摘要
组合梁斜拉桥桥面板的截面宽度越来越宽,横向空间效应越来越显著,利用简化计算的方法往往不能正确地分析出横向应力的分布特点,对于宽跨比较大的主梁来说,应该采用空间有限元的方法分析桥面板的横向应力,确保结构设计的安全。运用这种方法,分析桥面板的横向应力分布,得出横向应力分布规律,希望对相关工程具有工程实际指导意义。
The deck of the cable-stayed bridge with composite beam adopts wider and wider section which leads to more and more remarkable transverse space effect. Usually, the correct analysis of the transverse stress distribution feature cannot be obtained by just using simplified calculating method. For relatively wider main beam, space finite element method should be applied to analyze the transverse stress distribution feature so as to make sure the security of the structure design. This paper not only analyzes the transverse stress distribution of bridge deck with mixed finite element method but summarizes the transverse stress distribution regularity as well. Hopefully, it can give practical guidance to the related engineering projects.
关键词
组合梁
横向应力
混合有限元
composite beam
transverse stress
mixed finite element
