Title

Fully Probabilistic Analysis of FRP-to-Concrete Bonded Joints Considering Model Uncertainty

Document Type

Article

Language

eng

Publication Date

2-1-2018

Publisher

Elsevier

Source Publication

Composite Structures

Source ISSN

0263-8223

Abstract

This work presents a full reliability-based analysis framework for fiber-reinforced polymer(FRP)-to-concrete bonded joints considering model uncertainty. Eight frequently used bond strength models for FRP-to-concrete bonded joints were calibrated by defining a model factor. A total of 641 well-documented tests were considered. Four of the eight models had model factors that correlated with input design parameters and the systematic part of the model factor was removed by a regression equation f. By doing this type of characterization, all eight model factors could be comparatively uniform and described by lognormally distributed random variables. The merit of the uniform model uncertainties after calibration for the eight models was established by the reliability analysis. This study improves the predictability of concrete strengthened with fiber composites and provides useful suggestions on their model uncertainties in engineering practice.

Comments

Composite Structures, Vol. 185 (February 1, 2018): 786-806. DOI.

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