斜桩承台桩基沉降影响有限元分析  

Finite element analysis of settlement interaction of inclined pile caps

作　　者：缪云[1] 戴国亮[1] 龚维明[1] 

机构地区：[1]东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏南京210096

出　　处：《岩土工程学报》2010年第S2期208-211,共4页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金项目(50908048);国家科技支撑计划项目(2008BAG07B01)

摘　　要：马来西亚槟城二桥部分基础采用斜桩双承台,由于其采用斜桩基础,且桩基间距小于规范要求,沉降不方便计算。为控制其变形,需预估沉降值,通过有限元软件建立其中两个最具代表性的斜桩承台的空间模型,分为单承台和双承台两种情况,分析两种情况的沉降情况以及两承台间的相互影响,得出单承台和双承台两种情况下的沉降计算值以及变形情况,进而确定出双承台间的影响系数。同时比较桩身压缩量与总沉降的关系,结果表明沉降主要是由桩身压缩量引起,且总沉降满足要求。Inclined two piles cap are used in foundation of Malaysia Penang No.2 Bridge,in which pile spacing of piles is less than requirement of specifications and calculation of settlement is difficult.To control the deformation and to estimate the settlement of foundation,two inclined piles cap spatial models are established with the finite element software including single pile and two piles cap models.The settlement and their interaction factor between the caps are analyzed under the most unfavorable work load.Compared the relationship between pile compression value and the total settlement,the results indicate that pile compression value is the main component of pile head settlement and the total settlement meet the requirement of design.

关 键 词：双承台桩基 有限元分析 斜桩 沉降相互影响 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]