Tendon Model for Nonlinear Analysis of Externally Prestressed Concrete Structures
Publication: Journal of Structural Engineering
Volume 129, Issue 1
Abstract
The present study describes a nonlinear analysis model developed for externally prestressed structures. This model is capable of simulating the slip of the tendon on the deviator and the friction at the interface of the tendon and deviator. Combing the model with concrete and reinforcing steel models, a computer program for material and geometric nonlinear analysis of externally prestressed concrete structures, based on the incremental load method, is developed. The numerical procedure can predict the responses of externally prestressed concrete structures throughout their prestressing transfer and service load history, such as elastic and plastic deformation, cracking, and damage patterns. Two examples are analyzed to verify its capability and efficiency. Analytical and experimental results show good agreement with each other. The comparison of the geometric linear and nonlinear analytical results demonstrates that the second-order effects, associated with the progressive change in eccentricity of the tendons with the increase of member deformation, can be reduced effectively by setting deviators. The second-order effects are negligible when the deviator or deviators are set.
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References
Alkhairi, F. M., and Naaman, A. E.(1993). “Analysis of beams prestressed with unbonded internal or external tendons.” J. Struct. Eng., 119(9), 2680–2700.
Bittnar, Z., and Sejnoha, J. (1996). Numerical methods in structural mechanics, ASCE, New York.
Dall’Asta, A., and Dezi, L.(1998). “Nonlinear behavior of externally prestressed composite beams: Analytical model.” J. Struct. Eng., 124(5), 588–597.
Darwin, D., and Pecknold, D. A.(1976). “Analysis of RC shear panels under cyclic loading.” J. Struct. Div., ASCE, 102(2), 355–369.
Harajli, M. H.(1993). “Strengthening of concrete beams by external prestressing.” PCI J., 38(6), 76–88.
Harajli, M., Khairallah, N., and Nassif, H.(1999). “Externally prestressed members: Evaluation of second-order effects.” J. Struct. Eng., 125(10), 1151–1161.
Kang, Y. J., and Scordelis, A. C.(1980). “Nonlinear analysis of prestressed concrete frames.” J. Struct. Div., ASCE, 106(2), 445–462.
Kupfer, H. B., and Gerstle, K. H.(1973). “Behavior of concrete under biaxial stresses.” J. Eng. Mech. Div., Am. Soc. Civ. Eng., 99(4), 853–866.
Roca, P., and Mari, A. R.(1993). “Numerical treatment of prestressing tendons in the nonlinear analysis of prestressed concrete structures.” Comput. Struct., 46(5), 905–916.
Tan, K.-H., and Ng, C.-K.(1997). “Effects of deviators and tendon configuration on behavior of externally prestressed beams.” ACI Struct. J., 94(1), 13–22.
Wu, X.-H., and Lu, X.-L. (1996). “A constitutive model for nonlinear F.E. analysis of R.C. shear wall under cyclic loading.” Proc., 3rd Asia-Pacific Conf. on Computational Mechanics, Vol. 2, Seoul, Korea, 1477–1482.
Wu, X.-H., Otani, S., and Shiohara, H.(2001). “Tendon model for nonlinear analysis of prestressed concrete structures.” J. Struct. Eng., 127(4), 398–405.
Zienkiewicz, O. C. (1977). The finite element method, 3rd Ed., McGraw-Hill, New York.
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Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 1 • January 2003
Pages: 96 - 104
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Mar 23, 2001
Accepted: Apr 30, 2002
Published online: Dec 13, 2002
Published in print: Jan 2003
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