نوع مقاله : یادداشت فنی
نویسندگان
1 گروه عمران - دانشکده مهندسی - دانشگاه آزاد اسلامی واحد تفت - یزد - ایران
2 دانشکده عمران دانشگاه صنعتی اصفهان
3 استاد دانشکده عمران دانشگاه آزاد اسلامی تفت
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this research, 8 numerical models of steel shear wall with galvanized sheets and black sheet in precast concrete frames and steel frames with jointed beam to column connection and bending were investigated by performing static analysis in nonlinear mode under the effect of cyclic load according to ACI-374 loading protocol. In this study, the laboratory sample investigated by Wayne et al. was used to validate the numerical models. In the models with prefabricated concrete frame with joint beam to column connection, 25 x 25 cm concrete cross-section of 3 meters length was used for beams and columns. 6 rebars with a diameter of 22 mm were used for the column and 4 rebars with a diameter of 14 mm were used for the beam. In both beam and column elements, 8 mm diameter and 150 mm distance from each other is used. In order to connect the beam to the column, a corner of 150L was used as a seat under the beams. Also, the thickness of the steel sheets is considered to be 1 mm, which was connected to the boundary elements of the beam and column using a steel strip with a width of 10 cm and a thickness of 1 cm. This steel strip is buried in concrete by means of rebars with a diameter of 20 mm. Also, in order to connect the columns to the rigid floor, the columns were placed in a pot with dimensions of 290 x 290 and thickness of 10 mm. The results of this research showed that by changing the connection of the beam to the column from joint to bending, the parameters of initial stiffness, ultimate strength and energy absorption have increased significantly. In the models with prefabricated concrete frames with joint beam to column connection, the concrete beams and columns remain in elastic state until the end of analysis. Also, the results showed that the average value of the displacement magnification factor in the numerical models has increased by 78% compared to the value suggested in the ASCE publication for special steel shear walls, and in the models with a prefabricated concrete frame with beam-to-joint column connection, the ductility factor is an average Compared to similar models, the connection of the beam to the bending column has increased by 52%.
کلیدواژهها [English]
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