Stability of Plate Girders in RBS Connections: A Numerical Approach

سال انتشار: 1389
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 155

فایل این مقاله در 6 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

JR_JSEE-12-1_005

تاریخ نمایه سازی: 12 آبان 1400

چکیده مقاله:

Steel moment frame connection with Reduced Beam Section (RBS) is one of several pre-qualified connections which have been proposed in FEMA ۳۵۰ for use in moment resisting frame structures. Previous studies on behavior of RBS connections are limited to connections with rolled sections and design requirements have been developed for such sections. Large size rolled sections are not readily available in developing countries like Iran and steel frame structures are usually built using plate girders. In such structures the slenderness ratios of web and flanges could greatly influence the seismic performance of the RBS connection. In this paper the effect of slenderness ratios of web and flanges on the behavior of RBS connections is studied by nonlinear finite element analyses. The analyses simulate inelastic local buckling of the girder as ductility and energy dissipating capacity of the connection are directly influenced by such inelastic behavior. Twelve RBS connections with various web and flange slenderness ratios are analyzed to evaluate the effect of slenderness ratios on ductility of the connection. The results indicate that FEMA- ۳۵۰ requirements for maximum slenderness ratios of web and compression flange are too conservative. Connections in which the slenderness ratios of girder web and flanges exceeded the allowable limits by up to ۳۰ percent have shown proper ductile behavior in the analyses.

کلیدواژه ها:

نویسندگان

A. Tajoddini

Islamic Azad University, Tehran