Performance Evaluation of Welded Moment Frame with Reduced Beam Section and Stiffener

مهندسی عمران فردوسی

Article 3, Volume 36, Issue 3 - Serial Number 43, September 2023, Pages 29-46   

Document Type: Original Article

DOI: 10.22067/jfcei.2023.82042.1224

Authors

Mohammad-Amin Jalali; Amin Rafiee^*

Department of Civil Engineering, University of Maragheh, Maragheh, Iran

Abstract

In this research, the effect of the elliptical web reduction, the effect of the radial flange reduction and also the effect of the use of stiffener, on the behavior of beam, on the behavior of connection and on the performance of steel moment frame is studied. By using Finite-Elements Method and 3D elements in ABAQUS, the nonlinear-static analyses of the frame under cyclic loading are carried out and the Von-Mises criterion is checked. The results show that in the beam with no reductions, maximum stresses and strains occur in the web. By reducing the web section of the beam, maximum stresses and strains are transferred to the location of the reduced section. The ratio of maximum strength to the strength at the final step of loading, and also, the value of dissipated energy, show that, in comparison with the connections with radial-shaped reductions, the connections with elliptical-shaped reductions have less strength degradation and more ductility.

Keywords

Reduced beam section; Stiffener; Cyclic loading; Nonlinear finite-elements method

References

[1] Jones SL, Fry GT, Engelhardt MD. Experimental evaluation of cyclically loaded reduced beam section moment connections. Journal of Structural Engineering. vol. 128, no. 4. Pp.441-51, 2002.

 [2] Bertero VV. Performance of steel building structure during the Northridge earthquake. Report No. UCB/EERC-94/09. 1994.

[3] S. J. Chen, C. H. Yeh, J. M. Chu, “Ductile steel beam-tocolumn connections for seismic resistance,” Journal of Structural Engineering, vol. 122, no. 11, pp. 1292–1299, 1996. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:11(1292)

[4] S. L. Jones, G. T. Fry, M. D. Engelhardt, “Experimental Evaluation of Cyclically Loaded Reduced Beam Section Moment Connections,” Journal of Structural Engineering, vol. 128, no. 4, pp. 948-953, 2002. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:4(441)

[5] Zhang X, Ricles JM. “Experimental evaluation of reduced beam section connections to deep columns”. Journal of Structural Engineering. vol. 132, no.3, pp346-57. 2006;

[6] S. Kumar, and D. Rao, “RHS beam-to-column connection with web opening—experimental study and finite element modeling,” Journal of Constructional Steel Research, vol. 62, no. 8, pp. 739–46, 2005. https://doi.org/10.1016/j.jcsr.2005.11.016

[7] SAC Joint Venture. Guidelines Development Committee, SAC Joint Venture, Structural Engineers Association of California, Applied Technology Council, California Universities for Research in Earthquake Engineering. Recommended Seismic Evaluation and Upgrade Criteria for Existing Welded Steel Moment-frame Buildings. Federal Emergency Management Agency; 2000.

[8] D. T. Pachoumis, E. G. Galoussis, C. N. Kalfas, and I. Z. Efthimiou, “Cyclic performance of steel moment-resisting connections with reduced beam sections experimental analysis and finite element model simulation,” Engineering Structures, vol. 32, no. 9, pp. 2683-2692, 2010. https://doi.org/10.1016/j.engstruct.2010.04.038

[9] C. E. Sofias, C. N. Kalfas, and D. T. Pachoumis, “Experimental and FEM analysis of reduced beam section moment end plate connections under cyclic loading,” Engineering Structures, vol. 59, pp. 320-329, 2014. https://doi.org/10.1016/j.engstruct.2013.11.010

‏[10] Code P. Eurocode 8: Design of structures for earthquake resistance—Part 3: Assessment and retrofitting of buildings. Incorporating Corrigendum March. 2010.

[11] S. El-Tawil, T. Mikesell, E. Vidarsson, S. Kunnath, “Strength and Ductility of FR Welded Bolted Connections,” Report No. SAC/BD-98/01, SAC Joint Venture, Sacramento, CA, 1998.

[12] ANSI/AISC 358-16. Prequalified connections for special and intermediate steel moment frames for seismic applications.

[13] M. Davarpanah, H. R. Ronagh, P. Memarzadeh, and F. Behnamfar, “Cyclic behaviour of elliptical-shaped reduced web section connection,” Journal of Structural Design, vol. 24, pp. 955–973, 2020. https://doi.org/10.1016/j.istruc.2020.02.016

[14] M. Davarpanah, H. Ronagh, P. Memarzadeh, and F. Behnamfar, “Cyclic behavior of welded elliptical-shaped RWS moment frame,” Journal of Constructional Steel Research, vol. 175, pp. 106319, 2020. https://doi.org/10.1016/j.jcsr.2020.106319

[15] H. R. Nazaralizadeh, H. Ronagh, P. Memarzadeh, and F. Behnamfar, “Cyclic performance of bolted end-plate RWS connection with vertical-slits,” Journal of Constructional Steel Research, vol. 173, pp. 106236, 2020. https://doi.org/10.1016/j.jcsr.2020.106236

[16] D. D. Yan, B. L. Zhou, X. Guo, F. Lai, X. Wei, Y. P. Xu, and M. Esfandi-Jahanian, “Investigation of behavior of interior steel connections with openings in beam web and flange under monotonic loading,” Advanced Steel Construction, vol. 17, no. 4, pp. 340-348, 2021. https://doi.org/10.18057/IJASC.2021.17.4.2

[17] H. R. Nazaralizadeh, H. Ronagh, P. Memarzadeh, and F. Behnamfar, “A practical design approach to bolted end-plate vertical-slits RWS connection,” Bulletin of Earthquake Engineering, vol. 20, pp. 547-586, 2022. https://doi.org/10.1007/s10518-021-01238-2

[18] K. D. Tsavdaridis, C. K. Lau, and A. Alonso-Rodríguez, “Experimental behaviour of non-seismical RWS connections with perforated beams under cyclic actions,” Journal of Constructional Steel Research, vol. 183, pp. 106756, 2021. https://doi.org/10.1016/j.jcsr.2021.106756

[19] F. F. Almutairi, K. D. Tsavdaridis, A. Alonso Rodriguez, P. G. Asteris, and M. E. Lemonis, “Hysteretic Behaviour of Composite Reduced Web Section (RWS) Connections for Seismic Applications,” Journal of Earthquake Engineering, 2023. https://doi.org/10.1080/13632469.2023.2204172

[20] H. Y. Chang, C. T. Liao, S. Y. Kang, S. Y. Ho, and C. M. Lai, “Seismic performance of RWS moment connections to steel box-columns and H-beams with general sections,” Journal of Constructional Steel Research, vol. 201, pp. 107691, 2023. https://doi.org/10.1016/j.jcsr.2022.107691

[21] H. Yu, and W. Li, “Comparison of steel frames with RWS and WFP beam-to-column connections through seismic fragility analysis,” Advances in Structural Engineering, vol. 24, no. 8, pp. 1583-1598, 2021. https://doi.org/10.1177/1369433220977284

[22] I. Kanao, T. He, Z. Yu, K. Morisako, “Behavior of RBS Beams Reinforced by Stiffeners Subjected to Cyclic Loading,” Journal of Engineering, vol. 2018, 2018. https://doi.org/10.1155/2018/6173873

[23] M. Tahamouli-Roudsari, H. Jamshidi, and M. M. Zangeneh, “Experimental and numerical investigation of IPE reduced beam sections with diagonal web stiffeners,” Journal of Earthquake Engineering, vol. 22, no. 4, pp. 533-552, 2018. https://doi.org/10.1080/13632469.2016.1234422

[24] American Institute of Steel Construction. Seismic provisions for structural steel buildings. American Institute of Steel Construction; 2002.