计算力学学报Issue(6)：860-866,7.DOI:10.7511/jslx201306018
考虑剪切变形的薄壁箱梁畸变分析
Distortion analysis of thin-walled box girder taking account of shear deformation
摘要
Abstract
Based on the generalized coordinate principle ,displacement model and geometric equation are established ,and distortion shear stress is derived .By using he mixed variational principle ,a distortion an-alytical theory and finite beam segment method is presented which can sufficiently take account of shear deformation .Based on the new theory ,it is proved that so-called Bredt’s pure distortion does not exist in box girder with single cell and single box section ,and the definition of distortion center is clarified .Stud-ies on the effects of distortion shear stress on deformation indicate that it can be neglected for common box girder .关键词
薄壁箱梁/畸变/混合变分原理/剪切变形/畸变中心Key words
thin-walled box girder/distortion/mixed variational principle/shear deformation/distortion center分类
交通工程引用本文复制引用
徐勋,叶华文,强士中..考虑剪切变形的薄壁箱梁畸变分析[J].计算力学学报,2013,(6):860-866,7.基金项目
中央高校基本科研业务专项基金（SWJTU11BR010）资助项目． （）
