| 岩石峰后应力应变特性的加卸载试验研究 |
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| 引用本文： | 李林峰,杨相如.岩石峰后应力应变特性的加卸载试验研究[J].公路,2011(5):131-136. |
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| 作者姓名： | 李林峰 杨相如 |
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| 作者单位： | 福建省交通科学技术研究所福建省公路水运工程重点实验室; |
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| 摘 要： | 为了研究隧道开挖过程中围岩在加卸载条件下的应力应变特性,采用TAW-2000微机控制岩石伺服压力试验机对辉绿岩进行了三轴加载和卸围压试验,通过分析岩石强度、体积变形在试验全过程中的变化规律及其与围压的关系,研究岩石的力学特性、变形特性及其破坏机理.结果表明,在卸载试验条件下,岩石在屈服破坏后,同样具有应变软化特性和破裂...
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| 关 键 词： | 岩石试验 应力应变特性 加卸载 体积应变 隧道工程 |
Experiment and Study on Stress and Strain Properies of Rock After Peak Strength Under Loading and Unloading |
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| LI Lin-feng,YANG Xiang-ru.Experiment and Study on Stress and Strain Properies of Rock After Peak Strength Under Loading and Unloading[J].Highway,2011(5):131-136. |
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| Authors: | LI Lin-feng YANG Xiang-ru |
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| Institution: | LI Lin-feng,YANG Xiang-ru(Fujian Key Laboratory of Highway and Water Transport,Fujian Research Institute of Communications Science and Technology,Fuzhou 350004,China) |
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| Abstract: | In order to study the stress and strain properties and damage mechanism of underground rock engineering under loading and unloading,Triaxial loading test and unloading confining pressure test are conducted with the TAW-2000 microcomputer control servo rock compression testing machine.The results show that,plastic strain softening properties and volume expansion properties are displayed not only in loading,but also in unloading,and greatly influenced by confining pressure.At the same time,the influence coeff... |
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| Keywords: | rock test stress and strain properties triaxial loading and unloading confining pressure volumetric strain tunnel engineering |
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