刚架拱桥病害分析及加固方案研究

摘要

以某7孔30 m跨径刚架拱桥为工程背景，对其病害进行了分析研究，并根据研究结果，提出了加固施工方案，分析了加固方案的难点和重点，同时对加固施工过程进行数值模拟分析，结果表明外包混凝土加固拱肋方案满足大桥承载能力要求。%This paper takes a 7 hole 30 meters span rigid frame arch bridge as the engineering background,analysis the disease,and according to the result of study,propose the reinforcement construction scheme,analyzes the emphasis and difficulty of reinforcement scheme and rein-forcement process,numerical simulation,results show that outsourcing concrete arch rib reinforcement scheme satisfies the bridge bearing capac-ity requirements.