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논문 기본 정보

자료유형
학술저널
저자정보
Se-Jin Jeon (Ajou University) Ho Shin (Kyeryong Construction Industrial) Sang-Hyun Kim (Korea Institute of Civil Engineering and Building Technology) Sung Yong Park (Korea Institute of Civil Engineering and Building Technology) Jun-Mo Yang (Keimyung University)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.13 No.6
발행연도
2019.9
수록면
739 - 754 (16page)

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초록· 키워드

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Although pretensioned concrete structures have increasingly been used worldwide, a number of design issues need to be addressed to further improve the structural performance. Transfer length of pretensioned members was investigated with several test variables in this study by adopting various sensing technologies including the Smart Strands with embedded fiber optic sensors. The effect of increased strength in 2360 MPa high-strength strand on the transfer length was also analyzed. Representative provisions widely used in design were compared with the test results for consistency and appropriate conservatism. The strain distribution required for the transfer length depended partly on the type and location of sensors, which suggests the challenges associated with reasonable determination of the transfer length. According to the results of the analysis, the predictive equation in ACI 318 was relatively accurate and conservative under various conditions including high-strength strands. However, the transfer lengths based on the strand strains rather than the conventional surface strains of concrete require further investigation depending on the bonding behavior between the strand and the surrounding concrete inside a member. Thus, this study also introduces a new sensing technology utilizing the Smart Strand to reliably measure the strain distribution along a strand.

목차

Abstract
1. Introduction
2. Transfer Lengths in Provisions and Previous Studies
3. Fabrication of Specimens and Measurement Plan
4. Experimental Results
5. Analysis of Transfer Lengths
6. Conclusions
References

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