SEISMIC PERFORMANCE OF MOMENT-RESISTING STEEL STRUCTURES WITH SLIT-FRICTION HYBRID DAMPER

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 527

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شناسه ملی سند علمی:

SEE08_110

تاریخ نمایه سازی: 27 خرداد 1399

چکیده مقاله:

Nowadays, slit dampers and friction dampers are mostly used to reduce the damage of structures during the earthquakes. In this study new dissipation system called slit-friction hybrid damper (SFHD) is introduced as the combination of these dampers that can be used in a lateral load resisting system to improve the seismic performance of the steel structures. Accordingly, 5 and 10 stories of steel structures are considered where the SFHD is added to the system as a brace. Using seven pairs of far field acceleration records, these models were analyzed based on non-linear static analysis and nonlinear dynamic analysis. According to the result, by adding the SFHD, increased stiffness by 17% in retrofitted structures so, force –displacement of curve, decreases by 20% in push over analysis. Also, displacement in time history analysis up to 55% reduces in average. The possibility of collapse decreases about 57% in structures including the SFHD in comparison with original structures.

نویسندگان

Azadeh Khoshkroodi

Ph.D. Student, Department of Structural Engineering, Azad University, Zanjan, Iran

Hossein Parvini Sani

Associate Professor, Department of Structural Engineering, Azad University, Tehran, Iran