Document Type : Original Article
Authors
1
Ph.D. Candidate, Faculty of Engineering,, Islamic Azad University, Nour, Iran
2
Associate Professor, Faculty of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran
3
Assistant Professor, Faculty of Engineering, Islamic Azad University, Nour, Iran
10.22065/jsce.2023.397710.3119
Abstract
Nowadays, according to the global population growth, building and automobile generation are increasing. Hence, the vehicle collision to structures is increasing too, and these events may cause more vulnerability on structures. That's why, these structures need to be re-evaluated for strengthening and rehabilitating, but this issue is usually ignored and neglected. For this reason, in this study has been made an effort to determine, the rate of concrete structure vulnerability under vehicle collision on corner and middle columns with 10, 60 and 100 km/h speeds with19 seismic records simultaneously as incremental dynamic analysis (IDA). Also this speeds may be define as low, medium and high speeds. At initiation, by ETABS software and according to Iran's seismic design code of buildings (4th edition) a concrete structure with intermediate moment frame system was designed. Then to obtain the force-time spectrum, the vehicle collision and a concrete structure was simulated by LSDYNA software. After that this building was analysed under several force-time spectrum and 19 seismic records in near field. After that the fragility curves due to incremental dynamic analysis (IDA) were drawn. Finally, according to failure indicators from HAZUS standard, the probability of damage from vehicle collision and 19 seismic records on corner and middle columns was evaluated. Then it was specified, the collision causes permanent deformations on structural elements and increasing in vehicle speed will increase the horizontal displacement of story and reduces the base shear, as well as increases the rate of damage on structure finally. For instance, the rate of displacement ratio from vehicle collision to concrete structure with 10, 60 and 100 speeds, which indicates the rate of damage, applied on structure is equal 0.00152, 0.00515 and 0.023.
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