曲线连续箱梁桥的偏心距及其对支座反力的影响  

Eccentricity of curved continuous girder bridge and it's influence on bearing reaction

作　　者：许莉[1] 房贞政[1] 洪适[1] 

机构地区：[1]福州大学土木工程学院,福建福州350108

出　　处：《福州大学学报（自然科学版）》2009年第5期725-729,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省教育厅科研资助项目(JB07016);福州大学科技发展基金资助项目(2007-XY-14)

摘　　要：讨论圆弧曲线箱梁桥的偏心距及其对支座反力的影响.结果表明:内支座采用单支座布置的曲线连续箱梁桥可以通过改变支座的偏心距来调整支座的反力差.不同的支座布置形式合适的偏心距不同,并随着圆心角的增大而增大,边跨端部布置固定支座时偏心距较大,中间内支座采用墩梁固结时偏心距较小.This eccentricity of circular girder bridge and it s influence on bearing reaction are analysed in this paper. Results show that for the curved continuous girder bridge with single bearing at internal support,bearing reaction variation can be adjusted by means of varying the bearing eccentricity.The suitable eccentricity is different with various bearing arrangements.The bearing eccentricity is increasing with circular angle,and the eccentricity is bigger when fixed bearing sets at the end section,and the eccentricity is less when internal pier and girder are fixed.

关 键 词：曲线箱梁桥 偏心距 支座反力 圆心角 支座布置 

分 类 号：U448.42[建筑科学—桥梁与隧道工程] TU997[交通运输工程—道路与铁道工程]