对三种强度破坏准则的物理解释

广东工业大学学报 ›› 2007, Vol. 24 ›› Issue (03): 76-83.

对三种强度破坏准则的物理解释

广东工业大学建设学院；同济大学道路与交通工程教育部重点实验室；广东工业大学建设学院广东广州510090；上海200092；广东广州510090；

出版日期:2007-08-10 发布日期:2007-08-10

Physical Explanations for Three Types of Failure Criteria

(1.Faculty of Building and Construction,Guangdong University of Technology,Guangzhou 510090,China;2.Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 200331,China)

Online:2007-08-10 Published:2007-08-10

摘要/Abstract

摘要： 基于红砂岩的真三轴破坏强度试验资料,通过建立试验破坏强度与预测破坏强度之间的目标误差函数,提出了辨析拓展的双剪强度、Lade-Duncan和Matsuoka-Nakai等3种破坏准则中相关参数的方法;通过3种破坏准则对岩土类材料的内摩擦角、破坏强度和破坏强度比值等随球应力的变化趋势等宏观物理力学现象的描述来解释与评述这3种破坏强度准则;同时通过岩土体宏细观受力破坏机制的分析,阐述了双剪强度破坏准则中折减系数的物理含义,并对这三种破坏准则的角隅函数给出了新的物理力学解释. 更多还原

关键词: 应力张量不变量；破坏准则；摩擦角；抗拉强度；角隅函数；

Abstract: Extended twin shear strength,Lade-Duncan and Matsuoka-Nakai failure criteria,could capture some important strength failure characteristics such as tensile stress,friction,and curved meridian et al.of geo-material with good accuracy.Based on true triaxial test data of red sandstone and target error function established between testing values and predicting values,corresponding parameters of the three failure criteria are identified through searching minimum values of the target error function.Bas...

Key words: stress tensor invariant； failure criterion； friction angle； tensile strength； ridge function；

杨雪强；宫全美；李彰明； . 对三种强度破坏准则的物理解释[J]. 广东工业大学学报, 2007, 24(03): 76-83.

YANG Xue-qiang1,GONG Quan-mei2,LI Zhang-ming1. Physical Explanations for Three Types of Failure Criteria[J]. Journal of Guangdong University of Technology, 2007, 24(03): 76-83.

参考文献

[1] 杨雪强,朱志政,何世秀. 对Lade-Duncan,Matsuoka-Nakai和Ottosen等破坏准则的认识[J]. 岩土工程学报. 2006(03)

[2] 杨雪强,刘祖德,何世秀. 对岩土体屈服强度准则的探讨(Ⅱ)──模型及其应用[J]. 湖北工学院学报. 2004(05)

[3] 杨雪强,刘祖德,何世秀. 对岩土体屈服强度准则的探讨(Ⅰ)——理论与模型[J]. 湖北工学院学报. 2003(06)

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