| 干燥与饱水状态下砂岩的剪切蠕变特性研究 |
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| 引用本文： | 李男,徐辉,胡斌.干燥与饱水状态下砂岩的剪切蠕变特性研究[J].岩土力学,2012,33(2):439-443. |
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| 作者姓名： | 李男 徐辉 胡斌 |
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| 作者单位： | 1.中国地质大学（武汉） 工程学院，武汉430074；2.浙江大学 建筑工程学院，杭州 310058 |
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| 基金项目： | 湖北省自然科学基金资助项目(No.2007ABA315);教育部高等学校博士学科点专项科研基金项目(No.200804911526) |
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| 摘 要： | 以武汉越江隧道为工程背景，对干燥和饱水砂岩进行了剪切蠕变试验，并从剪切蠕变应变特征和剪切蠕变物理力学特性两方面进行了对比分析，重点阐述了水对砂岩剪切蠕变特性的影响，同时对其影响机制进行了相应的分析。结果表明，水能够增大砂岩的蠕变应变量和蠕变应变速率，并降低蠕变破坏强度值。因此，在重要工程设计和施工中，不能够忽视水对砂岩蠕变特性的影响。
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| 关 键 词： | 干燥 饱水 砂岩 剪切蠕变特性 |
| 收稿时间： | 2010-07-20 |
Shear creep characteristics of sandstone under dry and saturated states |
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| LI Nan
,
XU Hui
,
HU Bin.Shear creep characteristics of sandstone under dry and saturated states[J].Rock and Soil Mechanics,2012,33(2):439-443. |
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| Authors: | LI Nan XU Hui HU Bin |
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| Institution: | 1. Faculty of Engineering, China University of Geosciences, Wuhan 430074, China; 2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China |
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| Abstract: | Taking Wuhan Yangtze River tunnel as the project background,the shear creep tests on dry and saturated sandstones are conducted.Based on the test results,the effect of water on shear creep characteristics of sandstone and its mechanism are elaborated from both shear creep strain and mechanical properties.The results show that water can promote the development of creep strain and accelerate creep strain rate of sandstone and also decrease its creep rupture strength.Therefore,the effect of water on the creep characteristics of sandstone can not be ignored in the engineering design and construction of important project. |
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| Keywords: | dry water saturation sandstone shear creep characteristics |
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