| Title |
Post-Fire Damage and Structural Performance Assessment of a Steel?Concrete Composite Bridge Superstructure Using Fluid-Structure Interaction Fire Analysis |
| Authors |
윤성환(Yun, Sung-Hwan) ; 길흥배(Gil, Heungbae) |
| DOI |
https://doi.org/10.12652/Ksce.2021.41.6.0627 |
| Keywords |
강합성 교량 상부구조; 유체-구조 연성 화재해석; 열유동 해석; 화재손상평가 Steel?Concrete composite superstructure; Fluid?Structure interaction fire analysis; Heat flow analysis; Fire damage |
| Abstract |
The fire damage and structural performance of a steel?concrete composite superstructure under a highway bridge exposed to fire loading was evaluated. To enhance the accuracy and efficiency of the numerical analysis, a proposed fluid?structure interaction fire analysis method was implemented in Ansys Fluent and Ansys Mechanical. The temperature distribution and performance evaluation of the steel?concrete composite superstructure according to the vertical distance from the fire source to the bottom flange were evaluated using the proposed analysis method. From the analysis, the temperature of the concrete slab and the bottom flange of the steel?concrete composite superstructure exceeded the critical temperature. Also, when the vertical distance from the fire source was 13 m or greater, the fire damage of the steel?concrete composite superstructure was found to within a safe limit. |