Nonlinear Behavior of Precast Concrete Coupling Beams under Lateral Loads
Publication: Journal of Structural Engineering
Volume 133, Issue 11
Abstract
This paper presents an analytical investigation of the nonlinear behavior of precast concrete coupling beams under monotonic lateral loading. In contrast to conventional monolithic concrete coupling beams, coupling of reinforced concrete wall piers in the proposed system is achieved by posttensioning the beams and the walls together at the floor and roof levels. Under lateral loads, the nonlinear deformations of the coupling beams occur primarily due to the opening of gaps at the beam-to-wall interfaces. The new system offers several advantages over monolithic systems, such as simpler detailing for the beams and the wall piers (no need for diagonal reinforcement crossing the beam-to-wall joints), reduced damage to the structure, and an ability to self-center, thus reducing the residual lateral displacements of the building after a large earthquake. Steel top and seat angles are used at the beam ends to yield and provide energy dissipation during the earthquake. The paper investigates the effects of design parameters, such as the amount of posttensioning, beam and wall properties, and top and seat angle properties, on the lateral strength and displacement characteristics of floor-level coupling beam subassemblies. The results are used to determine how the system behavior can be controlled by design. A procedure to estimate the nonlinear lateral load-deformation relationship of the subassemblies is developed.
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Acknowledgments
This research is funded by the National Science Foundation (NSF) under Grant No. NSFNSF/CMMI 04-09114 and by the Precast/Prestressed Concrete Institute (PCI) under a Daniel P. Jenny Fellowship. The support of the NSF Program Director Dr. P. N. Balaguru and members of the PCI Research and Development Committee is gratefully acknowledged. The writers also acknowledge the technical assistance provided by Cary Kopczynski of Cary Kopczynski and Company, Inc. The findings and conclusions expressed in the paper are those of the writers and do not necessarily reflect the views of the organizations and individuals acknowledged above.NSF
References
Cheok, G., and Lew, H. (1993). “Model precast concrete beam-to-column joints subject to cyclic loading.” PCI J., 38(4), 80–92.
Christopoulos, C., Filiatrault, A., Uang, C.-M., and Folz, B. (2002). “Posttensioned energy dissipating connections for moment-resisting steel frames.” J. Struct. Eng., 128(9), 1111–1120.
El-Sheikh, M., Sause, R., Pessiki, S., and Lu, L.-W. (1999). “Seismic behavior and design of unbonded post-tensioned precast concrete frames.” PCI J., 44(3), 54–71.
Harries, K. (2001). “Ductility and deformability of coupling beams in reinforced concrete coupled walls.” Earthquake Spectra, 17(3), 457–478.
Harries, K., Gong, B., and Shahrooz, B. (2000). “Behavior and design of reinforced concrete, steel, and steel-concrete coupling beams.” Earthquake Spectra, 16(4), 775–799.
Hibbitt, Karlsson & Sorensen, Inc. (2002). ABAQUS user’s manual, version 6.3.
Kurama, Y. C., and Shen, Q. (2004). “Posttensioned hybrid coupled walls under lateral loads.” J. Struct. Eng., 130(2), 297–309.
Kurama, Y. C., Weldon, B. D., and Shen, Q. (2006). “Experimental evaluation of posttensioned hybrid coupled wall subassemblages.” J. Struct. Eng., 132(7), 1017–1029.
Mander, J. B., Priestley, M. J. N., and Park, R. (1988). “Theoretical stress-strain model for confined concrete.” J. Struct. Eng., 114(8), 1804–1826.
Morgen, B., and Kurama, Y. (2004). “A friction damper for posttensioned precast concrete moment frames.” PCI J., 49(4), 112–133.
Prakash, V., Powell, G., and Campbell, S. (1993). “DRAIN-2DX base program description and user guide; Version 1.10.” Rep. No. UCB/SEMM-93/17, Univ. of California, Berkeley, Calif.
Priestley, M., Sritharan, S., Conley, J., and Pampanin, S. (1999). “Preliminary results and conclusions from the PRESSS five-story precast concrete test building.” PCI J., 44(6), 42–67.
Ricles, J. M., Sause, R., Peng, S. W., and Lu, L. W. (2002). “Experimental evaluation of earthquake resistant posttensioned steel connections.” J. Struct. Eng., 128(7), 850–859.
Shen, Q., and Kurama, Y. C. (2002). “Nonlinear behavior of posttensioned hybrid coupled wall subassemblages.” J. Struct. Eng., 128(10), 1290–1300.
Shen, Q., Kurama, Y. C., and Weldon, B. D. (2006). “Seismic design and analytical modeling of posttensioned hybrid coupled wall subassemblages.” J. Struct. Eng., 132(7), 1030–1040.
Sims, J. (2000). “Flange angle behavior in semirigid connections for steel PR frames.” MS thesis, Univ. of Notre Dame, Notre Dame, Ind.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 133 • Issue 11 • November 2007
Pages: 1571 - 1581
Copyright
© 2007 ASCE.
History
Received: Feb 8, 2006
Accepted: Mar 27, 2007
Published online: Nov 1, 2007
Published in print: Nov 2007
Notes
Note. Associate Editor: Sashi K. Kunnath
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