Analyses of Steel Bridge Circular Columns using Fiber Model considering Local Buckling

Civil Engineering Dimension

Kinoshita, K.¹ 

[1] Assistant Professor, Dept. of Civil Engineering, Gifu University;

关键词: Fiber model;    local buckling;    steel bridge circular columns;   

DOI  :  

来源: DOAJ

【 摘 要 】

One of the most concerned problems for analytical estimation of ultimate strength and ductility of steel bridge columns is the consideration of local buckling. Stress-strain curves with softening behavior to include local buckling in fiber model analysis method were proposed by several researchers. However, accuracy of those models is still relatively low. As a consequence, most steel bridge designs have been done using fiber model analysis method without consideration of local buckling. In order to improve the analytical response estimation of steel bridge columns, a fiber model analysis method considering local buckling is proposed in this study. In this method, multi-fiber elements were used to model the local buckling length to simulate local buckling deformation. The proposed method shows good results not only for estimating peak strength but also post-peak strength compared to previous experimental results. However, further research should be directed to improve the accuracy of the deformation modes.

【 授权许可】

Unknown