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http://dx.doi.org/10.4334/JKCI.2009.21.4.419

Investigation of Stress Changes in Concrete and Strands according to Cutting Order of the Strands in Pre-tensioned Concrete Slab  

Moon, Do-Young (Dept. of Civil, Environmental & Architectural Engineering, Korea University)
Kim, Jang-Ho (Dept. of Civil, Environmental & Architectural Engineering, Korea University)
Kim, Gyu-Seon (Korea Infrastructure Safety and Technology Corporation)
Yun, Man-Geun (Samsung C&T Corporation)
Zi, Goang-Seup (Dept. of Civil, Environmental & Architectural Engineering, Korea University)
Publication Information
Journal of the Korea Concrete Institute / v.21, no.4, 2009 , pp. 419-429 More about this Journal
Abstract
This study focuses on the effect of the cutting order of prestressing strands on the strain change in the strands and on the state of stress of concrete, experimentally and numerically. In the experiment, strain of strands and of transversal reinforcement were measured for three different cutting orders during detensioning process by using flame-cutting procedure. The experimental results were compared with those obtained from the FE analysis. As a results of the experiment, it is confirmed that the cutting order of prestressing strands affected on the strain of strands as well as of transversal reinforcement. The FE analysis gave similar results to those obtained from the experiment. Therefore, the cutting order should be chosen appropriately to when the strands get detensioned.
Keywords
pretension; flame cut; cutting order; prestressing strand; detensioning;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Barnes, R. W., Grove, J. W., and Burns, N. H., “Experimental Assessment of Factors Affecting Transfer Length,” ACI Structural Journal, Vol. 100, No. 6, 2003, pp. 740-748
2 Chen, H. L. and Wissawapaisal, K., “Measurement of Tensile Forces in a Seven-Wire Prestressing Strand using Stress Waves,” Journal of Engineering Mechanics, Vol. 127, No. 6, 2001, pp. 599-606   DOI   ScienceOn
3 최영철, “Cracking and Ultimate Behavior of Transversely Prestressed Concrete Box Girder Bridges,” 서울대학교, 박사학위논문, 2005, pp. 1-5
4 Nanni, A., Tanigaki, M., and Hasuo, K., “Bond Anchorage of Pretensioned FRP Tendon at Force Release,” Journal of Structural Engineering, Vol. 118, No. 10, 1992, pp. 2837-2854   DOI
5 신현양, 히로시 오카모토, 박경래, 이충희, “인천대교 FSLM 콘크리트 대블럭 박스 거더 제작 및 가설,” 콘크리트학회지, 19권, 3호, 2007, pp. 31-37   과학기술학회마을
6 지광습, 김장호, 김규선, “프리텐션 콘크리트 구조물의 디텐셔닝 거동,” 한국콘크리트학회, 가을학술발표회 논문집, 19권, 2호, 2007, pp. 181-184
7 Mirza, J. F. and Tawfik, M. E., “End Cracking in Prestressed Members during Detensioning,” PCI Journal, Vol. 23, No. 2, 1978, pp. 66-78
8 Steinberg, E., Beier, J. T., and Sargand, S., “Effects of Sudden Prestress Force Transfer in Pretensioned Concrete Beams,” PCI Journal, Vol. 46, No. 1, 2001, pp. 640-675
9 문도영, 김장호, 지광습, 김규선, 윤만근, 박경래, “프리텐션 부재의 긴장재 용접 절단순서에 따른 콘크리트 응력 고찰에 관한 연구,” 한국콘크리트학회, 봄학술발표회논문집, 20권, 1호, 2008, pp. 341-344
10 Stone, W. C. and Breen, J. E., “Behavior of Post-Tensioned Girder Anchorage Zones,” PCI Journal, Vol. 29, No. 1, 1984, pp. 64-109   DOI
11 Oh, B. H. and Kim, E. S., “Realistic Evaluation of Transfer Lengths in Pretensioned, Prestressed Concrete Members,” ACI Structural Journal, Vol. 97, No. 6, 2000, pp. 821-830
12 Russell, B. W. and Burns, N. H., “Measurement Transfer Lengths of 0.5 and 0.6 in. Strands in Pretensioned Concrete,” PCI Journal, Vol. 41, No. 5, 1996, pp. 44-65
13 Kannel, J., French, C., and Stolarski, H., “Release Methodology of Strands to Reduce End Cracking in Pretensioned Concrete Girders,” PCI journal, Vol. 42, No. 1, 1997, pp. 42-54
14 오병환, 김의성, “프리텐션 프리스트레스트 콘크리트 부재의 전달길이 평가 및 영향 인자 연구,” 대한토목학회논문집, 20권, 6A호, 2000, pp. 945-956
15 오병환, 임시내, 최영철, “프리텐션 PSC부재의 전달길이 해석 및 예측에 관한 연구,” 콘크리트학회 논문집, 16권, 3호, 2004, pp. 293-302   과학기술학회마을   DOI
16 김장호, 문도영, 지광습, 김규선, “긴장재 절단에 따른 프리텐션 부재의 동적 거동 고찰,” 대한토목학회 논문집, 28권, 5A호, 2008, pp. 747-756
17 김장호, 문도영, 지광습, 김규선, 박경래, “용접 절단에 의한 긴장력 도입 방법이 프리텐션 부재의 콘크리트 응력에 미치는 영향 분석,” 한국전산구조공학회, 정기학술대회 논문집, 21권, 1호, 2008, pp. 368-373   과학기술학회마을