植物根系固坡作用的试验与计算  

Test and Calculation of Effect of Plant Root on Slope Consolidation

作　　者：邓卫东[1] 周群华 严秋荣[1] 

机构地区：[1]重庆交通科研设计院,重庆400067 [2]华杰工程咨询有限公司,北京100029

出　　处：《中国公路学报》2007年第5期7-12,共6页China Journal of Highway and Transport

基　　金：国家西部交通建设科技项目(200431874010)

摘　　要：为了从力学机制上探讨植物根系的锚固作用,采用室内大型直剪试验和数值分析方法,对植物根系锚固的有关规律进行分析。研究结果表明:根系的加入不仅改变了土的抗剪强度曲线形态,而且形成了根系复合土,提高了土体抗剪强度;不同的根系分布形态、分布位置对根系土强度和边坡稳定性的影响不同,根系位于边坡中上部可以获得更好的固坡效果;总的来说,植物根系具有比较明显的固坡作用。In order to discuss the reinforced effect of plant root from the aspects of mechanical mechanism, authors analyzed the rule that how plant roots reinforced the slope by direct shear test and numerical analysis method. The research indicates that after the plant roots extend into soil, they modified the curve of soil shear strength and the two materials create complex soil which improve the soil shear strength. Strength and slope stability of complex vary with root distributing form and root distributing state; the plant root reinforcing effect will be better when the plant roots on the middle upwards of slope. The plant root can improve the slope stability obviously.

关 键 词：道路工程 边坡锚固 数值分析 植物根系 

分 类 号：U416.14[交通运输工程—道路与铁道工程]