Under seismic action, local buckling in plastic hinge regions of CFT columns could be attributde to induced force and unrecoverable deformation. To study local buckling behaviors of CFT columns, a theoretical analysis formula of buckling stress through energy principle was proposed which included elastic buckling stress and inelastic stress. It was found that local buckling of CFT columns is greatly affected by the yielded elasticity modulus of steel tube. An extensive set of tests on forty-two CFT columns under axial force for local buckling behaviors is presented by taking into account the parameters of slenderness ratio, diameter-to-thickness ratio, and compressive strength of unconfined concrete. Comparing experimental and theoretical results, the characteristic of yielded elasticity modulus of steel tube was obtained.


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    Title :

    Research on Local Buckling Behavior of CFT Circular Columns


    Contributors:
    Zhang, Guowei (author) / Zhan, Yuan (author) / Wu, Kunlun (author)

    Conference:

    10th Asia Pacific Transportation Development Conference ; 2014 ; Beijing, China



    Publication date :

    2014-05-05




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English






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