DDA with shear strength reduction technique and its
application to stability analysis

LIU Jun; HUANG Sheng-quan; KONG Xian-jing

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DDA with shear strength reduction technique and its application to stability analysis

更新时间：2026-06-25

- DDA with shear strength reduction technique and its application to stability analysis
- Vol. 27, Issue S2, (2006)
- 作者机构：
  
  大连理工大学土木水利学院工程抗震研究所,大连,116024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV642.3
- Online First：16 December 2006，
  
  Published：2006
- 稿件说明：
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LIU Jun, HUANG Sheng-quan, KONG Xian-jing. DDA with shear strength reduction technique and its application to stability analysis[J]. 2006, 27(S2).
DOI：

LIU Jun, HUANG Sheng-quan, KONG Xian-jing. DDA with shear strength reduction technique and its application to stability analysis[J]. 2006, 27(S2). DOI：

摘要

在自行研制的非连续变形分析（discontinuous deformation analysis

DDA）程序中实现了自动强度折减法以模拟边坡的稳定性和安全系数。通过锦屏高边坡和某重力坝深层滑动的计算分析以及与刚体极限平衡法和有限元方法的比较研究可以看出，强度折减DDA法可以较高精度求出岩石高边坡的安全系数，但求得的重力坝深层抗滑稳定安全系数要低于刚体极限平衡法的结果。基于强度折减技术的DDA与FEM的耦合方法，可以较准确地求出重力坝深层抗滑稳定安全系数。

Abstract

An extension version of discontinuous deformation analysis (DDA) is presented. In order to calculate the safety factor of slope

the shear strength reduction technique is accomplished in the self-developed DDA program. Two examples

one is a high rock slope and the other one is a gravity dam

are simulated using this extended DDA program. From the results

we can find that the stability safety factor of rock slope can be calculated by DDA with shear strength reduction. But the safety factor of gravity dam from DDA is lower than that from limited equilibrium method and FEM. DDA coupled with FEM can give a reasonable factor of safety. The results show that DDA or DDA coupled FEM with shear strength reduction technique can be used to calculate the factor of safety and simulate the failure process of slopes.

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