Pipelines 2019
A Comparison of Computational and Experimental Results of 54-Inch PCCP Repaired with Carbon Fiber Reinforced Polymer under Live Load
Publication: Pipelines 2019: Condition Assessment, Construction, and Rehabilitation
ABSTRACT
Carbon fiber reinforced polymer (CFRP) has been widely used for the repair of damaged prestressed concrete cylinder pipe (PCCP) in the last ten years. There is some uncertainty regarding the long-term performance of CFRP repair under internal and external loading conditions. This study provides experimental and computational data regarding the performance of CFRP repair for the damaged 54-inch PCCP under external loading. The CFRP repair was installed in 2012 and the pipe was tested under a 328D excavator which moves on two tracks and exert 320 psi downward force in 2016. External experimental live load data was gathered as the as a result of the 328D excavator pass over the pipe for approximately 2.5 hours at a sample rate of 10 Hz. Strain gauges were installed on the inside surface of the CFRP repair site at the middle of the pipe and close to the joint. Hoop and longitudinal strains were measured at four locations on each cross section (12, 3, 6, and 9 o’clock positions) during a series of load events. The main objective of this study is to provide computational and experimental data, particularly for the level of strain created in both longitudinal and circumferential directions under live load events using 328D excavator load. This study provide a better understanding of short term behavior of CFRP repair using computational and experimental data which could be used for adjusting the margin of safety for the design.
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Information & Authors
Information
Published In
Pipelines 2019: Condition Assessment, Construction, and Rehabilitation
Pages: 177 - 186
Editors: Jeffrey W. Heidrick, Burns & McDonnell and Mark S. Mihm, HDR
ISBN (Online): 978-0-7844-8249-0
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Jul 18, 2019
Published in print: Jul 18, 2019
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