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高填方黄土路堤的最优填筑密度分区研究
Research on Distributing Zones of Optimum Density in High Loess Embankment
【摘要】 根据黄土地区的工程实际状况 ,运用离心模型试验研究了黄土高路堤 (H =30m和H =6 3.8m)特性 ,获得了高路堤填土在不同干容重分区下 ,不同路堤边坡在无水、挡水、边坡淋水作用时 ,高路堤的稳定情况及其位移与应力状况。试验结果表明 :黄土高路堤稳定与沉降除与填筑密度密切相关外 ,水的浸入也是一个重要影响因素。在填土容重一定时 ,边坡坡度越陡 ,稳定安全性越差 ,沉降越大。
【Abstract】 According to the actual engineering conditions of loess regions,the authors firstly performed the experiment of centrifugal modelling on two kinds of high loess embankment.The important object is to study its stability,settlement and the state of stress.According to different dry unit weight,slope,water content and no water state and raining days,the authors consider that the stability and settlement of high loess embankment is closely related to the density of filling soil to which water content is an important affecting factor.When dry unit weight is constant,the more steep is the slope,the less is stability of slope,the larger is the settlement.
【Key words】 high loess embankment; stability; settlement; centrifugal model tests;
- 【文献出处】 四川大学学报(工程科学版) ,Journal of Sichuan University (Engineering Science Edition) , 编辑部邮箱 ,2002年01期
- 【分类号】U416.12
- 【被引频次】18
- 【下载频次】147