| 冻土三轴流变特性试验研究与冻结壁厚度的确定 |
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| 引用本文： | 张向东,张树光,李永靖,霍宝荣. 冻土三轴流变特性试验研究与冻结壁厚度的确定[J]. 岩石力学与工程学报, 2004, 23(3): 395-400 |
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| 作者姓名： | 张向东 张树光 李永靖 霍宝荣 |
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| 作者单位： | 辽宁工程技术大学土木建筑工程学院,阜新,123000 |
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| 基金项目： | 辽宁省博士启动基金(001083)资助项目 |
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| 摘 要： | 利用冻粘土试件进行了三轴蠕变试验，从而获得了复杂应力状态下的蠕变曲线。根据试验结果，建立了非线性蠕变方程来描述不同温度下冻粘土的蠕变特性。通过回归分析，得到了冻粘土蠕变参数的数值。根据冻土的流变理论，探讨了塑粘区的扩展规律，最后推导出了冻结壁厚度计算公式。同时，又进一步探讨了防止冻结管断裂的有效途径。
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| 关 键 词： | 土力学 冻土 冻结壁 冻结管 蠕变 流变理论 |
| 文章编号： | 1000-6915(2004)03-0395-06 |
| 收稿时间： | 2002-05-09 |
| 修稿时间： | 2002-09-06 |
TESTING STUDY ON TRIAXIAL CREEP PROPERTIES OF FROZEN SOIL TO DETERMINE THICKNESS OF FROZEN WALL |
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| Zhang Xiangdong,Zhang Shuguang,Li Yongjing,Huo Baorong. TESTING STUDY ON TRIAXIAL CREEP PROPERTIES OF FROZEN SOIL TO DETERMINE THICKNESS OF FROZEN WALL[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(3): 395-400 |
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| Authors: | Zhang Xiangdong Zhang Shuguang Li Yongjing Huo Baorong |
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| Abstract: | The specimens of frozen clay are used for carrying out the long-term creep tests under triaxial stress states so that the creep curves of the frozen clay are derived. According to the testing results, the nonlinear creep equation is proposed to describe the nonlinear creep property of frozen clay at different temperatures. By means of regression analysis, the values of creep parameters of frozen clay are obtained. The developing regularity of the viscoplastic region is approached with the aid of rhelogical theory of frozen soil and a formula is derived to calculate the thickness of frozen wall. At the same time the available methods are set forth to prevent fracture of the frozen pipes. |
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| Keywords: | soil mechanics frozen soil frozen wall frozen pipe creep rheological theory |
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