福安群益大桥为一典型的单圆管截面中承式钢管混凝土拱桥,随着城乡经济的发展,交通荷载不断增加,经检测该桥出现了不同程度的病害,为了保证其正常的使用功能和承载能力,对其吊杆系统进行了更换。本文对吊杆更换设计及施工流程进行了较为详细的阐述,研究内容可为类似工程实践提供技术参考。 Fu’an Qunyi Bridge is a typical CFST arch bridge with single-tube cross-section. With the development of economy in urban and rural areas, the traffic load is continuously increasing. After the bridge has been tested for varying degrees of disease, in order to ensure its normal use function and Carrying capacity, its boom system has been replaced. In this paper, the design and construction process of boom replacement is described in detail. The contents of the study can provide technical reference for similar engineering practice.