Abstract
Progressive collapse, usually caused by accidental or abnormal loading, is a structural failure disproportionate to its original cause. Reinforced concrete (RC) flat plate structures are vulnerable to brittle punching shear failure in the vicinity of slab-column joints, which may initiate disastrous progressive collapse causing significant economic, social, and psychological consequences. This paper presents a series of experimental investigations of twenty-one 1/3-scaled slab-column joint specimens with in-plane restraints, under opposite punching shear directions, and subject to concentric and eccentric loading conditions. Three design parameters (slab thickness, reinforcement ratio, and flexural reinforcement extension) and three strengthening methods (embedded beams, stirrups in punching area, and ring beams) were considered. The load-resisting and deformation capacities of the joints, as well as their punching shear and post-punching failure behaviours were examined in detail. In addition to the experimental studies, numerical modelling techniques were also developed to simulate the physical tests with emphasis on their load-displacement responses, punching shear and post-punching capacities and crack development. Results demonstrate that (1) the punching shear capacity is mainly governed by the geometrical dimensions of the slab; (2) the post-punching strength is primarily regulated by the integrity rebars going through the column. The continuous integrity rebars are imperative for activating tensile membrane action thereby enhancing post-punching capacity in progressive collapse events.
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References
Lu, X.Z., et al.: A preliminary analysis and discussion of the condominium building collapse in Surfside, Florida, US, June 24. Front. Struct. Civ. Eng. 15(5), 1097–1110 (2021)
Euro Weekly: WATCH: Dramatic images of collapsed car park in Spain. https://www.euroweeklynews.com/2020/01/13/watch-dramatic-images-of-collapsed-car-park-in-spain/. Accessed 25 Jan 2021
ABCNews: Chinese underground construction site collapses, killing 8. https://abcnews.go.com/International/wireStory/chinese-underground-construction-site-collapses-killing-66606520. Accessed 25 Jan 2021
Melo, G.S., Regan, P.E.: Post-punching resistance of connections between flat slabs and interior columns. Mag. Concr. Res. 50(4), 319–327 (1998)
Habibi, F.: Post-Punching Shear Response of Two-Way Slabs, Ph.D Thesis, McGill University (2012)
Ruiz, M.F., Mirzaei, Y., Muttoni, A.: Post-punching behavior of flat slabs. ACI Struct. J. 110, 801–812 (2013)
Peng, Z., Orton, S.L., Liu, J., Tian, Y.: Effects of in-Plane Restraint on Progression of Collapse in Flat-Plate Structures, Ph.D Thesis (2015)
Hawkins, N.M., Mitchell, D.: Progressive collapse of flat plate structures. J. Proc. 76, 775–808 (1979)
Regan, P.E., Walker, P.R., Zakaria, K.A.A.: Tests of Reinforced Concrete Flat Slabs. CIRIA Project RP, 220 (1979)
Mitchell, D., Cook, W.D.: Preventing progressive collapse of slab structures. J. Struct. Eng. 110(7), 1513–1532 (1984)
Keyvani, L., Sasani, M., Mirzaei, Y.: Compressive membrane action in progressive collapse resistance of RC flat plates. Eng. Struct. 59, 554–564 (2014)
Ruiz, M.F., Muttoni, A., Kunz, J.: Strengthening of flat slabs against punching shear using post-installed shear reinforcement. ACI Struct. J. 107(4), 434–442 (2010)
Carvalho, A.L., Melo, G.S., Gomes, R.B., Regan, P.E.: Punching shear in post-tensioned flat slabs with stud rail shear reinforcement. ACI Struct. J. 108(5), 523–531 (2011)
Elgabry, A.A., Ghali, A.: Moment transfer by shear in slab-column connections. ACI Struct. J. 93, 187–196 (1996)
Kruger, G., Burdet, O., Favre, R.: Punching strength of RC flat slabs with moment transfer. In: International Workshop on Punching Shear, Royal Institute of Technology, TRITA-BKN Bulletin 57, Stockholm (2000)
Binici, B., Bayrak, O.: Upgrading of slab–column connections using fiber reinforced polymers. Eng. Struct. 27(1), 97–107 (2005)
Diao, M.Z., Li, Y., Lu, X.Z., Guan, H., Liu, F.F.: Post-punching mechanism of slab-column joints subjected upward and downward punching shear actions. In: Structures Conference 2018, Apr 19–21, Fort Worth, Texas, USA, pp. 246–254 (2018)
Yang, Y.Z., Diao, M.Z., Li, Y., Guan, H., Lu, X.Z.: Experimental investigation on post-punching mechanism of slab-column joints. In: 15th International Symposium on Structural Engineering (ISSE-15), Oct 24–27, Hangzhou, China (2018)
Acknowledgements
The authors are grateful for the financial support received from the Australian Research Council through an ARC Discovery Project (DP150100606), the National Key Research and Development Program of China (No. 2019YFC1511000), and the National Natural Science Foundation of China (No. 52178094).
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Diao, M., Guan, H., Xue, H., Li, Y., Lu, X. (2023). Load-Resistant Mechanism and Failure Behaviour of RC Flat Plate Slab-Column Joints Under Concentric and Eccentric Loading. In: Geng, G., Qian, X., Poh, L.H., Pang, S.D. (eds) Proceedings of The 17th East Asian-Pacific Conference on Structural Engineering and Construction, 2022. Lecture Notes in Civil Engineering, vol 302. Springer, Singapore. https://doi.org/10.1007/978-981-19-7331-4_76
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DOI: https://doi.org/10.1007/978-981-19-7331-4_76
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