Open Access Dissertation
Date of Award
Civil and Environmental Engineering
FINITE ELEMENT MODELING OF FRP STRENGTHENED CONCRETE BEAMS
AND COLUMNS AT DIFFERENT TEMPERATURES
BASSMA I. GAWIL
Advisor: Dr. Hwai-Chung Wu
Major: Civil and Environmental Engineering (Structural Engineering)
Degree: Doctor of Philosophy
Collapse of buildings or bridges is one of the worst scenarios to which built-infrastructure
may be subjected during their lifetime. In recent years, due to external environmental conditions
(temperature and humidity). Often times these effects are not immediately evident and develop
years later – making determination of responsibility difficult and repair expensive.
Fiber reinforced polymer (FRP) has proven efficient and economical for the development
and repair of new and deteriorating structures in civil engineering. New construction includes all
composite bridge decks or FRP bars. The mechanical properties of advanced composites (high
strength, light weight) make them ideal for widespread applications in construction worldwide.
The present investigation intends to study the effects of changing temperature on the
mechanical properties of FRPs composites and the effect of deteriorated composites on the
structural behavior of FRP bonded concrete structures when subjected to realistic environmental
conditions. The overall approach was consisting of computations using finite element models to
simulate beam or column performance using ABAQUS software. Computer simulations based on advanced methods, such as the finite element method (FEM), are reliable and effective
alternatives to structural analysis for the study of structural response and performance.
Also, temperature effect on failure loads of FRP strengthened beam and column with
adhesive material and the contact bonding are enabled in the cohesive behavior option of the
contact interaction property in this study.
In addition, the temperature effect was implemented in the ABAQUS-CAE three
dimensional extended finite element package to account for the bond strength deterioration at the
interface between concrete and FRP strengthening fabric.
In this work, ABAQUS/CAE 6.13-1 was used to simulate several test results from
previous works. The FE results were validated with the experimental performance data,
regarding failure mode and load-displacement behavior. One of the major advantages of this
software is the flexibility of implementing, revising, analyzing the model, and producing results.
Finally, conclusions and suggestions for future research are presented.
Gawil, Bassma Ibrahim, "Finite Element Modeling Of Frp Strengthened Concrete Beams And Columns At Different Temperatures" (2016). Wayne State University Dissertations. 1637.