New Form of Base Column Connection in Self-Centering Braced Frames without Post-Tensioned Cable

Document Type : Research Article

Authors

1 Department of Civil Engineering, Faculty of Engineering, Golestan University , Gorgan, Iran

2 Department of Civil Engineering, Faculty of Engineering, Golestan University, Gorgan, Iran

Abstract

Conventional column bases are fundamental components of the steel frame. Their behavior has been proved to have a significant effect on the overall building seismic response. Base connections, flexibility largely affect the period of the building and the lateral displacement of the stories. In this research, a new type of connection at the steel column bases has been proposed. the main purpose of proposing this connection is to decrease residual displacement and minimize repair time and disruption of the building serviceability after a strong earthquake. Therefore, to be able to evaluate and compare the seismic performance of this connection with seismic lateral force resisting systems which have developed recently, a self-centering concentrically braced frame (SC-CBF) has been selected from Hasan’s research and analyzed and validated. Also, the performance of the system with the proposed column base is evaluated using numerical analysis. The results show that in the proposed system, the amount of residual drift in the structure is equal to 2.2×10-14%. Therefore, it can be concluded that the proposed connection satisfies the main purpose of the research well, which is to eliminate residual drifts in the system. they also have higher energy dissipation and stiffness than the SC-CBF system that has been developed so far. While the post-tensioned bars are not used.

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References

[1]  J.E. Grauvilardell, D. Lee, J.F. Hajjar, R.J. Dexter, Synthesis of design, testing and analysis research on steel column base plate connections in high-seismic zones, Structural engineering report no. ST-04-02. Minneapolis (MN): Department of Civil Engineering, University of Minnesota,  (2005).
[2] J. Borzouie, G. Rodgers, G. MacRae, G. Chase, C. Clifton, A. Moghadam, Base connections seismic sustainability and base flexibility effects, in:  Steel Innovations conference, Christchurch, New Zealand, 2013
[3] G. Akbas, Probabilistic earthquake structural damage assessment of steel special CBF and steel self-centering CBF buildings, Lehigh University, 2012.
[4] M.M. Garlock, J.M. Ricles, R. Sause, Experimental studies of full-scale posttensioned steel connections, Journal of Structural Engineering, 131(3) (2005) 438-448.
[5] M.M. Garlock, R. Sause, J.M. Ricles, Behavior and design of posttensioned steel frame systems, Journal of Structural Engineering, 133(3) (2007) 389-399.
[6] C.E. Grigorian, M. Grigorian, Performance control and efficient design of rocking-wall moment frames, Journal of Structural Engineering, 142(2) (2016) 04015139.
[7] M. Grigorian, A.S. Moghadam, M. Kamizi, On repairable earthquake resisting archetypes with a view to resiliency objectives and assisted self‐centering, The Structural Design of Tall and Special Buildings, 28(7) (2019) e1603.
[8] D. Roke, R. Sause, J.M. Ricles, C.-Y. Seo, K.-S. Lee, Self-centering seismic-resistant steel concentrically-braced frames, in:  Proceedings of the 8th US National Conference on Earthquake Engineering, EERI, San Francisco, April, 2006, pp. 18-22.
[9] R. Sause, J.M. Ricles, D. Roke, C.-Y. Seo, K.-S. Lee, Design of self-centering steel concentrically-braced frames, in:  Proceedings from the 4th International Conference on Earthquake Engineering, Taipei, Taiwan, Citeseer, 2006.
[10] D.A. Roke, Damage-free seismic-resistant self-centering concentrically-braced frames, Lehigh University, 2010.
[11] N. Rahgozar, N. Rahgozar, A.S. Moghadam, Probabilistic safety assessment of self-centering steel braced frame, Frontiers of Structural and Civil Engineering, 12(1) (2016) 163-182.
[12] N. Chancellor, G. Akbas, R. Sause, J. Ricles, E. Tahmasebi, A. Joó, Evaluation of performance-based design methodology for steel self-centering braced frame, in:  Behaviour of Steel Structures in Seismic Areas, CRC Press, 2012, pp. 757-764.
[13] N. Chancellor, D. Roke, R. Sause, J. Ricles, N. Gonner, Performance of Steel Self-Centering Braced Frame System During Intense Earthquake and Aftershock Ground Motions, in:  Proceedings of the 8 th Conference on Urban Earthquake Engineering, Tokyo Institute of Technology, Tokyo, Japan, March, 2011, pp. 7-8.
[14] M. Eatherton, J. Hajjar, G. Deierlein, H. Krawinkler, S. Billington, X. Ma, Controlled rocking of steel-framed buildings with replaceable energy-dissipating fuses, in:  Proceedings of the 14th world conference on earthquake engineering, 2008, pp. 12-17.
[15] N. Gonner, N. Chancellor, R. Sause, J. Ricles, D. Roke, J. Miranda, Design, Experimental Setup, and Testing of Self-Centering Steel Concentrically-Braced Frame Test Structure, ATLSS Report,  (2010) 10-06.
[16] N. Chancellor, R. Sause, J. Ricles, Design and validation of steel self-centering concentrically-braced frames, Proceeding of 16th WCEE, (2705) (2017).
[17] F.C. Blebo, D.A. Roke, Seismic-resistant self-centering rocking core system with buckling restrained columns, Engineering Structures, 173 (2018) 372-382.
[18] Q. Huang, M. Dyanati, D.A. Roke, A. Chandra, K. Sett, Economic feasibility study of self-centering concentrically braced frame systems, Journal of Structural Engineering, 144(8) (2018) 04018101.
[19] M. Hasan, Parametric Study and Higher Mode Response Quantification of Steel Self-Centering Concentrically-Braced Frames, University of Akron, 2012.
[20] N.B. Chancellor, Seismic design and performance of self-centering concentrically-braced frames, Lehigh University, 2014.
[21] ASCE, Minimum Design Loads for Buildings and Other Structures, ASCE7-10, American Society of Civil Engineers (ASCE), Reston, VA, 2010.
[22] Y. Urthaler, J. Reddy, A corotational finite element formulation for the analysis of planar beams, Communications in numerical methods in engineering, 21(10) (2005) 553-570.
[23] S. Mazzoni, F. McKenna, M.H. Scott, G.L. Fenves, The open system for earthquake engineering simulation (OpenSEES) user command-language manual,  (2006).
[24] A.T. Council, U.S.F.E.M. Agency, Quantification of building seismic performance factors, US Department of Homeland Security, FEMA, 2009.
Amirkabir Journal of Civil Engineering
Volume 56, Issue 12
2025
Pages 1511-1532

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