Effect of Torsional Irregularity on Seismic Performance of Steel Moment Resisting Frame Structures

  • سال انتشار: 1402
  • محل انتشار: فصلنامه تحقیقات پیشرفته در مهندسی عمران، دوره: 5، شماره: 1
  • کد COI اختصاصی: JR_ARCE-5-1_001
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 222
دانلود فایل این مقاله

نویسندگان

Gazal Gholami Hossein Abadi

M.Sc. Student, Department of Engineering, Aletaha Institute of Higher Education, Tehran, Iran

Hesam Varaee

Assistant Professor, Faculty of Civil Engineering, Amirkabir University of Technology, Tehran, Iran

چکیده

This paper examines the seismic damage of three-dimensional steel moment-resisting frame (SMRF) structures affected by torsional irregularities. Six steel ۳-D SMRF structures with varying degrees of irregularity were evaluated using incremental dynamic analysis (IDA) to determine their dynamic capacity. The aim of the study was to develop a quantifiable damage index based on the results of IDA. The yield point and the point of loss of lateral bearing (collapse threshold) on the IDA curve of each record were used to calculate the proposed damage index, which ranges from ۰ to ۱ and can be calculated individually in two horizontal directions. The study evaluated the feasibility of a meaningful match between the momentary torsion and the predicted damage by charting the ratio between these two quantities against the damage index findings. The analysis of the average damage at different levels of mild, medium, and high damage, as well as the comparison of the average damage index between the design accelerations corresponding to the return periods of ۴۷۵ and ۲۴۷۵ years, revealed a general trend towards higher damage in structures with greater irregularity.

کلیدواژه ها

Incremental dynamic analysis (IDA), Torsional Irregularity, Steel moment resisting frame (SMRF), Damage index, Seismostruct software

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.