翘曲扭转影响下具有大边梁的曲线梁桥分析  

Analysis of curved girder bridges with the big external girder considering the warping and twisting effects

作　　者：瞿尔仁[1] 甄晓霞[1] 吴涛[1] 张乾坤[1] 何刚[1] 

机构地区：[1]合肥工业大学土木建筑工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2002年第1期46-50,共5页Journal of Hefei University of Technology：Natural Science

摘　　要：由于曲线梁桥的外边梁受力较内梁显著增大 ,在曲线梁桥的设计过程中 ,采用具有大边梁的曲线梁桥将使结构受力更为合理。文章考虑到结构翘曲扭转的影响 ,利用多余刚度的弹簧系数法 ,同时结合曲梁的符拉索夫方程 ,对具有大边梁的曲线梁桥进行分析 ,推导出弹性支承反力的计算公式 ,据此求得荷载横向分布影响线 。In the design of a curved girder bridge,adopting the big external girder will be more reasonable because the external girder of the curved girder bridge bears more loads than inner girders. In this paper,a detailed analysis of curved girder bridges with the big external girder is made by using the spring coefficient method of redundant rigidity and В.З.Впасов equation of curved girders and taking the warping and twisting effects into accounts. The calculation formulae of elasticity supporting reactions are deduced, then the transversal distributing influence line of loads is obtained.The presented results provide a theoretical basis for the load calculation of such structures.

关 键 词：曲线梁桥 大边梁 弯扭耦合 弹性支承反力 翘曲扭转 

分 类 号：U448.42[建筑科学—桥梁与隧道工程]