[1]聂去尘,庄心善,周 荣,等. 膨胀土变形特性和基于Mohr-coulomb准则本构关系[J].湖北工业大学学报,2023,(4):88-91+116.
　NIE Quchen,ZHUANG Xinshan,ZHOU Rong,et al. Research on Deformation Characteristics of Expansive Soil and Constitutive Relationship based on Mohr-Coulomb Criterion[J].,2023,(4):88-91+116.
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 膨胀土变形特性和基于Mohr-coulomb准则本构关系()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2023年第4期
页码:
88-91+116
栏目:
湖北工业大学学报
出版日期:
2023-08-30

文章信息/Info

Title:
 Research on Deformation Characteristics of Expansive Soil and Constitutive Relationship based on Mohr-Coulomb Criterion
文章编号:
1003-4684(2023)04-0088-04
作者:
 聂去尘;  庄心善;  周 荣;  文 武
 湖北工业大学土木建筑与环境学院， 湖北 武汉430068
Author(s):
 NIE Quchen; ZHUANG Xinshan; ZHOU Rong; WEN Wu
 School of Civil Engin., Architecture and Environment, Hubei Univ. of Tech.，Wuhan 430068,China
关键词:
 ; 膨胀土;  变形特性;  耦合;  剪胀角;  本构关系
Keywords:
 ; expansive soil;  deformation characteristics;  coupling;  dilatancy angle;  constitutive relationship
分类号:
TU 411
文献标志码:
A
摘要:
 膨胀土是一种强度较高的可塑性特殊黏土，其变形特性在力学上表现为球应力与偏应力的交叉作用，其硬化规律应遵循非关联塑性流动法则。本文通过侧限压缩试验和固结排水试验，对膨胀土的剪缩性、压硬性及两者的耦合关系作了阐述，并采用Mohr-Coulomb屈服条件，假定其屈服函数公式与塑性势函数公式相同，只是将内摩擦角φ替换成剪胀角ψ，从而推导了膨胀土的弹塑性本构关系，研究表明：Mohr-Coulomb本构模型高度适用于正常固结膨胀土土体，可以较精确地描述膨胀土的变形特性与本构关系
Abstract:
 Expansive soil is a kind of plastic special clay with higher strength. Its deformation characteristics are mechanically manifested as the cross action of spherical stress and deviatoric stress, and its hardening law should follow the law of non-associated plastic flow. In this paper, through the confined compression test and the consolidation drainage test, the shear shrinkage, compressibility and the coupling relationship of the expansive soil are described, and the Mohr-Coulomb yield condition is adopted, and the yield function formula and the plastic potential function formula are assumed. The same, except that the internal friction angle is replaced by the dilatancy angle, thereby derives the elastoplastic constitutive relationship of expansive soils. The study shows that the Mohr-Coulomb constitutive model is highly suitable for normally consolidated expansive soils and can be described more accurately Deformation characteristics and constitutive relationship of expansive soil.

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备注/Memo

备注/Memo:
［收稿日期］ 2021-11-30
［基金项目］ 国家自然科学基金（51708190）
［第一作者］ 聂去尘（1996-），男，江苏南京人，湖北工业大学硕士研究生，研究方向为岩土工程。
［通信作者］ 庄心善（1964-），男，河南周口人，湖北工业大学教授，研究方向为岩土工程及边坡工程。
更新日期/Last Update: 2023-08-26