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A platform for research: civil engineering, architecture and urbanism
Torsional behavior of GFRP-reinforced concrete pontoon decks with and without an edge cutout
https://orcid.org/0000-0002-9446-5436
Abstract Using glass fiber-reinforced polymer (GFRP) bars in precast concrete pontoon decks in aggressive marine environments would eliminate corrosion problems encountered with steel reinforcement. Although wave action usually subjects pontoon decks to torsion, but little is known about the behavior of such structures. Moreover, nothing is known about the effects of cutouts on the torsional behavior of pontoon decks. This study experimentally investigated the torsional behavior of GFRP-reinforced concrete (RC) pontoon decks in terms of the effect of edge cutouts, reinforcement-bar distribution, and rotation direction. The results show that the bar configuration affected the failure behavior and torsional capacity of the GFRP-reinforced concrete decks under torsion. The decks with double-layer reinforcement exhibited slower and narrower cracking growth in the post-cracking stage than the decks with single-layer reinforcement. In addition, the edge cutouts reduced the cracking torque of the solid rectangular decks by an average 17%. The torsional behavior of the GFRP-reinforced planks can be accurately described by the ACI318-14 equation in the cracking stage, while the decks’ post-cracking torsional rigidity can be predicted accurately from the contribution of the GFRP bars.
Highlights A novel and new design of GFRP-reinforced concrete pontoon decks is presented. Influence of edge cutouts, reinforcement-bar distribution, and rotation direction are studied. Failure behaviour, torsional capacity and rigidity, and strain development are presented. Lateral “through-length” rotation was studied using DIC. Unique analytical formula was developed to predict the post torsional rigidity.
Torsional behavior of GFRP-reinforced concrete pontoon decks with and without an edge cutout
https://orcid.org/0000-0002-9446-5436
Abstract Using glass fiber-reinforced polymer (GFRP) bars in precast concrete pontoon decks in aggressive marine environments would eliminate corrosion problems encountered with steel reinforcement. Although wave action usually subjects pontoon decks to torsion, but little is known about the behavior of such structures. Moreover, nothing is known about the effects of cutouts on the torsional behavior of pontoon decks. This study experimentally investigated the torsional behavior of GFRP-reinforced concrete (RC) pontoon decks in terms of the effect of edge cutouts, reinforcement-bar distribution, and rotation direction. The results show that the bar configuration affected the failure behavior and torsional capacity of the GFRP-reinforced concrete decks under torsion. The decks with double-layer reinforcement exhibited slower and narrower cracking growth in the post-cracking stage than the decks with single-layer reinforcement. In addition, the edge cutouts reduced the cracking torque of the solid rectangular decks by an average 17%. The torsional behavior of the GFRP-reinforced planks can be accurately described by the ACI318-14 equation in the cracking stage, while the decks’ post-cracking torsional rigidity can be predicted accurately from the contribution of the GFRP bars.
Highlights A novel and new design of GFRP-reinforced concrete pontoon decks is presented. Influence of edge cutouts, reinforcement-bar distribution, and rotation direction are studied. Failure behaviour, torsional capacity and rigidity, and strain development are presented. Lateral “through-length” rotation was studied using DIC. Unique analytical formula was developed to predict the post torsional rigidity.
Torsional behavior of GFRP-reinforced concrete pontoon decks with and without an edge cutout
https://orcid.org/0000-0002-9446-5436
Abstract Using glass fiber-reinforced polymer (GFRP) bars in precast concrete pontoon decks in aggressive marine environments would eliminate corrosion problems encountered with steel reinforcement. Although wave action usually subjects pontoon decks to torsion, but little is known about the behavior of such structures. Moreover, nothing is known about the effects of cutouts on the torsional behavior of pontoon decks. This study experimentally investigated the torsional behavior of GFRP-reinforced concrete (RC) pontoon decks in terms of the effect of edge cutouts, reinforcement-bar distribution, and rotation direction. The results show that the bar configuration affected the failure behavior and torsional capacity of the GFRP-reinforced concrete decks under torsion. The decks with double-layer reinforcement exhibited slower and narrower cracking growth in the post-cracking stage than the decks with single-layer reinforcement. In addition, the edge cutouts reduced the cracking torque of the solid rectangular decks by an average 17%. The torsional behavior of the GFRP-reinforced planks can be accurately described by the ACI318-14 equation in the cracking stage, while the decks’ post-cracking torsional rigidity can be predicted accurately from the contribution of the GFRP bars.
Highlights A novel and new design of GFRP-reinforced concrete pontoon decks is presented. Influence of edge cutouts, reinforcement-bar distribution, and rotation direction are studied. Failure behaviour, torsional capacity and rigidity, and strain development are presented. Lateral “through-length” rotation was studied using DIC. Unique analytical formula was developed to predict the post torsional rigidity.
Torsional behavior of GFRP-reinforced concrete pontoon decks with and without an edge cutout
Yang, Xian (author) / Alajarmeh, Omar (author) / Manalo, Allan (author) / Benmokrane, Brahim (author) / Gharineiat, Zahra (author) / Ebrahimzadeh, Shahrad (author) / Sorbello, Charles-Dean (author) / Weerakoon, Senarath (author)
Marine Structures ; 88
2022-11-25
Article (Journal)
Electronic Resource
English
GFRP Reinforced Concrete Brdige Decks
| NTIS | 2000
Torsional rigidity of concrete bridge decks
| Engineering Index Backfile | 1968