| 摘要: |
| 筋材与填料土（筋土）的界面作用特性是影响加筋土工程的重要因素.以中砂为填料土，以聚丙烯双向土工格栅为筋材，通过直剪与拉拔试验，研究了不同中砂含水率、试验盒尺寸、试验类型对筋土界面作用特性的影响.引入黏聚力对比参数λc与内摩擦角对比参数λφ，进行了不同影响因素下加筋土黏聚力c与内摩擦角φ的定量对比.结果表明： 不同因素对黏聚力c的影响均大于对内摩擦角φ的影响，加筋对复合土体的贡献主要体现在黏聚力上.各因素对筋土界面作用特性影响的顺序为：试验类型＞含水率＞试验盒尺寸. |
| 关键词: 双向土工格栅 中砂 界面作用特性 影响因素 定量对比 |
| DOI：10.3969/j.issn.1007 9629.2013.04.018 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(41972205） |
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| On the Characteristics of Interface Action between Two WayGeogrids and Medium Sand |
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WANG Jian xiu1, HUANG Tian rong2
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1.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai200092, China;2.Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
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| Abstract: |
| The characteristic of interface action between reinforcement and soil was investigated by a series of pull out and direct shear tests by using reinforced soil consisting of medium sand and two way polypropylene geogrids. The factors affecting the characteristics of interface action between reinforcement and soil |
| Key words: two way geogrids medium sand characteristics of interface action factor quantitative comparison |
