岩土力学2011，Vol.32Issue(2)：423-428,6.
土工格栅与砂土相互作用机制的拉拔试验研究
Researches on interacton mechanism between geogrid and sand by pull-out tests
摘要
Abstract
The complicated mechanism of interaction between soils and reinforcement is the key problem in the application of geosynthetic reinforced soil engineering.Through laboratory pull-out tests, the mechanism of interaction between sand and geogrid and the factors of grid metric features influencing the pull-out resistance have been explored.This research work tentatively reveals the action mechanism of transverse ribs and longitude ribs and the influence of grid rigidity on the pull-out resistance.The results indicate that the interface friction of longitude ribs and the passive resistance of transverse ribs develop basically simultaneously when the pull-out displacement is small; while the displacement becomes larger, the longitude ribs' fricton reaches gradually the peak value, the increaseing of pull-out resistance is mostly attributed to the development of transverse ribs' resistance.The tensile modulus and the structure stiffness of geogrids are the important factors affecting the mechanical charateristics of interface between soils and reinforcement关键词
拉拔试验/筋土相互作用/土工格栅/被动阻力/界面摩阻力分类
建筑与水利引用本文复制引用
徐超,廖星樾..土工格栅与砂土相互作用机制的拉拔试验研究[J].岩土力学,2011,32(2):423-428,6.基金项目
国家自然科学基金(No.50878154) （No.50878154）
上海市重点学科建设项目(No.B308). （No.B308）
