期刊论文

Time and Space Evolution Model of Seepage Field of High Embankment with Coarse-grained Soil Under Combined Action of Dynamic Load and Rainfall

中文

中国公路学报

1001-7372

2020

33

9

45-53

10.19721/j.cnki.1001-7372.2020.09.005

国家自然科学基金项目(51978084,51678073) 湖南省自然科学基金项目(2020JJ4605) 长沙理工大学“双一流”科学研究国际合作拓展项目(2019IC13)。

本校为第一机构

为了研究动力湿化作用下渗流水在粗粒土高路堤内的迁移特性,自主研发设计制作一种室内喷洒降雨装置及车辆动力荷载模拟装置,开展动力湿化作用下粗粒土高路堤渗流场时空演化模型试验,从时间和空间2个角度描述渗流水在路堤内的迁移特性,然后根据模型试验结果,建立粗粒土渗流场时空演化机制,揭示动力湿化作用下的粗粒土高路堤边坡渐变失稳发育机理。研究结果表明:基于相似理论,开展粗粒土高路堤渗流场时空演化模型试验可以较为真实地反映粗粒土高路堤在动力湿化作用下渗流水的迁移特性;动力湿化作用下,湿润锋首先在路堤边坡表面形成,并逐渐从边坡表面向内部拓展,在坡顶处的拓展速率较小,坡脚处的拓...

This study aims to examine the migration characteristics of seepage water in coarse-grained soil high embankments under the combined action of rainfall and vehicle dynamic loading.An indoor spray rainfall and vehicle dynamic loading simulation device,designed and manufactured by the authors of this study,were used to carry out seepage flow in coarse-grained soil high embankment field model tests.The migration characteristics of seepage water in the embankment were described from the perspective of time and space.Then,according to the results of the model test,the evolution mechanism of the see...