软土层厚度对加宽路堤沉降变形特征的影响分析  

Analysis of the Impact of the Soft Soil Thickness on the Settlement Characteristic of Banding Embankment

作　　者：张建军[1] 董云[2] 

机构地区：[1]江苏淮安交通勘察设计研究院有限公司 [2]淮阴工学院建筑工程学院,江苏淮安223001

出　　处：《泰州职业技术学院学报》2014年第3期62-65,共4页Journal of Taizhou Polytechnic College

摘　　要：在S331大汕子隔堤段搭接路堤现场调查及室内外试验的基础上,采用plaxis建立有限元计算模型,分析了不同软土厚度下搭接路堤沉降变形特征。结果表明:对于填土高度一定的搭接路堤,当软土层小于一定厚度时,搭接路堤的差异沉降随软土层厚度的变化较小;随着软土层厚度增加,差异沉降随软土层厚度的增加而显著增加;当软土层大于一定厚度后,总体沉降及差异沉降均不再随软土层厚度的增加而显著增加。To discover the affect of soft soil thickness on the differential settlement of banding embankment, the article carried out numerical simulation on the banding embankment built up on the different thickness of soft soil based on the field investigation and test results of rely project S331 with plaxis. The results show： to a given fill height, when the soft soil is less than a certain thickness ,the differential settlement varied very small with the thickness for the overall settlement is not large, after that, it increased significantly with the soft soil thickness. And when the soft soil thickness is greater than another thickness, both the differential and overall settlement of band-ing embankment are no longer increased significantly. In addition, consolidation time and the growth of the thickness conform to logarithm model.

关 键 词：软土地基 搭接路堤 差异沉降 固结 

分 类 号：TU447[建筑科学—岩土工程]