Probabilistic evaluation of behaviour factors in EC8-designed R/C frames

Marios K. Chryssanthopoulos; Christiana Dymiotis; Andreas J. Kappos

doi:10.1016/S0141-0296(99)00026-7

Probabilistic evaluation of behaviour factors in EC8-designed R/C frames

Marios K. Chryssanthopoulos, Christiana Dymiotis, Andreas J. Kappos

Civil & Environmental Engineering

Imperial College London

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

A methodology for the probabilistic assessment of reinforced concrete (R/C) frames which takes into account material variability, confinement model uncertainty and the uncertainty in local and global failure criteria is applied for the derivation of vulnerability curves for the serviceability and ultimate limit states of a multi-storey frame designed to Eurocode 8. By combining the uncertainties affecting structural vulnerability and seismic hazard, the seismic reliability is quantified in terms of the probability of failure for any given design life period. It is found that, while adequate safety margins exist for the ULS, the reliability against the SLS strongly depends on the structural criterion adopted for the definition of this state. The variability in the actual behaviour factor of this frame is also estimated, and the appropriateness of the EC8 specified value is assessed.

Original language	British English
Pages (from-to)	1028-1041
Number of pages	14
Journal	Engineering Structures
Volume	22
Issue number	8
DOIs	https://doi.org/10.1016/S0141-0296(99)00026-7
State	Published - Jun 2000

Keywords

Behaviour factors
Eurocodes
Probabilistic methods
R/C frames
Seismic design

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10.1016/S0141-0296(99)00026-7

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title = "Probabilistic evaluation of behaviour factors in EC8-designed R/C frames",

abstract = "A methodology for the probabilistic assessment of reinforced concrete (R/C) frames which takes into account material variability, confinement model uncertainty and the uncertainty in local and global failure criteria is applied for the derivation of vulnerability curves for the serviceability and ultimate limit states of a multi-storey frame designed to Eurocode 8. By combining the uncertainties affecting structural vulnerability and seismic hazard, the seismic reliability is quantified in terms of the probability of failure for any given design life period. It is found that, while adequate safety margins exist for the ULS, the reliability against the SLS strongly depends on the structural criterion adopted for the definition of this state. The variability in the actual behaviour factor of this frame is also estimated, and the appropriateness of the EC8 specified value is assessed.",

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AB - A methodology for the probabilistic assessment of reinforced concrete (R/C) frames which takes into account material variability, confinement model uncertainty and the uncertainty in local and global failure criteria is applied for the derivation of vulnerability curves for the serviceability and ultimate limit states of a multi-storey frame designed to Eurocode 8. By combining the uncertainties affecting structural vulnerability and seismic hazard, the seismic reliability is quantified in terms of the probability of failure for any given design life period. It is found that, while adequate safety margins exist for the ULS, the reliability against the SLS strongly depends on the structural criterion adopted for the definition of this state. The variability in the actual behaviour factor of this frame is also estimated, and the appropriateness of the EC8 specified value is assessed.

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KW - Eurocodes

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Probabilistic evaluation of behaviour factors in EC8-designed R/C frames

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Keywords

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