کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6739204 1429074 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fiber beam-column model for diagonally reinforced concrete coupling beams incorporating shear and reinforcement slip effects
ترجمه فارسی عنوان
مدل پرتو ستون فیبر برای پرتوهای کوپلینگ بتن مسلح تقویت شده با اثرات لغزش برشی و تقویت کننده
کلمات کلیدی
مدل ستون پرتو فیبر، تیرهای اتصال بتن مسلح تقویت شده، تجزیه و تحلیل لرزه ای، رفتار هیسترتیک، رفتار برشی غیر خطی، لغزش تقویت کننده،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Due to the improved energy-dissipation and deformation capacity compared to the conventionally reinforced concrete (RC) coupling beams, diagonally RC coupling beams are recommended by the ACI 318 code especially for a span-to-depth ratio of less than two and thus acquire more and more applications in coupled wall and core tube systems for tall buildings. This paper proposes a sufficiently accurate and efficient displacement-based fiber beam-column model for the nonlinear seismic analysis of diagonally RC coupling beams with span-to-depth ratios ranging between one and five. The model is developed on the platform of a general FEA package MSC.Marc. First, the conventional fiber beam-column element is modified to consider the flexural contribution of diagonal bars. Then the new section shear force-shear distortion and slip deformation rules are proposed and incorporated into the modified fiber element, respectively, since both the shear and reinforcement slip are critical mechanisms influencing the seismic performance of the beam. The equations for critical model parameters including the cracked shear stiffness and chord rotation limit are developed and verified based on the results of sixteen test specimens collected from previous research. The model is utilized to simulate the collected specimens together with a coupled wall system and proves to be a powerful tool for the nonlinear seismic analysis of diagonally RC coupling beams and coupled walls with satisfied accuracy, efficiency and modeling convenience.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 153, 15 December 2017, Pages 191-204
نویسندگان
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