A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Flexural behavior of CFRP precast prestressed decked bulb T-beams
This study introduces an innovative scheme of bridge superstructure for expedited construction, improved serviceability, and extended life span. The new bridge superstructure is assembled from precast prestressed decked bulb T-beams reinforced and prestressed with corrosion-free fiber-reinforced polymer (FRP) materials. An experimental investigation accompanied by analytical and numerical simulations was developed to evaluate the performance of the newly developed beams. Through the experimental investigation, three single decked bulb 7-beams were constructed and tested to failure. The first beam, served as a control beam, and was prestressed and reinforced with conventional steel strands and reinforcing bars. The second and third beams were prestressed and reinforced with carbon-fiber composite cable (CFCC) strands and carbon-fiber-reinforced polymer (CFRP) tendons, respectively. The investigation revealed that the performance of beams reinforced with CFRP tendons or CFCC strands was comparable with the performance of the control beam at both service and ultimate limit states. All three beams exhibited high load-carrying capacity with large corresponding deflection and fair amount of absorbed energy before failure. The study showed that the corrosion-free FRP-reinforced decked bulb 7-beams can be safely deployed in construction to enhance the performance and extend the life span of bridge superstructures.
Flexural behavior of CFRP precast prestressed decked bulb T-beams
This study introduces an innovative scheme of bridge superstructure for expedited construction, improved serviceability, and extended life span. The new bridge superstructure is assembled from precast prestressed decked bulb T-beams reinforced and prestressed with corrosion-free fiber-reinforced polymer (FRP) materials. An experimental investigation accompanied by analytical and numerical simulations was developed to evaluate the performance of the newly developed beams. Through the experimental investigation, three single decked bulb 7-beams were constructed and tested to failure. The first beam, served as a control beam, and was prestressed and reinforced with conventional steel strands and reinforcing bars. The second and third beams were prestressed and reinforced with carbon-fiber composite cable (CFCC) strands and carbon-fiber-reinforced polymer (CFRP) tendons, respectively. The investigation revealed that the performance of beams reinforced with CFRP tendons or CFCC strands was comparable with the performance of the control beam at both service and ultimate limit states. All three beams exhibited high load-carrying capacity with large corresponding deflection and fair amount of absorbed energy before failure. The study showed that the corrosion-free FRP-reinforced decked bulb 7-beams can be safely deployed in construction to enhance the performance and extend the life span of bridge superstructures.
Flexural behavior of CFRP precast prestressed decked bulb T-beams
Biegeverhalten vorgefertigter, vorgespannter T-Träger aus CFRP für Brückenfahrbahnen
Grace, Nabil (author) / Enomoto, Tsuyoshi (author) / Baah, Prince (author) / Bebawy, Mena (author)
Journal of Composites for Construction ; 16 ; 225-234
2012
10 Seiten, 14 Bilder, 1 Tabelle, 12 Quellen
Article (Journal)
English
Flexural Behavior of CFRP Precast Prestressed Decked Bulb T-Beams
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