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首页> 外文期刊>Magazine of Concrete Research >Torsional behaviour of prestressed concrete girder with precast box segments
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Torsional behaviour of prestressed concrete girder with precast box segments

机译：预制箱形节段预应力混凝土梁的扭转性能

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摘要

In this paper, various splicing methods for prestressed precast concrete members are suggested and examined through tests. Five specimens were manufactured including a monolithic girder in order to evaluate their torsional capacity. The spliced specimens consisted of two hollow segments into which steel box tubes were inserted. All specimens were prestressed and spliced using splice sleeves. Shear keys were applied to three of them. Crack patterns, failure modes, load-strain relations and moment-rotational angle relations were compared in order to evaluate torsional performance of the specimens. When the maximum torsional moment was applied, no separation of the connection occurred in the specimen in which steel tubes of both segments were welded, whereas separation occurred in the specimens in which one end of the steel tube was inserted into the other larger steel tube. The specimen SGW to which welding the steel tubes and prestressing were applied had approximately 77% torsional moment capacity compared with the monolithic specimens and around five times the angle of twist compared with the other spliced specimens.
机译：本文提出了多种预应力预制混凝土构件的拼接方法，并通过测试进行了研究。制造了五个样品，包括整体式梁，以评估其扭转能力。拼接的标本由两个空心段组成，在其中插入了钢管箱管。所有标本都经过预应力处理，并使用拼接套管进行拼接。剪切键应用于其中三个。比较了裂纹模式，破坏模式，载荷-应变关系和力矩-旋转角度关系，以评估试样的扭转性能。当施加最大扭转力矩时，在两个段的钢管被焊接的样本中，连接没有发生分离，而在钢管的一端插入另一根较大的钢管的样本中，没有发生连接的分离。与整体式试样相比，施加钢管焊接和预应力的试样SGW的扭转力矩能力约为77％，与其他拼接试样相比，扭转角约为扭转角的五倍。

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  • 来源
    《Magazine of Concrete Research》 |2014年第12期|576-584|共9页
  • 作者

    Min Sook Kim; Andrew Scanlon; Joowon Kanq; Young Hak Lee;

  • 作者单位

    Department of Architectural Engineering, Kyung Hee University, Yongin, Korea;

    Department of Civil Engineering, The Pennsylvania State University, University Park, PA, USA, Department of Architectural Engineering, Kyung Hee University, Yongin, Korea;

    School of Architecture, Yeungnam University, Gyeongsan, Korea;

    Department of Architectural Engineering, Kyung Hee University, Yongin, Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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