Deformation Analysis of Prestressed Continuous Steel-Concrete Composite Beams
Publication: Journal of Structural Engineering
Volume 135, Issue 11
Abstract
Deformation calculation of prestressed continuous steel-concrete composite beams accounting for the slip effect between the steel and concrete interface under service loads is analyzed. A simplified analytical model is presented. Based on this model, formulas for predicting the cracking region of concrete slab near the interior supports and the increase of the prestressing tendon force are derived. A table for calculating the midspan deflection of two-span prestressed continuous composite beams is also proposed. It is found that the internal force of the prestressing tendon under service loads can be accurately calculated using the proposed formulas. By ignoring the increase of the tendon force, the calculated deflection are overestimated, and considering the increase of the tendon force can significantly improve the accuracy of analytical predictions. As the calculated values show good agreement with the test results, the proposed formulas can be reliably applied to the deformation analysis of prestressed continuous composite beams. Finally, based on the formulas for calculating the deformation of two-span prestressed continuous composite beams, a general method for deformation analysis of prestressed continuous composite beams is proposed.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The writers gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (Grant Nos. NNSFC50438020 and NNSFC50828803), Changjiang Scholars, and Innovative Research Team in University (Grant No. UNSPECIFIEDIRT00736)
References
Albrecht, P., Li, W., and Saadatmanesh, H. (1995). “Fatigue strength of prestressed composite steel-concrete beams.” J. Struct. Eng., 121(12), 1850–1856.
Ayyub, B. M., Sohn, Y. G., and Saadatmanesh, H. (1990). “Prestressed composite girders under positive moment.” J. Struct. Eng., 116(11), 2931–2951.
Ayyub, B. M., Sohn, Y. G., and Saadatmanesh, H. (1992a). “Prestressed composite girders. I: Experimental study for negative moment.” J. Struct. Eng., 118(10), 2743–2762.
Ayyub, B. M., Sohn, Y. G., and Saadatmanesh, H. (1992b). “Prestressed composite girders. II: Analytical study for negative moment.” J. Struct. Eng., 118(10), 2763–2783.
Conti, E., Tardy, R., and Virlogeux, M. (1993). “Friction losses in some externally prestressed bridges in France.” Proc., Workshop on Behavior of External Prestressing in Structures, E. Conti and R. Tardy, eds., Saint-Rémy-lès-Chevreuse, France.
Dall’Asta, A., and Dezi, L. (1998). “Nonlinear behavior of externally prestressed composite beams: Analytical model.” J. Struct. Eng., 124(5), 588–597.
Dall’Asta, A., and Zona, A. (2005). “Finite element model for externally prestressed composite beams with deformable connection.” J. Struct. Eng., 131(5), 706–714.
Dunker, K. F., Klaiber, F. W., and Sanders, W. W. (1986). “Posttensioning distribution in composite bridges.” J. Struct. Eng., 112(11), 2540–2553.
Hoadley, P. G. (1963). “Behavior of prestressed composite steel beams.” J. Struct. Div., 89(3), 21–34.
Klaiber, F. W., Dunker, K. F., and Sanders, W. W. (1982). “Strengthening of single-span steel beam bridges.” J. Struct. Div., 108(12), 2766–2780.
Li, S. J. (2003). “Experimental study on prestressed and prestress reinforced continuous steel-concrete composite beams.” MS thesis, Tsinghua Univ., Beijing.
Nie, J. G., and Cai, C. S. (2003). “Steel-concrete composite beams considering shear slip effects.” J. Struct. Eng., 129(4), 495–506.
Nie, J. G., Cai, C. S., Zhou, T. R., and Li, Y. (2007). “Experimental and analytical study of prestressed steel—Concrete composite beams considering slip effect.” J. Struct. Eng., 133(4), 530–540.
Nie, J. G., Fan, J. S., Cai, C. S. (2004) “Stiffness and deflection of steel-concrete composite beams under negative bending.” J. Struct. Eng., 130(11), 1842–1851.
Saadatmanesh, H. (1986). “Analytical and experimental study of prestressed composite steel-concrete beams.” Ph.D. dissertation, Univ. of Maryland, College Park, Md.
Saadatmanesh, H., Albrecht, P., and Ayyub, B. M. (1989a). “Experimental study of prestressed composite beams.” J. Struct. Eng., 115(9), 2348–2363.
Saadatmanesh, H., Albrecht, P., and Ayyub, B. M. (1989b). “Analytical study of prestressed composite beams.” J. Struct. Eng., 115(9), 2364–2381.
Saadatmanesh, H., Albrecht, P., and Ayyub, B. M. (1989c). “Guidelines for flexural design of prestressed composite beams.” J. Struct. Eng., 115(11), 2944–2961.
Szilard, R. (1959). “Design of prestressed composite steel structures.” J. Struct. Div., 85(9), 97–123.
Troitsky, M. S. (1990). “Prestressed continuous composite girders.” Prestressed steel bridges: Theory and design, Van Nostrand Reinhold, New York, 191–254.
Troitsky, M. S., and Rabbani, N. F. (1987). “Tendon configurations of prestressed steel girder bridges.” Proc., CSCE Centennial Conf., Univ. of New Brunswick, Montreal, 171–182.
Information & Authors
Information
Published In
Copyright
© 2009 ASCE.
History
Received: Aug 10, 2008
Accepted: Apr 20, 2009
Published online: Oct 15, 2009
Published in print: Nov 2009
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.