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Jonas Johansson

Jonas Johansson

Universitetslektor

Jonas Johansson

Quantitative assessment of the impact of climate change on creep of concrete structures

Författare

  • Amro Nasr
  • Erik Kjellström
  • Oskar Larsson Ivanov
  • Jonas Johansson
  • Ivar Björnsson
  • Daniel Honfi

Summary, in English

Creep of concrete structures is in most cases regarded as a serviceability problem that may have impacts on maintenance and repair costs but cannot lead to structural collapse. However, several structural collapses during the past decades have been, at least partly, attributed to excessive creep deformations. Recent studies suggest that concrete creep may be further exacerbated by climate change. The current study demonstrates how this effect can be quantitatively assessed. For this purpose, six different creep models (i.e, Model Code 1999, Model Code 2010, MPF, B3, B4, and B4s models) are used under considerations of historical and future climatic conditions in southernmost Sweden as given by a regional climate model. Furthermore, two different simulations were performed as follows: 1) considering only climate uncertainty represented by the climate model, and 2) considering climate uncertainty, parameter uncertainty, and creep model uncertainty. The highest impact of climate change on end of century creep coefficient is observed using model B4 where the 75th percentile of the increase in creep coefficient is found to range from 8% to ∼14% depending on the climate scenario. The results of the assessment in this article show that the uncertainty related to climate change on creep of concrete structures (higher effect in RCP8.5 than in RCP2.6 and RCP4.5 which have very similar results) is much smaller than uncertainties resulting from creep modelling.

Avdelning/ar

  • Avdelningen för Konstruktionsteknik
  • Avdelningen för Riskhantering och Samhällssäkerhet

Publiceringsår

2021

Språk

Engelska

Sidor

1318-1325

Publikation/Tidskrift/Serie

Proceedings of the 31st European Safety and Reliability Conference (ESREL 2021)

Dokumenttyp

Konferensbidrag

Förlag

Research Publishing, Singapore

Ämne

  • Environmental Engineering
  • Environmental Analysis and Construction Information Technology

Conference name

31st European Safety and Reliability Conference, ESREL 2022

Conference date

2021-09-19 - 2021-09-23

Conference place

Angers, France

Status

Published

ISBN/ISSN/Övrigt

  • ISBN: 978-981-18-2016-8