The extended Monte Carlo techniques by rotating slip segments for searching general critical slip surface（Ⅱ）：Constant angle of rotation

ZHANG Lu-yu; ZHANG Jian-min

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The extended Monte Carlo techniques by rotating slip segments for searching general critical slip surface（Ⅱ）：Constant angle of rotation

更新时间：2026-06-25

- The extended Monte Carlo techniques by rotating slip segments for searching general critical slip surface（Ⅱ）：Constant angle of rotation
- Vol. 27, Issue 12, (2006)
- 作者机构：
  
  清华大学水电系岩土工程研究所,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU413.6+2
- Online First：09 December 2013，
  
  Published：2006
- 稿件说明：
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ZHANG Lu-yu, ZHANG Jian-min. The extended Monte Carlo techniques by rotating slip segments for searching general critical slip surface（Ⅱ）：Constant angle of rotation[J]. 2006, 27(12).
DOI：

ZHANG Lu-yu, ZHANG Jian-min. The extended Monte Carlo techniques by rotating slip segments for searching general critical slip surface（Ⅱ）：Constant angle of rotation[J]. 2006, 27(12). DOI：

摘要

基于转角随机的Monte Carlo搜索技术（Abdallah I. Husein

2001）有两点不足：（1）计算结果随机，（2）当坡体介质较为复杂时，容易陷入局部极值。因此对该法进行了改进，将随机转角变为常值转角，使之成为确定性方法。算例分析表明：改进后的Monte Carlo搜索技术兼具Random Walking（逐渐逼进）与Random Jumping（均匀扫描）双重特性，这种特性使得改进MC能兼顾计算精度与效率，且更不易受初始滑面的影响，具有更强的适应性。尽管旋转角的大小对改进MC的计算结果有一定的影响，但并不敏感，实际边坡工程只需选择若干个试算角度便能得到较为满意的结果，除非坡体介质有狭长软弱层，此时要适当增加试算角度或改变初始滑面的位置。

Abstract

The Monte Carlo searching method (Abdallah I. Husein

2001) has two shortcomings

one is that its result has random characteristic

the other is that it is inclined to fall into the local extremum in complex condition. This paper extends the method by transferring random angle of rotation to constant angle of rotation

which makes it determinate method. Several examples show that extended method (EMC) has both the characteristics of random walking and random jumping

so that it is higher precious and more effective; and moreover EMC can work properly whether or not the initial slip surface is convergence solving safety factor. Although the rotation angle has a little influence on results by EMC

in practical engineering only several angles need to be tried to obtain reasonable results; unless slope mass has slightness weak layers

when more tries of different angles or several various initial slip surfaces are needed.

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