Critical state characteristics of saline loess under true triaxial conditions

ZHANG Shao-ying; SHAO Shuai; SHAO Sheng-jun; WANG Ze-chi; WU Hao; ZHU Xue-liang

doi:10.16285/j.rsm.2025.0633

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Critical state characteristics of saline loess under true triaxial conditions

更新时间：2026-08-04

- Critical state characteristics of saline loess under true triaxial conditions
- Vol. 47, Issue 7, (2026)
- 作者机构：
  
  1. ．西安理工大学土木建筑工程学院,陕西,西安,710048
  2. ．西安理工大学岩土工程研究所,陕西,西安,710048
  3. ．西安理工大学陕西省黄土力学与工程重点实验室,陕西,西安,710048
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2025.0633
  CLC：
- Online First：09 July 2026，
  
  Published：2026
- 稿件说明：
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ZHANG Shao-ying, SHAO Shuai, SHAO Sheng-jun, et al. Critical state characteristics of saline loess under true triaxial conditions[J]. 2026, 47(7).
DOI：

ZHANG Shao-ying, SHAO Shuai, SHAO Sheng-jun, et al. Critical state characteristics of saline loess under true triaxial conditions[J]. 2026, 47(7). DOI： 10.16285/j.rsm.2025.0633.

摘要

为探究渗透吸力对非饱和黄土在三维应力条件下的压缩、屈服、临界状态特性的影响，针对不同孔隙水盐浓度黄土，利用非饱和真三轴仪在控制基质吸力条件下进行了等向压缩试验和等

等

剪切试验（

为净平均应力，

为中主应力参数）。研究结果表明：等向压缩曲线随渗透吸力增大而逐渐下移，屈服应力呈减小趋势。剪切破坏强度随着

值增大而减小，随着渗透吸力增大而增大。不同

值条件下，

p-q

（

为广义剪应力）平面内临界状态线可使用有效净平均应力归一为饱和土临界状态线，其斜率

随渗透吸力增大而增大。子午平面内的塑性势面呈椭圆形，随着渗透吸力增大逐渐长轴变短，短轴变长。e-lgp（

为非饱和土孔隙比）平面内临界状态线均随着渗透吸力增大而上移，斜率

和

逐渐减小。非饱和土和饱和土临界状态孔隙比（

）之比

与气相饱和度(1−

)（

为临界状态时土的饱和度）可实现归一化描述，并进一步考虑渗透吸力

建立了三维非饱和盐渍黄土临界状态孔隙比预测模型。

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Related Author

ZHANG Shao-ying

SHAO Shuai

SHAO Sheng-jun

ZHU Xue-liang

WU Hao

WANG Ze-chi

WANG Li-ye

ZHOU Feng-xi

Related Institution

School of Civil Engineering and Architecture, Xi’an University of Technology

Institute of Geotechnical Engineering, Xi’an University of Technology

Shaanxi Key Laboratory of Loess Mechanics and Engineering, Xi’an University of Technology

School of Civil Engineering, Hexi University

School of Civil Engineering, Lanzhou University of Technology

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