湖南大学学报（自然科学版）2011，Vol.38Issue(5)：19-23,5.
根系生态护坡的机理及试验研究
Research on Mechanism and Test of Roots for Ecological Protection Slope
摘要
Abstract
According to the ecological damage and instability of highway slopes, a theoretical research on the mechanism of ecological protection slope and an experimental study of the tensile of roots for its anchoring ability were presented.It has been proved in theory that soil shear stress is transferred to roots tensile stress through the frictional force of root-soil contact surface to improve soil shear strength, and soil granules around roots surface are aggregated through much high polymer produced from the growth of roots to resist slope soil erosion by rain.The tests have been based on the tensile strength of the roots of young robinia pseudoacacia.The results have shown that the maximum tensile strength of lateral root is higher than the maximum tensile strength of taproot, and the maximum value is up to 91.41MPa.Compared with the design tensile strength 210MPa of steel HPB235, its tensile strength is as great as 1/4～1/2.关键词
护坡/根系/机理/抗拉强度/试验Key words
slope protection/ roots/ mechanism/ tensile strength/ test分类
交通工程引用本文复制引用
肖本林,罗寿龙,邓友生,吴巍,郑建强..根系生态护坡的机理及试验研究[J].湖南大学学报（自然科学版）,2011,38(5):19-23,5.基金项目
交通运输部行业攻关项目(2008353342310) （2008353342310）
湖北省教育厅重点项目(D20091405) （D20091405）
