Prestress evaluation in prestressed concrete plate-like structures

Pathirage, Thisara S. and Chan, Tommy H. T. and Thambiratnam, David P. and Nguyen, Andy and Moragaspitiya, H. N. P. (2018) Prestress evaluation in prestressed concrete plate-like structures. International Journal of Lifecycle Performance Engineering, 2 (3/4). pp. 127-143. ISSN 2043-8648

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Condition assessment and capacity evaluation of existing structures using their vibration responses has been subjected to extensive research for many years. Prestressed concrete structures have been one of the main focuses of those studies. In the case of prestressed concrete structures, effective prestress force is the most important parameter for their best performance and yet currently there is no effective method in identifying the prestressing force in an existing prestressed concrete structure. Effect of prestress is different for different types of structural elements and has to be treated accordingly for its accurate quantification. This paper presents a new approach to evaluate the effective prestress force of plate-like structures with simply supported boundary conditions using their vibration responses. The proposed method quantifies the prestress effect with a reasonable good accuracy, even with noisy measurements using both periodic and impulsive excitations. Prestress estimation can be done using collected data from as less as two measurement locations.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials
Date Deposited: 19 Dec 2018 03:07
Last Modified: 14 Jan 2019 22:53
Uncontrolled Keywords: prestressed concrete, effective prestress force, plate-like structures, vibration responses
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0913 Mechanical Engineering > 091304 Dynamics, Vibration and Vibration Control
Identification Number or DOI: 10.1504/IJLCPE.2018.094855

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