基于结构性黄土联合强度的邓肯-张非线性本构模型

刘军定; 李荣建; 孙萍; 王治军; 骆建文; 李振菲

doi:10.11779/CJGE2018S1020

基于结构性黄土联合强度的邓肯-张非线性本构模型 English Version

1. 西安理工大学岩土工程研究所,陕西西安 710048;
2. 中国地质科学院地质力学研究所,北京 100081;
3. 西安长庆科技工程有限责任公司,陕西西安 710021

基金项目: 国家自然科学基金项目（41472296,11072193）; 西安长庆科技工程有限责任公司项目（CTEC(2014)Z-KY-013）; 中国地质调查项目（DD20160271）; 陕西省黄土力学与工程重点实验室项目（14JS064）

详细信息

作者简介:
刘军定(1989- ),男,博士研究生,主要从事黄土力学、边坡工程与岩土工程数值仿真等方面的科研。E-mail：308973077@qq.com。

通讯作者:
李荣建，E-mail：lirongjian@xaut.edu.cn

中图分类号: TU432
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- 文章访问数: 220
- HTML全文浏览量: 8
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出版历程
- 收稿日期: 2018-02-23
- 发布日期: 2018-08-24

Duncan-Chang nonlinear constitutive model based on joint strength theory of structural loess

1. Institute of Geotechnical Engineering, Xi'an University of Technology, Xi'an 710048, China;
2. Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;
3. Xi'an Changqing Technology ＆ Engineering Co., Ltd., Xi'an 710021, China

摘要

摘要:
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- 联合强度 /
- 抗拉强度 /
- 邓肯-张非线性本构模型 /
- 破坏应力比
Abstract: The Duncan-Chang nonlinear model based on the Mohr-Coulomb strength criterion can better reflect the shear strength characteristics of the soil, but it is not suitable to reflect the tensile strength characteristics of the soil. In order to reflect the tensile strength of the structural loess reasonably, firstly, the strength of soil is re-determined by introducing the joint strength criterion into the Duncan-Chang nonlinear constitutive model, and the failure stress ratio based on the joint strength theory of structural loess is corrected. Then, the tangent deformational modulus is re-determined by the modified failure stress ratio. Finally, the tangent Poisson's ratio is modified by the modified tangent deformational modulus, and the Duncan-Chang nonlinear constitutive model based on the joint strength theory is established, which provides a new method for reasonable consideration of the tensile strength characteristics of structural loess in the study on the stability of structural loess slopes.
- joint strength /
- tensile strength /
- Duncan-Chang nonlinear constitutive model /
- failure stress ratio

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参考文献(14)

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