다단 타설 긴장식 PSC 거더의 개발Development of Concrete Girders Placed and Prestressed in Multiple Stage

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A new design method for prestressed concrete girder is proposed in this study, which steps for manufacturing are; (1) the bottom part of concrete girder is placed and pretensioned by the first post-tensioning performed on the tendons located in the bottom part of concrete girder, and (2) the next step which consists of concrete placing and post-tensioning operation is followed by the previous step if required. This indicates that sufficient compressive stress can be effectively introduced at the bottom face in stepwise manner, when compared to conventional PSC girder. Two specimens are prepared and tested to investigate the short-term behavior of the PSC girders manufactured by the proposed method. Section Analysis results exhibit good agreements with the test results in terms of strain distribution across the girder section. In addition, flexural strength obtained from the tests is found to be similar to the expected based on Code(Korea). These demonstrate that the method proposed in this study is applicable to the design of PSC girders.
Publisher
한국콘크리트학회
Issue Date
2004-05
Language
KOR
Citation

2004 한국콘크리트학회 봄 학술대회, pp.40 - 43

URI
http://hdl.handle.net/10203/153006
Appears in Collection
CE-Conference Papers(학술회의논문)
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