大跨径波形钢腹板箱形桥梁的腹板稳定性计算  

Web Stability Calculation of Large-span Corrugated Steel-web Box-girder Bridges

作　　者：朱珊莹 唐朋胜 舒志云 

机构地区：[1]广西壮族自治区交通规划勘察设计研究院,广西南宁530011 [2]重庆市建筑科学研究院,重庆400020 [3]江西省交通设计研究院有限责任公司,江西南昌330000

出　　处：《西部交通科技》2015年第9期55-59,共5页Western China Communications Science & Technology

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%.

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 

分 类 号：U448.223[建筑科学—桥梁与隧道工程]