الفهرس 
Elastic lateral torsional buckling for doubly symmetric I-beams
FLEXURAL CAPACITY OF STEEL I-BEAM STIFFENED WITH STIFENERS OR BATTEN PLATESOnly 14 pages are availabe for public view
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Abstract
Steel beams are usually used in all types of structures with various applications. This thesis investigates the behavior of laterally unsupported simply supported steel I-beams stiffened with different stiffeners and batten plate configurations under uniform bending moment. The sections used for this study are IPE 500 and HEB 260 which are standard hot rolled cross section profiles. Lateral torsional buckling (LTB) failure mode may control the flexural capacity of such beams. A parametric study is performed, using the nonlinear finite element analysis to determine the flexural strength of laterally unsupported simply supported beams stiffened with different configurations of stiffeners and batten plates. The increase in flexural strength for these configurations is determined and presented in the form of graphs showing the effect of different parameters on the flexural strength for studied cases. The study is conducted for various spans to cover both elastic and inelastic lateral torsional buckling behavior. Loading condition effect is also investigated for the cases of uniform bending moment and single concentrated load acting at mid-span of the beam. An analytical model is proposed and a simplified design procedure is suggested to obtain the flexural strength of the beam stiffened with double and single sided batten plates. This design procedure is compared to the finite element results and shows a good agreement.