Discussion on strength reduction using FLAC

YANG You-cheng; LI Qun; CHEN Xin-ze; TANG Hui-ming

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Discussion on strength reduction using FLAC

更新时间：2026-06-25

- Discussion on strength reduction using FLAC
- Vol. 29, Issue 4, (2008)
- 作者机构：
  
  中国地质大学工程学院,武汉,430074
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU432
- Online First：10 July 2013，
  
  Published：2008
- 稿件说明：
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YANG You-cheng, LI Qun, CHEN Xin-ze, et al. Discussion on strength reduction using FLAC[J]. 2008, 29(4).
DOI：

YANG You-cheng, LI Qun, CHEN Xin-ze, et al. Discussion on strength reduction using FLAC[J]. 2008, 29(4). DOI：

摘要

强度折减法是数值模拟处理边坡稳定问题的常用方法，由于影响该方法计算精度的因素很多，所以该方法仍未在工程界得到确认和推广。本文采用FLAC（显式拉格朗日有限差分法）进行计算，通过对算例结果进行比较，阐明了在边坡稳定分析中边界范围和网格的疏密对强度折减法结果的影响，特别地，在边界范围上摆脱了数值模拟方法的建模原则的束缚，即边界范围取足够大的原则，并用计算结果极好地证明了结论的可靠性。

Abstract

When using numerical simulation methods to solve the stability of slope

the strength reduction method is in common use. But this method is not validated and generalized because there are many factors which affect the precision of results. Using the fast Lagrangian analysis of continua (FLAC) according to the comparison of results we can find out the influences of boundary range and density of the grid in the analysis of slope stability. Especially we get rid of the bondage that is the boundary range should be large enough which is the modeling principle. The results prove the reliability of the conclusions.

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