Vrcelj, Zora, Bradford, Mark A and Ranzi, Gianluca (2008) Buckling of Continuous Steel-Concrete T-Beams with Partial Interaction Caused by Shrinkage and Creep of the Slab. In: Proceedings of the 5th International Conference on Advances in Steel Structures. Liew, J. Y. Richard and Choo, Y. S, eds. Research Publishing, Singapore.

Abstract

This paper is concerned with the time-dependent buckling behaviour of continuous composite steelconcrete T-section beams with varying degree of shear connection. Creep and shrinkage effects in composite steel-concrete structures may cause a redistribution of internal actions within a member, which increases significantly the compression within the steel component, and that may lead to erosion of the buckling resistance of the steel member. In this paper, models for the in-plane analysis of continuous composite beams with varying degree of shear connection stiffness and subjected to creep and shrinkage of the slab, and the out-of-plane buckling analysis capable of predicting local, distortional and lateral buckling modes are combined to study the time-dependent buckling behaviour of continuous composite beams. A parametric study is then undertaken to evaluate the effects of shear connection stiffness and geometric beam properties on the long-term elastic buckling capacities of these beams, and some conclusions are drawn. Paper presented at the Fifth International Conference on Advances in Steel Structures, 5-7 December, 2007, Singapore

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