| Title |
Evaluation of Structural Behaviour of a Composite CFT Truss Girder Bridge |
| Keywords |
CFT(Concrete Filled Tubular);composite CFT truss girder bridge;natural frequency;bracing;yield strength;콘크리트 충전강관;CFT 트러스 거더 합성형교;고유진동수;브레이싱;항복강도 |
| 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 ㎜. 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. |