Influence of principal stress direction and intermediate principal stress parameter on the small strain stiffness of reconstituted loess

LIN Qing-hui; YAN Jia-jia; DONG Mei; ZHU Jian-feng

doi:10.16285/j.rsm.2016.1091

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Influence of principal stress direction and intermediate principal stress parameter on the small strain stiffness of reconstituted loess

更新时间：2026-06-25

- Influence of principal stress direction and intermediate principal stress parameter on the small strain stiffness of reconstituted loess
- Vol. 39, Issue 4, Pages: 1369-1376(2018)
- 作者机构：
  
  1. 台州职业技术学院建筑工程学院,浙江,台州,318000
  2. 浙江大学建筑工程学院,浙江,杭州,310058
  3. 宁波大学建筑工程和环境学院,浙江,宁波,315211
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2016.1091
  CLC： TU433
- Online First：06 June 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
LIN Qing-hui, YAN Jia-jia, DONG Mei, et al. Influence of principal stress direction and intermediate principal stress parameter on the small strain stiffness of reconstituted loess[J]. 2018, 39(4): 1369-1376.
DOI：

LIN Qing-hui, YAN Jia-jia, DONG Mei, et al. Influence of principal stress direction and intermediate principal stress parameter on the small strain stiffness of reconstituted loess[J]. 2018, 39(4): 1369-1376. DOI： 10.16285/j.rsm.2016.1091.

摘要

利用配备高精度应变传感器的空心圆柱扭剪仪对重塑黄土开展了一系列定向剪切试验，剪切过程中保持平均主应力p、大主应力方向角? 以及中主应力系数b不变。共完成了包括3组不同大主应力方向角和1组不同中主应力系数的4组试验，共21个试样。对定向剪切条件下重塑粉土的应力-应变-强度以及小应变（<0.1%）刚度特性进行了研究，分析了不同大主应力方向角及中主应力系数的影响。试验研究结果表明，重塑黄土存在显著的强度各向异性特性，沿? =0°方向的强度最大，而最小强度方向因中主应力系数的不同而不同。? =0°时，b=0.25的强度最大，此时试样接近平面应变条件。小应变条件下重塑黄土的剪切刚度也因剪切时?和b的不同而不同，剪应变小于0.02%和大于2%时，刚度基本保持不变，初始剪切刚度很大，当剪应变大于0.02%后，随着剪应变的增加而迅速衰减，衰减曲线可以采用指数函数进行较好的拟合。

Abstract

A series of tests was carried out on reconstituted loess with a hollow cylinder apparatus equipped with high precision strain sensors with fixed principal stress direction. The mean principal stress p

principal stress direction ? and intermediate principal stress coefficient b were constant during shearing. A total of 21 specimens in 4 groups of experiments

including 3 groups with different main stress direction angles and 1 group with main stress coefficients

were completed. The stress

strain

strength

and small strain (2%. The initial stiffness was higher at the beginning of shearing and decreased quickly with the increasing of shear strain when shear strain >0.02%. Stiffness varying with shear strain could be simulated accurately with the exponential function.

关键词

Keywords

references

Views

147

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Intergranular-strain elastoplastic modeling of small-strain clay stiffness and deep excavation response

Influence of full-strain-range non-linearity of sand on cone penetration response

Anti-erosion mechanisms of microbially induced calcium carbonate precipitation-vegetation synergistic slope protection

Evaluation of liquefaction flow characteristics and soil state of saturated sand based on tension and compression apparent viscosity

Strength development model for slurry-like mud treated by physicochemical combined method considering preloading stress

Related Author

QIAO Ya-qing

SHI Zhen-hao

HUANG Mao-song

ZHANG Zhong-jie

WANG Hao-ran

TONG Sen-jie

HUANG Mao-song

SHI Zhen-hao

Related Institution

Department of Geotechnical Engineering, Tongji University

Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University

Shanghai Urban Construction Design & Research Institute (Group) Co., Ltd.

PowerChina Huadong Engineering Corporation Limited

Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University

AI问答

⁰