Browsing by Author "Vardaroglu, Mustafa"

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Stiffness Requirements for Shear Diaphragms Used for Stability Bracing of Slender Steel Beams
(Turkish Chamber Civil Engineers, 2017) Eği̇lmez, Oğuz Özgür; Akbaba, Andac; Vardaroglu, Mustafa
The buckling resistance of steel I-beams can be increased by providing lateral bracing along the length of the beams by either cross-frames or diaphragms. Metal sheeting that is often used in steel buildings and bridge constructions to support the fresh concrete, acts like a shear diaphragm and provides continuous bracing to steel beams. An adequate bracing system must possess sufficient stiffness and strength. A computational study was conducted to investigate stiffness requirements of shear diaphragms used to brace slender steel I-beams. Both double and single symmetrical axis sections were studied. Beams that are braced by cross-frames in addition to diaphragms have also been investigated. Stiffness requirements have been proposed for shear diaphragms used to brace slender steel I-beams.
Citation - WoS: 1
Citation - Scopus: 3
Strength Requirements for Shear Diaphragms Used for Stability Bracing of Steel Beams
(Asce-Amer Soc Civil Engineers, 2017) Egilmez, O. Ozgur; Vardaroglu, Mustafa; Akbaba, Andac
Light-gauge metal sheeting is often used in steel building and bridge industries as concrete deck formwork. Besides providing support to the fresh concrete, the sheeting acts as a shear diaphragm and provides continuous lateral bracing to the top flanges of the beams to which they are attached. An adequate stability-bracing system must possess sufficient stiffness and strength to control deformations and brace forces. Strength requirements for shear diaphragms are currently not well established. A computational study was conducted to develop strength requirements for shear diaphragms bracing simply supported steel beams. Both end-fastener and sidelap-fastener connections were modeled in the study. To the best of the authors' knowledge, this is the first study to quantify the stability-induced forces in sidelap fasteners. The effects of deck width and number of end and sidelap fasteners on brace forces were investigated. Expressions were developed to estimate the stability-induced brace forces in end-fastener and sidelap-fastener connections. (C) 2016 American Society of Civil Engineers.