大跨径双曲拱桥加固设计与计算分析  

The Reinforcement Design and Calculation Analysis of Large-span Two-way Curved Arch Bridge

作　　者：李晓林 王帅 喻海涛 LI Xiaolin;WANG Shuai;YU Haitao(Changsha Science and Technology Testing Consulting Co.,Ltd.,Changsha 410076,Hunan,China)

机构地区：[1]长沙理工检测咨询有限责任公司,湖南长沙410076

出　　处：《工程技术研究》2024年第13期25-27,共3页Engineering and Technological Research

摘　　要：目前,双曲拱桥结构缺陷和病害逐渐显现,亟须对该类桥型进行加固改造。文章对某大跨径双曲拱桥加固设计进行了研究,通过调查桥梁现有病害和进行加固前、后有限元计算分析,确定最终加固设计方案。结果表明,大跨径双曲拱桥采用主拱圈增大界面、减少桥面系恒载、增强横向联系的加固设计方案,可有效改善双曲拱桥结构受力,提升承载能力和整体稳定性,设计方案可为同类桥型后期加固提供有益参考。At present,the structural defects and diseases of two-way curved arch bridge are gradually emerging,and it is urgent to reinforce and reconstruct this type of bridge.The reinforcement design of a large-span two-way curved arch bridge is studied.By investigating the existing diseases of the bridge and conducting finite element calculation analysis before and after reinforcement,the final reinforcement design scheme is determined.The results show that the large-span two-way curved arch bridge adopts the reinforcement design scheme of increasing the interface of the main arch ring,reducing the persistent load of the bridge deck system and enhancing the lateral connection,which can eff ectively improve the structural stress of the two-way curved arch bridge and improve the bearing capacity and overall stability.The design scheme can provide a useful reference for the later reinforcement of similar bridge types.

关 键 词：大跨径双曲拱桥 加固设计 有限元计算 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]