الفهرس 
LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
ABSTRACT
The design of laterally unsupported steel I-section beams currently requires
the use of multipJe equations controlled by local and lateral-torsional
buckling behaviour accompanied by steel yielding. According to the
Egyptian code of practice, three distinct zones are specified for steel
member behaviour. Each zone has equations for defining the moment
resistance or the allowable bending stress of the section. To simplify the
design procedures, a single equation is proposed for the calculation of the
moment resistance of l- section steel beams in case of section design via the
LRFD concept. The proposed equation is applicable to all the previously
mentioned distinct zones. Another single equation is proposed for section
design using the ASD concept. The proposed equations include all the
parameters considered by different codes. Results obtained using the
proposed equations have been compared to those obtained adopting the
ECP-LRFD (2008), the ECPSCB-ASD (2001) the AlSC-LRFD (2005) and
the CAN-CSA-S16-01 (2007). A parametric study has been performed to
investigate the suitability of the proposed simple equations. For this purpose,
the multi-purpose finite element computer package àÀV ¨pU M) has been
used to model the beams. Both material and geometric nonJinearities have
been incorporated in the numerical analysis. Verification of the finite
element model has been conducted using available experimental results from
literature. The proposed equations results showed good agreement with
those obtained from the ECP-LRFD (2008), the ECPSCB-ASD (2001) and
the finite element model. Another proposed equation is introduced for the
design of steel l-section columns under pure compression force. Finally, an
interaction design equation is proposed for the beam-column I-sections.