应急抢修单梁置换钢混组合结构研究  

作　　者：柯亮亮 苗建宝 刘颜滔 

机构地区：[1]西安公路研究院有限公司,西安710065

出　　处：《科技创新与应用》2023年第23期156-159,共4页Technology Innovation and Application

基　　金：陕西省交通科技项目(20-04K)。

摘　　要：近些年,自然灾害频发,灾后应急抢修成为桥梁研究的重点,为了提升应急抢修工程单梁应急处置能力,该文针对传统单梁置换方法时效性差,提出一种钢混组合结构置换原混凝土结构单梁的方法,结合刚度匹配与截面转换的方法,采用有限元软件进行数值分析,得出采用30 m钢混组合梁置换混凝土箱梁腹板与底板厚度拟合公式,腹板与底板厚度变化规律,供同类结构参考。In recent years,with the frequent occurrence of natural disasters,post-disaster emergency repair has become the focus of bridge research.In order to improve the emergency handling capacity of single beam in emergency repair project.In view of the poor timeliness of the traditional single beam replacement method,this paper puts forward a method of steel-concrete composite structure to replace the original concrete structure single beam.By adopting the method of stiffness matching and section transformation,the finite element software is used for numerical analysis.The thickness fitting formula of web and bottom plate of concrete box girder replaced by 30m steel-concrete composite beam is obtained,and the variation law of web and bottom plate thickness is obtained,which can be used as a reference for similar structures.

关 键 词：应急抢修 单梁置换 刚度匹配 有限元分析 挠度分析 

分 类 号：U445.6[建筑科学—桥梁与隧道工程]