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http://dx.doi.org/10.5762/KAIS.2015.16.9.6325

Spacing of Intermediate Diaphragms Horizontally Curved Steel Box Girder Bridges considering Bending-distortional Warping Normal Stress Ratio  

Lee, Jeong-Hwa (School of Civil, Environmental and Architectural Engineering, Korea University)
Lee, Kee-Sei (School of Civil, Environmental and Architectural Engineering, Korea University)
Lim, Jeong-Hyun (School of Civil, Environmental and Architectural Engineering, Korea University)
Choi, Jun-Ho (Research Institute for Mega Structures, Korea University)
Kang, Young-Jong (School of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.16, no.9, 2015 , pp. 6325-6332 More about this Journal
Abstract
Although distortions of horizontally curved box girder are more susceptible than which of the straight girder due to curvature effect, current domestic design standards does not present spacing of intermediate diaphragms for the curved box girder. In this study, parametric studies for straight and curved box girder considering distortional warping normal stresses based on linear finite element analysis were carried out. Single span curved girders were chosen for analysis based on current domestic bridge data with 1-6 of solid intermediate diaphragms, 0-30 degree of subtended angle, 30m and 60m of span length and 2-3m of flange width and web height. The adequate spacing of diaphragms for the box girder were suggested considering subtended angles and bending and distortional warping normal stress ratios with 5%, 10%, 15% and 20%. The analysis results were also compared to a current design standard and suggested spacing of diaphragm were evaluated.
Keywords
Box girder; Curved bridge; Distortion; FEM; Spacing of diaphragm;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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