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KALA, Z. OMISHORE, A. SEITL, S. KREJSA, M. KALA, J.
Original Title
Identification of variation coefficient of equivalent stress range of steel girders with cracks
Type
journal article in Scopus
Language
English
Original Abstract
A steel bridge in operation is subjected to multiple variable stress range spectrum from the passage of axles of vehicles of different weights. The fatigue reliability assessment of steel bridges can be performed using the equivalent stress range, which is converted from the variable stress range spectrum. The paper presents a case study of the identification of the coefficient of variation of the equivalent stress range of steel girders. The histogram of equivalent stress range is statistically evaluated with consideration to uncertainties resulting from the statistical evaluation of the histogram of stress range spectrum from field monitoring. It is shown that the equivalent stress range can be rationally considered as a random variable with Gauss probability density function with coefficient of variation of 0.1. The case study is evaluated using the Latin Hypercube Sampling statistical method. The results are exploitable in the probabilistic analyses of reliability and lifetime of bridges using linear elastic fracture mechanics.
Keywords
Equivalent stress range, fatigue, bridge, steel, linear fracture mechanics, probability, reliability
Authors
KALA, Z.; OMISHORE, A.; SEITL, S.; KREJSA, M.; KALA, J.
Released
7. 8. 2019
ISBN
1998-4448
Periodical
International Journal of Mechanics
Year of study
13
Number
2019
State
United States of America
Pages from
69
Pages to
78
Pages count
10
URL
http://www.naun.org/main/NAUN/mechanics/2019/a182003-acb.pdf
BibTex
@article{BUT158524, author="Zdeněk {Kala} and Abayomi {Omishore} and Stanislav {Seitl} and Martin {Krejsa} and Jiří {Kala}", title="Identification of variation coefficient of equivalent stress range of steel girders with cracks", journal="International Journal of Mechanics", year="2019", volume="13", number="2019", pages="69--78", issn="1998-4448", url="http://www.naun.org/main/NAUN/mechanics/2019/a182003-acb.pdf" }