The Eurocodes and Shrinkage in Composite Beamsby Roger P. Johnson, Univ of Warwick, Coventry, England,
Abstract: The two parts of this paper relate to different aspects of design procedures for composite structures of steel and concrete. First, recent developments in the coordination of the eight European Codes of Practice are described, with reference to the long-term objective of harmonisation within the Common Market. In the second part the treatment in design of the effects of shrinkage of concrete is summarised, and accounts are given of three relevant studies. These are: (1) finite element analyses of reductions in shrinkage effects due to slip at the interface and to shear lag in the slab; (2) 15 months of site measurements of changes in the overall length of a 15-span composite viaduct; and (3) laboratory tests extending over 21 months on the influence of cracking on the secondary effects of shrinkage in a two-span beam.
Subject Headings: Steel structures | Shrinkage (material) | Composite structures | Finite element method | Composite beams | Load tests | Concrete structures | Shear tests | Europe
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