Experimental Study on Structural Characteristics of Loess in Different Regions

GUO Jing; LUO Ya-sheng; GUO Hong; FU Zhong-yuan

您当前的位置：

首页 >

文章列表页 >

Experimental Study on Structural Characteristics of Loess in Different Regions

- Experimental Study on Structural Characteristics of Loess in Different Regions
- Bulletin of Soiland Water Conservation Vol. 29, Issue 1, Pages: 89-92(2010)
- 作者机构：
  
  西北农林科技大学水利与建筑工程学院, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
移动端阅览
GUO Jing, LUO Ya-sheng, GUO Hong, et al. Experimental Study on Structural Characteristics of Loess in Different Regions[J]. Bulletin of Soiland Water Conservation, 2010, 29(1): 89-92.
DOI：

GUO Jing, LUO Ya-sheng, GUO Hong, et al. Experimental Study on Structural Characteristics of Loess in Different Regions[J]. Bulletin of Soiland Water Conservation, 2010, 29(1): 89-92. DOI：

摘要

考虑不同地区黄土的结构性差异

选取洛川、兰州和杨凌3地的典型黄土

分别进行三轴剪切试验

测定了应力应变关系曲线。基于Duncan-chang双曲线模型

提出了一种简便求取结构性参数的方法

得出了这3个地区的黄土结构性参数的变化规律

较好地揭示了它们的结构性的变化规律和影响因素。结果表明

非饱和黄土的结构性参数随应变的增大先降低

而后保持在一个稳定的水平。含水率与围压对黄土的结构性影响显著。在相同的围压条件下

含水率越低

黄土的结构性参数越大;在相同的含水率条件下

围压越小

黄土的结构性参数越大。对不同地区而言

在相同条件下杨凌黄土的结构性最强

洛川黄土次之

兰州黄土结构性最弱。

Abstract

Triaxial shear tests were conducted to measure stress-strain curves under the consideration of loess structural differences in different regions.Three different typical loess areas of Luochuan

Lanzhou

and Yangling were selected.Based on Duncan2chang hyperbolic model

a simple way was adopted to determine structural parameters

which is better to reveal the changes and factors of structural parameters.The change in the structural parameters of the three regions was found.Results showed that unsaturated loess structural parameters firstly decreased with the increase in shear strain and then remained at a stable level.Water content and consolidation stress had significant influences on structural parameters.Under the same pressure condition

the lower the moisture content

the greater the structural parameters of loess and under the same moisture condition

the smaller the pressure

the greater the structural parameters of loess.As far as different regions are concerned

the strongest structural characteristic of loess under the same conditions was Yangling loess and it was followed by Luochuan loess.Lanzhou loess structure was the weakest.

关键词

Keywords

references

Views

1303

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Discussion on Soil Stabilizer for Seepage Control of Canal in Loess Area

Study on Micro-structures of Loess in the Xianyang Downtown Area

Study of the Relationships Between Apparent Resistivity of Unsaturated Loess and Its Engineering Properties

Research on Plant Protection for Loess Cutting Slope of Highway in Shaanxi Province

Loess Collapsibility and Structliral ClaaracteristiCS in Different Regions

Related Author

LI Ning

GUO Min-xia

HAN Su-jian

LIU Jun-feng

SU Ying

WU Yan-qing

JING Yan-lin

MENG Yong-hui

Related Institution

College of Water Resources and Architectural Engineering,Northwest University of Agriculture and Forestry,Yangling

Institute of Geotechnique Engineering,Xi’an University of Technology

Xianyang Institute of Architecture Design

Department of Resources Environment and Urban Science,Xianyang Normal College

Shanghai Jiaotong University

⁰