Long-term deformational simulation of PC bridges based on the thermo-hygro model of micro-pores in cementitious composites

Maekawa, Koichi; Chijiwa, Nobuhiro; Ishida, Tetsuya

doi:10.1016/j.cemconres.2011.03.021

Title: Long-term deformational simulation of PC bridges based on the thermo-hygro model of micro-pores in cementitious composites

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Abstract

Creep deflections that greatly exceed the predicted values by the linear creep law are being found in measurements on actual PC bridge viaducts. In this study, structural creep deformations were reproduced by using the multi-scale coupled thermo-hygro and mechanical modeling which enables to deal with an interaction of chemo-physical events of differing dimensions ranging from the kinematics of moisture in micro-pores to the macroscopic structural mechanics, and the effect of various factors was analytically investigated. The numerical analysis approximately reproduced the excessive deflection measured on an actual bridge viaduct. It was confirmed that the creep bending of the viaduct having the hollow cross-section varies significantly due to the ambient temperature, humidity and the structural specific surface area. The macroscopic structural responses in association with the thermodynamic state of moisture in the micro-pores are also discussed.

Authors:: Maekawa, Koichi; Chijiwa, Nobuhiro; Ishida, Tetsuya

Publication Date:: Thu Dec 15 00:00:00 EST 2011

OSTI Identifier:: 21576906

Resource Type:: Journal Article

Journal Name:: Cement and Concrete Research

Additional Journal Information:: Journal Volume: 41; Journal Issue: 12; Conference: International summit on cement hydration kinetics and modeling;CONMOD10: Symposium on concrete modelling, Quebec City, PB (Canada);Lausanne (Switzerland), 27-29 Jul 2009;22-25 Jun 2010; Other Information: DOI: 10.1016/j.cemconres.2011.03.021; PII: S0008-8846(11)00097-4; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Journal ID: ISSN 0008-8846

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; AMBIENT TEMPERATURE; BENDING; CREEP; CROSS SECTIONS; DRYING; HUMIDITY; INTERACTIONS; MECHANICS; MIGRATION; NUMERICAL ANALYSIS; SHRINKAGE; SIMULATION; SPECIFIC SURFACE AREA; DEFORMATION; MATHEMATICS; MECHANICAL PROPERTIES; MOISTURE; PHYSICAL PROPERTIES

Citation Formats


                    Maekawa, Koichi, Chijiwa, Nobuhiro, and Ishida, Tetsuya. Long-term deformational simulation of PC bridges based on the thermo-hygro model of micro-pores in cementitious composites.  United States: N. p., 2011. 
        Web.  doi:10.1016/j.cemconres.2011.03.021.

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                    Maekawa, Koichi, Chijiwa, Nobuhiro, & Ishida, Tetsuya. Long-term deformational simulation of PC bridges based on the thermo-hygro model of micro-pores in cementitious composites.  United States.  https://doi.org/10.1016/j.cemconres.2011.03.021

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                    Maekawa, Koichi, Chijiwa, Nobuhiro, and Ishida, Tetsuya. 2011.  
        "Long-term deformational simulation of PC bridges based on the thermo-hygro model of micro-pores in cementitious composites".  United States.  https://doi.org/10.1016/j.cemconres.2011.03.021.

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@article{osti_21576906,

  title        = {Long-term deformational simulation of PC bridges based on the thermo-hygro model of micro-pores in cementitious composites},

  author       = {Maekawa, Koichi and Chijiwa, Nobuhiro and Ishida, Tetsuya},

  abstractNote = {Creep deflections that greatly exceed the predicted values by the linear creep law are being found in measurements on actual PC bridge viaducts. In this study, structural creep deformations were reproduced by using the multi-scale coupled thermo-hygro and mechanical modeling which enables to deal with an interaction of chemo-physical events of differing dimensions ranging from the kinematics of moisture in micro-pores to the macroscopic structural mechanics, and the effect of various factors was analytically investigated. The numerical analysis approximately reproduced the excessive deflection measured on an actual bridge viaduct. It was confirmed that the creep bending of the viaduct having the hollow cross-section varies significantly due to the ambient temperature, humidity and the structural specific surface area. The macroscopic structural responses in association with the thermodynamic state of moisture in the micro-pores are also discussed.},

  doi          = {10.1016/j.cemconres.2011.03.021},

  url          = {https://www.osti.gov/biblio/21576906},
  journal      = {Cement and Concrete Research},

  issn         = {0008-8846},

  number       = 12,

  volume       = 41,

  place        = {United States},

  year         = {Thu Dec 15 00:00:00 EST 2011},

  month        = {Thu Dec 15 00:00:00 EST 2011}

}

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