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이성열 ( Lee Sung-reol ),김광수 ( Kim Kwang-soo ),김형열 ( Kim Hyeong-yeol ) 한국구조물진단유지관리공학회 2000 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.4 No.2
This paper presents a statistical survey of concrete design strength of highway bridges in service. In addition to the literature survey of specifications and design guidelines for highway bridges, total 1,487 structural and typical drawings of highway bridges are analyzed in this study, in which 443, 854, and 190 are for rigid frame, solid slab, and PSC I-girder types of bridges, respectively. The major objective of this study is to provide statistical data in the estimation of the design strength of concrete during the bridge rating process. Depends on the year of construction and type of bridge superstructures, several patterns of concrete design strength used in the bridge construction are identified and these can be used to estimate the design concrete strength of bridge, for which neither the nondestructive test data or structural drawings are available. The paper also includes the summary of investigation and the results of literature survey.
김광수 ( Kim¸ Kwang-soo ),이성열 ( Lee¸ Sung-reol ),박기태 ( Park¸ Ki-tae ),김형열 ( Kim¸ Hyeong-yeol ) 한국구조물진단유지관리공학회 2000 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.4 No.2
This paper presents the results of load rating for highway bridges in service. Total 1,380 bridges including 88 of steel box girder, 42 of preflex girder, 467 of PSC I-girder, and 783 solid slab types of bridges, respectively, are rated by using the bridge rating program coded in this study. The major objective of this study is to calculate the live load carrying capacity of highway bridges against the design load originally specified, in relatively efficient and systematical manners. All the data used in the rating are from the Bridge Management System. Allowable Stress Method and Load Factor Method are used as the rating methods and Inventory and Operating Ratings are used as the two rating levels. Conditions of bridge members are automatically considered in the rating equations by using the inspection data stored in the Bridge Management System. The results of load rating for highway bridges will be used for the essential data in the Bridge Management System.