Experimental Investigation into Mechanical Behavior of Reinforced Earth in Highway Engineering
The use of reinforced earth in embankment filling can enhance the bearing capacity of the subgrade, reduce subgrade settlement after completion of construction, and reduce the thickness of the fill, thereby saving project investment costs. Mechanical behavior of reinforced earth in highway engineering is investigated by test method. Tests are performed to obtain influence of three key factors, namely reinforcement layers, layer spacing, and degree of compaction on the load - deformation behavior under monotonic loading, constant loading and repeated loading conditions. In addition, the test about tensilized film effect and the test about comprehensive frictional resistance are performed. Conclusions are drawn as follows: the ultimate bearing capacity of reinforced earth was significantly higher than prime soil, and multi-layer reinforced is better than single-layer reinforced. However, with the reinforcement layers increases, the enhanced effect of reinforced earth in terms of bearing capacity weakens. The long-term settlement and deformation of subgrade soil under load can be effectively reduced by using reinforced earth and there is an optimal reinforcement layers. As silty clay, to improve the reaction modulus of reinforced earth, the appropriate laying spacing of geonet is from 30cm to 60cm, and the best laying spacing is 40cm.
reinforced earth mechanical behavior in highway engineering experimental investigation
Yang Jiang Wenbin Sun Yuexin She Xiaomou Wang
Faculty of Architecture and Civil Engineering Huaiyin Institute of Technology Huaian,China Faculty of Architecture and Civil Engineering Huaiyin Institute of Technology Huaian, China School of Highway Changan University Xian, China
国际会议
三峡
英文
2384-2387
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）