| 影响HDPE膜与砂土接触面摩擦特性因素的斜板试验研究 |
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| 引用本文： | 李志斌,徐超,叶观宝,廖星樾.影响HDPE膜与砂土接触面摩擦特性因素的斜板试验研究[J].岩土力学,2006,27(12):2289-2293. |
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| 作者姓名： | 李志斌 徐超 叶观宝 廖星樾 |
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| 作者单位： | 同济大学,岩土工程重点实验室,上海,200092;同济大学,土木工程学院地下建筑与工程系,上海,200092 |
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| 摘 要： | 使用斜板仪量测了HDPE膜与砂土接触面的摩擦特性参数。为了分析影响摩擦特性的因素，试验中使用3种粗糙度的HDPE膜和3种状态的砂。为了模拟低应力条件下的接触特性，斜板仪的正应力控制在1．0～9．0kPa之间。试验结果表明接触面的尺寸、HDPE膜的粗糙程度、砂的干湿状态和密实度对接触面的摩擦特性有影响，其影响分别为：（1）接触面尺寸越大，摩擦角越大；（2）HDPE膜越粗糙。摩擦角越大；（3）潮湿砂土与HDPE膜接触面的摩擦角大于干燥砂土的；（4）松散砂土与HDPE膜接触面的摩擦角小于密实砂土的。
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| 关 键 词： | 斜板仪 HDPE膜 砂土 摩擦特性 影响因素 |
| 文章编号： | 1000-7598-（2006）12-2289-05 |
| 收稿时间： | 2005-08-08 |
| 修稿时间： | 2005年8月8日 |
Research on factors influencing HDPE-sand interface frictional properties by tilting table tests |
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| LI Zhi-bin,XU Chao,YE Guan-bao,LIAO Xing-yue.Research on factors influencing HDPE-sand interface frictional properties by tilting table tests[J].Rock and Soil Mechanics,2006,27(12):2289-2293. |
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| Authors: | LI Zhi-bin XU Chao YE Guan-bao LIAO Xing-yue |
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| Institution: | 1. Key Laboratory of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, School of Civil Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | Frictional parameters of HDPE-sand interface are measured using tilting table device. In order to analyze the factors influencing frictional properties, three kinds of HDPE with different asperities and three kinds of sands with different states are used in the experiments. Tilting table tests are conducted under a normal stress range of 1.0–9.0 kPa to simulate frictional characteristics under low stresses. It is found from the results that the interface dimensions, asperity of HDPE, the state of sand have effects on the frictional properties. Test results indicate that: (1) the larger the interface, the bigger the frictional angle is; (2) the rougher the HDPE surface, the bigger the frictional angle is; (3) frictional angle of wet sand and HDPE interface is bigger than that of dry sand; (4) frictional angle of loose sand and HDPE interface is smaller than that of dense sand. |
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| Keywords: | tilting table device HDPE sand frictional property influencing factor |
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