Calculation for volumetric strain of collapsible loess considering microstructure instability

LIU Xu; CHEN Long-zhu; WANG Lan-min; WANG Jun

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Calculation for volumetric strain of collapsible loess considering microstructure instability

更新时间：2026-06-25

- Calculation for volumetric strain of collapsible loess considering microstructure instability
- Vol. 26, Issue 7, (2005)
- 作者机构：
  
  1. 上海交通大学建工学院,上海,200030
  2. 中国地震局分析预报中心兰州基地兰州地震研究所,兰州,730000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU433
- Online First：17 December 2013，
  
  Published：2005
- 稿件说明：
移动端阅览
LIU Xu, CHEN Long-zhu, WANG Lan-min, et al. Calculation for volumetric strain of collapsible loess considering microstructure instability[J]. 2005, 26(7).
DOI：

LIU Xu, CHEN Long-zhu, WANG Lan-min, et al. Calculation for volumetric strain of collapsible loess considering microstructure instability[J]. 2005, 26(7). DOI：

摘要

针对黄土的湿陷变形问题，提出了一个微观结构模型，并由微观孔隙体积分布函数和黄土微结构的失稳判别条件，计算出土样中原状部分与扰动部分的体积比率；按复合体串联的力学模式推导出原状黄土的崩塌性体积-应变关系；计算实例与试验结果比较符合。尽管黄土的结构强度随含水量的不同而剧烈变化，但一些压缩试验表明：结构破坏阶段的压力范围在对数坐标中基本保持不变，且压缩曲线相互平行，这一现象用孔隙失稳的必要条件得到了证明。

Abstract

A new method to calculate the volumetric strain of collapsible loess considering microstructure instability is developed. In this method

loess is regarded as the compound of disturbed part and undisturbed part. The volumetric proportion of the both parts

which represents the state of micro-structural damage and varies with the increase of effective load

can be calculated by the combination of an idealized microstructure model

the pore size distribution curve and the equilibrium criterion for microstructure. The method is verified by comparing the calculated results with the data of triaxial compression tests. In addition

some experiments show that compression curves of loess with different water contents are parallel with each other in the sections that represented progressive damage to microstructure. This phenomenon is successfully explained by the equilibrium criterion for microstructure.

关键词

Keywords

references

Views

1556

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Quantitative assessment on change in microstructure of loess during collapsing using electrical resistivity measurement

A volumetric model of loess based on microstructure instability and generalized suction theories

Research on microstructural catastrophe model of deformation of collapsible loess

Response surface methodology to optimize the experimental study of target-activated microbial curing of loess

Key geomechanical issues and research recommendations for compressed CO2 energy storage in saline aquifers

Related Author

ZHA Fu-sheng

LIU Song-yu

DU Yan-jun

CUI Ke-rui

XU Long

LIU Xu

WANG Lan-min

CHEN Long-zhu

Related Institution

School of Resources and Environment Engineering, Hefei University of Techology

Institute of Geotechnical Engineering, Southeast University

中国地震局地震预测研究所兰州基地兰州地震研究所

Department of physics, The University of Adelaide, SA 5005 Australia 3. 上海交通大学建工学院

Institute of Geology and Geophysics, Chinese Academy of Sciences

AI问答

⁰