Investigation the Capacity and Energy Dissipation of Exterior Concrete Beam-Column Joints using Numerical and Sensitivity Analysis
محل انتشار: نهمین کنگره بین الملی مهندسی عمران
سال انتشار: 1391
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 961
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شناسه ملی سند علمی:
ICCE09_1217
تاریخ نمایه سازی: 7 مهر 1391
چکیده مقاله:
In this research, behavior of exterior concrete beam-column joints regarding to variable parameters is investigated. Experimental and analytical investigation of joint behavior is carried out. Two types of concrete including normal concrete (NC) and self-consolidating concrete (SCC) are used in Specimens. Also, two types of beam longitudinal bar anchorage are used in joint core. In the experimental part, 6 semi-scale exterior beam-column joints are manufactured and subjected to a constant column axial load and beam quasi-static cyclic load. In the analytical part, the Abaqus software is used for modeling and analyzing of test specimens. As the experimental and analytical joint capacities are in good agreement, the analytical model is used for parametric study. In this part of study, the variables include the type and strength of concrete and transverse reinforcement of column. Results show that increasing of transverse reinforcement in joint zone increases the load capacity of connection but it dose not effect on dissipated energy. Also, the load capacity and dissipated energy of connections increase with increasing the concrete strength, specially in specimens with 45° of beam longitudinal bars.
کلیدواژه ها:
exterior concrete beam-column joints ، finite elements ، self-consolidating concrete ، hysteresis diagram. dissipated energy
نویسندگان
h Shirazi
Civil Engineering Department, Mashhad Branch, Islamic Azad University, Mashhad, Iran
M. R. Esfahani
Civil Engineering Department, Ferdowsi University of Mashhad, Iran