在利用前人研究成果的基础上,本文在原桥设计图纸和现场调查资料的基础上,进行桥梁应急维修加固前后承载能力极限状态下控制截面的强度验算,正常使用极限状态验算,并分析各种裂缝产生的原因,结合当地交通情况采用应急维修设计方案,总结出该大桥维修加固施工的几点体会。 Based on the previous research results, based on the original bridge design drawings and on-site survey data, the paper checks the strength of the control cross-section under the ultimate bearing capacity of the bridge before and after the emergency repair and reinforcement, and checks the limit state of normal use, The causes of cracks, combined with the local traffic situation using emergency maintenance design, summed up the bridge repair reinforcement construction experience.