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Information Journal Paper

Title

Reinforcement of structures with concrete moment frame system by yielding metal damper with optimal cross section

Pages

  48-68

Abstract

 Reinforcement of structures with concrete moment frame system by submitting metal damper with optimal cross section has been done in the present study. For this purpose, the metal damper that is delivered after calibration and comparison of the results with a similar experimental sample is simulated in ABAQUS finite element software and the number of blades is determined to have the best performance. Loading was performed by displacement control method on the sample. To investigate the effect of damping on the behavior of the structure, the structural system with the proposed damper was compared with three types of bearing systems of different structures of concrete flexural frame, Concrete shear wall and bracing with different number of floors 8, 14 and 20. In this study, 4 groups of concrete structures were studied and compared in terms of lateral bearing system, including medium concrete moment frame with behavior coefficient (R = 5), medium concrete moment frame with shear wall with medium ductility, concrete moment frame with Medium ductility with EBF steel brace and Medium ductility concrete flexural frame with EBF steel brace Equipped with yielding metal damper. The studied structures have building frames with dimensions of 25 x 25 meters, which are modeled on 8th, 14th and 20th floors. Each dimension of the structure in the plan has 5 openings with lengths of meters. The height of each floor is 3 meters. In modeling structures with dampers, four types of dampers modeled with 4, 6, 8 and 10 flowing plates in the damper have been used. By comparing them, it has been determined that the damping with 10 flowing plates has better performance and the results of that structure in Comparison with other systems was used. In 8-story models, the maximum final displacement in the brace was 17% higher than in the damper. The maximum final displacement in the shear wall was 36% higher than that of the damper. The results of maximum final displacement in 20-storey structures showed that of the 4 types of load-bearing systems, the behavior of Concrete shear wall and damper has better performance than other systems. The maximum final displacement in the shear wall was 36% higher than that of the damper. The 8-story structure with dampers not only withstood the highest shear but also had the best performance compared to other systems. Structures such as the system with restraint, shear wall and moment frame had 26, 7. 7 and 62%, respectively. As a general conclusion from the results of the present study, it seems that in structures with a low number of floors, the use of the system with the proposed damper is more appropriate and in medium structures, the shear wall system has a better performance.

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    APA: Copy

    KHOSHVATAN, MEHDI, & POURAMINIAN, MAJID. (2023). Reinforcement of structures with concrete moment frame system by yielding metal damper with optimal cross section. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, 9(10 ), 48-68. SID. https://sid.ir/paper/1033821/en

    Vancouver: Copy

    KHOSHVATAN MEHDI, POURAMINIAN MAJID. Reinforcement of structures with concrete moment frame system by yielding metal damper with optimal cross section. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING[Internet]. 2023;9(10 ):48-68. Available from: https://sid.ir/paper/1033821/en

    IEEE: Copy

    MEHDI KHOSHVATAN, and MAJID POURAMINIAN, “Reinforcement of structures with concrete moment frame system by yielding metal damper with optimal cross section,” JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, vol. 9, no. 10 , pp. 48–68, 2023, [Online]. Available: https://sid.ir/paper/1033821/en

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