摘要
从路基湿度对路基路面使用性能的影响出发,以非饱和土理论为基础,采用渗流有限元方法对几种具有代表性的公路渗沟进行分析,并与现行计算方法所得结果进行比较.由于没有考虑非饱和土的渗流情况,现行方法低估了渗流流量.所提出的饱和—非饱和渗流有限元法得到了工程实例的进一步验证.指出现行公路排水设计方法主要应从设计理论基础、材料设计参数与计算方法和手段三个方面进行改进.
The moisture of subgrade affects the performance of pavement structure. Based on unsaturated soil mechanics, an analysis regarding several typical underdrains is made through finite element method (FEM) and the result is compared with that of the existing method. Without considering the unsaturated seepage, the existing method underestimates the flux of seepage which is validated by a true project. The existing drainage design method should be improved in three aspects: (1) drainage design theory base; (2) parameters of material; (3) calculating method.
出处
《同济大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2006年第2期191-195,共5页
Journal of Tongji University:Natural Science
基金
西部交通科技项目(2001-318-000-29)
上海市重点学科建设基金资助项目
关键词
道路工程
排水
非饱和土
渗流
流量
highway engineering
drainage
unsaturated soil
seepage
flux