Effect of Slab Shear Reinforcement on the Performance of the Shear Wall–Floor Slab Connection
Publication: Journal of Performance of Constructed Facilities
Volume 27, Issue 4
Abstract
The floor slabs and shear walls together act as a rigid jointed frame in resisting gravity loads and lateral forces caused by wind and earthquake. The junction between the wall and slab is a key force-resisting element that is subjected to severe stress concentration. The performance of the connection can influence the pattern and distribution of lateral forces among the vertical elements of the structure. In the current study, two different reinforcement detailing adopted, such as (1) conventional joint with the provision of U hooks connecting shear wall and slab and (2) slab bars bent 90° at the core region along with the provision of shear reinforcement in the slab. Analytical investigations were carried out to study the performance of the shear wall–slab connection with these detailings. The RC model consists of a material model to predict the failure of brittle materials, applied to a three-dimensional solid element in which reinforcing bars may be included. Good energy dissipation capacities were observed with the provision of shear reinforcement for an effective width of the slab compared with a conventional joint. The experimental results were compared with analytical results carried out using the finite-element software ANSYS, and it was found that the experimental results are in good agreement with the analytical result.
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Acknowledgments
The authors thank the technical staff of the Laboratories in Structural Engineering Division, Anna University Chennai, for the assistance provided in conducting the experimental studies. The research sponsorship from University Grants Commission, Government of India, under the Major Research Scheme is greatly acknowledged.
References
American Concrete Institute (ACI). (2002). “Building code requirements for structural concrete.” ACI 318-02, Detroit.
ANSYS. (2006). ANSYS user’s manual revision 10, ANSYS, Inc., Canonsburg, PA.
ASCE. (1982). State-of-the-art report on finite element analysis of reinforced concrete, New York.
Broms, C. E. (2007). “Ductility of flat plates: Comparison of shear reinforcement systems.” ACI Struct. J., 104(6), 703–711.
Bureau of Indian Standards. (1989). “Indian standard 43 grade ordinary portland cement: specification.” IS 8112, Bureau of Indian Standards, New Delhi, India.
Bureau of Indian Standards. (1993). “Indian standard ductile detailing of reinforced concrete structures subjected to seismic forces.” IS 13920, Bureau of Indian Standards, New Delhi, India.
Bureau of Indian Standards. (2000). “Indian standard plain and reinforced concrete code of practice.” IS 456, Bureau of Indian Standards, New Delhi, India.
Bureau of Indian Standards. (2002). “Indian standard criteria for earthquake resistant design of structures.” IS 1893, Bureau of Indian Standards, New Delhi, India.
Desai, P., and Krishnan, S. (1964). “Equation for the stress-strain curve of concrete.” ACI Struct. J., 61(22), 345–350.
El-Amoury, T., and Ghobarah, A. (2002). “Seismic rehabilitation of beam-column joint using GFRP sheets.” J. Engrg Struct, 24(11), 1397–1407.
Extended 3D Analysis of Building Systems (ETABS). (2008). ETABS user’s manual, version 9, Computers and Structures, Inc., Berkeley, CA.
Fanning, P. (2001). “Nonlinear models of reinforced and post-tensioned concrete beams.” Electronic J. Struct. Eng, 1(1), 111–119.
Hwang, S. J., Lee, H. L., Ti-Fa, L., Kuo-Chou, W., and Hsin-Hung, T. (2005). “Role of hoops on shear strength of reinforced concrete beam-column joints.” ACI Struct. J., 102(3), 445–453.
Megally, S. H., and Ghali, A. (2000). “Punching shear design of earthquake resistant slab–column connections.” ACI Struct. J., 97(5), 720–730.
Pantazopoulou, S., and Imran, I. (1992). “Slab-wall connections under lateral forces.” ACI Struct. J., 89(5), 515–527.
Park, H.-G., Kwack, J.-H., Jeon, S.-W., Kim, W.-K., and Choi, I.-R. (2007). “Framed steel plate wall behaviour under cyclic lateral loading.” J. Struct. Eng., 133(3), 378–388.
Pillai, S. U., Kirk, W., and Scavuzzo, L. (1982). “Shear reinforcement at slab-column connections in a reinforced concrete flat plate structure.” ACI Struct. J., 79(1), 36–42.
Robertson, I. N., Kawai, T., Lee, J., and Enomoto, B. (2002). “Cyclic testing of slab-column connections with shear reinforcement.” ACI Struct. J., 99(5), 605–613.
Structural Engineers Association of North California (SEAONC). (2005). Seismology and structural standards committee, Seismology Committee Publication, CA.
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© 2013 American Society of Civil Engineers.
History
Received: Jul 21, 2011
Accepted: Dec 15, 2011
Published online: Dec 20, 2011
Published in print: Aug 1, 2013
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