Abstract
This study investigates the feasibility of smart aggregate (SA) sensors and their optimal locations for impedance-based damage monitoring in prestressed concrete (PSC) anchorage zones. Firstly, numerical stress analyses are performed on the PSC anchorage zone to determine the location of potential damage that is induced by prestressing forces. Secondly, a simplified impedance model is briefly described for the SA sensor in the anchorage. Thirdly, numerical impedance analyses are performed to explore the sensitivities of a few SA sensors in the anchorage zone under the variation of prestressing forces and under the occurrence of artificial damage events. Finally, a real-scale PSC anchorage zone is experimentally examined to evaluate the optimal localization of the SA sensor for concrete damage detection. Impedance responses measured under a series of prestressing forces are statistically quantified to estimate the performance of damage monitoring via the SA sensor in the PSC anchorage.
Highlights
This study aims to investigate the feasibility of smart aggregate (SA) sensors and their optimal locations for impedance-based damage monitoring in prestressed concrete (PSC) anchorage zones
This study focused on investigating the feasibility of SA sensors and their optimal locations for damage monitoring in the anchorage
The numerical stress analyses were performed on the PSC anchorage to determine potential damage locations induced by a series of prestressing forces
Summary
This study investigates the feasibility of smart aggregate (SA) sensors and their optimal locations for impedance-based damage monitoring in prestressed concrete (PSC) anchorage zones. Numerical stress analyses are performed on the PSC anchorage zone to determine the location of potential damage that is induced by prestressing forces. The prestressed concrete (PSC) structure has a higher loading capacity, thinner body, and more crack-resistance performance than the traditional reinforced concrete structure. These prominent characteristics are generated via the support of internal force that is induced by the prestressing force, which is transferred into the concrete domain by the anchorage zone [1,2,3].
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