既有石拱桥典型病害及其成因分析OA

Currently,there are a large number of stone arch bridges on highways and railway lines in China,especially in mountainous regions.Due to the convenience of material acquisition and simple construction,the proportion of stone arch bridges remains relatively high.To ensure the safe service of existing stone arch bridges,it is essential to conduct accurate technical condition assessments and load-bearing capacity evaluations.A comprehensive understanding and mastery of bridge diseases and their causes are prerequisites for such assessments.This paper summarizes the common diseases observed in existing stone arch bridges,identifies typical issues,and analyzes the causes of these diseases as well as their impacts on bridge structures.