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Bending Stiffness of Truss-Reinforced Steel-Concrete Composite Beams

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50177#.VDSrEVfHRK0

This paper is concerned with a special steel-concrete composite beam in which the resisting system is a truss structure whose bottom chord is made of a steel plate supporting the precast floor system. This system works in two distinct phases with two different resisting mechanisms: during the construction phase, the truss structure bears the precast floor system and the resisting system is that of a simply supported steel truss; once the concrete has hardened, the truss structure becomes the reinforcing element of a steel-concrete composite beam, where it is also in a pre-stressed condition due to the loads carried before the hardening of concrete. Within this framework, the effects of the diagonal bars on the bending stiffness of this composite beam are investigated. First, a closed-form solution for the evaluation of the equivalent bending stiffness is derived. Subsequently, the influence of geometrical and mechanical characteristics of shear reinforcement is studied. Finally, results obtained from parametric and numerical analyses are discussed.
Cite this paper
Trentadue, F. , Mastromarino, E. , Quaranta, G. , Petrone, F. , Monti, G. and Marano, G. (2014) Bending Stiffness of Truss-Reinforced Steel-Concrete Composite Beams. Open Journal of Civil Engineering, 4, 285-300. doi: 10.4236/ojce.2014.43024. 
 

[1] Kasuga, A. (2011) Development of a New Bridge Construction Method Using Suspension Structures. Structural Concrete, 12, 65-75.
http://dx.doi.org/10.1002/suco.201000002
[2] Strásky, J., Necas, R. and Kolácek, J. (2012) Dynamic Response of Concrete Footbridge. Structural Concrete, 13, 109-118.
http://dx.doi.org/10.1002/suco.201200001
[3] Durfee, R. (1986) Review of Triangular Cross Section Truss Systems. Journal of Structural Engineering, 112, 1088-1096.
http://dx.doi.org/10.1061/(ASCE)0733-9445(1986)112:5(1088)
[4] Quaranta, G., Petrone, F., Marano, G.C., Trentadue, F. and Monti, G. (2010) Structural Design of Composite Concrete-Steel Beams with Spatial Truss Reinforcement Elements. Asian Journal of Civil Engineering, 12, 155-178.
[5] Mark, P. (2005) Truss Models for the Design of Reinforced Concrete Beams Subject to Biaxial Shear. Structures Congress 2005: Metropolis and Beyond, ASCE, New York, 1-10.
http://ascelibrary.org/doi/abs/10.1061/40753(171)168
[6] Sanches Júnior, F. and Venturini, W.S. (2007) Damage Modelling of Reinforced Concrete Beams. Advances in Engineering Software, 38, 538-546.
http://dx.doi.org/10.1016/j.advengsoft.2006.08.025
[7] Trentadue, F., Marano, G.C., Quaranta, G. and Mastromarino, E. (2011) Instability of Self-Supportingtruss-Reinforced Composite Steel-Concrete Beams. Waveng srl Ed., ISBN 978-88-903782-2-5, (in Italian).
[8] Trentadue, F., Quaranta, G., Marano, G.C. and Monti, G. (2011) Simplified Lateral-Torsional Buckling Analysis in Special Truss-Reinforced Composite Steel-Concrete Beams. Journal of Structural Engineering, 137, 1419-1427.
http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000390
[9] Petrone, F., Liotta, M., Monti, G., Marano, G.C. and Trentadue, F. (2011) Studio sperimentale per la valutazione del contributo del calcestruzzo nella resistenza a taglio delle travi reticolari miste. In: Braga, F. and Mezzina, M., Eds., Proceedings of the 14th Conference of the Italian National Association of Earthquake Engineering, Bari, September 2011.
[10] Monti, G. and Petrone, F. (2014) Shear Resisting Mechanisms and Design Capacity Equations for Composite Truss Beams (CTB). Journal of Structural Engineering, ASCE, (in press).
[11] Scotta, R. and Tesser, L. (2011) Prove sperimentali di rottura ciclica di nodi trave-pilastro realizzati con struttura reticolare mista. In: Braga, F. and Mezzina, M., Eds., Proceedings of the 14th Conference of the Italian National Association of Earthquake Engineering, Bari, September 2011.
[12] Nie, J., Fan, J. and Cai, C. (2004) Stiffness and Deflection of Steel-Concrete Composite Beams under Negative Bending. Journal of Structural Engineering, 130, 1842-1851.
http://dx.doi.org/10.1061/(ASCE)0733-9445(2004)130:11(1842)
[13] Castel, A., Vidal, T. and Fran?ois, R. (2012) Finite-Element Modeling to Calculate the Overall Stiffness of Cracked Reinforced Concrete Beams. Journal of Structural Engineering, 138, 889-898.
http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000520        eww141008lx
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