International Journal of Reliability, Risk and Safety: Theory and Application

International Journal of Reliability, Risk and Safety: Theory and Application

Detailed Seismic Risk Assessment of a Blast-Resistant Concrete Building

Document Type : Original Research Article

Authors
Sasan Motaghed 1
Nasrolla Eftekhari 2
Ahmad Reza Fakhriyat 3
Heshmatollah Mahmoodian 4
Masoud Dorfeshan 5
1 Department of Civil Engineering, Engineering faculty, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran
2 Faculty of Technology and Mining, Yasouj University, Choram, Iran
3 Center Of Monitoring Assessment and Prediction of Natural Disasters (MAP), Behbahan Khatam Alanbia University of Technology, Behbahan, Iran
4 Lorestan National University of Skills, Khorramabad, Iran
5 Department of Mechanical Engineering, Faculty of Engineering, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran
10.22034/IJRRS.2025.8.2.2
Abstract
Risk analysis plays a crucial role in pre-event planning by supporting informed decision-making and enabling effective strategies for crisis prevention and emergency response. This paper presents a comprehensive risk assessment of a specially designed concrete building with shear walls, engineered to withstand blast loads. Both deterministic seismic hazard analysis (DSHA) and non-extensive probabilistic seismic hazard analysis (NEPSHA) were conducted. The deterministic approach identified a peak ground acceleration (PGA) of 0.6g at the building site. NEPSHA estimated PGA values of 0.03g, 0.42g, and 0.74g for return periods of 10, 475, and 2,475 years, respectively. Hazard analysis results were visualized as hazard maps using GIS software. A three-story, blast-resistant concrete building with a 342-square-meter floor area and a shear wall lateral load-bearing system was modeled in OpenSees software. The structure's fragility curve was determined through incremental dynamic analysis (IDA), revealing a fundamental period of 0.08 seconds. The study quantified the probabilities of various damage levels at different hazard intensities and, using FEMA's Hazus methodology, estimated the resulting debris. Findings indicate that the shear wall-reinforced building, designed for blast resistance, satisfies the requirements for the design-level earthquake. However, its performance under severe and deterministic earthquake scenarios-particularly at the immediate occupancy performance level-warrants further investigation.
Keywords
Blast-Resistant Building
Petrochemical Facilities
Fragility Curve
Performance Level
Loss Estimation
Subjects
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International Journal of Reliability, Risk and Safety: Theory and Application
Volume 8, Issue 2
September 2025
Pages 11-21

  • Receive Date 18 April 2025
  • Revise Date 19 September 2025
  • Accept Date 20 September 2025