A True Triaxial Test of Saturated Coarse Sand Under Different Loading Directions

Zhou Ruo-yang; Yang Xue-qiang; Liu Pan; Zheng Li-ting; Chen Tao

doi:10.12052/gdutxb.190062

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A True Triaxial Test of Saturated Coarse Sand Under Different Loading Directions

更新时间：2026-05-27

- A True Triaxial Test of Saturated Coarse Sand Under Different Loading Directions
- Vol. 37, Issue 1, Pages: 58-64(2020)
- 作者机构：
  
  广东工业大学土木与交通工程学院,广东,广州,510006
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.190062
  CLC： P642
- Online First：25 January 2020，
  
  Published：2020
- 稿件说明：
移动端阅览
周若洋, 杨雪强, 刘攀, 郑丽婷, 陈涛. 不同加荷方向下横观各向同性饱和粗砂的真三轴试验研究[J]. 广东工业大学学报, 2020, 37(1): 58-64.

Zhou Ruo-yang, Yang Xue-qiang, Liu Pan, et al. A True Triaxial Test of Saturated Coarse Sand Under Different Loading Directions[J]. 2020, 37(1): 58-64.
周若洋, 杨雪强, 刘攀, 郑丽婷, 陈涛. 不同加荷方向下横观各向同性饱和粗砂的真三轴试验研究[J]. 广东工业大学学报, 2020, 37(1): 58-64. DOI： 10.12052/gdutxb.190062.

Zhou Ruo-yang, Yang Xue-qiang, Liu Pan, et al. A True Triaxial Test of Saturated Coarse Sand Under Different Loading Directions[J]. 2020, 37(1): 58-64. DOI： 10.12052/gdutxb.190062.

摘要

各向异性是岩土材料普遍具有的性质

而横观各向同性是岩土各向异性最通常的表现形式

因此在真三轴试验中

不同加荷方向下的大主应力方向与颗粒沉积方向之间形成的不同夹角(

角)对其本构特性影响的研究是具有意义的。在有效围压为200 kPa

中主应力系数为0，0.5，1的条件下

采用不同的制样方法

分别进行

角为0°，60°，90°的饱和粗砂进行排水剪切试验

并结合试验数据探究其应力应变及剪胀特性。最后

通过分析似临界状态下有效球应力

p′

–偏应力

曲线和ln

p′

–孔隙比

曲线

得出不论

角取何值

其临界状态都是存在的。

Abstract

Anisotropy is a general property of geomaterials

and transverse isotropy is the most common form of geotechnical anisotropy. Therefore

in the true triaxial test

the direction of the principal stress is different under different loading directions. The study of the constitutive properties of the different angles formed between the particle deposition directions is significant. Under the conditions of effective confining pressure of 200 kPa and medium principal stress coefficient of 0

0.5 and 1

different sampling methods were used to conduct the drainage shear test of saturated coarse sand with α angles of 0°

60° and 90° respectively

combined with experimental data to explore its stress strain and dilatancy characteristics. Finally

the criticality states under different alpha angles are analyzed.

关键词

Keywords

references

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张沛. 饱和砂土不同应力路径剪胀与强度特性的真三轴试验研究[D]. 广州: 广东工业大学, 2015.

徐斌. 细粒含量对饱和粗砂力学特性影响的真三轴试验研究[D]. 广州: 广东工业大学, 2017.

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LENG Y, LUAN M T, XU C S, et al . Comparative study on drainage and undrained shear behavior of saturated sand [J ] . Journal of Disaster Prevention and Mitigation Engineering, 2008, 28(2): 144-151.

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LIU Y J , FU N, CHEN C X, et al . Study on microstructure changes of soft clay before and after triaxial impact load [J ] . Journal of Guangdong University of Technology, 2015, 32(2): 23-27.

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