基于辛方法的薄壁箱梁剪力滞现象圣维南解析解

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (05): 777-781.

基于辛方法的薄壁箱梁剪力滞现象圣维南解析解

杨有贞a,王燕昌b

（宁夏大学a. 物理电气信息学院；b. 校长办公室，银川 750021）

收稿日期:2010-09-30 出版日期:2011-05-30 发布日期:2011-05-30

Symplectic Method Based Saint-Venant Analytical Solutions for Shear Lag Theory of Box Girder

YANG You-Zhen-a, WANG Yan-Chang-b

(a. School of Physics and Electrical Information Science;b. President’s Office, Ningxia University, Yinchuan 750021, China)

Received:2010-09-30 Online:2011-05-30 Published:2011-05-30

摘要/Abstract

摘要： 以弹性力学辛求解体系为基础，对薄壁闭口截面悬臂箱梁的剪力滞问题进行研究.将满跨均布荷载作用下的箱梁翼板部分进行简化，求解圣维南问题的解析解，给出了剪力滞和有效宽度的闭合多项式表达形式，并与国际规范及数值解加以比较.结果表明，所得公式表达简单，可以快速计算悬臂箱梁桥的有效宽度.

关键词: 薄壁箱梁, 有效宽度, 剪力滞系数, 辛方法

Abstract:

The closed polynomial expressions for shear lag coefficient and effective width were given at the condition of Saint-Venant analytical solutions to full-span uniform load on flange slab of box girder. Availability of formula in this paper was demonstrated by comparing results with international norm and measured values.

Key words: thin-walled structure, effective width, shear lag coefficient, symplectic method

中图分类号:

TU313

杨有贞a, 王燕昌b. 基于辛方法的薄壁箱梁剪力滞现象圣维南解析解[J]. 上海交通大学学报（自然版）, 2011, 45(05): 777-781.

YANG You-Zhen-a, WANG Yan-Chang-b. Symplectic Method Based Saint-Venant Analytical Solutions for Shear Lag Theory of Box Girder[J]. Journal of Shanghai Jiaotong University, 2011, 45(05): 777-781.

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