Comparative experimental study on static shear strength and postcyclic
strength of saturated silty clay

LIU Jian-min; QIU Yue; GUO Ting-ting; SONG Wen-zhi; GU Chuan

doi:10.16285/j.rsm.2019.0430

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Comparative experimental study on static shear strength and postcyclic strength of saturated silty clay

更新时间：2026-06-25

- Comparative experimental study on static shear strength and postcyclic strength of saturated silty clay
- Vol. 41, Issue 3, Pages: 773-780(2020)
- 作者机构：
  
  1. 山东省地震局,山东,济南,250014
  2. 山东省地震工程研究院,山东,济南,250021
  3. 山东科技大学矿山灾害预防控制?省部共建国家重点实验室培育基地,山东,青岛,266590
  4. 上海二十冶建设有限公司,上海,201999
  5. 温州大学建筑与土木工程学院,浙江,温州,325035
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2019.0430
  CLC： TU442
- Online First：25 May 2020，
  
  Published：2020
- 稿件说明：
移动端阅览
LIU Jian-min, QIU Yue, GUO Ting-ting, et al. Comparative experimental study on static shear strength and postcyclic strength of saturated silty clay[J]. 2020, 41(3): 773-780.
DOI：

LIU Jian-min, QIU Yue, GUO Ting-ting, et al. Comparative experimental study on static shear strength and postcyclic strength of saturated silty clay[J]. 2020, 41(3): 773-780. DOI： 10.16285/j.rsm.2019.0430.

摘要

针对黄河下游冲积流域分布的大量粉质黏土，利用动、静三轴仪，研究了试样在振动荷载作用、不同围压、超固结比下的静抗剪强度变化。研究表明：振动荷载作用后，试样呈现出类似超固结土的现象，对比振动前的静抗剪强度发现，当似超固结比小于1.25时，振动对试样的抗剪强度影响较小；当似超固结比大于1.25时，抗剪强度迅速衰化，而破坏孔压比呈现出先减小而后增大的特征。在不同超固结比作用下，对比卸载后相同围压的静抗剪强度可得，超固结比与抗剪强度呈指数增长关系，而似超固结比对抗剪强度的提高要强于超固结比；随着似超固结比、超固结比的增大，试样的抗剪强度比均有所增加，当工程中缺乏动力试验条件时，采用超固结比评价经过动荷载作用的地基强度变化是偏安全的。

Abstract

Based on the large-distributed silty clay in the impact basin of the lower Yellow River

the dynamic triaxial apparatus and the strain controlled triaxial apparatus were conducted to investigate the undrained shear strength of the silty clay after vibration under different confining pressures and over-consolidated ratios. It is shown that the shear behavior of the sample after vibration is similar to that under over-consolidated state. Compared with the shear behavior before vibration

it can be found that the vibration has little influence on the shear strength when the similar over-consolidated ratio (SOCR) is less than 1.25; while SOCR is larger than 1.25

the shear strength of the sample decreases rapidly and the failure pore pressure ratio decreases firstly and then increases. By comparing the shear strength after unloading under the different SOCR and the same confining pressures

it can be concluded that the shear strength increases with the over-consolidated ratio (OCR) by exponential relation. And the increase of the shear strength caused by SOCR is more obvious than OCR. In addition

the shear strength ratio also increases with the increase of the SOCR and the OCR. Therefore

the OCR can be adopted to evaluate the foundation strength after dynamic load if it is difficult to carry out dynamic test in practice.

关键词

Keywords

references

Views

187

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Shear strength and volume change behavior of clay-rich soil at high suctions

Direct shear tests and PFC2D numerical simulation of colluvial mixture

Centrifuge model tests on vertical bearing capacity of single pile in silty clay

Experimental study of shear failure characteristics of spread foundations

Study of test methods of saturated soil shear strength considering effects of stress history

Related Author

XU Xiao

ZHAO Cheng-gang

XUE Ya-dong

LIU Zhong-qiang

WU Jian

LI Yang

ZHANG Ga

LI Rong-nian

Related Institution

Key Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University

College of Civil Engineering and Architecture, Guilin University of Technology

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

Department of Geotechnical Engineering, Tongii University

Norwegian Geotechnical Institute

AI问答

⁰