| HDPE土工格栅在有约束条件下的蠕变特性试验 |
| |
| 引用本文： | 丁金华,周武华.HDPE土工格栅在有约束条件下的蠕变特性试验[J].长江科学院院报,2012,29(4):49-51. |
| |
| 作者姓名： | 丁金华 周武华 |
| |
| 作者单位： | 1.长江科学院 水利部岩土力学与工程重点实验室， 武汉 430010； 2.浙江大学 建筑工程学院，杭州 315800 |
| |
| 基金项目： | 国家自然科学基金项目(50808024/E0806) |
| |
| 摘 要： | 土工格栅的蠕变特性是影响其在永久性加筋土结构中应用的重要因素之一。目前，大多数蠕变试验是在无约束条件下进行的，与格栅在加筋土结构中应用的状态和条件有明显差别。采用HDPE土工格栅进行了一系列在砂土中不同荷载水平下的侧限约束蠕变试验，获得了格栅在砂土中的蠕变发展规律；并与无约束(在空气中)的蠕变试验成果相对比，结果表明，侧限约束可以显著减小格栅的蠕变量。
|
| 关 键 词： | 土工格栅 蠕变 侧限约束 砂土 |
| 收稿时间： | 2012-01-09 |
Creep Property of HDPE Geogrid with Sand Confinement |
| |
| DING Jin-hua
,
ZHOU Wu-hua.Creep Property of HDPE Geogrid with Sand Confinement[J].Journal of Yangtze River Scientific Research Institute,2012,29(4):49-51. |
| |
| Authors: | DING Jin-hua ZHOU Wu-hua |
| |
| Affiliation: | 1.Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Yangtze River Scientific Research Institute, Wuhan 430010, China;2.College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 315800, China) |
| |
| Abstract: | Creep of geogrid is an important property which affects its application in permanent reinforced structures.At the present time,most of the creep tests are carried out under unconfined conditions which were obviously different from the actual status of geogrid used in geotechnical engineering structures.A series of confined creep tests on HDPE(High Density PolyEthylene) geogrid are carried out in granular soil.The relation between creep deformation and time is obtained under different vertical pressures.The results show that the confined-creep strain are smaller than that obtained by common unconfined creep tests.Sand confinement could remarkably reduce the creep of geogrid. |
| |
| Keywords: | geogrid creep confinement sand |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《长江科学院院报》浏览原始摘要信息 |
|
点击此处可从《长江科学院院报》下载全文 |
