摘要
文章以薄壁曲杆理论为基础,合理地假设了三个剪力滞翘曲位移函数,应用能量变分法推导出考虑曲率半径影响、弯、扭、剪力滞耦合的曲线箱梁弹性控制微分方程及其边界条件,为薄壁大曲率箱梁剪滞效应建立了理论分析基础。
Based on the theory of thin-walled curved bar, reasonable hypothesized a third-oral parabolic curve, the paper adoptes variational method on energy, taking the coupled relationship of the effect of curvature radius, bend, torsion and shear-lag into consideration, establishes the elastic governing differential equation and boundary conditions for thin-walled curved box girders, which set the foundation of theoretical analysis of shear-lag effect in thin-walled curved box girders.
出处
《四川理工学院学报（自然科学版）》
CAS
2006年第4期5-10,共6页
Journal of Sichuan University of Science & Engineering(Natural Science Edition)
基金
国家自然科学基金资助项目(50378019)
广东省自然科学基金资助项目(034066)
关键词
能量变分法
薄壁曲线箱梁
剪滞效应
模型
variational method on energy
thin-walled curved box girders
effect of shear-lag
model
