双曲拱桥加固方法综述

Review of Reinforcement Methods of Double Curved Arch Bridge

由于双曲拱桥的建造数量巨大且运营时间较长,近年来双曲拱桥的加固已成为较为热门的研究课题。通过查阅文献,总结了双曲拱桥病害的表现形式,分析了双曲拱桥的主拱开裂位置以及开裂机理,然后从上部结构和下部结构两方面综述了双曲拱桥的具体加固措施,上部结构的加固措施主要有增大截面加固法、预应力加固法、改变结构受力加固法、粘贴加固法、释能法和直接修补加固法,下部结构的加固措施主要有抛石防护加固法、扩大基础加固法、钢筋混凝土套箍加固法、增补桩基加固法和直接压浆加固法。通过对以上加固方法的梳理,提出了双曲拱桥加固中需要细致考量的问题,可以为同类双曲拱桥的加固提供参考。

Due to a large number of double-curved arch bridges and long operating hours,in recent years. the reinforcement of double-curved arch bridges had become a hot research topic. The manifestations of the diseases of the double-curved arch bridges were summarized by reviewing the literature. The main arch cracking position and cracking mechanism of the double-curved arch bridges were analyzed. Then the concrete reinforcement measures of the double-curved arch bridges are reviewed from the upper structure and the lower structure. The reinforcement measures of the upper structure mainly included increased section reinforcement method,prestress reinforcement method,changed structure stress reinforcement method,pasted reinforcement method,energy-released method,and direct repairing reinforcement method. The reinforcement measures of the lower structure mainly included the riprap protection reinforcement method,enlarged foundation reinforcement method,reinforced concrete hoop reinforcement method,increased pile foundation reinforcement,and direct grouting reinforcement method. Through the combing of the above reinforcement methods,the problems that need to be carefully considered in the reinforcement of the double-curved arch bridges were proposed,which can provide a reference for the reinforcement of the double-curved arch bridges.