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http://dx.doi.org/10.11112/jksmi.2013.17.1.094

A Study on the Characteristics of Dynamic Behaviors for Continuous PSC Girder Bridges with Integral Pier Cap  

Jeong, Young Do ((주)포스코건설 R&D Center 기술연구소)
Koo, Min Se (인하대학교 토목공학과)
Yi, Seong Tae (인하공업전문대학 토목환경과)
Kim, Hee Sung (동서대학교 건축토목공학부 토목공학전공)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.17, no.1, 2013 , pp. 94-105 More about this Journal
Abstract
Recently, the construction industry has been changed in such a way that the cost for bridge construction should be optimized or reduced. Therefore, bridges are required be cost-effective in terms of initial construction as well as in the maintenance during service stage. In order to reduce the cost for bridge construction, the Rahmen typed structure, in which the bridge components from superstructure to substructure are integral, has many advantages to reduce the size of structural members including girders, since the loadings from superstructure may be transferred to substructure through the connecting rebars such as stud, etc. This paper studied on the continuous Up and Down Prestressed Concrete (UD PSC) girder bridge in which the reinforced concrete pier cap is integral with the part of girders in superstructure. In previous studies, it is known that the structural behavior of continuous UD PSC girder bridge is quite different compared to the one of the bridges with conventional bearings or shoes to support the loading from girders. Nevertheless, it has hardly been studied about the structural behavior of bridge with UD PSC girder. Therefore, in this study, various dynamic behaviors of continuous UD PSC girder bridge with integral pier cap have been analyzed using numerical method. Furthermore, an equation to evaluate the impact factor is suggested for the UD PSC girder bridge which has two to three continuous spans.
Keywords
Integral pier cap bridge; Dynamic behaviors; Time history analysis; Impact factor; Speed parameter;
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