Numerical and experimental investigation into the fatigue life of FRP bonded to concrete and anchored with bidirectional fabric patches
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28399269%3A_____%2F21%3AN0000010" target="_blank" >RIV/28399269:_____/21:N0000010 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/abs/pii/S0141029621004855?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0141029621004855?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.engstruct.2021.112335" target="_blank" >10.1016/j.engstruct.2021.112335</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Numerical and experimental investigation into the fatigue life of FRP bonded to concrete and anchored with bidirectional fabric patches
Popis výsledku v původním jazyce
Although extensive research has been conducted into the use of fibre reinforced polymers (FRPs) in strengthening of concrete structures under static loads, their fatigue behaviour when subjected to cyclic loading still requires investigation. The issue of fatigue performance of FRP strengthening systems is mostly relevant to the strengthening of concrete bridges which are subjected to significant traffic loading cycles throughout their lifetime. In order to offset some of the shortcomings of externally bonded FRPs, anchorage systems are commonly used in bridge strengthening applications in conjunction with FRPs externally bonded to concrete in order to mitigate premature debonding failure. This paper presents a summary of numerical and experimental investigations conducted to evaluate the fatigue performance of externally-bonded FRP laminates anchored with bidirectional fibre patch anchors. The anchored laminates were bonded to reinforced concrete (RC) blocks and subjected to various cyclic loading scenarios. Parameters such as the stress range, peak cyclic stress level, and the corresponding number of cycles prior to failure were noted. The results were used to generate an S-N curve relationships. A finite element model was developed and calibrated based on the experimental results. Good correlation was achieved between the experimental and FE results in relation to the maximum number of cycles, strain distribution, and mode of failure. The outcomes of this study showed that no fatigue degradation was observed when the peak cycling stress level was less than 60% of the ultimate static capacity. Further details of the results and recommendations for future research work are also provided.
Název v anglickém jazyce
Numerical and experimental investigation into the fatigue life of FRP bonded to concrete and anchored with bidirectional fabric patches
Popis výsledku anglicky
Although extensive research has been conducted into the use of fibre reinforced polymers (FRPs) in strengthening of concrete structures under static loads, their fatigue behaviour when subjected to cyclic loading still requires investigation. The issue of fatigue performance of FRP strengthening systems is mostly relevant to the strengthening of concrete bridges which are subjected to significant traffic loading cycles throughout their lifetime. In order to offset some of the shortcomings of externally bonded FRPs, anchorage systems are commonly used in bridge strengthening applications in conjunction with FRPs externally bonded to concrete in order to mitigate premature debonding failure. This paper presents a summary of numerical and experimental investigations conducted to evaluate the fatigue performance of externally-bonded FRP laminates anchored with bidirectional fibre patch anchors. The anchored laminates were bonded to reinforced concrete (RC) blocks and subjected to various cyclic loading scenarios. Parameters such as the stress range, peak cyclic stress level, and the corresponding number of cycles prior to failure were noted. The results were used to generate an S-N curve relationships. A finite element model was developed and calibrated based on the experimental results. Good correlation was achieved between the experimental and FE results in relation to the maximum number of cycles, strain distribution, and mode of failure. The outcomes of this study showed that no fatigue degradation was observed when the peak cycling stress level was less than 60% of the ultimate static capacity. Further details of the results and recommendations for future research work are also provided.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20101 - Civil engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/7D17001" target="_blank" >7D17001: BIM - based Cyber-physical System for Bridge Assessment</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Engineering Structures
ISSN
0141-0296
e-ISSN
1873-7323
Svazek periodika
239
Číslo periodika v rámci svazku
112335
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
14
Strana od-do
—
Kód UT WoS článku
000657382400001
EID výsledku v databázi Scopus
2-s2.0-85104335162