Abstract
Analyses of end-block and beam-end specimens have been undertaken based on the finite element models. The purpose of the analyses is to investigate the effects of concrete early age properties on the response behaviour of the anchorage zone. Time dependent strains and stresses in the anchorage zone are evaluated. The mechanical concentrated load represents the anchorage in post-tensioning of slab or beam during construction where the load is transferred typically at 1 and 4-days ages. The analyses incorporate thermal, creep and shrinkage effects. The double power law (DPL) is adopted to represent the creep effects. The ACI 209 and the CEB-FIP shrinkage models in FE TNO DIANA were also adopted to account for shrinkage. The models are validated based on experiments. Results indicate that early ages concrete effects need to be considered for design of sensitive elements in particular such as anchorage zones of post-tensioned elements.
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Acknowledgements
This research is financially supported by the Melbourne Research Scholarship offered by the University of Melbourne and the Australian Research Council’s Discovery Early Career Researcher Grant (DE170100165, DE 2017 R1). This work is financially supported by: Base Funding—UIDB/04708/2020 of the CONSTRUCT—Instituto de I&D em Estruturas e Construções—funded by national funds through the FCT/MCTES (PIDDAC). This work is funded by national funds through FCT—Fundação para a Ciência e a Tecnologia, I.P., under the Scientific Employment Stimulus—Institutional Call—CEECINST/00049/2018.
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Sofi, M., Maia, L., Lumantarna, E., Zhong, A., Mendis, P. (2021). Finite Element Modelling of Concentrated Anchorage Load in Early Age Concrete. In: Pereira, E.B., Barros, J.A.O., Figueiredo, F.P. (eds) Proceedings of the 3rd RILEM Spring Convention and Conference (RSCC2020). RSCC 2020. RILEM Bookseries, vol 32. Springer, Cham. https://doi.org/10.1007/978-3-030-76547-7_24
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DOI: https://doi.org/10.1007/978-3-030-76547-7_24
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