Evaluation of In-Service Bridges Assessment Methodology Using Decommissioned Concrete Bridges
Recently,demands for maintenance of deteriorated infrastructures,especially which are used for more than 30 years,are increasing in South Korea.“Special Act on the Safety Control and Maintenance of Establishment was first enacted in 1995 after several collapses of infrastructures.Since 1995,the government has conducted safety inspections periodically to find defects and suggest methods of repair or reinforcement.The full safety examination,which is the highest level of safety inspection in South Korea,conducts Condition Evaluation and Safety Evaluation.The former consists of visual inspection and material tests and the latter consists of load tests and structural analysis.With the results of the evaluations,the overall safety grade of the structure is determined.However,since these evaluations are performed with the structures in public states,the range of the assessment could be limited.Thus,verification of the assessments is demanded.On the other hand,deterioration models of concrete structures have been researched in about 20 years.Yet,most studies only focused on evaluating the conditions in material aspects,such as cracking induced by steel corrosion and deterioration by alkali-silica reaction.Thus,as the research results are mainly limited from laboratory material tests,it was inevitable for the models to contain large uncertainties.As a result,it needs to verify those deterioration models by performing also member scaled experiments.The study investigated manuals for safety assessment that are used nowadays.Also,we examined the member from a decommissioned bridge,and a bridge still is in used to evaluate assessment methodologies.Through destructive and non-destructive tests,proof load test and load rating,we evaluated closely the condition and structural behaviors of the bridges whose service life were ended.This study will provide a basis for improvement of structure condition evaluation.
safety inspection load rating concrete bridges deterioration decommissioned bridge
M.Kim N.Lee J.H.Lee J-Y.Cho J-S.Kim
Department of Civil and Environmental Engineering,Seoul National University,Seoul,Republic of Korea Department of Civil and Architectural Engineering,Seo Kyeong University,Seoul,Republic of Korea
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
1760-1769
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）