摘要
花天河大桥为大跨径波形钢腹板PC连续刚构桥梁,文章依托该工程背景,采用Midas/Civil建模配合局部屈曲强度、整体屈曲强度和合成屈曲强度的验算公式对花天河大桥全桥的波形钢腹板进行稳定性验算,并采用空间实体有限元程序MIDAS/FEA软件进行建模计算,剪应力计算结果显示考虑混凝土内衬及顶底板混凝土对剪力的分担作用后,波形钢腹板剪应力验算结果安全系数提高了20.6%。
Huatian River Bridge is a large-span corrugated steel-web PC continuous rigid frame bridge,and relying on this project background,this article conducted the stability calculation on the corrugated steel webs of whole Huatian River Bridge by using the Midas Civil modeling together with local buckling strength,overall buckling strength and synthetic buckling strength checking formulas,and used the spatial entity finite element program MIDAS/FEA software for modeling calculation,and the shear stress calculation results showed that,after considering the sharing effect on the shear by concrete lining and roof floor concrete,the safety coeffi-cient of corrugated steel web shear stress calculation results was increased by 20.6%.
出处
《西部交通科技》
2015年第9期55-59,共5页
Western China Communications Science & Technology
关键词
桥梁工程
波形钢腹板
稳定性
屈曲
非线性
有限元模型
Bridge engineering
Corrugated steel webs
Stability
Buckling
Nonlinear
Finite element model
