Research Article
Jun 1982
Random Shrinkage Stresses in Aging Viscoelastic Vessel
Publication: Journal of the Engineering Mechanics Division
Volume 108, Issue 3
Abstract
Shrinkage stresses caused by random variation of environmental humidity in a long cylindrical concrete wall sealed at the internal surface are analyzed, taking creep and aging of concrete into account. The random time-variation of humidity and stress is analyzed by the spectral method using the elastic-viscoelastic analogy. Spatial variations are described by Bessel and Kelvin functions. Numerical examples typical of a 1 m thick reactor containment and a thin shell of 10 cm thickness are given. The environmental humidity varies with a dominant period of one year. The results confirm that, due to low moisture diffusivity, as well as aging, the problem must be analyzed as nonstationary. The mean and the standard deviation are obtained as functions of time as well as location. Random stress fluctuations are found to be significant in all cases and the influence of aging to be strong. In the thicker containment only about 30 percent of the wall thickness ever feels the random variation, while in the thin shell the entire thickness is affected.
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Published In
Journal of the Engineering Mechanics Division
Volume 108 • Issue 3 • June 1982
Pages: 527 - 545
Copyright
© 1982 American Society of Civil Engineers.
History
Published in print: Jun 1982
Published online: Feb 3, 2021
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Tatsuya Tsubaki
Asst. Prof. of Civ. Engrg., Yokohama National Univ., 156 Tokiwadai, Hodogaya-Ku, Yokohama, Japan 240.
Zdeněk P. Bažant, F.ASCE
Prof. of Civ. Engrg., Northwestern Univ., Evanston, Ill. 60201.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.