预应力对箱梁剪力滞效应影响研究

Research on the Influence of Prestressed Function on Shear Lag Effect for Box Girder

首先对剪力滞效应的原理进行了综述,运用有限元软件ANSYS对薄壁箱梁的剪力滞效应进行数值分析,分析受弯箱梁本身受力特点,得到并总结剪力滞效应沿跨径纵向分布的规律。目的在于研究预应力作用下箱梁剪力滞特点及箱梁剪力滞的变化规律,为工程实践提供一定的理论基础。

This paper summarizes the principle of shear lag effect, using finite element software ANSYS analysis the shear lag effect of thin-walled box girder, discusses the character of curved box girder,carry out the rule of shear lag effect along the longitudinal distribution models, in order to research the character and change rule of prestressed box girder shear lag effect,provide a theory foundation to engineering practice.