【作者】 钟亮根； 郑明新； 张波； 方焘；

【Author】 ZHONG Liang-gen ZHENG Ming-xin Zhang Bo FANG Tao (Institute of Bridge & Road and Geotechnical Engineering;East China JiaoTong Univ;Nanehang 330013,China)

【机构】 华东交通大学道桥与岩土工程研究所；

【摘要】 探讨了狗牙根根系对浅层边坡土体的加固机理及土体含水量对根系加筋效应的影响.针对同一土质,通过室内相同含水量时不同含根量和相同含根量时不同含水量的根土复合体抗剪强度试验.研究了根土复合体、素土的抗剪强度.结果表明:根系具有提土体抗剪强度的能力;同时,随着含根量的增大,根土复合体抗剪强度先增大后减小,存在一个峰值,即临界含根量;而随着含水量的增大,根土复合体抗剪强度亦先增大后减小,在最优含水量附近达到最大值.更多还原

【Abstract】 The reinforcement mechanism of Bermudagrass root system to shallow slope and the impact of wa- ter content to root reinforcement are discussed.For the same soil condition,through the direct shearing test of root-soil under the different root content with the same water content and the different water content with the same root content in laboratory.In an effort to give insights into the shear strength of root-soil and soil.Re- sults indicated that root system can improve the shear strength of soil;Simultaneously,with the root content in- creasing,the shear strength of root-soil first increases and then decreases,a peak value is to be exist,that is crit- ical root content;and with the water content increasing,the shear strength of root-soil first increases and then decreases also,which is up to a maximum value in the’vicinity of optimum water content.更多还原