Civil Engineering / İnşaat Mühendisliği

Permanent URI for this collectionhttps://hdl.handle.net/11147/13

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2006 - 20103

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Author: search.filters.author.Eğilmez, Oğuz ÖzgürHas files: No

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Now showing 1 - 3 of 3
  • Research Project
    Moment aktaran mevcut çelik çerçeve kiriş kolon birleşimlerinin deprem davranışlarının cam elyaf takviyeli kompozit malzemeler kullanılarak geliştirilmesi
    (2010) Eğilmez, Oğuz Özgür; Dönmez, Cemalettin; Tanoğlu, Metin
    [No Abstract Available]
  • Conference Object
    Citation - Scopus: 1
    Strength Requirements of Permanent Metal Deck Forms Used for Lateral Bracing of Steel Bridge Girders
    (2006) Eğilmez, Oğuz Özgür; Helwig, T.A.; Herman, R.S.
    Permanent metal deck forms (PMDF) are often used in steel bridges to support the weight of the wet concrete during deck construction. Although the PMDF also has the potential to provide bracing to steel bridge girders during construction, the stiffness of the PMDF system as a lateral brace is drastically reduced by the eccentric support angle connection detail used to attach the forms to the girders. Laboratory tests have shown that a simple modification to the connection detail can substantially increase the stiffness of these PMDF systems and allow utilization of the PMDF for girder bracing. This paper presents results from a parametrical study conducted to determine stability and strength requirements for PMDF used to provide lateral bracing to steel bridge girders. Detailed FEA models were used to determine the stability bracing strength requirements for the fasteners that are used to connect the PMDF along the sidelaps of the sheets and to the girders. Design expressions are presented as well as an example demonstrating the use of the design equations.
  • Conference Object
    Improving the Ductility of Steel I-Beams Through the Use of Glass Fiber Reinforced Polymers
    (Curran Associates, 2010) Eğilmez, Oğuz Özgür; Alkan, Deniz; Özdemir, Timur
    Flange and web local buckling in beam plastic hinge regions of steel moment frames can prevent beam-column connections from achieving adequate plastic rotations under earthquake-induced forces. Reducing the flange-web slenderness ratios (FSR/WSR) of beams is the most effective way in mitigating local buckling as stipulated in the latest seismic design specifications. However, existing steel moment frame buildings with beams that lack the adequate slenderness ratios set forth for new buildings are vulnerable to local member buckling and thereby system-wise instability prior to reaching the required plastic rotation capacities specified for new buildings. This paper presents results from a research study investigating the cyclic behavior of steel I-beams modified by a welded haunch at the bottom flange and reinforced with glass fiber reinforced polymers at the plastic hinge region. Cantilever I-sections with a triangular haunch at the bottom flange and FSR higher then those stipulated in current design specifications were analyzed under reversed cyclic loading. Beam sections with different depth/width and flange/web slenderness ratios (FSR/WSR) were considered. The FEA results revealed that the GFRP reinforcement moderately improves the plastic local behavior of steel I-beams.