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http://dx.doi.org/10.12652/Ksce.2010.30.5A.407

Development and Experimental Performance Evaluation of Steel Composite Girder by Turn Over Process  

Kim, Sung Jae (연세대학교 토목공학과)
Yi, Na Hyun (연세대학교 토목공학과)
Kim, Sung Bae (연세대학교 토목공학과 BK21)
Kim, Jang-Ho Jay (연세대학교 사회환경시스템공학부)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.30, no.5A, 2010 , pp. 407-415 More about this Journal
Abstract
In Korea, more than 90% of the total number of steel bridges built for 40~70 m span length is a steel box-girder bridge type. A steel box-girder bridge is suitable for long span or curved bridges with outstanding flexural and torsional rigidity as well as good constructability and safety. However, a steel box-girder bridge is uneconomical, requiring many secondary members and workmanship such as stiffeners and ribs requiring welding attachments to flanges or webs. Therefore, in US and Japan, a plate girder bridge, which is relatively cheap and easy to construct is generally used. One type of the plate girder bridge is the two- or three-main girder plate bridge, which is a composite plate girder bridge that minimizes the number of required main girders by increasing the distance between the adjacent girders. Also, for the simplification of girder section, the stiffener which requires attachment to the web is not required. The two-main steel girder plate bridge is a representative type of plate girder bridges, which is suitable for bridges with 10 m effective width and has been developed in the early 1960s in France. To ensure greater safety of two- or three-main girder plate bridges, a larger steel section is used in the bridge domestically than in Europe or Japan. Also, the total number of two- or three-main girder plate bridge constructed in Korea is significantly less than the steel box girder bridge due to a lack of designers' familiarity with more complex design detailing of the bridge compare to that of a steel box girder bridge design. In this study, a new construction method called Turn Over method is proposed to minimize the steel section size used in a two- or three-main girder plate bridge by applying prestressing force to the member using confining concrete section's weight to reduce construction cost. Also, a full scale 20 m Turn Over girder specimen and a Turn Over girder bridge specimen were tested to evaluate constructability and structural safety of the members constructed using Turn Over process.
Keywords
Two-and-three steel plate girder; economical bridge type; turn over; composite girder; confining concrete;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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