既有刚架拱桥UHPC薄层加固技术研究  

Research on UHPC Thin Layer Strengthening Technology of ExistingRigid Frame Arch Bridge

作　　者：李伟 武建中 李胜才 LI Wei;WU Jianzhong;LI Shengcai(Guangdong Heli Traffic Maintenance Technology Co.,Ltd.,Guagnzhou 511400,Guangdong,China;Guangdong Communication Planning&Design Institute Group Co.,Ltd.,Guagnzhou 510440,Guangdong,China)

机构地区：[1]广东和立交通养护科技有限公司,广东广州511400 [2]广东省交通规划设计研究院集团股份有限公司,广东广州510440

出　　处：《广东交通职业技术学院学报》2025年第1期1-6,79,共7页Journal of Guangdong Communication Polytechnic

摘　　要：某刚架拱桥主要构件出现较多的受力裂缝、裂缝宽度超限、桥跨整体刚度不足等病害。通过对原桥进行验算分析,确定刚架拱产生病害的主要原因为横向联系及整体刚度不足,在尽量少增加结构自重情况下,采用UHPC薄层加固方案,较好地解决了刚架拱构件承载力不足、整体性差、刚度不足、后期维护困难等问题,相较于传统加固方案有显著优势,最后总结了UHPC薄层加固的主要技术要点,为类似工程提供参考。The main components of a rigid frame arch bridge have many stressed cracks,crack width exceeding limit,bridge stiffness insufficient,pier foundation erosion and other diseases.Through disease analysis and structural checking calculation of the original bridge,the main causes of the rigidly framed arch diseases is insufficient of horizontal connections and overall stiffness.Under the condition that the structural dead weight is increased as little as possible,the thin layer reinforcement scheme of UHPC is adopted.It solves the problems such as insufficient bearing capacity,poor integrity,insufficient stiffness and difficult maintenance of rigid frame arch members.Compared with traditional reinforcement schemes,it has significant advantages.Finally,this paper summarizes the main technical points of thin layer reinforcement of UHPC,which can provide reference for similar projects.

关 键 词：刚架拱桥 病害分析 UHPC薄层加固 技术要点 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]