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力学与实践 ›› 2015, Vol. 37 ›› Issue (1): 75-78.doi: 10.6052/1000-0879-13-517

• 应用研究 • 上一篇    下一篇

真三轴应力状态下岩石损伤本构模型

张慧梅1, 谢祥妙1, 张蒙军1, 杨更社2   

  1. 1. 西安科技大学力学系, 西安 710054;
    2. 西安科技大学建筑与土木工程学院, 西安 710054
  • 收稿日期:2013-12-10 出版日期:2015-02-15 发布日期:2014-04-10
  • 通讯作者: 张慧梅,1968 年生,女,教授,工学博士,博士生导师,从事力学与岩土工程方面的教学与研究工作. E-mail:zhanghuimei68@163.com E-mail:zhanghuimei68@163.com
  • 基金资助:

    国家自然科学基金(11172232,41272340),陕西省自然科学基金(2011JM1003),教育部新世纪人才支持计划(ACET-12-1044)和陕西省教育厅专项基金(11JK0525)资助项目.

DAMAGE CONSTITUTIVE MODEL OF ROCK UNDER THE TRUE TRIAXIAL CONFINEMENT STATE

ZHANG Huimei1, XIE Xiangmiao1, ZHANG Mengjun1, YANG Gengshe2   

  1. 1. Department of Mechanics, Xi'an University of Science and Technology, Xi'an 710054, China;
    2. College of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
  • Received:2013-12-10 Online:2015-02-15 Published:2014-04-10

摘要:

从岩石微元破坏服从Weibull 随机分布的特点出发,建立了真三轴应力状态下岩石损伤软化统计本构关系;根据应力应变关系的几何条件,建立了本构模型参数与岩石变形过程中应力应变曲线特征参量的理论关系,从而增强了模型的适应性;最后通过试验实测数据验证了模型的合理性.

关键词:

真三轴应力状态|Weibull 随机分布|Drucker-Prager 准则|本构关系

Abstract:

With the assumption that the rock micro-unit failure obeys the Weibull random distribution, the damage softening statistical constitutive relations are established under the true triaxial confinement state. Then, according to the geometrical conditions of the stress-strain relationship, the theoretical relationship between the constitutive model parameters and the stress-strain curve characteristic parameters during the process of rock softening and deforming is established, which enhances the adaptability of the model. Finally, the rationality of the model is verified by the measured data.

Key words:

true triaxial stress state|Weibull random distribution|Drucker-Prager criterion|constitutive relation

中图分类号: 

  • TU452