Amirkabir University of Technology Amirkabir Journal of Civil Engineering 2588-297X 55 7 2023 09 23 Soil-Structure Interaction Effect on seismic response of Low- and mid-rise steel moment frames equipped with Pall friction damper Soil-Structure Interaction Effect on seismic response of Low- and mid-rise steel moment frames equipped with Pall friction damper 1337 1362 5158 10.22060/ceej.2023.20880.7559 FA Mohsen Mohammadizadeh Head of Civil Engineering Department - Islamic Azad University of Sirjan 0000-0002-1437-8843 Mohammad Bostani Ph.D. Student, Department of Civil Engineering, Sirjan Branch, Islamic Azad University, Sirjan, Iran Eshrat Farkat Ph.D. Student, Department of Civil Engineering, Sirjan Branch, Islamic Azad University, Sirjan, Iran. Nima Mohammadizadeh Student of Civil Engineering, Department of Civil Engineering, Sirjan University of Technology, Iran.‎ Journal Article 2021 12 13 This research, investigates the behavior of 3, 5, and 8-story steel structures with medium bending steel frames in four cases without considering interaction (A), considering interaction (B), using damper (C), and in Damper usage mode considering soil and structure interaction (D) and the performance of pal dampers, fragility curve, has been discussed under seven acceleration maps of the near-pulse area. The innovation of the research is in the use of a pal friction damper and considering the effect of soil-structure interaction (SSI) to investigate the dynamic and seismic behavior of low and mid-rise intermediate moment steel. Modeling has been done in ETABS software and Incremental Dynamic Analysis (IDA) by LRFD method in Opensees software. Vulnerability levels introduced in HAZUS MH-MR4 have been used to investigate different failure modes of the models. The studied frames with dampers have been subjected to nonlinear analysis in three damping levels 5%, 10%, and 15%. The obtained results showed that: for state (B) in short structures, the order of displacement of floors remained almost constant and had no difference compared to state (A); But in case (C) it caused a decrease in the movement of floors and on the other hand in case (D) the movement of floors has been relatively reduced; And the pattern of displacement reduction in different records is different. Also, the use of a damper does not affect the amount of base shear of structures, but the amount of base shear has decreased in structures with more floors. This research, investigates the behavior of 3, 5, and 8-story steel structures with medium bending steel frames in four cases without considering interaction (A), considering interaction (B), using damper (C), and in Damper usage mode considering soil and structure interaction (D) and the performance of pal dampers, fragility curve, has been discussed under seven acceleration maps of the near-pulse area. The innovation of the research is in the use of a pal friction damper and considering the effect of soil-structure interaction (SSI) to investigate the dynamic and seismic behavior of low and mid-rise intermediate moment steel. Modeling has been done in ETABS software and Incremental Dynamic Analysis (IDA) by LRFD method in Opensees software. Vulnerability levels introduced in HAZUS MH-MR4 have been used to investigate different failure modes of the models. The studied frames with dampers have been subjected to nonlinear analysis in three damping levels 5%, 10%, and 15%. The obtained results showed that: for state (B) in short structures, the order of displacement of floors remained almost constant and had no difference compared to state (A); But in case (C) it caused a decrease in the movement of floors and on the other hand in case (D) the movement of floors has been relatively reduced; And the pattern of displacement reduction in different records is different. Also, the use of a damper does not affect the amount of base shear of structures, but the amount of base shear has decreased in structures with more floors. https://ceej.aut.ac.ir/article_5158_a6da680bcb675843419f2ba88a7ab7b8.pdf