路堤填筑速率控制与动态临界高度分析  

Control for Filling Rate and Analysis for Dynamic Critical Height of Highway Embankment

作　　者：李海龙[1,2] 顾长存[1,2] 张浩[1,2] 曲晓凡 

机构地区：[1]河海大学土木与交通学院,江苏南京210098 [2]河海大学岩土工程科学研究所,江苏南京210098

出　　处：《水利与建筑工程学报》2013年第6期139-142,共4页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金青年项目(51008115)

摘　　要：沿海地区高速公路建设迅速,工程施工对于饱和软土路堤填筑速率不易控制。通过工程沉降观测曲线推求路堤填筑速率与沉降速率的关系,并考虑在路堤填筑过程中土体固结的时间效应得到动态临界高度下的一般填筑速率公式,结合青岛胶州湾地区工程实例,得到该地区的合理填筑速率一般在5 kPa/层,加载间隔时间为一周,此方法对该地区公路路堤填筑具有参考价值。The coastal express highway construction is developing rapidly, and in the engineering construction in saturat- ed soft ground embankment, the filling rate is not easy to control. Based on settlement observation curve, the relationship between the filling rate and settlement rate is deduced, and considering the time effect of consolidation, the general for- mula of the filling rate under dynamic critical height is got; combined with the engineering practice of Qingdao Jiaozhou Bay area, the reasonable filling rate in this region is got to be 5 kpa per layer, and the time interval of loading is one week, all these as mentioned above would have reference value for the filling construction of the highway embankment in the area.

关 键 词：软土地基 填筑速率 沉降速率 动态临界高度 

分 类 号：TU416[建筑科学—岩土工程]