Abstract
Durability damages in varying degrees occur in numerous bridges during the service stage. Most problems caused by durability damages, including insufficient carrying capacity, aging, and breakage, among others, will directly threaten the safety performance of the structure and affect its normal condition. It requires field test to inspect in detail and reassess the structure, so that proper action can be taken to maintain the structure. Based on the Analytic Hierarchy Process, this study aims to establish a durability assessment model of a reinforced concrete arch bridge through membership function by combining fuzzy theory, to solve the sensitivity of different degrees of damages on assessment result by setting weight, and to conduct durability assessment of the superstructure of reinforced concrete bridges through the application of comprehensive weight variation fuzzy assessment. Results indicate that the structure is in a good state, and the durability assessment is in good agreement with the actual situation of the bridge.
Highlights
Durability of a structure is defined as the capability of such structure to complete a predetermined function within the given time under normal design, construction, application, and maintenance
This study aims to establish a durability assessment model of a reinforced concrete arch bridge through membership function by combining fuzzy theory, to solve the sensitivity of different degrees of damages on assessment result by setting weight, and to conduct durability assessment of the superstructure of reinforced concrete bridges through the application of comprehensive weight variation fuzzy assessment
To assess the durability of reinforced concrete arch bridge in a reasonable, scientific, and comprehensive manner, an assessment model is established based on the object hierarchy, as well as on Analytic Hierarchy Process (AHP)
Summary
Durability of a structure is defined as the capability of such structure to complete a predetermined function within the given time under normal design, construction, application, and maintenance. Durability assessment for existing reinforced concrete arch bridges, as well as their maintenance, has attracted researchers attention. The study on the theory and application of durability assessment for reinforced concrete arch bridge can reveal the potential risk in the structure and provide the correct information to make timely decisions for repairing, reinforcing, or removing bridges to avoid severe accidents. Since the middle of the 1980s, many researchers from home and abroad have extensively conducted in-depth studies on the durability evaluation of bridge structure through research stages from material to component of structures studies. Such studies have provided many assessment methods, including Probability Method, Artificial Neural Network (ANN), Analytic Hierarchy. Process (AHP), Grey Associated Analysis, and Comprehensive Weight Variation Evaluation
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