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Reliability of beams according to Eurocodes in serviceability limit state

Honfi, Daniel LU ; Mårtensson, Annika LU and Thelandersson, Sven LU (2012) In Engineering Structures 35. p.48-54
Abstract
To achieve a relatively consistent probability of failure for structural elements, most design codes apply reliability based code calibration process. Such approaches commonly focus on the strength of the structural members, which is related to the ultimate limit state (ULS). However in the design of beams the performance of the structural elements is often limited by the serviceability requirements, which are related to the serviceability limit state (SLS) using different load combinations than applied in the ultimate limit state. The current study aims to investigate the reliability for serviceability design for flexural members made of different materials (steel, concrete and timber) according to the specifications of the Eurocodes.... (More)
To achieve a relatively consistent probability of failure for structural elements, most design codes apply reliability based code calibration process. Such approaches commonly focus on the strength of the structural members, which is related to the ultimate limit state (ULS). However in the design of beams the performance of the structural elements is often limited by the serviceability requirements, which are related to the serviceability limit state (SLS) using different load combinations than applied in the ultimate limit state. The current study aims to investigate the reliability for serviceability design for flexural members made of different materials (steel, concrete and timber) according to the specifications of the Eurocodes. Second-order reliability method (SORM) is applied to determine the reliability index for different design situations for beams subjected to bending. The probabilistic models of basic variables for time invariant analysis have been taken from the JCSS Probabilistic Model Code. The characteristic, the frequent and the quasi-permanent combination of actions are investigated and compared. The differences in service reliability for different materials are discussed. The results show that there are differences between the achieved reliability indices in the serviceability state between different materials and that for the given load combinations in the Eurocode the reliability index is often below the one given in the code. (C) 2011 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Reliability, Serviceability, Eurocode
in
Engineering Structures
volume
35
pages
48 - 54
publisher
Elsevier
external identifiers
  • wos:000301217300006
  • scopus:84855464769
ISSN
1873-7323
DOI
10.1016/j.engstruct.2011.11.003
language
English
LU publication?
yes
id
34093121-e22a-4a29-b6a4-a6a5b237f977 (old id 2517400)
date added to LUP
2012-05-15 08:15:55
date last changed
2017-08-06 03:14:58
@article{34093121-e22a-4a29-b6a4-a6a5b237f977,
  abstract     = {To achieve a relatively consistent probability of failure for structural elements, most design codes apply reliability based code calibration process. Such approaches commonly focus on the strength of the structural members, which is related to the ultimate limit state (ULS). However in the design of beams the performance of the structural elements is often limited by the serviceability requirements, which are related to the serviceability limit state (SLS) using different load combinations than applied in the ultimate limit state. The current study aims to investigate the reliability for serviceability design for flexural members made of different materials (steel, concrete and timber) according to the specifications of the Eurocodes. Second-order reliability method (SORM) is applied to determine the reliability index for different design situations for beams subjected to bending. The probabilistic models of basic variables for time invariant analysis have been taken from the JCSS Probabilistic Model Code. The characteristic, the frequent and the quasi-permanent combination of actions are investigated and compared. The differences in service reliability for different materials are discussed. The results show that there are differences between the achieved reliability indices in the serviceability state between different materials and that for the given load combinations in the Eurocode the reliability index is often below the one given in the code. (C) 2011 Elsevier Ltd. All rights reserved.},
  author       = {Honfi, Daniel and Mårtensson, Annika and Thelandersson, Sven},
  issn         = {1873-7323},
  keyword      = {Reliability,Serviceability,Eurocode},
  language     = {eng},
  pages        = {48--54},
  publisher    = {Elsevier},
  series       = {Engineering Structures},
  title        = {Reliability of beams according to Eurocodes in serviceability limit state},
  url          = {http://dx.doi.org/10.1016/j.engstruct.2011.11.003},
  volume       = {35},
  year         = {2012},
}