A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Flexural-torsional buckling of stepped beams subjected to pure bending
The cross sections of continuous multi-span beams are sometimes increased suddenly, or stepped, at interior supports of continuous beams to resist high negative moments. An investigation of the elastic flexural-torsional buckling (FTB) behavior of I-shaped stepped beams was conducted using finite element method (FEM) and resulted in the development of design equations for beams having singly or doubly stepped cross sections within a laterally unbraced length. The finite element models are subjected to pure bending moment in the entire beam span. Results from the design equations were demonstrated with comparisons between the proposed equations or the weighted average approach (WAA) and FEM results for doubly and singly stepped beam spans of existing highway bridges. The new equations proposed definitely improve current design methods for the FTB problem and increase efficiency in building and bridge design. The proposed solutions can be easily used to develop new design equation for FTB resistance of stepped beams subjected to general loading condition such as a concentrated load, a series of concentrated loads or uniformly distributed load.
Flexural-torsional buckling of stepped beams subjected to pure bending
The cross sections of continuous multi-span beams are sometimes increased suddenly, or stepped, at interior supports of continuous beams to resist high negative moments. An investigation of the elastic flexural-torsional buckling (FTB) behavior of I-shaped stepped beams was conducted using finite element method (FEM) and resulted in the development of design equations for beams having singly or doubly stepped cross sections within a laterally unbraced length. The finite element models are subjected to pure bending moment in the entire beam span. Results from the design equations were demonstrated with comparisons between the proposed equations or the weighted average approach (WAA) and FEM results for doubly and singly stepped beam spans of existing highway bridges. The new equations proposed definitely improve current design methods for the FTB problem and increase efficiency in building and bridge design. The proposed solutions can be easily used to develop new design equation for FTB resistance of stepped beams subjected to general loading condition such as a concentrated load, a series of concentrated loads or uniformly distributed load.
Flexural-torsional buckling of stepped beams subjected to pure bending
KSCE J Civ Eng
Park, Jong Sup (author) / Kang, Young-Jong (author)
KSCE Journal of Civil Engineering ; 8 ; 75-82
2004-01-01
8 pages
Article (Journal)
Electronic Resource
English
Lateral-Torsional Buckling of Stepped Beams
| British Library Online Contents | 2003
Lateral-Torsional Buckling of Stepped Beams
| Online Contents | 2003
| British Library Online Contents | 2013
Flexural-torsional buckling behavior of aluminum alloy beams
| Springer Verlag | 2014
Flexural-torsional buckling of high-strength steel beams
| Elsevier | 2016