Research on Local Buckling Behavior of CFT Circular Columns

Under seismic action, local buckling in plastic hinge regions of concrete-filled tube (CFT) columns could be attributed 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.


  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 272-281
  • Monograph Title: Challenges and Advances in Sustainable Transportation Systems

Subject/Index Terms

Filing Info

  • Accession Number: 01527144
  • Record Type: Publication
  • ISBN: 9780784413364
  • Files: TRIS, ASCE
  • Created Date: May 15 2014 3:02PM