北仑港区服役近30年桥梁腐蚀调查及T形梁修复加固措施

Investigation of the Corrosion of the Bridges in Service in Beilun Port Area in the Past 30 Years and T-Beam Restoration and Reinforcement Measures

本文以服役近30年的4座沿海钢筋混凝土桥梁为研究对象,调查了桥墩、T形梁及基桩等各类构件腐蚀破坏现状,分析了腐蚀破坏原因,并针对不同腐蚀破坏等级的T形梁提出了相应的修复加固措施与对策,为沿海钢筋混凝土桥梁修复加固工作积累了宝贵经验,可供沿海类似钢筋混凝土桥梁结构修复加固工程参考、借鉴。

This paper takes four coastal reinforced concrete bridges serving for nearly 30 years as the research object,investigates the corrosion damage status of different superstructure components such as piers,T-beams and prestressing square piles,analyses the causes of corrosion damage,and puts forward corresponding repair and reinforcement measures for T-beam of different corrosion damage grades.This paper accumulates rich experience for the repair and reinforcement work of coastal reinforced concrete bridges,which can be used as reference for the repair and reinforcement of similar reinforced concrete bridge structures in coastal areas.