| 考虑裂隙间相互作用情况下围压卸荷过程应力应变关系 |
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| 引用本文： | 周小平,哈秋聆,张永兴.考虑裂隙间相互作用情况下围压卸荷过程应力应变关系[J].上海力学,2002,23(2):227-235. |
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| 作者姓名： | 周小平 哈秋聆 张永兴 |
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| 作者单位： | [1]上海交通大学建筑工程与力学学院，上海200030 [2]重庆大学建筑工程学院，重庆400045 |
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| 摘 要： | 岩体的稳定性和变形特性主要决定于裂隙，同时裂隙间的相互作用对岩体的稳定和变形产生显著的影响。裂隙岩体在加载和卸荷条件下的力学特性有显著的区别。为此本文首次利用位错模型法结合叠加原理研究在围压卸荷条件下裂隙间的相互作用对岩体的变形的影响问题。文中推导了考虑裂隙间的相互作用情况下裂隙岩体围压卸荷过程的应力应变关系及应力强度因子表达式，且进行了数值计算。
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| 关 键 词： | 相互作用 围压卸荷 应力应变关系 裂隙岩体 位错模型 |
| 修稿时间： | 2001年5月23日 |
Constitutive Model for Crack-weakend Rock Mass under Confining Pressure Unloading with Crack Interaction Effect |
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| ZHOU Xiao-ping,HA Qiu-ling,ZHANG Yong-xing.Constitutive Model for Crack-weakend Rock Mass under Confining Pressure Unloading with Crack Interaction Effect[J].Chinese Quarterly Mechanics,2002,23(2):227-235. |
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| Authors: | ZHOU Xiao-ping HA Qiu-ling ZHANG Yong-xing |
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| Abstract: | The stability and deformation of rock mass are controlled by cracks, on which crack interaction obviously influences. The mechanical behavior of rock mass under unloading is different from that of rock mass under loading. In the paper, the interacting model under confining pressure unloading was investigated by means of dislocation model. Constitutive equations for crack-weakened rock mass and SIF under confining pressure unloading with crack interaction effect were determined, and the numerical results were given. |
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| Keywords: | crack interaction confining pressure unloading constitutive model |
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