STRENGTHENING REINFORCED CONCRETE FRAMES BY USING STEEL MEGA BRACING SYSTEM

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SHARIFI MOHAMMAD AMIN; JALALI ABDORAHIM

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Paper Information

Journal: JOURNAL OF STRUCTURAL ENGINEERING Year:2016 | Volume:12 | Issue:4 Page(s): 1-8

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Information Journal Paper

Title

STRENGTHENING REINFORCED CONCRETE FRAMES BY USING STEEL MEGA BRACING SYSTEM

Author(s)

SHARIFI MOHAMMAD AMIN | JALALI ABDORAHIM | Issue Writer Certificate

Keywords

SEISMIC RETROFITTING

PERFORMANCE-BASED DESIGN

NONLINEAR STATIC ANALYSIS

Abstract

The present study investigates the seismic performance of reinforced concrete moment frame system retrofitted with different steel bracing systems. Two types of structural combinations including concentric steel bracing system and steel mega bracing system were used in two types of structures with different numbers of stories. These two structures which are designed by 5 and 10 story reinforced concrete moment frame system have poor lateral stiffness. They were considered to compensate for the limitations of drift regulations in areas with high seismic risk and life safety performance level. Then, these frames are improved by concentric steel bracing system and mega bracing system. In this study, the nonlinear static (pushover) analysis was used to evaluate the performance of the structure under the influence of ground motions. Also chord rotation, story drift and base shear were used to compare the response of the improved structure. It was shown that the steel mega bracing system and the concentric steel bracing system are respectively the best types of steel bracing systems for upgrading and retrofitting the structures in terms of drift control regulations, the amount of base shear, the number of plastic hinges, the number of collapse elements and the economic issues.

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APA: Copy

SHARIFI, MOHAMMAD AMIN, & JALALI, ABDORAHIM. (2016). STRENGTHENING REINFORCED CONCRETE FRAMES BY USING STEEL MEGA BRACING SYSTEM. JOURNAL OF STRUCTURAL ENGINEERING, 12(4 ), 1-8. SID. https://sid.ir/paper/363893/en

Vancouver: Copy

SHARIFI MOHAMMAD AMIN, JALALI ABDORAHIM. STRENGTHENING REINFORCED CONCRETE FRAMES BY USING STEEL MEGA BRACING SYSTEM. JOURNAL OF STRUCTURAL ENGINEERING[Internet]. 2016;12(4 ):1-8. Available from: https://sid.ir/paper/363893/en

IEEE: Copy

MOHAMMAD AMIN SHARIFI, and ABDORAHIM JALALI, “STRENGTHENING REINFORCED CONCRETE FRAMES BY USING STEEL MEGA BRACING SYSTEM,” JOURNAL OF STRUCTURAL ENGINEERING, vol. 12, no. 4 , pp. 1–8, 2016, [Online]. Available: https://sid.ir/paper/363893/en

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