Effects of In-Plane Restraint on Progression of Collapse in Flat-Plate Structures
Publication: Journal of Performance of Constructed Facilities
Volume 31, Issue 3
Abstract
This paper presents experimental and numerical studies of reinforced concrete flat-plate structures. Experiments were performed on six interior slab-column connections without structural integrity reinforcement to examine their punching and postpunching behaviors. The test variables included slab tensile reinforcement ratio and lateral restraint at the slab boundary. The experiments indicated that, under the level of restraint achieved in the tests, the compressive membrane action could enhance the punching resistance by as much as 9.5%. The tests also showed the slab-column connections without continuous compressive bars at the columns had a postpunching loading capacity of about 50% of the failure load, but this residual capacity cannot be maintained under large deformations. It was found that anchoring the slab tensile reinforcement into slab by hooks provided an alternative approach to achieve stable postpunching capacity. The numerical simulations confirmed the effectiveness of a macromodel for flat plates. The analyses also indicated the effects of compressive membrane action on punching resistance is a function of slab in-plane restraint and can significantly increase the resistance of a flat-plate building to progressive collapse.
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Acknowledgments
This research was sponsored by the National Science Foundation under Grant (No. 1100877 and 1100146), which is gratefully acknowledged. The opinions, findings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the sponsor.
References
ABAQUS [Computer software]. Dassault Systèmes, Waltham, MA.
ACI (American Concrete Institute). (1971). “Building code requirements for reinforced concrete.”, Farmington Hills, MI.
ACI (American Concrete Institute). (2014). “Building code requirements for reinforced concrete.”, Farmington Hills, MI.
Alam, A. K. M. J., Amanat, K. M., and Seraj, S. M. (2009). “Experimental investigation of edge restraint on punching shear behavior of RC slabs.” Civ. Struct. Eng., 2(1), 35–46.
Broms, C. E. (2016). “Tangential strain theory for punching failure of flat slabs.” ACI Struct. J., 113(1), 95.
Broms, C. E. (2009). “Design method for imposed rotations of interior slab-column connections.” ACI Struct. J., 106(5), 636–645.
CEN (European Committee for Standardization). (2004). “Design of concrete structures. Part 1-1: General rules and rules for buildings.” Eurocode 2: EN 1992-1-1, Brussels, Belgium.
Criswell, M. E. (1974). “Static and dynamic response of reinforced concrete slab-column connections.” ACI Spec. Publ., 42, 721–746.
DoD (Department of Defense). (2009). “Design of building to resist progressive collapse.”, Washington, DC.
Einpaul, E., Ospina, C., Ruiz, M., and Muttoni, A. (2016). “Punching shear capacity of continuous slabs.” ACI Struct. J., 114(4), 861–872.
Elstner, R. C., and Hognestad, E. (1956). “Shearing strength of reinforced concrete slabs.” Proc. ACI J., 53(1), 29–58.
Habibi, F., Redl, E., Egberts, M., Cook, W., and Mitchell, D. (2012). “Assessment of CSA A23.3 structural integrity requirements for two-way slabs.” Can. J. Civ. Eng., 39(4), 351–361.
Hawkins, N. M., and Mitchell, D. (1979). “Progressive collapse of flat plate structures.” ACI J. Proc., 76(7), 775–808.
Hognestad, E. (1951). “A study of combined bending and axial load in reinforced concrete members.” Univ. of Illinois, Champaign, IL.
Keyvani, L., Sasani, M., and Mirzaei, Y. (2014). “Compressive membrane action in progressive collapse resistance of RC flat plates.” Eng. Struct., 59, 554–564.
Lee, J., and Fenves, G. L. (1998). “Plastic-damage model for cyclic loading of concrete structures.” J. Eng. Mech., 892–900.
Liu, J., Tian, Y., and Orton, S. L. (2015b). “Resistance of flat plate buildings against progressive collapse. II: System response.” J. Struct. Eng., .
Liu, J., Tian, Y., Orton, S. L., and Said, A. M. (2015a). “Resistance of flat plate buildings against progressive collapse. I: Modeling of slab-column connections.” J. Struct. Eng., .
Lubliner, J., Oliver, J., Oller, S., and Oñate, E. (1989). “A plastic-damage model for concrete.” Int. J. Solids Struct., 25(3), 299–326.
Mercan, B., Schultz, A. E., and Stolarski, H. K. (2010). “Finite element modeling of prestressed concrete spandrel beams.” Eng. Struct., 32(9), 2804–2813.
Mirzaei, Y. (2010). “Post-punching behavior of reinforced concrete slabs.” Ph.D. thesis, EPFL, Lausanne, Switzerland.
Mitchell, D., and Cook, W. D. (1984). “Preventing progressive collapse of slab structures.” J. Struct. Eng., 1513–1532.
Muttoni, A. (2008). “Punching shear strength of reinforced concrete slabs without transverse reinforcement.” ACI Struct. J., 105(4), 440–450.
Park, R., and Gamble, W. L. (2000). Reinforced concrete slabs, 2nd Ed., Wiley, New York.
Park, T. W. (2012). “Inspection of collapse cause of Sampoong department store.” Forensic Sci. Int., 217(1–3), 119–126.
Qian, K., and Li, B. (2015). “Load-resisting mechanism to mitigate progressive collapse of flat slab structures.” Mag. Concr. Res., 67(7), 349–363.
Rankin, G. I. B., and Long, A. E. (1987). “Predicting of enhanced punching strength of interior slab-column connections.” Proc. Inst. Civ. Eng., 82(4), 1165–1186.
Salim, W., and Sebastian, W. M. (2003). “Punching shear failure in reinforced concrete slabs with compressive membrane action.” ACI Struct. J., 100(4), 471–479.
Tian, Y., Jirsa, J. O., and Bayrak, O. (2008). “Strength evaluation of interior slab-column connections.” ACI Struct. J., 105(6), 692–700.
Vecchio, F. J., and Tang, K. (1990). “Membrane action in reinforced concrete slabs.” Can. J. Civ. Eng., 17(5), 686–697.
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©2016 American Society of Civil Engineers.
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Received: Mar 30, 2016
Accepted: Sep 20, 2016
Published online: Nov 21, 2016
Discussion open until: Apr 21, 2017
Published in print: Jun 1, 2017
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