Evaluation of the seismic performance of tall steel frames with semi-rigid connections with zipper bracing system under near-fault earthquakes

Document Type : Research


1 Graduated student in Structural Engineering, University of Mohaghegh Ardabili, Ardabil, Iran

2 Associate Professor, Department of Civil Engineering, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran

3 Department of Civil Engineering, University of Mohaghegh Ardabili, Ardabil, Iran


In this article, the enhancement of the seismic function in tall buildings with semi-rigid connections accompanied by the Chevron bracing system was studied. Therefore, it is better to improve the seismic performance of such frames to prevent possible damages and failures. For this purpose, modeling Chevron bracing system was first done using Opensees software by adding zipper columns in tall semi-rigid steel frames in two 12-story and 15-story structures as representatives of tall buildings. 56 semi-rigid frames were analyzed under seven near-fault records using dynamic non-linear time history analysis. The analysis of modeled frames was done for both pinned and ductile connections and the case of removing and adding the zipper column. The results showed that the use of zipper columns in Chevron braces in the steel frames with pinned and semi-rigid connections controls both relative story displacement and maximum lateral story displacement, and this effect is more significant in frames with ductile connections. In other words, more ductility capacity and better dissipation of seismic forces in the near-fault areas for semi-rigid frames could lead to desirable seismic performance. The presence of zipper columns in Chevron braces has made an integrated frame performance in the entire height of the structure due to the transmission of unbalanced vertical forces induced in the braced spans while decreasing story displacements. In addition, it has improved the seismic behavior of semi-rigid steel frames.


Main Subjects

[1] Karimi, F. (2010). Seismic behavior of tall frames with semi-rigid connections, International Conference on Light Weight Construction and Earthquake, Kerman Jahad Daneshgahi, Kerman, Iran, pp. 1-9.
[2] Hosseinzadeh, Y., Gholipur feizi, M., & Behravesh, A. (2008). Seismic performance of steel moment-resisting frames with mixed use of rigid and semi-rigid connections, Journal of Tabriz University, Faculty of Engineering, Tabriz, Iran, Vol. 35, No. 3 (Civil Engineering), pp. 38-48.
[3] Khatib, I. F., Mahin, S. A., & Pister, K. S. (1988). Seismic behavior of concentrically braced steel frames. Berkeley, CA, USA, Report No.UCB/EERC-88/01: Earthquake Engineering Research Center, University of California.
[4] Kim, J., Cho, C., Lee, K., & Lee, C. (2008). Design of zipper column in inverted V braced steel frames. Proceedings of the 14th World Conference on Earthquake Engineering, Beijing, China.
[5] Razavi, M., & Sheidaei, M. R. (2013). Comparative study of seismic behavior of frames braced with Zipper and special Chevron bracing systems, Ferdowsi Civil Engineering Quarterly Journal, Mashhad, Iran, Vol. 25, No. 1, pp. 72-59.
[6] Chen, Z. (2012). Seismic response of high-rise zipper braced frame structures with outrigger trusses, Ph.D. diss., Concordia University, Montreal, Quebec, Canada.
[7] Vaseghi Amiri, J., Abdollahzadeh, G. R., & Panahi, S. (2014). Evaluating the use of vertical Zipper members in the eccentrically braced frames using ABAQUS software, 1st National Conference on Development of Civil Engineering, Architecture, Electricity and Mechanical in Iran. Gorgan, Iran.
[8] Ozcelik, Y., Saritas, A., Clayton, PM. (2016). Comparison of chevron and suspended-zipper braced steel frames, Journal of Constructional Steel Research. No. 119, pp. 75-169.
[9] Zahrai, S.M., Pirdavari, M., Farahani, H.M.(2013). Evaluation of hysteretic behavior of eccentrically braced frames with the zipper-strut upgrade. Journal of Constructional Steel Research. No. 83, pp.10-20.
[10] Nodeh Farahani, R., & Mirzagol Tabar, A.R. (2015). Study of reinforcement details of steel frame braced with zipper brace, The International Conference on Human, Architecture, Civil Engineering and City (ICOHACC 2015), Tabriz, Iran.
[11] Ghorbani Asl, A., & Karimi, F. (2018). Seismic performance of tall steel frames with semi-rigid connections under the effects of near-fault accelerogram records, National Conference on Basic Research in Civil Engineering, Architecture and Urban Planning, Tehran, Iran.
[12] Yang, C.-S., Leon, R.T., & DesRoches, R. (2010). Cyclic behavior of zipper-braced frames, Journal of Earthquake Spectra, Vol 27, Issue 2, pp.561-582.
[13] Tirca, L., & Tremblay, R. (2004). Influence of building height and ground motion type on the seismic behavior of zipper concentrically braced steel frames. 13th World Conference on Earthquake Engineering, Paper No. 2894, Vancouver, Canada,
[14] Zandi, N., Adlparvar, M.R., & Lamei Javan, A. (2021). Evaluation on Seismic Performance of Dual Steel Moment-resisting Frame with Zipper Bracing System Compared to Chevron Bracing System against Near-Fault Earthquakes, Journal of Rehabilitation in Civil Engineering, pp. 3-9.
[15] Costanzo, S., D'Aniello, M., & Landolfo, R. (2018). The influence of moment resisting beam-to-column connections on seismic behavior of chevron concentrically braced frames. Soil Dynamics and Earthquake Engineering, 113, 136-147.
[16] Narayan, & Pathak, K. K. (2022). Numerical Analysis of Multilevel Eccentric Chevron Braced Frame for Improved Inelastic Behavior. Practice Periodical on Structural Design and Construction, 27(1), 04021066.
[17] Comeau, C., Cano, P., Imanpour, A., & Tremblay, R. (2022, May). Seismic Behaviour and Design of Chevron Multiā€tiered Concentrically Braced Frames. In Proceedings of the 10th International Conference on Behaviour of Steel Structures in Seismic Areas: STESSA 2022 (pp. 379-387). Cham: Springer International Publishing.
[18] Li, H., Zhang, W., & Zeng, L. (2023, March). Seismic assessment of chevron braced frames with differently designed beams. In Structures (Vol. 49, pp. 1028-1043). Elsevier.
[19] Zheng, L., Dou, S., Zhang, C., Wang, W., Ge, H., Ma, L., & Gao, Y. (2023). Seismic performance of different chevron braced frames. Journal of Constructional Steel Research, 200, 107680.
[20] Dubina, D., Stratan, A., & Dinu, F. (1998). Suitability of Semi-Rigid Joint Steel Building Frames in Seismic Areas, in Proceedings of European Conference on Earthquake Engineering, Balkema, Rotterdam, Netherlands.
[21] Gioncu, V., & Petcu, D. (1997). Available rotation capacity of wide-flange beams and beam-columns Part 1. Theoretical approaches, Journal of Constructional Steel Research, Vol. 43, pp. 161-217.
[22] Menegotto, M., Pinto, P.E. (1973). Method of analysis for cyclically loaded R.C. plane frames including changes in geometry and non-elastic behavior of elements under combined normal force and bending. Proc. of IABSE Symposium on Resistance and Ultimate Deformability of structures Acted on by Well Defined Repeated Loads, Vol.13, pp. 75-101.
[23] Iranian Code of Practice for Seismic Resistant Design of Buildings (Standard No.2800), (2015). Building and Housing Research Center (BHRC) Press, 4th Edition.