Publication detail

Influence of Partial Safety Factors on Design Reliability of Steel Structure -Probability and Fuzzy Probability Assessments

KALA, Z.

Original Title

Influence of Partial Safety Factors on Design Reliability of Steel Structure -Probability and Fuzzy Probability Assessments

Type

journal article - other

Language

English

Original Abstract

The paper is aimed at the analysis of the influence of partial safety factors on the reliability of design of steel members. The reliability assessment of the steel member is based on extensive experimental research on real material and geometric characteristics evaluated from samples obtained from frequently manufactured products. Material and geometric characteristics are random variables represented by histograms during the probabilistic assessment of reliability. The random variability of structural dimensions and of material characteristics does not present the only source of uncertainty present during design according to standards. The reliability of design of steel structures is also dependent on the partial safety factor values, which are specified by the design standards. Partial safety factors are basic indicators, which determine structural dimensions in relation to loading. The probabilistic assessment of reliability is performed as a parametric stud in the first part of the numerical analysis. The probability of failure is analysed in dependence to values of partial safety factors of material, permanent loading and long time variable loading. Partial safety factors are considered as fuzzy numbers with triangular membership functions in the second part of the numerical analysis. Membership functions of failure probability are evaluated using the general extension principle. The most important results are then summarised and additional applications of the verifications of limit states design criteria are described.

Keywords

steel, probability, fuzzy, stability, sensitivity

Authors

KALA, Z.

RIV year

2007

Released

15. 4. 2007

Location

Vilnius

ISBN

1392-3730

Periodical

Journal of civil engineering and management

Year of study

13

Number

4

State

Republic of Lithuania

Pages from

291

Pages to

296

Pages count

6

BibTex

@article{BUT44104,
  author="Zdeněk {Kala}",
  title="Influence of Partial Safety Factors on Design Reliability of Steel Structure -Probability and Fuzzy Probability Assessments",
  journal="Journal of civil engineering and management",
  year="2007",
  volume="13",
  number="4",
  pages="291--296",
  issn="1392-3730"
}