Development of a physical theory model for the simulation of hysteretic behavior of steel braces

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Mühendislik Bilimleri Bölümü, Türkiye

Tezin Onay Tarihi: 2007

Öğrenci: ERTUĞRUL EMRE ÇALIK

Danışman: MURAT DİCLELİ

Özet:

Bracing members are considered to be effective earthquake-resistant elements as they improve the lateral strength and stiffness of the structural system and contribute to seismic energy dissipation by deforming inelastically during severe earthquake motions. However, the cyclic behavior of such bracing members is quite complex because it is influenced by both buckling and yielding. This thesis presents simple but an efficient analytical model that can be used to simulate the inelastic cyclic behavior of steel braces. This model achieves realism and efficiency by combining analytical formulations with some semi-empirical formulas developed on the basis of a study of experimental data. A brace is idealized as a pin-pin ended member with a plastic hinge located at mid-length of a brace Input parameters of the model are based on only material properties such as steel yield strength and modulus of elasticity as well as geometric properties including cross-sectional area, moment of inertia, etc. The obtained results are verified by the experimental and available analytical results.