Buckling of variable cross-sections columns in the braced and sway plane frames

• Autorzy: Nikolić R. R. , Djoković J. M. , Bujňák J.
• Języki publikacji: EN

Abstrakty

EN

Columns of the variable cross-sections are used in order to decrease the costs of the structure, for the purpose of easier maintenance, or for architectural reasons. Buckling of such columns is a problem that could appear in many steel structures, and could cause the loss of the structural stability. The critical buckling loading and the effective buckling lengths of such columns are analyzed in this paper for the cases of columns in the braced frame with the fixed and the sway frame with the movable nodes. Results are presented on corresponding diagrams what enables pinpointing the exact moment at which the particular column would lose its stability. The comparison of obtained results for the two types of frames are presented, as well.

Słowa kluczowe

EN

columns; variable cross-section; buckling; structural stability

PL

kolumny; przekrój poprzeczny; wyboczenie; stabilność strukturalna

• Wydawca: Komisja Inżynierii Budowlanej Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Roczniki Inżynierii Budowlanej
• Rocznik: 2016
• Tom: z. 16
• Strony: 31--39
• Opis fizyczny: Bibliogr. 10 poz., rys., wykr.

Twórcy

autor

Nikolić R. R.

• Faculty of Engineering, University of Kragujevac, Kragujevac, Serbia
• Research Center, University of Žilina, Žilina, Slovakia

autor

Djoković J. M.

• Technical Faculty in Bor, University of Belgrade, Bor, Serbia

autor

Bujňák J.

• Faculty of Civil Engineering, University of Žilina, Žilina, Slovakia
• Faculty of Civil Engineering and Architecture, Opole University of Technology, Opole, Poland

Bibliografia

• [1] Li Q. S., Buckling of elastically restrained nonuniform columns, Engineering Structures, 22, 10, 1231-1243, 2000
• [2] Li Q. S., Buckling of multi-step non-uniform beams with elastically restrained boundary conditions, Journal of Constructional Steel Research, 57, 7, 753-777, 2001
• [3] Ermopoulos J. Ch., Buckling length of non-uniform members under stepped axial loads, Computers and Structures, 73, 6, 573-582, 1999
• [4] Raftoyiannis, I. G., Ermopoulos, J. Ch., Stability of tapered and stepped steel columns with initial imperfections, Engineering Structures, 27, 8, 1248-1257, 2005
• [5] Singh K. V., Li, G., Buckling of functionally graded and elastically restrained non-uniform columns, Composites: Part B, 40, 5, 393-403, 2009
• [6] Li X. F., Xi L. Y., Huang Y., Stability analysis of composite columns and parameter optimization against buckling, Composites: Part B, 42, 6, 1337-1345, 2011
• [7] Ermopoulos J. Ch., Effective Buckling Length of Non-uniform Members, Journal Construction Steel Research, 42, 2, 141-158, 1997
• [8] EN 1993-1-1:2005 Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings, CEN Brussels, 2005
• [9] Li Q., Cao H., Li G., Stability analysis of bars with varying cross-section, International Journal of Solids and Structures, 32, 21, 3217-3228, 1995
• [10] Nikolić R. R., Djoković J. M., Bujnak J., Buckling of columns of the variable cross-sections, Proceedings of XXXXI Active of Experts on Steel Structures, Edited by V. Kvočak, Štrbske Pleso, Slovakia, 149-156, 19-21 October 2016