...

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references

杨雪强,凌平平,杨锐,陈桂林. 坡顶局部荷载下边坡的二维和三维稳定分析(Ⅰ)——强度折减的有限元法[J]. 广东工业大学学报. 2008(04)

杨雪强,SFOLLED.E.F,郭培军,刘祖德. 坡顶压力下边坡的二维与三维稳定分析(英文)[J]. 岩土工程学报. 2006(05)

王红雨,杨敏. 临近基坑矩形浅基础地基承载力上限估算[J]. 岩土工程学报. 2005(10)

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