Long-term strain development of concrete subjected to creep and cyclic loading

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Original languageEnglish
Title of host publicationProceedings of the 2021 session of the 13th fib International PhD Symposium in Civil Engineering, 2021
EditorsFabrice Gatuingt, Jean-Michel Torrenti
Pages251-257
Number of pages7
Publication statusPublished - 2021
Event13th fib International PhD Symposium in Civil Engineering, 2021 - Virtual, Online
Duration: 21 Jul 202122 Jul 2021

Publication series

Namefib Symposium
ISSN (Print)2617-4820

Abstract

The deformations during the service life of concrete structures are predicted using creep models, assuming a constant loading. However, many structures are not only subject to static creep loads but to cyclic loads as well. The supeiposition of both load types can lead to significantly increased concrete deformations compared to deformations predicted by existing creep models. This might result in serious damage and safety risks. Hereinafter, the viscous strain development of a nomial-strength concrete due to static creep and cyclic loading under corresponding stress levels are presented. The results show that even for low stress levels of Smax ≤ 0.45, there are differences in the cyclic and creep strain curves. For higher stress levels, the influence is expected to be even more significant. Therefore, an adjustment of current dimensioning models is necessary.

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Long-term strain development of concrete subjected to creep and cyclic loading. / Kern, Bianca; Oneschkow, Nadja; Lohaus, Ludger et al.
Proceedings of the 2021 session of the 13th fib International PhD Symposium in Civil Engineering, 2021. ed. / Fabrice Gatuingt; Jean-Michel Torrenti. 2021. p. 251-257 (fib Symposium).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Kern, B, Oneschkow, N, Lohaus, L & Haist, M 2021, Long-term strain development of concrete subjected to creep and cyclic loading. in F Gatuingt & J-M Torrenti (eds), Proceedings of the 2021 session of the 13th fib International PhD Symposium in Civil Engineering, 2021. fib Symposium, pp. 251-257, 13th fib International PhD Symposium in Civil Engineering, 2021, Virtual, Online, 21 Jul 2021.
Kern, B., Oneschkow, N., Lohaus, L., & Haist, M. (2021). Long-term strain development of concrete subjected to creep and cyclic loading. In F. Gatuingt, & J.-M. Torrenti (Eds.), Proceedings of the 2021 session of the 13th fib International PhD Symposium in Civil Engineering, 2021 (pp. 251-257). (fib Symposium).
Kern B, Oneschkow N, Lohaus L, Haist M. Long-term strain development of concrete subjected to creep and cyclic loading. In Gatuingt F, Torrenti JM, editors, Proceedings of the 2021 session of the 13th fib International PhD Symposium in Civil Engineering, 2021. 2021. p. 251-257. (fib Symposium).
Kern, Bianca ; Oneschkow, Nadja ; Lohaus, Ludger et al. / Long-term strain development of concrete subjected to creep and cyclic loading. Proceedings of the 2021 session of the 13th fib International PhD Symposium in Civil Engineering, 2021. editor / Fabrice Gatuingt ; Jean-Michel Torrenti. 2021. pp. 251-257 (fib Symposium).
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title = "Long-term strain development of concrete subjected to creep and cyclic loading",
abstract = "The deformations during the service life of concrete structures are predicted using creep models, assuming a constant loading. However, many structures are not only subject to static creep loads but to cyclic loads as well. The supeiposition of both load types can lead to significantly increased concrete deformations compared to deformations predicted by existing creep models. This might result in serious damage and safety risks. Hereinafter, the viscous strain development of a nomial-strength concrete due to static creep and cyclic loading under corresponding stress levels are presented. The results show that even for low stress levels of Smax ≤ 0.45, there are differences in the cyclic and creep strain curves. For higher stress levels, the influence is expected to be even more significant. Therefore, an adjustment of current dimensioning models is necessary.",
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T1 - Long-term strain development of concrete subjected to creep and cyclic loading

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AU - Oneschkow, Nadja

AU - Lohaus, Ludger

AU - Haist, Michael

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AB - The deformations during the service life of concrete structures are predicted using creep models, assuming a constant loading. However, many structures are not only subject to static creep loads but to cyclic loads as well. The supeiposition of both load types can lead to significantly increased concrete deformations compared to deformations predicted by existing creep models. This might result in serious damage and safety risks. Hereinafter, the viscous strain development of a nomial-strength concrete due to static creep and cyclic loading under corresponding stress levels are presented. The results show that even for low stress levels of Smax ≤ 0.45, there are differences in the cyclic and creep strain curves. For higher stress levels, the influence is expected to be even more significant. Therefore, an adjustment of current dimensioning models is necessary.

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