左固右简箱型梁剪力滞效应的分析

Analytic Analysis for shear Lag Effect of the Fixed-simply-supported Box Girder

考虑边界条件为左端固定右端简支,外荷载作用为竖向集中力,用狄拉克函数将集中力等效为均布荷载,处理在集中力作用点处的边界条件,推导箱梁附加挠度和初等梁理论箱梁挠度的表达式。在此基础上,可以得到箱梁挠度的具体表达式。

Considering the fixed-simply-supported box girder,the concentrated force as external load.The concentrated force is equivalent to uniform load,the boundary conditions are treated at where the concentrated load acted.The addition deflection and the Euler beam deflection are derived.On these basis,the deflection of the box girder can be get.