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http://dx.doi.org/10.12652/Ksce.2010.30.2A.149

Evaluation of Structural Behaviour of a Composite CFT Truss Girder Bridge  

Chung, Chul-Hun (단국대학교 토목환경공학과)
Kim, Hye-Ji (단국대학교 토목환경공학과)
Song, Na-Young (단국대학교 토목환경공학과)
Ma, Hyang-Wook ((주)대우건설 기술연구원)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.30, no.2A, 2010 , pp. 149-159 More about this Journal
Abstract
This paper presents an experimental study on the structural behavior of composite CFT truss girder bridge with full depth precast panels. The length of span is 20,000 mm. The CFT truss girder is a tubular truss composed of chord members made of concrete-filled and hollow circular tubes. To determine fundamental structural characteristics such as the strength and deformation properties of composite CFT truss girder bridge, static and dynamic tests were conducted. The natural frequencies calculated by the FEM are in good agreement with experimental results obtained from dynamic test. Bracing have only a small effect on the natural frequencies of composite CFT truss girder bridge as indicated by the FEM results. The yield strength and deformation of the composite CFT truss girder bridges were investigated through a static bending test. Besides, the test results showed that uniform distribution of shear connectors can be applicable in composite CFT truss girder bridges.
Keywords
CFT(Concrete Filled Tubular); composite CFT truss girder bridge; natural frequency; bracing; yield strength;
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