Publication result detail

Identification of variation coefficient of equivalent stress range of steel girders with cracks

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

English Title

Identification of variation coefficient of equivalent stress range of steel girders with cracks

Type

Scopus Article

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.

English 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

Key words in English

Equivalent stress range, fatigue, bridge, steel, linear fracture mechanics, probability, reliability

Authors

KALA, Z.; OMISHORE, A.; SEITL, S.; KREJSA, M.; KALA, J.

RIV year

2020

Released

07.08.2019

ISBN

1998-4448

Periodical

International Journal of Mechanics

Volume

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"
}