| 焊接土工格栅土中锚固强度的影响因素 |
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| 引用本文： | 徐超,陈洪帅,朱洪,朱英俊,石志龙.焊接土工格栅土中锚固强度的影响因素[J].水文地质工程地质,2012,39(4):61-65. |
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| 作者姓名： | 徐超 陈洪帅 朱洪 朱英俊 石志龙 |
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| 作者单位： | 1. 同济大学岩土及地下工程教育部重点实验室,上海,200092
2. 湖北力特土工材料有限公司,宜昌,443003 |
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| 基金项目： | 国家自然科学基金项目，湖北省交通运输厅计划项目 |
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| 摘 要： | 选择3种不同规格的焊接土工格栅,完成了格栅在粗颗粒土中的一系列拉拔试验。根据试验结果和土工格栅与土的相互作用机理,分析了各种格栅在土中的锚固强度及其影响因素。结果表明:在网格尺寸相同的情况下,节点剥离强度越大,则土中锚固强度越高;焊接土工格栅的节点剥离强度是其土中锚固强度的控制指标,但非唯一影响因素,网格尺寸和填土性质也对格栅土中锚固阻力的发挥具有重要影响。
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| 关 键 词： | 焊接土工格栅 节点剥离强度 粗粒土 锚固强度 拉拔试验 |
Factors influencing the anchorage strength of welded geogrid in soil |
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| XU Chao
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CHENG Hong-shuai
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ZHU Hong
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ZHU Ying-jun
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SHI Zhi-long.Factors influencing the anchorage strength of welded geogrid in soil[J].Hydrogeology and Engineering Geology,2012,39(4):61-65. |
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| Authors: | XU Chao CHENG Hong-shuai ZHU Hong ZHU Ying-jun SHI Zhi-long |
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| Affiliation: | 1(1.Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University,Shanghai 200092,China;2.Hubei Nete Geosynthetics Co., Ltd.Yichang 443003,China) |
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| Abstract: | A series of pull-out tests of 3 different selected types of welded geogrid buried in coarse grained soils are carried out in the present study.The anchorage strength and its influencing factors are analyzed based on the test results and according to the interaction mechanism of geogrid with soil.The results indicate that for geogrids with the same mesh size,the stronger the peel strength of a geogrid,the higher the anchorage strength in soils.The peel strength of welded geogrid is the controlling index,but not the only influencing factor to the geogrid anchorage strength in soil.The mesh size of georid and the property of soil are also of importance to the development of anchorage strength in soils. |
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| Keywords: | welded geogrid joint peel strength coarse grained soil anchorage strength pull-out test |
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