摘要
Abstract
The formation of cracks in continuous concrete box girders is attributed to multifactorial causes spanning construction practices,design parameters,and operational maintenance.This study integrates a representative bridge case with advanced detection techniques to evaluate crack dimensions,concrete cover thickness,material strength,structural stress distribution,and load-bearing capacity.From a construction-oriented perspective,the research systematically investigates the root causes of cracking,classifies crack typologies,and assesses crack severity using quantitative damage indices.Targeted remediation technologies-including crack injection,external prestressing,and localized reinforcement-are proposed based on failure mechanisms and serviceability requirements.The methodology and outcomes provide actionable guidelines and decision-making references for crack diagnosis,risk mitigation,and lifecycle management in concrete box girder bridge systems.关键词
混凝土箱梁/裂缝检测/病害评估/处置措施Key words
Concrete box girders/Crack detection/Damage assessment/Remediation measures分类
交通工程
