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Nonlinear Analysis of Prestressed Concrete Containment Structures Considering Slip Behavior of Tendons  

Kwak Hyo-Gyoung (한국과학기술원 건설환경공학과)
Kim Jae-Hong (한국과학기술원 건설환경공학과)
Kim Sun-Hoon (영동대학교 토목환경공학과)
Chung Yun-Suk (한국원자력안전기술원)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.18, no.4, 2005 , pp. 335-345 More about this Journal
Abstract
This paper concentrates on the nonlinear analysis of prestressed concrete (PSC) containment structures. Unlike a commercialized program which adopts the perfect bond assumption between concrete and tendon in the analysis of PSC structures, a numerical algorithm to consider the slip effect, simultaneously with the use of commercialized programs such as DIANA and ABAQUS, is introduced in this paper For bonded tendons, the apparent yield stress of an embedded tendon is determined from the bond slip relationship. And for unbonded tendons, Correction for the strength and stiffness of unbonded internal tendons is achieved on the basis of an iteration scheme derived from the slip behavior of tendon along the entire length. Finally, the developed algorithm is applied to two PSC containment structures of PWR and CANDU to verify its efficiency and applicability in simulating the structural behavior of large complex structures, and the obtained result shows that both containment structures represent the ultimate pressure capacity larger than about 3 times of the design pressure.
Keywords
containment structure; ultimate pressure capacity; nonlinear analysis; tendon;
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