软弱地基桥台台背填筑EPS的结构分析  

Structure analysis of filling at bridge abutment back on soft foundation by using EPS

作　　者：高燕希[1] 张军[2] 张起森[1] 

机构地区：[1]长沙交通学院道路与交通工程系,湖南长沙410076 [2]长沙交通学院河海工程系,湖南长沙410076

出　　处：《中国公路学报》2003年第3期27-30,共4页China Journal of Highway and Transport

基　　金：交通部"九五"行业联合攻关项目(95-05-01-46)

摘　　要：对利用EPS填筑软基上桥台台背的结构进行分析,探求解决软土地基上桥台台背填筑的技术问题。首先,对EPS块体以及混凝土和EPS结合体进行应力与应变分析,从理论上说明实现减少路面沉降的可行性;然后,进行软基上桥台台背填筑EPS的结构分析,说明采用EPS填筑路基可以从根本上解决桥路的差异沉降与路堤的残余沉降,达到防止桥头跳车以及台后填土与地基位移对桥台的侧向作用的目的。In this paper, with the structure analysis of filling at bridge abutment back on soft foundation by using EPS, a new technique for the treatment of filling at bridge abutment back on soft foundation is explored. First of all, analysis of the stress and strain are conducted for the EPS bulk, joint bulk of EPS and concrete to show the feasibility of reducing the settlement of the roadbed. Then, the structure analysis of filling EPS at bridge abutment on soft roadbed is also explored. The results show that the problems of residual settlement at the embankment and the differential settlement at the bridge abutment can be solved satisfyingly if EPS is used and the goal of preventing the jump at the bridge abutment, the lateral interaction from the back filling and the displacement of roadbed at the bridge is realized.

关 键 词：道路工程 软弱地基 结构分析 桥台 EPS材料 

分 类 号：U416[交通运输工程—道路与铁道工程]