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Title |
Load Transfer Test for Re-tensioning Post-Tension Kit for Prestressed Concrete
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Authors |
허재훈(Jae-Hoon Hur) ; 노병철(Byeong-Cheol Lho) |
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DOI |
https://doi.org/10.11112/jksmi.2021.25.5.8 |
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Abstract |
Post-tensioned prestressed concrete members experience immediate prestress losses as well as time-dependent prestress losses such as creep, dry shrinkage and relaxation. In addition, the stress of the upper and lower parts of the member changes due to the change in dead load due to the replacement of the upper slab and/or pavement. Such changes in fiber stress may affect the safety of the member, and it is necessary to adjust the prestressing force. Therefore, in this study, a srew type of re-tensioning post-tension kit is proposed, and it is verified that the safety against load and the stability against strain are satisfied through the load transfer test specified in EAD160004 and KCI-PS101.
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