Studying the seismic behavior of steel structures retrofitted with macro bracings

Alireza Hajizadeh¹ Masoud Lakzadeh² Mohammad javad Salmanizadeh³ Hosein Ghorbanalizadeh⁴

1) 1. Department of Civil Engineering, Technical and Vocational University (TVU), Tehran, Iran.
2) 2. Department of Civil Engineering, Technical and Vocational University (TVU), Tehran, Iran.
3) 3. Department of Civil Engineering, Student of Shahid Chamran Technical and Vocational University,Kerman, Iran.
4) 4. Department of Civil Engineering, Student of Shahid Chamran Technical and Vocational University,Kerman, Iran.

Publication : First international Conference on applied researches in civil engineering, architecture and urban planning (icarcau.com/1st)
Abstract :
Abstract For encountering lateral forces and also earthquake forces, various systems are considered. One of these options is dual systems which includes a combination of moment frame and another resistant system. In this study, non-linear static analysis was utilized on 15, 25 and 40-store samples in the limited element software ABAQUS for investigating various parameters. We considered the samples including two moment frame system in combination with steel shear wall and macro bracings with this assumption that steel consumption rate is equal in both states. The investigated parameters include final strength, elasticity stiffness, yield load, ductility factor, over- strength factor and behavior factor. The results of performed analyses show that generally by increasing the altitude due to more impressment of bending on behavior of steel shear walls system, the rate of reduction of rigidity, ductility and behavior factor in steel shear wall system is more than macro-bracings. Keywords: macro-bracing, steel shear wall, limited element software, ABAQUS.
Keywords : Keywords: macro-bracing steel shear wall limited element software ABAQUS.