Application Research of Maintenance and Reinforcement Technology for Arch Bridge Foundation

Abstract In order to study the application of maintenance and reinforcement technology for arch bridge foundation, taking a reinforced concrete half-through arch bridge and a rigid frame arch bridges as examples, the appearance inspection and disease analysis of the bridge piers and pile foundations were carried out. Based on the modified theoretical calculation model, the analysis method of diseases and the maintenance and reinforcement technology were proposed. The method of the pier section enlargement and adding pile is adopted to strengthen the arch bridge foundation. The results show that according to the modified theoretical calculation model, the actual diseases including the distribution area of cracks and degradation degree are in good agreement with the theoretical calculation results. The reinforcement design of section enlargement and adding pile can provide a reference for the reinforcement of similar arch bridges.