桩承式路堤土拱效应的应力计算方法比较  

Comparision of calculating methods for stress of soil arching effect of piled embankments

作　　者：范礼彬[1] 章定文[1] 刘松玉[1] 

机构地区：[1]东南大学交通学院,江苏南京210096

出　　处：《岩土工程学报》2013年第S2期1155-1158,共4页Chinese Journal of Geotechnical Engineering

基　　金："十二五"国家科技支撑计划课题(2012BAJ01B02)

摘　　要：在桩承式路堤土拱效应的分析中,桩土应力比是评价土拱效应的重要参数。土拱效应对分析桩承式路堤荷载传递和沉降变形有重要的影响。目前比较常用的几种土拱效应计算方法的假设条件和适用范围都存在一定的差异。Terzaghi和Low的计算方法仅适用于平面土拱中,Hewlett和Randolph和德国EBGEO 2004方法仅适用空间土拱,而英国规范(BS8006)的计算方法同时适用于平面土拱和空间土拱。讨论了常用土拱效应计算方法的基本假设差异,并结合几个工程实例分析了各种计算方法的适用性。The stress concentration ration is an important parameter in the analysis of soil arching effect of piled embankments. The soil arching effect has an important influence in the analysis of load transfer and the embankment settlement. The computational methods for soil arching effect have many differences in assumed conditions and scopes of application. The Terzaghi's and Low's methods are only applicable to 2D situation, the Hewlett & Randolph's and EBGEO 2004's methods are only applicable to 3D situation, and the BS8006's method is applicable to 2D and 3D situations. The differences between basic assumptions of the common soil arching computation effect are discussed, and the applications of different calculation methods are analyzed combined with engineering examples.

关 键 词：桩承式路堤 土拱效应 计算方法 桩土应力比 

分 类 号：U416.1[交通运输工程—道路与铁道工程]