A Parametric Study on Improved Reduced Beam Section Connections with Post-tensioning to Enhance Seismic Resilience

Document Type : Original Article

Authors

Faculty of Civil and Surveying Engineering, Graduate University of Advanced Technology, Kerman, Iran

Abstract

This study presents novel research on the seismic behavior of self-centering reduced beam section (RBS) connections in steel structures. Unlike traditional moment steel frames that concentrate non-elastic deformations in energy dissipation devices, the innovative self-centering RBS connections utilize post-tensioning techniques to restore the structure to its pre-earthquake condition. By significantly reducing residual deformations, these connections offer a promising alternative for improving seismic resilience. To validate the effectiveness of the post-tensioned (PT) and RBS connections, advanced nonlinear numerical modeling using the Finite Element Method (FEM) in ABAQUS software is employed. This approach allows for a comprehensive investigation, comparing the numerical results with laboratory data. Furthermore, the study goes beyond existing research by incorporating additional high-strength cables into the RBS connections. This novel configuration aims to assess the impact of post-tensioned cables on seismic behavior, adding a new dimension to the understanding of these connections. Through a rigorous parametric study, the research uncovers crucial insights into the seismic performance of the self-centering RBS connections. Notably, the study reveals the significant influence of the initial post-tensioning force on various aspects, including stiffness, maximum moment capacity, and gap-opening behavior of PT connections. The findings demonstrate the potential of increasing the initial post-tensioning force to enhance the energy dissipation capacity and overall performance of the PT connections. Overall, this study presents pioneering research that advances the understanding of self-centering RBS connections and their potential application in steel structures. By emphasizing the novel aspects of the research, it contributes to the body of knowledge in the field and provides valuable insights for improving the seismic resilience of structures.

Keywords

Main Subjects

References

  1. Horton, T.A., Hajirasouliha, I., Davison, B. and Ozdemir, Z., "Accurate prediction of cyclic hysteresis behaviour of rbs connections using deep learning neural networks", Engineering Structures, Vol. 247, (2021), 113156. doi: 10.1016/j.engstruct.2021.113156.
  2. Guan, X., Burton, H. and Moradi, S., "Seismic performance of a self-centering steel moment frame building: From component-level modeling to economic loss assessment", Journal of Constructional Steel Research, Vol. 150, (2018), 129-140. doi: 10.1016/j.jcsr.2018.07.026.
  3. Qian, K., Lan, X., Li, Z., Li, Y. and Fu, F., "Progressive collapse resistance of two-storey seismic configured steel sub-frames using welded connections", Journal of Constructional Steel Research, Vol. 170, (2020), 106117. doi: 10.1016/j.jcsr.2020.106117.
  4. Hu, S., Wang, W., Alam, M.S. and Ke, K., "Life-cycle benefits estimation of self-centering building structures", Engineering Structures, Vol. 284, (2023), 115982. doi: 10.1016/j.engstruct.2023.115982.
  5. Fang, C., Wang, W., Qiu, C., Hu, S., MacRae, G.A. and Eatherton, M.R., "Seismic resilient steel structures: A review of research, practice, challenges and opportunities", Journal of Constructional Steel Research, Vol. 191, (2022), 107172. doi: 10.1016/j.jcsr.2022.107172.
  6. Ricles, J.M., Sause, R., Garlock, M.M. and Zhao, C., "Posttensioned seismic-resistant connections for steel frames", Journal of Structural Engineering, Vol. 127, No. 2, (2001), 113-121. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:2(113)
  7. Li, S., Zhao, T., Alam, M.S., Cheng, Z. and Wang, J.-q., "Probabilistic seismic vulnerability and loss assessment of a seismic resistance bridge system with post-tensioning precast segmental ultra-high performance concrete bridge columns", Engineering Structures, Vol. 225, (2020), 111321. doi: 10.1016/j.engstruct.2020.111321.
  8. Fang, C., Qiu, C., Wang, W. and Alam, M.S., "Self-centering structures against earthquakes: A critical review", Journal of Earthquake Engineering, (2023), 1-36. doi: 10.1080/13632469.2023.2166163.
  9. Garlock, M.E.M., "Design, analysis, and experimental behavior of seismic resistant post-tensioned steel moment resisting frames, Lehigh University, (2003).
  10. Gerami, M., "Multi-stage performance upgrade of steel moment frames by post-tension connections", International Journal of Engineering, Transactions B: Applications, Vol. 34, No. 5, (2021), 1132-1144. doi: 10.5829/ije.2021.34.05b.07.
  11. Hosseinnejad, H., Lotfollahi-Yaghin, M., Hosseinzadeh, Y. and Maleki, A., "Numerical investigation of response of the post-tensioned tapered steel beams with shape memory alloy tendons", International Journal of Engineering, Transactions A: Basics, Vol. 34, No. 4, (2021), 782-792. doi: 10.5829/ije.2021.34.04a.04
  12. Vasdravellis, G., Karavasilis, T.L. and Uy, B., "Large-scale experimental validation of steel posttensioned connections with web hourglass pins", Journal of Structural Engineering, Vol. 139, No. 6, (2013), 1033-1042. doi: 10.1061/(ASCE)ST.1943-541X.0000696.
  13. Maghsoudi, A. and Askari D, Y., "Ultimate unbonded tendon stress in cfrp strengthened post-tensioned indeterminate i-beams cast with hscs", International Journal of Engineering, Transactions C: Aspects,  Vol. 28, No. 3, (2015), 350-359. doi: 10.5829/idosi.ije.2015.28.03c.03.
  14. Doostdar, H., Nemati, M. and Naghi Pour, M., "Experimental study and modeling of reinforced concrete beams strengthened by post-tensioned external reinforcing bars", International Journal of Engineering, Transactions A: Basics, Vol. 23, No. 2, (2010), 127-144.
  15. Moradi, S. and Alam, M.S., "Lateral load–drift response and limit states of posttensioned steel beam-column connections: Parametric study", Journal of Structural Engineering, Vol. 143, No. 7, (2017), 04017044. doi: 10.1061/(ASCE)ST.1943-541X.0001772.
  16. Al Kajbaf, A., Fanaie, N. and Najarkolaie, K.F., "Numerical simulation of failure in steel posttensioned connections under cyclic loading", Engineering Failure Analysis, Vol. 91, (2018), 35-57. doi: 10.1016/j.engfailanal.2018.04.024.
  17. Mazzoni, S., McKenna, F., Scott, M.H. and Fenves, G.L., "The open system for earthquake engineering simulation (opensees) user command-language manual", University of California, Berkeley: Pacific Earthquake Engineering Research Center, Vol. 2006, (2006).
  18. Mazloom, M. and Fallah, N., "Seismic vulnerability assessment of existing rc moment frames using a new stiffness based damage index", International Journal of Engineering, Transactions B: Applications, Vol. 36, No. 5, (2023), 1000-1011. doi: 10.5829/ije.2023.36.05b.16.
  19. Sarvestani, H.A., "Structural evaluation of steel self-centering moment-resisting frames under far-field and near-field earthquakes", Journal of Constructional Steel Research, Vol. 151, (2018), 83-93. doi: 10.1016/j.jcsr.2018.09.013.
  20. Huang, X., Eatherton, M.R. and Zhou, Z., "Initial stiffness of self-centering systems and application to self-centering-beam moment-frames", Engineering Structures, Vol. 203, (2020), 109890. doi: 10.1016/j.engstruct.2019.109890.
  21. Bojorquez, E., Lopez-Barraza, A., Reyes-Salazar, A., Ruiz, S.E., Ruiz-García, J., Formisano, A., Lopez-Almansa, F., Carrillo, J. and Bojorquez, J., "Improving the structural reliability of steel frames using posttensioned connections", Advances in Civil Engineering, Vol. 2019, (2019). doi: 10.1155/2019/8912390.
  22. Sofias, C. and Pachoumis, D., "Assessment of reduced beam section (rbs) moment connections subjected to cyclic loading", Journal of Constructional Steel Research, Vol. 171, (2020), 106151. doi: 10.1016/j.jcsr.2020.106151.
  23. Shen, P.-W., Yang, P., Hong, J.-H., Yang, Y.-M. and Tuo, X.-Y., "Seismic performance of steel frame with a self-centering beam", Journal of Constructional Steel Research, Vol. 175, (2020), 106349. doi: 10.1016/j.jcsr.2020.106349.
  24. Bavandi, M., Moghadam, A.S., Mansoori, M.R. and Aziminejad, A., "Introducing a new seismic efficiency index of post-tensioned self-centering steel moment connections", in Structures, Elsevier. Vol. 33, (2021), 463-483.
  25. Horton, T.A., Hajirasouliha, I., Davison, B., Ozdemir, Z. and Abuzayed, I., "Development of more accurate cyclic hysteretic models to represent rbs connections", Engineering Structures, Vol. 245, (2021), 112899. doi: 10.1016/j.engstruct.2021.112899.
International Journal of Engineering
Volume 36, Issue 10
TRANSACTIONS A: Basics
October 2023
Pages 1857-1867

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