Effects of Steel Braces on Robustness of Steel Frames against Progressive Collapse
Publication: Journal of Structural Engineering
Volume 147, Issue 11
Abstract
External installation of steel braces is an effective approach to increase the lateral load resistance of steel moment-resisting frames. However, the effects of existence of steel braces on the robustness of steel moment-resisting frames to resist progressive collapse is still not clear because little study has been carried out. To fill this gap, in this paper, six multistory steel moment-resisting subframes (three bare frames and three braced frames) were fabricated and tested. Test results indicated that the specimen with reduced beam section in the connection zone performed best among three types of connections due to the guaranteed formation of plastic hinges at the location of reduced section and avoiding brittle fracture of weld at the connection. Experimental results proved that steel braces could increase the load-resisting capacity by 45.1% and 83.9% of the frame with weld connection and end plate connection, respectively. The gusset plate restricted the rotation of the plastic hinges in the second story of the braced frames with V-shaped bracing, which decreased its deformation capacity and degraded its catenary action capacity. Actually, the ultimate load of the braced frames with V-shaped bracing is only 87.5% of that of the counterpart without any braces. Because the compressive braces were severely buckled before the displacement reached 0.4% of the beam span, it had little effect on yield load but increased the initial stiffness of the bare frames. Thus, a majority of the benefits of the bracing system were attributed to the tensile braces. Moreover, the analytical results evaluated the differences in load resistance and development of load-resisting mechanisms in different stories. Furthermore, the contribution of compressive and tensile braces was decomposed individually by analytical analysis.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was supported by a research grant provided by the National Natural Science Foundation of China (Nos. 52022024, 51778153). Any opinions, findings, and conclusions expressed in this paper are those of the authors and do not necessarily reflect the view of National Natural Science Foundation of China.
References
AISC. 2005a. Seismic provisions for structural steel buildings. ANSI/AISC 341-05. Chicago: AISC.
AISC. 2005b. Specification for structural steel buildings. ANSI/AISC 360-05. Chicago: AISC.
Alashker, Y., H. Li, and S. El-Tawil. 2011. “Approximations in progressive collapse modeling.” J. Struct. Eng. 137 (9): 914–924. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000452.
Chen, J., W. Peng, R. Ma, and M. He. 2012. “Strengthening of horizontal bracing on progressive collapse resistance of multistory steel moment frame.” J. Perform. Constr. Facil. 26 (5): 720–724. https://doi.org/10.1061/(ASCE)CF.1943-5509.0000261.
Christopoulos, C., A. Filiatrault, C.-M. Uang, and B. Folz. 2002. “Posttensioned energy dissipating connections for moment-resisting steel frames.” J. Struct. Eng. 128 (9): 1111–1120. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:9(1111).
Deng, X.-F., S.-L. Liang, F. Fu, and K. Qian. 2020. “Effects of high-strength concrete on progressive collapse resistance of reinforced concrete frame.” J. Struct. Eng. 146 (6): 04020078. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002628.
Dimopoulos, C. A., F. Freddi, T. L. Karavasilis, and G. Vasdravellis. 2020. “Progressive collapse resistance of steel self-centering MRFs including the effects of the composite floor.” Eng. Struct. 208 (Apr): 109923. https://doi.org/10.1016/j.engstruct.2019.109923.
Dinu, F., I. Marginean, and D. Dubina. 2017. “Experimental testing and numerical modelling of steel moment-frame connections under column loss.” Eng. Struct. 151 (Nov): 861–878. https://doi.org/10.1016/j.engstruct.2017.08.068.
Dinu, F., I. Marginean, D. Dubina, and I. Petran. 2016. “Experimental testing and numerical analysis of 3D steel frame system under column loss.” Eng. Struct. 113 (Apr): 59–70. https://doi.org/10.1016/j.engstruct.2016.01.022.
DoD (US Dept. of Defense). 2010. Design of buildings to resist progressive collapse. UFC 4-023-03. Washington, DC: DoD.
Galal, K., and T. El-Sawy. 2010. “Effect of retrofit strategies on mitigating progressive collapse of steel frame structures.” J. Constr. Steel Res. 66 (4): 520–531. https://doi.org/10.1016/j.jcsr.2009.12.003.
Garlock, M. M., J. M. Ricles, and R. Sause. 2005. “Experimental studies of full-scale posttensioned steel connections.” J. Struct. Eng. 131 (3): 438–448. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:3(438).
GSA (US General Services Administration). 2013. Progressive collapse analysis and design guidelines for new federal office buildings and major modernization projects. Washington, DC: GSA.
Khandelwal, K., and S. El-Tawil. 2007. “Collapse behavior of steel special moment resisting frame connections.” J. Struct. Eng. 133 (5): 646–655. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:5(646).
Khandelwal, K., and S. El-Tawil. 2011. “Pushdown resistance as a measure of robustness in progressive collapse analysis.” Eng. Struct. 33 (9): 2653–2661. https://doi.org/10.1016/j.engstruct.2011.05.013.
Khandelwal, K., S. El-Tawil, and F. Sadek. 2009. “Progressive collapse analysis of seismically designed steel braced frames.” J. Constr. Steel Res. 65 (3): 699–708. https://doi.org/10.1016/j.jcsr.2008.02.007.
Lee, C.-H., S. Kim, and K. Lee. 2010. “Parallel axial-flexural hinge model for nonlinear dynamic progressive collapse analysis of welded steel moment frames.” J. Struct. Eng. 136 (2): 165–173. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000102.
Lew, H. S., J. A. Main, S. D. Robert, F. Sadek, and V. P. Chiarito. 2013. “Performance of steel moment connections under a column removal scenario. I: Experiments.” J. Struct. Eng. 139 (1): 98–107. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000618.
Li, L., W. Wang, Y. Y. Chen, and L. H. Teh. 2017. “Column-wall failure mode of steel moment connection with inner diaphragm and catenary mechanism.” Eng. Struct. 131 (Jan): 553–563. https://doi.org/10.1016/j.engstruct.2016.10.032.
Liu, C., K. H. Tan, and T. C. Fung. 2015. “Investigations of nonlinear dynamic performance of top-and-seat with web angle connections subjected to sudden column removal.” Eng. Struct. 99 (Sep): 449–461. https://doi.org/10.1016/j.engstruct.2015.05.010.
Moradi, S., and M. S. Alam. 2017. “Lateral load–drift response and limit states of posttensioned steel beam-column connections: Parametric study.” J. Struct. Eng. 143 (7): 04017044. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001772.
Pantidis, P., and S. Gerasimidis. 2017. “New Euler-type progressive collapse curves for steel moment-resisting frames: Analytical method.” J. Struct. Eng. 143 (9): 04017113. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001834.
Pantidis, P., and S. Gerasimidis. 2018. “Progressive collapse of 3D steel composite buildings under interior gravity column loss.” J. Constr. Steel Res. 150 (Nov): 60–75. https://doi.org/10.1016/j.jcsr.2018.08.003.
Pirmoz, A., and M. M. Liu. 2016. “Finite element modeling and capacity analysis of post-tensioned steel frames against progressive collapse.” Eng. Struct. 126 (Nov): 446–456. https://doi.org/10.1016/j.engstruct.2016.08.005.
Qian, K., X. Lan, Z. Li, and F. Fu. 2021a. “Behavior of steel moment frames using top-and-seat angle connections under various column removal scenarios.” J. Struct. Eng. 147 (10): 04021144.
Qian, K., X. Lan, Z. Li, Y. Li, and F. Fu. 2020. “Progressive collapse resistance of two-storey seismic configured steel sub-frames using welded connections.” J. Constr. Steel Res. 170 (Jul): 106117. https://doi.org/10.1016/j.jcsr.2020.106117.
Qian, K., S.-L. Liang, F. Fu, and Y. Li. 2021b. “Progressive collapse resistance of emulative precast concrete frames with various reinforcing details.” J. Struct. Eng. 147 (8): 04021107. https://doi.org/10.1061/(ASCE)ST.1943-541X.0003065.
Richard, R. M. 1986. “Analysis of large bracing connection designs for heavy construction.” In Proc., National Steel Construction Conf., 1–24. Chicago: AISC.
Ricles, J. M., R. Sause, M. M. Garlock, and C. Zhao. 2001. “Posttensioned seismic-resistant connections for steel frames.” J. Struct. Eng. 127 (2): 113–121. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:2(113).
Sadek, F., J. A. Main, H. S. Lew, and Y. Bao. 2011. “Testing and analysis of steel and concrete beam-column assemblies under a column removal scenario.” J. Struct. Eng. 137 (9): 881–892. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000422.
Sadek, F., J. A. Main, H. S. Lew, and S. El-Tawil. 2013. “Performance of steel moment connections under a column removal scenario. II: Analysis.” J. Struct. Eng. 139 (1): 108–119. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000617.
Tang, H. Y., X. Z. Deng, Y. G. Jia, J. G. Xiong, and C. M. Peng. 2019. “Study on the progressive collapse behavior of fully bolted RCS beam-to-column connections.” Eng. Struct. 199 (Nov): 109618. https://doi.org/10.1016/j.engstruct.2019.109618.
Wang, H., K. H. Tan, and B. Yang. 2020. “Experimental tests of steel frames with different beam–column connections under falling debris impact.” J. Struct. Eng. 146 (1): 04019183. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002469.
Weng, Y. H., K. Qian, F. Fu, and Q. Fang. 2020. “Numerical investigation on load redistribution capacity of flat slab substructures to resist progressive collapse.” J. Build. Eng. 29 (May): 101109. https://doi.org/10.1016/j.jobe.2019.101109.
Yang, B., and K. H. Tan. 2013a. “Experimental tests of different types of bolted steel beam-column joints under a central-column-removal scenario.” Eng. Struct. 54 (Sep): 112–130. https://doi.org/10.1016/j.engstruct.2013.03.037.
Yang, B., and K. H. Tan. 2013b. “Robustness of bolted-angle connections against progressive collapse: Experimental tests of beam-column joints and development of component-based models.” J. Struct. Eng. 139 (9): 1498–1514. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000749.
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Received: Mar 20, 2021
Accepted: Jun 22, 2021
Published online: Aug 28, 2021
Published in print: Nov 1, 2021
Discussion open until: Jan 28, 2022
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