摘要
为研究植被根系对边坡稳定和水土保持的作用,该文通过根土复合体的三轴实验分析了根对土体的加强作用,得到了含根体积比为0.5%和1%的根土复合体在10 kPa围压下的轴压极限载荷。同时使用基于周期性复合材料的均匀化理论,建立了根土复合材料胞元的数值计算模型。利用该模型,对两种含根体积比情况下的轴压极限载荷进行了数值计算,其结果和实验比较吻合。该文实验在青海进行,研究结果为将来治理青海水土保持问题提供了数据基础。
The soil reinforcement by roots was studied through triaxial tests of soil-root composites to explain the role of vegetation roots in slope enhancement and soil-water conservation. Axial limit loads were measured for 0.5% and 1% fiber volume ratio of the soil-root composites subjected to 10 kPa lateral pressures. Simulations conducted using a representative volume element for soil-root composites based on the homogeneous theory and a modified interface element agree well with the experimental data. These experiments in Qinghai provide base data for soil-water conservation in Qinghai, China.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第2期305-308,共4页
Journal of Tsinghua University(Science and Technology)
基金
新世纪优秀人才支持计划NCET-04-G983
关键词
极限载荷
根土复合材料
均匀化理论
界面单元
limit loads
soil-root composites
homogenization theory
interface element
