预应力CFRP加筋粘土路堤模型试验研究  

Model-Test Study of Clay Embankment Reinforced by Prestressed CFRP

作　　者：杜运兴[1] 刘新军[2] 尚守平[1] 周芬[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082 [2]国家安全生产监督管理总局,北京100713

出　　处：《湖南大学学报（自然科学版）》2007年第7期6-10,共5页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(50578062);国家安全生产监督管理总局安全生产科技发展计划(07-207)

摘　　要：采用路堤模型试验方法研究了预应力碳纤维增强塑料(CFRP)加筋路堤的力学性能.路堤模型采用梯形对称截面,并以粘土作为填料制作.设计了三种试验模型:粘土路堤模型、加筋粘土路堤模型、预应力加筋粘土路堤模型,三种模型几何尺寸、填料均相同.研究各模型在竖向荷载作用下的变形、侧向位移以及破坏模式,并进行了对比分析.试验表明,加筋后的路堤模型的承载力得到了明显提高,预应力加筋路堤模型的承载力会进一步增加.Model test was adopted to study the mechanical properties of embankment reinforced by prestressed CFRP. The section of the embankment model was symmetric trapezium and the clay was its filling. Three test models, which were the same in size and filling, were designed,such as clay embankment model, clay-embankment-model reinforced by CFRP and clay-embankment-model reinforced by prestressed CFRP. The deformation, lateral displacement and failure pattern of the three models under the action of vertical load were studied and compared. Results have shown that the carrying capacity of the reinforced embankment-model is improved, and for prestressed embankment-model, this improvement is more obvious.

关 键 词：预应力 加筋土 路堤 模型设计 

分 类 号：TU411[建筑科学—岩土工程]