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Analysis of time-dependent flexural behaviour of concrete members reinforced with fibre reinforced polymer bar

In this work, long-term behaviour of FRP RC beams has been investigated both analytically and experimentally to further extend the knowledge in this particular research domain. In this respect, a new methodology to determine the long-term deflections due to creep and shrinkage is presented. Based on multiplicative coefficients, the methodology is straightforward and simple, and therefore suitable to be used in design. In addition, an experimental campaign on two series of GFRP RC beams subject to long-term loading has been performed. Different reinforcement ratios, concrete strengths and sustained load levels have been considered. For comparison purposes steel reinforcement has also been used. The experimental long-term results have been reported and discussed. Furthermore they have been compared to predictions using the most representative procedures, as well as, the proposed methodology presented in this work.

En aquest treball, es presenta una nova metodologia per a la determinaci贸 de fletxes diferides degudes als efectes de la flu猫ncia i la retracci贸 del formig贸. La metodologia presentada es basa en coeficients multiplicadors, essent aix铆 un m猫tode directe i simple, apte per ser utilitzar en el disseny. Addicionalment, l鈥檈studi presenta els resultats d鈥檜na campanya experimental realitzada en dues etapes, on bigues armades amb barres de material compost han estat sotmeses a c脿rregues a llarg termini. S鈥檋an considerat diferents quanties de refor莽, resist猫ncies de formig贸 i nivells de c脿rrega. Per tal de comparar-ne els resultats, tamb茅 s鈥檋an assajat bigues armades amb barres d鈥檃cer. Els resultats experimentals han estat analitzats i comparats amb els models de predicci贸 m茅s significatius, aix铆 com amb la metodologia desenvolupada i presentada en aquest estudi.

Universitat de Girona

Manager: Torres Llin脿s, Llu铆s
Turon Travesa, Albert
Other contributions: Universitat de Girona. Departament d鈥橢nginyeria mec脿nica i de la construcci贸 industrial
Author: Mi脿s Oller, Cristina
Date: 2012 December 3
Abstract: In this work, long-term behaviour of FRP RC beams has been investigated both analytically and experimentally to further extend the knowledge in this particular research domain. In this respect, a new methodology to determine the long-term deflections due to creep and shrinkage is presented. Based on multiplicative coefficients, the methodology is straightforward and simple, and therefore suitable to be used in design. In addition, an experimental campaign on two series of GFRP RC beams subject to long-term loading has been performed. Different reinforcement ratios, concrete strengths and sustained load levels have been considered. For comparison purposes steel reinforcement has also been used. The experimental long-term results have been reported and discussed. Furthermore they have been compared to predictions using the most representative procedures, as well as, the proposed methodology presented in this work.
En aquest treball, es presenta una nova metodologia per a la determinaci贸 de fletxes diferides degudes als efectes de la flu猫ncia i la retracci贸 del formig贸. La metodologia presentada es basa en coeficients multiplicadors, essent aix铆 un m猫tode directe i simple, apte per ser utilitzar en el disseny. Addicionalment, l鈥檈studi presenta els resultats d鈥檜na campanya experimental realitzada en dues etapes, on bigues armades amb barres de material compost han estat sotmeses a c脿rregues a llarg termini. S鈥檋an considerat diferents quanties de refor莽, resist猫ncies de formig贸 i nivells de c脿rrega. Per tal de comparar-ne els resultats, tamb茅 s鈥檋an assajat bigues armades amb barres d鈥檃cer. Els resultats experimentals han estat analitzats i comparats amb els models de predicci贸 m茅s significatius, aix铆 com amb la metodologia desenvolupada i presentada en aquest estudi.
Format: application/pdf
Document access: http://hdl.handle.net/10803/96914
Language: eng
Publisher: Universitat de Girona
Subject: Materials de construcci贸. Pr脿ctiques i procediments de construcci贸
Title: Analysis of time-dependent flexural behaviour of concrete members reinforced with fibre reinforced polymer bar
Type: doctoralThesis
Repository: TDX

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