A viscoelastic model for the long-term deflection of segmental prestressed box girders

Beltempo, Angela and Bursi, Oreste S. and Cappello, Carlo and Zonta, Daniele and Zingales, Massimiliano (2017) A viscoelastic model for the long-term deflection of segmental prestressed box girders. Computer-Aided Civil and Infrastructure Engineering. pp. 1-15. ISSN 1467-8667

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    Abstract

    Most of segmental prestressed concrete box girders exhibit excessive multidecade deflections unforeseeable by past and current design codes. To investigate such a behavior, mainly caused by creep and shrinkage phenomena, an effective finite element (FE) formulation is presented in this article. This formulation is developed by invoking the stationarity of an energetic principle for linear viscoelastic problems and relies on the Bazant creep constitutive law. A case study representative of segmental prestressed concrete box girders susceptible to creep is also analyzed in the article, that is, the Colle Isarco viaduct. Its FE model, based on the aforementioned energetic formulation, was successfully validated through the comparison with monitoring field data. As a result, the proposed 1D FE model can effectively reproduce the past behavior of the viaduct and predict its future behavior with a reasonable run time, which represents a decisive factor for the model implementation in a decision support system.

    ORCID iDs

    Beltempo, Angela, Bursi, Oreste S., Cappello, Carlo, Zonta, Daniele ORCID logoORCID: https://orcid.org/0000-0002-7591-9519 and Zingales, Massimiliano;
    • Item type:Article
      ID code:62965
      Dates:
      Date
      Event
      25 October 2017
      Published
      25 October 2017
      Published Online
      19 September 2017
      Accepted
      Notes:This is the peer reviewed version of the following article: Beltempo, A, Bursi, OS, Cappello, C, Zonta, D & Zingales, M 2017, 'A viscoelastic model for the long-term deflection of segmental prestressed box girders' Computer-Aided Civil and Infrastructure Engineering, pp. 1-15, which has been published in final form at https://doi.org/10.1111/mice.12311. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
      Keywords:prestressed concrete box girders, multidecade deflections , creep , shrinkage , finite element (FE) formulation, Engineering (General). Civil engineering (General), Civil and Structural Engineering, Computer Science Applications, Computer Graphics and Computer-Aided Design, Computational Theory and Mathematics
      Subjects:Technology > Engineering (General). Civil engineering (General)
      Department:Faculty of Engineering > Civil and Environmental Engineering
      Depositing user: Pure Administrator
      Date deposited:22 Jan 2018 12:35
      Last modified:23 Sep 2021 06:34
      Related URLs:
      URI:https://strathprints.strath.ac.uk/id/eprint/62965
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