Temperature effect on wireless impedance monitoring in tendon anchorage of prestressed concrete girder

다국어 초록 (Multilingual Abstract)

In this study, the effect of temperature variation on the wireless impedance monitoring isanalyzed for the tendon-anchorage connection of the prestressed concrete girder. Firstly, three impedancefeatures, which are peak frequency, root mean square deviation (RMSD) index, and correlation coefficient(CC) index, are selected to estimate the effects of temperature variation and prestress-loss on impedancesignatures. Secondly, wireless impedance tests are performed on the tendon-anchorage connection for whicha series of temperature variation and prestress-loss events are simulated. Thirdly, the effect of temperaturevariation on impedance signatures measured from the tendon-anchorage connection is estimated by the threeimpedance features. Finally, the effect of prestress-loss on impedance signatures is also estimated by thethree impedance features. The relative effects of temperature variation and prestress-loss are comparativelyexamined.

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