Verification of existing reinforced concrete bridges using the semi-probabilistic approach

Sýkora, Milan; Holický, Milan; Marková, Jana

doi:10.1016/j.engstruct.2013.07.015

Cited by 42 publications

(23 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Note that the factor a R significantly affects the partial factor c Rd [44]. Further information on derivation of the partial factors in the semi-probabilistic framework can be found elsewhere [6,49]. Note that the model uncertainty factors are here differentiated with respect to the shear strength q w f yw only as the previous studies indicated less significant effect of other shear parameters (such as d or q l ) on the model uncertainty.…”

Section: For Deterministic Reliability Verifications En 1990mentioning

confidence: 98%

Uncertainties in resistance models for sound and corrosion-damaged RC structures according to EN 1992-1-1

et al. 2014

View full text Add to dashboard Cite

Resistance of civil engineering structures is primarily dependent on material properties, geometry and uncertainties related to an applied model. While materials and geometry can be relatively well described, the resistance model uncertainty is not yet well understood. The present paper improves the general concept for the model uncertainty from the Probabilistic model code of the Joint Committee on Structural Safety. Influences affecting results obtained by tests and models and effects of actual structural conditions are overviewed. Statistical characteristics of the uncertainties in resistance of reinforced concrete members are then provided considering simple engineering formulas based on EN 1992-1-1 models and effects of deterioration. To facilitate practical applications the partial factors for the model uncertainties are derived using a semi-probabilistic approach. It appears that the model uncertainties are substantial for shear resistances while they are less significant for the well-established models used for bending resistance and axial compression without buckling. Uncertainty in test procedures seems to be less important in common cases. The effect of the resistance uncertainties on structural reliability seems to be more significant for corrosion-damaged structures than for sound structures. Consequently the quantification of the model uncertainties is a key issue when assessing corrosion-damaged reinforced concrete structures. Further research should be focused on model uncertainties related to the models for shear and corrosion-damaged structures considering the fib Model Code 2010.

show abstract

Section: For Deterministic Reliability Verifications En 1990mentioning

confidence: 98%

Uncertainties in resistance models for sound and corrosion-damaged RC structures according to EN 1992-1-1

et al. 2014

View full text Add to dashboard Cite

show abstract

“…As in other studies (e.g. [40,41]), it is found that the safety level of concrete elements is dependent on the ratio v of the variable load effect to the total load effect.…”

Section: Probabilistic Assessment Of the Structural Safety Level At 20°cmentioning

confidence: 86%

Reliability-based evaluation of the inherent safety presumptions in common fire safety design

Coile

Caspeele

Taerwe

2014

Engineering Structures

View full text Add to dashboard Cite

“…The differences in target reliability can be readily reflected by updating partial factors in practical verifications [27,28].…”

Section: Application To a Railway Bridgementioning

confidence: 99%

Human safety criteria for risk-based structural design

Sýkora¹,

Holický²,

Jung³

et al. 2018

Int. J. SAFE

View full text Add to dashboard Cite

Risk and reliability criteria are well established in many industrial sectors such as the offshore, chemical or nuclear industries. Comparative risk thresholds have been specified to allow a responsible organization or regulator to identify activities, which impose an acceptable level of risk concerning the participating individuals, or society as a whole. The scope of this contribution is to present target reliability criteria based on acceptable human safety levels. Application of theoretical principles is illustrated by examples of railway engineering structures. Initially it is shown how civil engineering structures for which human safety criteria play a role are classified according to Eurocodes. Examples include bridges, tunnels or station buildings. The general concepts for risk acceptance are then briefly reviewed, particularly in their relation to the target reliability criteria. The distinction between the two types of criteria is made: group risk and the acceptance criterion based on the Life Quality Index LQI approach introduced by ISO 2394:2015. The differences between the criteria for new and existing structures are discussed. The application is illustrated by an example of a bridge crossing an important railway line. It appears that while benefits and costs of a private stakeholder or public authority are reflected by economic optimisation, the society should define the limits for human safety to achieve uniform risks for various daily-life activities and across different industrial sectors.

show abstract

Verification of existing reinforced concrete bridges using the semi-probabilistic approach

Cited by 42 publications

References 17 publications

Uncertainties in resistance models for sound and corrosion-damaged RC structures according to EN 1992-1-1

Uncertainties in resistance models for sound and corrosion-damaged RC structures according to EN 1992-1-1

Reliability-based evaluation of the inherent safety presumptions in common fire safety design

Human safety criteria for risk-based structural design

Contact Info

Product

Resources

About