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Finite Element Analysis of Transfer Length in Pretensioned Prestressed Concrete Members
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 Title & Authors
Finite Element Analysis of Transfer Length in Pretensioned Prestressed Concrete Members
Oh Byung-Hwan; Lim Si-Nae; Choi Young-Cheol;
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The transfer of prestress force in pretensioned prestressed concrete (PSC) members is of great concern because it affects directly the distribution of stress around the transfer zone. The design provision of current design code on the transfer length considers only the prestress intensity and the diameter of prestressing steels. However, other factors such as concrete compressive strength and concrete cover may affect greatly the transfer length. The purpose of the present paper is to explore the various factors that affect the transfer length in pretensioned PSC members. The bond stress-slip relation between prestressing steel and concrete was modeled first from experimental data and then this model was incorporated into the interface element. The interface element was used to perform the finite element analysis for pretensioned PSC members. The results indicate that the compressive strength and concrete cover are also very important parameters which affect the transfer length greatly. This means that the current design code, which considers only the effective prestress and diameter of prestressing steel, must be improved to take into account the other important variables of compressive strength and concrete cover. The present study allows more realistic analysis and design of pretensioned PSC members.
transfer length;pretensioned prestressed concrete member;bond-slip relationship;finite element analysis;compressive strength;
 Cited by
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프리텐션 슬래브 구조에서 긴장강선 용접절단순서에 따른 긴장재 및 콘크리트의 응력변화 고찰,문도영;김장호;김규선;윤만근;지광습;

한국콘크리트학회논문집, 2009. vol.21. 4, pp.419-429 crossref(new window)
프리텐션 방식의 PSC 거더 이동식 제작장치 개발에 관한 실험적 기초연구,이규세;윤기용;김종석;김용혁;

한국방재학회 논문집, 2011. vol.11. 6, pp.61-66 crossref(new window)
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한국방재학회 논문집, 2011. vol.11. 6, pp.77-82 crossref(new window)
Estimation of transfer lengths in precast pretensioned concrete members based on a modified thick-walled cylinder model, Structural Concrete, 2016, 17, 1, 52  crossref(new windwow)
A Study on Buckling Analysis of Portable Prestressing Device for Pretensioning PSC girders, Journal of the Korea Academia-Industrial cooperation Society, 2012, 13, 1, 419  crossref(new windwow)
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