路堤荷载作用下软基沉降特性研究  

On the settlement behavior of soft foundation under embankment loading

作　　者：蒋鑫[1] 邱延峻[1] 周成[2] 

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]铁道第二勘察设计院地路处,成都610031

出　　处：《水文地质工程地质》2006年第1期111-114,共4页Hydrogeology & Engineering Geology

基　　金：铁道第二勘察设计院科研项目(科2003-6)

摘　　要：为探究路基断面几何参数对软基沉降特性的影响,基于弹性Biot三维固结有限元程序PDSS,就路基顶面宽度、路基高度及边坡坡比等断面几何参数对软基沉降特性的影响进行较深入的模拟分析,重点探讨现行各类铁路、公路路基宽度下软基沉降变形的模式。宽窄路堤荷载作用下软基的沉降模式不同,宽路堤软土路基沉降盆表现为“W”形状,而窄路堤软土路基的沉降盆表现为“V”形状。Based on the FEM program with Biot＇s elastic model coupling consolidation theory, the settlement behavior of soft foundation under embankment loading is discussed. The researeh results reveal the two different kinds of settlement patterns of soft foundation under broad and narrow embankment loading. It＇s concluded that the broad embankment settlement shape is “W”, and the narrow embankment settlement shape is “V”.

关 键 词：有限元法 沉降 软土 路堤工程 

分 类 号：TU433[建筑科学—岩土工程]