岩石受压应力应变关系的扰动状态理论描述

广东工业大学学报 ›› 2008, Vol. 25 ›› Issue (3): 86-89.

岩石受压应力应变关系的扰动状态理论描述

广州市建设委员会科学技术委员会办公室；内蒙古工业大学建筑工程学院；

出版日期:2008-07-01 发布日期:2008-07-01

Descriptions of Disturbed State Concept of Rock Stress-strain Relationship under Compression

1.The Office of Guangzhou Construction Science and Technology Committee,Guangzhou Metropolis Construction Commission,Guangzhou 510030,China;2.College of Civil Engineering and Architecture,Inner Mongolia University of Technology,Huhhot 010051,China

Online:2008-07-01 Published:2008-07-01

摘要/Abstract

摘要： 扰动状态理论(Disturbed State Concept theory,DSC)利用本构模型描述材料响应:材料的真实响应是两种参考响应的加权平均值,参考响应利用合适的本构模型得到.扰动状态理论结果和RMT150B岩石实验系统得到的实验结果都可以给出稳定的、连续的、包括软化段的应力应变关系曲线.在岩石单轴受压实验中,在一定应变范围内试件保持在连续体状态,这一点与扰动状态理论的理论基础一致.从压密点开始描述应力应变关系,压密点同时提供了应力应变关系曲线的计算初始值.应力应变与体应变的描述中,扰动因子演化方程分别以有效塑性偏应变值和当前轴向应变值作为自变量.对红砂岩的体应变描述也同样体现扰动状态理论的平均化思想.

关键词: 扰动状态理论；本构模型；岩石；体应变；

Abstract: Disturbed state concept(DSC)utilizes constitutive models to characterize material responses.The actual response is a weight average value of 2 conference state response values.Both DSC and RMT150B experiment system gives continuous and stable curve of stress-strain including its post peak part.In uni-axial compression experiment of rocks,within a certain scale of strain values,the specimen keeps continuity,and continuum is the premise of DSC.The description of stress-stain relationship starts wi...

Key words: disturbed state concept； constitutive model； rock； volume dilation；

郑建业；吴安利； . 岩石受压应力应变关系的扰动状态理论描述[J]. 广东工业大学学报, 2008, 25(3): 86-89.

Zheng Jian-ye1,Wu An-li2. Descriptions of Disturbed State Concept of Rock Stress-strain Relationship under Compression[J]. Journal of Guangdong University of Technology, 2008, 25(3): 86-89.

参考文献

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