Reliability-based calibration of design code formulas

Application to shear resistance formulas for reinforced concrete members without shear reinforcement

Journal article (2022)

Authors

Y. Yang Concrete Structures - CEG
Research Group
Concrete Structures (CEG) (TU Delft)
Copyright: © 2022 Arthur Slobbe, Árpád Rózsás, Y. Yang
DOI: https://doi.org/10.1002/suco.202200583
More Info
expand_more

Published Date

2022

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Concrete Structures

Abstract

This paper presents a reliability-based calibration method for design code formulas. The method is demonstrated on the shear design formulas in Eurocode 2 and fib Model Code 2010 (MC2010). We found that the partial factor (Formula presented.) in the current Eurocode 2 is about 20% lower than the optimal value and, thus, provides an insufficient safety margin. The obtained optimal partial factor (Formula presented.) in the (modified) Eurocode 2 and MC2010 formulas is 1.53 and 1.36, respectively. The difference stems from higher accuracy and, hence, lower uncertainty of the MC2010 model in predicting experimental results. Hence, on average, the MC2010 formula leads to about 13% larger design resistances compared to Eurocode 2 given that the target reliability for both design formulas is the same. To stimulate and facilitate future structural code development and derivation of partial factors, we make the used computer code freely available.

Files

Structural_Concrete_2022_Slobb... (pdf)
(pdf | 3.72 Mb)
- Embargo expired in 01-07-2023
Unknown license