Evaluation of stability of structural loess slope considering initial structural parameters

LI Rong-jian; ZHENG Wen; LIU Jun-ding; YAN Rui; SHAO Sheng-jun

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Evaluation of stability of structural loess slope considering initial structural parameters

更新时间：2026-06-25

- Evaluation of stability of structural loess slope considering initial structural parameters
- Vol. 35, Issue 1, (2014)
- 作者机构：
  
  1. 西安理工大学岩土工程研究所,西安,710048
  2. 西安理工大学陕西省黄土力学与工程重点实验室,西安,710048
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU432
- Online First：14 January 2014，
  
  Published：2014
- 稿件说明：
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LI Rong-jian, ZHENG Wen, LIU Jun-ding, et al. Evaluation of stability of structural loess slope considering initial structural parameters[J]. 2014, 35(1).
DOI：

LI Rong-jian, ZHENG Wen, LIU Jun-ding, et al. Evaluation of stability of structural loess slope considering initial structural parameters[J]. 2014, 35(1). DOI：

摘要

针对应力比结构性参数存在的问题，建立了结构性黄土初始结构性参数与含水率、围压之间的关系，在变形过程中建立了更为合理的结构性参数与广义剪应变的关系，并将其引入结构性黄土的强度理论中。在此基础上，通过数值计算对边坡结构性参数分布的变化规律及潜在滑动面的确定进行了评价。研究结果表明：建立的初始结构性参数可以反映黄土边坡的结构性参数初始分布场；结构性参数变化的上限是初始结构性参数，下限为结构性完全丧失后的结构性参数，且其值等于1.0；在结构性黄土边坡稳定性分析中，通过结构性参数的分布规律可在一定程度上确定边坡的潜在滑动面，但仅适用于塑性区域呈明显的带状集中分布的情况。

Abstract

In order to improve the description method of variation of structural parameters

according to the existed problems of the stress ratio structural parameters

this article proposed the equation description of initial structural parameters that may take the initial water content and the confining pressure of structural loess into account

and also established a more reasonable description of equation between the structural parameters and the generalized shear strain

which is introduced into the strength theory of structural loess. Then the distribution of structural parameter and the potential sliding surface of structural loess slope are evaluated through the numerical computation. The results show that: the newly established initial structural parameters can reflect the distribution of initial structural parameters in structural loess slope; the upper limit of structural parameters is the initial structural parameters

while the lower limit of structural parameters is the structural parameters that the structural strength is completely lost; and its value is equal to 1.0. In the stability analysis

the potential sliding surface can be determined through the distribution of structural parameters to some extent; but it just can be effective under the circumstance that the plastic zone in slope shows the obvious banded concentration distribution.

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