河滩相软土地基路堤沉降变形分析  

Study on settlement patterns of embankment on soft ground of alluvial flat

作　　者：颜可珍[1] 王晓谋[2] 夏唐代[1] 

机构地区：[1]浙江大学岩土工程研究所,浙江杭州310027 [2]长安大学公路学院,陕西西安710064

出　　处：《岩土力学》2004年第7期1099-1101,1106,共4页Rock and Soil Mechanics

摘　　要：根据伊洛河河谷平原的河滩相软土地基沉降观测结果,用指数法和双曲线法,并配合最小二乘法拟合分析,推算了地基的最终沉降量及固结参数,运用于沉降计算,发现结果比室内试验更与实际接近。对路堤填筑过程中实测沉降资料的深入分析,总结出填土高度对沉降变形的影响规律,并提出了相应的临界填土高度为 2.5 m。This paper analyzes the site-measured settlement of the Yiluo River alluvial flat soft clay foundation in Henan province using the exponential method and the hyperbolic method, and calculates the final settlement and the consolidation parameters of the foundation. It is found that using the back-calculated permeability coefficient to calculate the settlement by FEA method is more close to the fact than the one calculated using test coefficient. Through analyzing a lot of field test data, the relationship between settlement and embankment height is summarized; and the critical embankment height 2.5 m on soft ground is obtained.

关 键 词：软土地基 路堤 沉降 固结参数 

分 类 号：TU433[建筑科学—岩土工程]