基于TCK模型的非贯通节理岩体动态损伤本构模型

刘红岩; 杨艳; 李俊峰; 张力民

doi:10.11883/1001-1455(2016)03-0319-07

基于TCK模型的非贯通节理岩体动态损伤本构模型

doi: 10.11883/1001-1455(2016)03-0319-07

刘红岩^{1, 2,},
杨艳³,
李俊峰¹,
张力民^{4, 5}

1.
中国地质大学(北京)工程技术学院，北京 100083
2.
西藏大学工学院，西藏拉萨 850000
3.
黄淮学院建筑工程学院，河南驻马店 463000
4.
北京科技大学土木与环境工程学院，北京 100083
5.
河北承德钢铁公司，河北承德 067000

基金项目:

国家自然科学基金项目 41002113

国家自然科学基金项目 41162009

中央高校基本科研业务费专项基金项目 2652014019

中央高校基本科研业务费专项基金项目 2652015263

详细信息

作者简介:
刘红岩(1975-)，男，博士，教授，lhyan1204@126.com

中图分类号: O341
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- 被引次数: 0
出版历程
- 收稿日期: 2014-09-22
- 修回日期: 2015-02-22
- 刊出日期: 2016-05-25

Dynamic damage constitutive model for rock mass with non-persistent joints based on the TCK model

Liu Hongyan^{1, 2
,},
Yang Yan³,
Li Junfeng¹,
Zhang Limin^{4, 5}

1.
College of Engineering & Technology, China University of Geosciences (Beijing), Beijing 100083, China
2.
School of Engineering, Tibet University, Lhasa 850000, Xizang, China
3.
Architecture Engineering College, Huanghuai University, Zhumadian 463000, Henan, China
4.
Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China
5.
Hebei Chengde Iron and Steel Corporation, Chengde 067002, Hebei, China

摘要

摘要: 提出在岩体动态损伤本构模型中应同时考虑宏、细观缺陷；基于能量原理和断裂力学理论推导得出了同时考虑节理几何及力学特征的宏观损伤变量(张量)的计算公式；基于综合考虑宏、细观缺陷的复合损伤变量(张量)及完整岩石动态损伤Taylor-Chen-Kuszmaul(TCK)模型，建立了相应的单轴压缩下节理岩体动态损伤本构模型；利用该模型讨论了节理内摩擦角及节理长度对岩体动态力学特性的影响规律。研究表明，试件动态峰值强度随着节理内摩擦角的增大而增大，随着节理长度的增加而减小。
- 固体力学 /
- 动态损伤本构模型 /
- 非贯通节理岩体 /
- 宏观缺陷 /
- 细观缺陷 /
- 损伤耦合 /
- 应力强度因子
Abstract: This paper proposes that both macroscopic and mesoscopic flaws should be considered in the dynamic damage constitutive model for the jointed rock mass. Firstly, the calculation formula of the macroscopic damage variable (tensor) of the jointed rock mass is deduced based on the energy principle and the fracture mechanics theory so that the geometrical and mechanical parameters can be considered at the same time. Secondly, the compound damage variable (tensor) including both macroscopic and mesoscopic flaws and the Taylor-Chen-Kuszmaul model (TCK) for the intact rock are adopted to establish the corresponding dynamic damage constitutive model for the jointed rock mass under uniaxial compression. Finally, the effect law of the joint internal friction angle and the joint length on rock mass's dynamic mechanical property is examined with this model. The results show that the dynamic climax strength of the samples increases and decreases respectively with the increase of the joint internal friction and the joint length.
- solid mechanics /
- dynamic damage constitutive model /
- rock mass with non-persistent joints /
- macroscopic flaw /
- mesoscopic flaw /
- damage coupling /
- stress intensity factor

HTML全文

图 1 翼裂纹扩展模型示意图

Figure 1. Sketch of wing crack growth model

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图 2 非贯通裂隙岩体模型

Figure 2. Model of intermittently cracked rockmass

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图 3 计算模型

Figure 3. Calculation model

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图 4 岩体单轴压缩动态应力应变计算曲线

Figure 4. Dynamic stress-strain calculation curve of rock axial compression

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图 5 不同节理内摩擦角的试件动态应力应变曲线

Figure 5. Dynamic stress-strain curves of the samples with different joint internal friction angles

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图 6 不同节理长度的试件动态应力应变曲线

Figure 6. Dynamic stress-strain curves of the samples with different joint length

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参考文献(13)

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