Probabilistic Design Of FRP Strengthening Of
Concrete Structures
Author(s)
A. Carolin & B. Täljsten
Abstract
For a long period of time CFRP plate bonding has been shown to be a
competitive method for shear strengthening, both in regards to structural
performance and economical aspects. A handful of models for design that
include different strengthening aspects exist. Most proposals are derived from
assumptions made for the design of new structures and are also based on a
deterministic approach where in the best cases a safety factor is added. The use
of probabilistic methods is extending and reliability of a designed structure is
sometimes calculated. This paper presents how the reliability should be used in
the design for strengthening an existing structure, which issues should be
considered and also what safety one can expect from a structure strengthened in
shear. Partial coefficients on material properties and loads are used to give a
uniform treatment of the risk of failure. When partial coefficients are chosen, the
reason for strengthening and the strengthening method may be considered to
achieve an optimal strengthening with respect to structural safety and economy.
The results from the analysis indicate design models for shear strengthening
should be analytically determined with a transparent strategy for the uniform
treatment of reliability aspects.
Keywords: shear strengthening, concrete structures, probabilistic design, frp,
risk management, Monte Carlo simulations.
1 Introduction
All around us there are concrete structures intended for transportation or living.
When such structures are built today, they are designed in accordance with codes
that in many cases, EN [1], have their basis in probabilistic knowledge. Existing
Keywords
shear strengthening, concrete structures, probabilistic design, frp,
risk management, Monte Carlo simulations.
Related Book
Other papers in this volume
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