|
Title |
Torsional Behavior of Hybrid Truss Bridge according to Connection Systems
|
|
Authors |
정광회 ; 이상휴 ; 이종원 ; 최지훈 ; 김장호 |
|
DOI |
https://doi.org/10.4334/JKCI.2013.25.1.063 |
|
Keywords |
복합트러스교 ; 비틀림 거동 ; 격점구조 ; 비틀림 실험 ; HTB (hybrid truss bridge) ; torsional behavior ; connection system ; torsional test |
|
Abstract |
HTB (hybrid truss bridge) steel truss webs instead of concrete webs in prestressed box girder bridges has been widely used in, because of its structural benefit such as relatively less self-weight and good aesthetics due to open web structure. Since the core technology of this bridge is the connection system between concrete slabs and steel truss members, several connection systems were proposed and experimentally evaluated. Also, the selected joint system was applied to the real bride design and construction. The researches were performed on the connection system, since it can affect the global behavior of this bridge such as flexural and fatigue behaviors as well as the local behavior around the connection region. The evaluation study showned that HTB applied to a curved bridge or a eccentric loading bridge, characteristic has a weak torsional capacity compared to an ordinary PSC box girder bridges due to the open structure of HTB. In this study, three box shaped hybrid truss specimens were made and the torsional test and evaluation for them were performed in order to find out the torsional behavior of HTB according to the connection system.
|