Amirkabir University of Technology Amirkabir Journal of Civil Engineering 2588-297X 54 4 2022 06 22 Evaluation Performance of a Reinforced Concrete Column Subjected to Explosion Using Incremental Explosive Analysis Evaluation Performance of a Reinforced Concrete Column Subjected to Explosion Using Incremental Explosive Analysis 1441 1460 4518 10.22060/ceej.2021.19569.7202 FA Ali Seifinia Department of Civil Engineering, Faculty of Technical and Engineering, University of Hormozgan Mohammad Reza Mohammadizadeh Department of Civil Engineering, Faculty of Technical and Engineering, University of Hormozgan Journal Article 2021 01 29 To protect citizens and infrastructures in modern society, the safe design of structures against accidental explosion is a particular importance. In this study, the aim is to evaluate the performance of a reinforced concrete column using incremental explosive analysis (IEA), which is inspired by the method of incremental dynamic analysis. In order to achieve this goal, the concrete moment frame is designed for dead, live, and earthquake loads based on Iranian national regulations codes in Etabs software. Then, an exterior designed column related to the RC moment frame is analyzed under different ground blast intensities (hemispherical explosions at the ground level) at the stand of distances 3, 5, 7, 10, 12, 15, 17 and 20 meters. Eulerian-Lagrangian coupling method has been used to obtain the dynamic response of the structure against rapid explosion load in Autodyn. After completing the analysis and obtaining the structural response, the IEA Curves are drawn as a structural response in terms of the explosion intensity. Fragility curves also are obtained to determine the probability of exceeding each limit state. The results show that the probability of exceeding the limit state Ls-1 for intensity measure equals to 1 approximately equals to 80%, for the Ls-2 is about 60% and for the Ls-3 is 40%. Finally, the pressure-impulse diagram on a logarithmic scale is obtained as the combination of pressures and impulses which produce the column response in the three considered limit states. The results show that fragility curves and pressure-impulse diagrams, along with IEA curves provide useful information to design. To protect citizens and infrastructures in modern society, the safe design of structures against accidental explosion is a particular importance. In this study, the aim is to evaluate the performance of a reinforced concrete column using incremental explosive analysis (IEA), which is inspired by the method of incremental dynamic analysis. In order to achieve this goal, the concrete moment frame is designed for dead, live, and earthquake loads based on Iranian national regulations codes in Etabs software. Then, an exterior designed column related to the RC moment frame is analyzed under different ground blast intensities (hemispherical explosions at the ground level) at the stand of distances 3, 5, 7, 10, 12, 15, 17 and 20 meters. Eulerian-Lagrangian coupling method has been used to obtain the dynamic response of the structure against rapid explosion load in Autodyn. After completing the analysis and obtaining the structural response, the IEA Curves are drawn as a structural response in terms of the explosion intensity. Fragility curves also are obtained to determine the probability of exceeding each limit state. The results show that the probability of exceeding the limit state Ls-1 for intensity measure equals to 1 approximately equals to 80%, for the Ls-2 is about 60% and for the Ls-3 is 40%. Finally, the pressure-impulse diagram on a logarithmic scale is obtained as the combination of pressures and impulses which produce the column response in the three considered limit states. The results show that fragility curves and pressure-impulse diagrams, along with IEA curves provide useful information to design. https://ceej.aut.ac.ir/article_4518_597c7b407a02cc0a92167e7a371eca25.pdf