Proceedings Vol. 27/28 (2022)
ENGINEERING MECHANICS 2022
May 9 – 12, 2022, Milovy, Czech Republic
Copyright © 2022 Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prague
ISBN 978-80-86246-51-2 (electronic)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)
list of papers scientific commitee
pages 193 - 196, full text
The paper make attempt to give some answers about the differences between the current models of the theory of creep of concrete: Eurocode 2, ACI 209-R2 and Gardener&Lockman models, using the results obtained by time dependent analysis of composite steel-concrete beams. On the basis of the theory of the viscoelastic body of Arutyunian–Trost-Bažant for determining the redistribution of stresses in beam section between concrete plate and steel beam with respect to time "t", two independent Volterra integral equations of the second kind have been derived. Numerical method based on linear approximation of the singular kernel function in the integral equation is presented. The elastic modulus of concrete Ec(t) is assumed to be constant in time "t".
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All papers were reviewed by members of the scientific committee.