A unified hardening model considering bonding in structured soils

ZHU En-yang; LI Xiao-qiang

doi:10.16285/j.rsm.2017.0482

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

A unified hardening model considering bonding in structured soils

更新时间：2026-06-25

- A unified hardening model considering bonding in structured soils
- Vol. 39, Issue 1, Pages: 112-122(2018)
- 作者机构：
  
  1. 北京航空航天大学航空科学与工程学院,北京,100191
  2. 北方工业大学土木工程学院,北京,100144
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.0482
  CLC： TU411
- Online First：06 June 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
ZHU En-yang, LI Xiao-qiang. A unified hardening model considering bonding in structured soils[J]. 2018, 39(1): 112-122.
DOI：

ZHU En-yang, LI Xiao-qiang. A unified hardening model considering bonding in structured soils[J]. 2018, 39(1): 112-122. DOI： 10.16285/j.rsm.2017.0482.

摘要

结构性土颗粒间的胶结使试样剪切破坏最终应力比高于相应重塑土，也限制了试样剪切时体积应变的自由发挥。在考虑结构垮塌为主的结构性土统一硬化(UH)模型基础上，将应力空间中静止的临界状态线扩展为动态的移动临界状态线。据此，通过建立新的屈服面方程并修正剪胀方程，将结构性土统一硬化(UH)模型扩展为胶结结构性土统一硬化(UH)模型。相对于原模型，新模型增加了1个模型参数，即初始胶结应力，反映土颗粒之间的初始胶结作用。通过4种结构性土试验数据与模型预测对照表明：所提模型能够较合理地描述结构性土等向压缩、常规三轴排水与不排水剪切等特性。

Abstract

Structured soils with interparticle bonding have higher shearing ultimate stress ratio and less free dilatancy than the corresponding reconstituted soils. To overcome this defect

a moving critical state line (MCSL) in stress space is presented based on the structured unified hardening (UH) model mainly considering soil structure collapse. By developing new yield functions and modifying dilatancy equation

the structured UH model is extended to be applicable for bonding structured soil. In stress space

MCSL parallels to the traditional static critical state line (CSL) and moves toward the CSL as structure decays. The extended model adds 1 new parameter

namely the initial bonding stress

to describe initial bond between particles. Comparisons between test data and predictions of 4 structured soils indicate that the extended model is qualified in describing the behaviors of the bonding structured soils in isotropic compression

drained and undrained triaxial compression.

关键词

Keywords

references

Views

230

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

A method for describing consolidated-undrained shear behavior of structured soil

A UH constitutive model for structured soils

Analysis of effect of anchor on deformation and force of double-row piles

Study of constitutive model of sand-geogrid interface behavior in geogrid/geotextile reinforced soil

Research status and prospects of constitutive models for municipal solid waste

Related Author

WANG Chang-ming

KUANG Shao-hua

WANG Gang-cheng

XING Yu-dong

ZHU En-yang

YAO Yang-ping

HU He-xiang

SONG Fu-yuan

Related Institution

College of Construction Engineering, Jilin University

Liaoning Jiaotong Investigation and Design Institute

School of Transportation Science and Engineering, Beihang University

Technical Center, China State Construction Engineering Corporation Limited

College of Architecture and Civil Engineering, Wenzhou University

AI问答

⁰