圬工拱桥UHPC加固方案分析  

Analysis of UHPC Reinforcement Scheme for Masonry Arch Bridges

作　　者：崔德军 CUI Dejun(Chongqing Municipal Facilities Operation Guarantee Center,Chongqing 400015,China)

机构地区：[1]重庆市市政设施运行保障中心,重庆400015

出　　处：《黑龙江交通科技》2024年第4期109-113,117,共6页Communications Science and Technology Heilongjiang

摘　　要：针对圬工拱桥开裂突出的问题,在介绍圬工拱圈设计计算理论的基础上,结合圬工拱桥的实际运营情况,利用断裂力学理论,分析了圬工拱圈的开裂原因,提出了运用超高性能混凝土(UHPC)加固圬工拱桥的加固方案。通过红岩桥的应用验证,结果表明使用所提方案加固后的拱桥各截面都能满足正常使用极限和承载能力极限状态要求。In view of the cracking of masonry arch bridge,on the basis of introducing the calculation design theory of masonry arch ring,combining with the actual operation of masonry arch bridge,this paper analyzes the cracking reason of masonry arch ring by using fracture mechanics theory,and puts forward the reinforcement scheme of strengthening masonry arch bridge with UHPC.Through the application of Hongyan Bridge,the results show that all sections can meet the requirements of normal service limit and ultimate state of bearing capacity after using the proposed scheme.

关 键 词：圬工拱桥 拱圈 裂缝成因 UHPC 加固 

分 类 号：U445[建筑科学—桥梁与隧道工程]