Seismic Fragility Analysis of Torsionally-Coupled Steel Moment Frames Against Collapse

Document Type : Research Papers

Authors

1 M.Sc., Department of Civil Engineering, Isfahan University of Technology, Isfahan, Iran.

2 Professor, Department of Civil Engineering, Isfahan University of Technology, Isfahan, Iran.

Abstract

In this study, nonlinear dynamic response of 4, 7, and 10-story moment frame steel structures is investigated under seismic ground motions. An incrementally increasing intensity is accounted for to evaluate the collapse fragility curves of the same buildings under different values of torsional eccentricity. The site soil of the buildings is assumed to be composed once of a firm and then of a soft soil. As a distinction of this study, the realistic maximum possible value of eccentricity ratio for moment frames, including both stiffness and mass eccentricities, is shown to be 10-15% that is much less than peak values of the past studies. Because of the three-dimensional aspect of the study, the eccentricity is selected to be bi-directional and the horizontal components of the earthquake motion are applied concurrently. It is exhibited that while torsional eccentricity lowers the median collapse probability of the studied buildings, it does not have a sensible effect up to the eccentricity ratios not larger than 10%. Besides, the taller structures on the firm soil are affected more strongly from torsional eccentricity, as the median collapse acceleration decreases up to 46% for the 10-story building suffering from 15% eccentricity ratio on the firm soil.

Keywords

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References

AISC360-16. (2016). Specification for structural steel buildings, American Institute of Steel Construction (AISC), Chicago.
Altoontash, A. (2004). "Simulation and damage models for performance assessment of reinforced concrete beam-column joints", Ph.D. Thesis, Stanford University Stanford, California.
Anvarsamarin, A., Rahimzadeh Rofooei, F. and Nekooei, M. (2020). “Torsion effect on the RC structures using fragility curves considering with soil-Structure interaction”, Journal of Rehabilitation in Civil Engineering, 8(1), 1-21. https://doi.org/10.22075/jrce.2019.16080.1302.
ASCE/SEI 7-16. (2016). Minimum design loads and associated criteria for buildings and other structures, ASCE Standard ASCE/SEI 7-16, American Society of Civil Engineers (ASCE).
ASCE41-17. (2017). Seismic rehabilitation of existing buildings, ASCE Standard ASCE/SEI 41-17, American Society of Civil Engineers (ASCE).
Ashwini, P. and Stephen, S. (2022). “Seismic fragility analysis of structures containing supplemental damping system”, International Journal of Scientific and Research Publications, 12(1), 417-425, https://doi.org/10.29322/IJSRP.12.01.2022.p12156.
Aziminejad, A. and Moghadam, A. (2010). "Fragility-based performance evaluation of asymmetric single-story buildings in near field and far field earthquakes", Journal of Earthquake Engineering, 14(6), 789-816, https://doi.org/10.1080/13632460902837728.
Badri, R.K., Moghadam, A. and Nekooei, M. (2016). "The influence of deterioration parameters on the response of low-rise symmetric and asymmetric RC buildings", International Journal of Civil Engineering, 14(8), 547-560, https://doi.org/10.1007/s40999-016-0038-x.
Bensalah, M.D., Bensaibi, M. and Modaressi, A. (2013). "Assessment of the torsion effect in asymmetric buildings under seismic loading", Applied Mechanics and Materials, 256, 2222-2228, https://doi.org/10.4028/www.scientific.net/AMM.256-259.2222.
Chen, P. and Collins, K.R. (2001). "Some observations on performance-based and reliability-based seismic design of asymmetric building structures", Engineering Structures, 23(8), 1005-1010, https://doi.org/10.1016/S0141-0296(00)00108-5.
Chiou, B., Darragh, R., Gregor, N. and Silva, W. (2008). "NGA project strong-motion database", Earthquake Spectra, 24(1), 23-44,
https://doi.org/10.1193/1.2894831.
Collins, K., Wen, Y.K. and Foutch, D. (1996). "Dual‐level seismic design: a reliability‐based methodology", Earthquake Engineering & Structural Dynamics, 25(12), 1433-1467, https://doi.org/10.1002/(SICI)1096-9845 (199612)25:12<1433::AID-EQE629>3.0.CO;2-M.
Das, P.K., Dutta, S.C. and Datta, T.K. (2021). "Seismic behavior of plan and vertically irregular structures: State of art and future challenges", Natural Hazards Review, 22(2), 04020062, https://doi.org/10.1061/(ASCE)NH.1527-6996.0000440.
DeBock, D.J., Liel, A.B., Haselton, C.B., Hooper, J.D. and Henige, R.A. Jr. (2014). "Importance of seismic design accidental torsion requirements for building collapse capacity", Earthquake Engineering & Structural Dynamics, 43(6), 831-850, https://doi.org/10.1002/eqe.2375.
Dehghani, E. and Soltanimohajer, M. (2022). “Development of the fragility curves for conventional reinforced concrete moment resistant frame structures in Qods Town, Qom City, Iran”, Civil Engineering Infrastructures Journal, 55(1), 31-41, https://doi.org/10.22059/CEIJ.2021.306156.1690.
De Stefano, M. and Pintucchi, B. (2008). "A review of research on seismic behaviour of irregular building structures since 2002", Bulletin of Earthquake Engineering, 6(2), 285-308, https://doi.org/10.1007/s10518-007-9052-3.
De Stefano, M. and Mariani, V. (2014). "Pushover analysis for plan irregular building structures", Perspectives on European Earthquake Engineering and Seismology, 34, 429-448, https://doi.org/10.1007/978-3-319-07118-3_13.
Eivani, H., Moghadam, A.S., Aziminejad, A. and Nekooei, M. (2018). "Seismic response of plan-asymmetric structures with diaphragm flexibility", Shock and Vibration, 2018, 1-18, https://doi.org/10.1155/2018/4149212
Elghazouli, Y. (2010). "Assessment of European seismic design procedures for steel framed structures", Bulletin of Earthquake Engineering, 8, 65-89, http://doi.org/10.1007/s10518-009-9125-6.
Farahani, D., Behnamfar, F., Sayyadpour, H. and Ghandil, M. (2019). "Seismic impact between adjacent torsionally coupled buildings", Soil Dynamics and Earthquake Engineering, 117, 81-95, https://doi.org/10.1016/j.soildyn.2018.11.015.
Fujii, K. (2014). "Prediction of the largest peak nonlinear seismic response of asymmetric buildings under bi-directional excitation using pushover analyses", Bulletin of Earthquake Engineering, 12(2), 909-938, http://doi.org/10.1007/s10518-013-9557-x.
Ferraioli, M., Lavino, A., Mandara, A. (2014). "Behaviour factor of code-designed steel moment-resisting frames", International Journal of Steel Structures, 14(2), 243-254, http://doi.org/10.1007/s13296-014-2005-1.
Ferraioli, M. (2015). "Case study of seismic performance assessment of irregular RC buildings: hospital structure of Avezzano (L'Aquila, Italy)", Earthquake Engineering and Engineering Vibration, 14(1), 141-156, http://doi.org/10.1007/s11803-015-0012-7.
Gioncu, V. and Mazzolani, F. (2010). Seismic design of steel structures, Taylor & Francis Ltd., https://doi.org/10.1201/b16053.
Habiby, Y.M. (2020). "Collapse analysis of torsional moment frame structures against earthquake", M.Sc. Thesis, Isfahan University of Technology. Han, S.W., O Kim, T., Kim, D.H. and Baek, S.J. (2017). "Seismic collapse performance of special moment steel frames with torsional irregularities", Engineering Structures, 141, 482-494, https://doi.org/10.1016/j.engstruct.2017.03.045.
Hentri, M., Hemsas, M. and Nedjar, D. (2018). "Vulnerability of asymmetric multi-storey buildings in the context of performance-based seismic design", European Journal of Environmental and Civil Engineering, 25, 1-22,
http://doi.org/10.1080/19648189.2018.1548380.
Hwang, S.-H., Mangalathu, S., Shin, J., and Jeon, J.-S. (2021). "Machine learning-based approaches for seismic demand and collapse of ductile reinforced concrete building frames", Journal of Building Engineering, 34, 101905, https://doi.org/10.1016/j.jobe.2020.101905.
Kazemi, F. and Jankowski, R. (2023). "Machine learning-based prediction of seismic limit-state capacity of steel moment-resisting frames considering soil-structure interaction", Computers & Structures, 274, 106886, https://doi.org/10.1016/j.compstruc.2022.106886.
Landolfo, R. (2018). "Seismic design of steel structures: New trends of research and updates of Eurocode 8", Geotechnical, Geological and Earthquake Engineering, 46, 413-438, http://doi.org/10.1007/978-3-319-75741-4_18.
Lignos, D.G. and Krawinkler, H. (2011). "Deterioration modeling of steel components in support of collapse prediction of steel moment frames under earthquake loading", Journal of Structural Engineering, 137(11), 1291-1302, http://doi.org/10.1061/(ASCE)ST.1943-541X.0000376.
Manie, S., Moghadam, A.S. and Ghafory‐Ashtiany, M. (2015). "Collapse behavior evaluation of asymmetric buildings subjected to bi‐directional ground motion", The Structural Design of Tall and Special Buildings, 24(8), 607-628, https://doi.org/10.1002/tal.1202.
Marus̆ić, D. and Fajfar, P. (2005). "On the inelastic seismic response of asymmetric buildings under bi-axial excitation", Earthquake Engineering & Structural Dynamics, 34(8), 943-963, https://doi.org/10.1002/eqe.463.
Mazzolani F.M. and Piluso V. (1996). Theory and design of seismic resistant steel frames, E & FN SPON, an imprint of Chapman & Hall, London, https://doi.org/10.1201/9781482271348.
McKenna, F. (2011). "OpenSees: A framework for earthquake engineering simulation", Computing in Science & Engineering, 13(4), 58-66, https://doi.org/10.1109/MCSE.2011.66.
Moon, D.S., Lee, Y.J. and Lee, S. (2018). “Fragility analysis of space reinforced concrete frame structures with structural irregularity in plan”, Journal of Structural Engineering, ASCE, 144(8), 04018096, https://doi.org/10.1061/(ASCE)ST.1943-541X.0002092.
Moradi, M., Tavakoli, H. and Abdollahzadeh, G.R. (2022). "Collapse probability assessment of a 4-Story RC frame under post-earthquake fire scenario", Civil Engineering Infrastructures Journal, 55(1), 121-137, https://doi.org/10.22059/ceij.2021.313241.1718.
Patel, S.A., Darji, A.R., Parikh, K.B. and Patel, B.R. (2016). “Fragility analysis of high-rise building structure”, Journal of Emerging Technologies and Innovative Research (JETIR), 3(7), 127-133.
Puppio, M.L., Pellegrino, M., Giresini, L. and Sassu, M. (2017). “Effect of material variability and mechanical eccentricity on the seismic vulnerability assessment of reinforced concrete buildings”, Buildings, 7(3), 66, https://doi.org/10.3390/buildings7030066.
Rahnama, M. and Krawinkler, H. (1993). "Effect of soft soils and hysteresis models on seismic design spectra", Report 108(TB), The John A. Blume Earthquake Engineering Center, Stanford University, Stanford, CA.
Razmkhah, M.H., Kouhestanian, H., Shafaei, J., Pahlavan, H. and Shamekhi Amiri, M. (2021). “Probabilistic seismic assessment of moment resisting steel buildings considering soft-story and torsional irregularities”, 34(11), 2476-2493, http://doi.org/10.5829/IJE.2021.34.11B.11.
Seo, J. (2018). “Seismic fragility characteristics of structural populations with irregularities”, International Journal of Computational Methods and Experimental Measurements, 6(5), 944-954,
https://doi.org/10.2495/CMEM-V6-N5-944-954.
Sharifi, N.P. and Sakulich, A.R. (2014). "Effects of eccentricity and order of vibration modes on the inelastic seismic response of 3D steel structures", In: Active and Passive Smart Structures and Integrated Systems, (Vol. 9057, pp. 897-903), SPIE, http://doi.org/10.1117/12.2044345.
Tavakoli, H., Moradi, M., Goodarzi, M. and Najafi, H. (2022). "Outrigger braced system placement effect on seismic collapse probability of tall buildings", Civil Engineering Infrastructures Journal,  20, 736-749, https://doi.org/10.1016/j.jobe.2018.09.019.
Xu, C., Deng, J., Peng, S. and Li, C. (2018). “Seismic fragility analysis of steel reinforced concrete frame structures based on different engineering demand parameters”, Journal of Building Engineering, 20, 736-749, https://doi.org/10.1016/j.jobe.2018.09.019.
Zeng, F., Huang, Y., Zhou, J. and Bu, G. (2022). “Seismic fragility analysis and index evaluation of concrete-filled steel tube column frame-core tube structures”, Journal of Asian Architecture and Building Engineering, 21(6), 2371-2387, https://doi.org/10.1080/13467581.2021.1972001.
Civil Engineering Infrastructures Journal
Volume 56, Issue 2
December 2023
Pages 415-438

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History

  • Receive Date: 16 August 2022
  • Revise Date: 22 December 2022
  • Accept Date: 16 June 2023

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