预应力锚索对边坡加固效应的模型试验研究  

Model Test Study on the Reinforcement Effects of Prestressed Cables on Slope

作　　者：李军[1] 许明[1] 张永兴[1] 唐树名[2] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆交通科研设计院,重庆400067

出　　处：《地下空间与工程学报》2006年第6期1029-1033,共5页Chinese Journal of Underground Space and Engineering

基　　金：交通部西部建设科技项目(200431874010)

摘　　要：随着山区公路路堑边坡预应力锚索技术的发展,为了研究预应力锚索对边坡的加固效应,针对预应力锚索锚固后的边坡含断层的均质岩体进行了相似材料室内模型试验。模拟了纯预应力锚索、预应力锚索-横梁、预应力锚索-纵梁以及预应力锚索-纵横梁4种加固方式的试件,根据不同加固方式试件的试验结果,研究了预应力锚索的受力特征、预应力锚索失效后边坡的承载能力变化以及框架梁的作用。最后得出了可供均质岩体边坡工程参考的相关结论。With the developing of the mountain area cutting- slope＇s prestressed cables method, it is necessary to research the reinforcement effects of prestressed cables on the slope . In this paper, the slope homogeneous rock with a fault strengthened by prestressed cables is investigated with laboratory similar model test. The author has simulated four model specimens with different reinforced ways, including prestressed cables only, prestressed cables - cross girder, prestressed cables - longitudinal girder and prestressed cables - gridwork girder. According to the results of different model specimens with different reinforced ways, the author investigated the load character of prestressed cables, the change of bearing capacity of slope after deactivating prestressed cables and the effect of framed girder. Finally, the author drew conclusions, which can be serve as reference for slope engineering of homogenous rock.

关 键 词：模型试验 边坡 断层 均质岩体 预应力锚索 框架梁 

分 类 号：TD824.7[矿业工程—煤矿开采]