佛山科学技术学院学报：自然科学版2011，Vol.29Issue(6)：28-33,6.
单索面矮塔斜拉桥宽幅箱梁施工阶段的剪力滞效应
Shear lag effect of the wide box girder of a single-plane extradosed cable-stayed bridge in construction stage
摘要
Abstract
In light of finite element theory and taking Shiwan Bridge as a reference, we established the spatial finite element model of the whole bridge and studied the mechanical characteristics and shear lag effect of girder with Prestressing and vertical concentration forces of a Single-plane Extradosed Cable-stayed Bridge in each construction stage. We found that Shear Lag Effect of the Wide Box Girder of a Single-plane Extradosed Cable-stayed Bridge is serious （the Maximum shear lag coefficient is 1.93）,and tensile region occurred in the flange. Additionally, the positive shear lag effect of girde is presented in the largest cantilever state and the distribution of stress is basically in accord with the stress diffusion principle.关键词
矮塔斜拉桥/施工阶段/剪力滞效应/有限元Key words
extradosed cable-stayed bridge/construction stage/shear lag effect/finite element分类
交通工程引用本文复制引用
彭爱勤,罗旗帜,陈玉骥..单索面矮塔斜拉桥宽幅箱梁施工阶段的剪力滞效应[J].佛山科学技术学院学报：自然科学版,2011,29(6):28-33,6.基金项目
广东省自然科学基金资助项目 （）
