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Title |
Dynamic Response of PSC I shape girder being used wide upper flange in Railway Bridge
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Authors |
박종권(Jong-Kwon Park) ; 장판기(Pan-Ki Jang) ; 차태권(Tae-Gweon Cha) ; 김찬우(Chan-Woo Kim) ; 장일영(Il-Young Jang) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.4.125 |
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Keywords |
PSC ; 상부플랜지 확장형 ; 회전반경 ; 휨효율 ; 동특성 ; 동적안정성 PSC ; Wide upper flange ; Radius ; Efficiency factor of flexure ; Dynamic characteristics ; Dynamic stability |
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Abstract |
The tendency of more longer span length being required economical in railway bridges is studying about PSC I shaped girder. In this case, it is important to analyze and choose the effective girder section for stiffness of bridge. This study investigates the dynamic properties and safety of PSC I shaped girder being used wide upper flange whose selection based on radii and efficiency factor of flexure for railway bridge in different span type. In addition, 40m PSC Box girder bridge adopted in Honam high speed railway is further analyzed to compare dynamic performance of PSC I shaped girder railway bridge with same span length. Time history response is acquired based on the mode superposition method. Static analysis is also analyzed using standard train load combined with the impact factor. Consequently, the result met limit values in every case including vertical displacement, acceleration and distort.
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