Probabilistic Estimation of Airtightness Performance of Concrete Vacuum Tube Structures

Joo Nam Park; Jeong Min Cho; Hyung Jun Park

doi:10.4028/www.scientific.net/KEM.629-630.565

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 629-630Probabilistic Estimation of Airtightness...

Probabilistic Estimation of Airtightness Performance of Concrete Vacuum Tube Structures

Abstract:

A probabilistic analysis is performed where the pressure change inside a concrete tube is probabilistically estimated considering the uncertainties inherent in the material, system discontinuity and outside pressure. A set of uncertain variables that are related to the equivalent system air permeability and the atmospheric pressure are defined as random variables with specific distributions. The pressure change inside a concrete tube is then probabilistically described using both analytical and simulation approaches. The analysis confirms the need of probabilistic approach for evaluation of the airtightness performance of vacuum tube structures.

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Periodical:

Key Engineering Materials (Volumes 629-630)

Pages:

565-571

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.629-630.565

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Online since:

October 2014

Authors:

Joo Nam Park*, Jeong Min Cho, Hyung Jun Park

Keywords:

Airtightness, Concrete Tube, Probability, Vacuum Tube

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