Study on torsion properties of carbon fiber sheet strengthened pc member

Haiming He*, Osamu Kiyomiya

*この研究の対応する著者

    研究成果: Article査読

    抄録

    In this research, carbon fiber sheet (CFS) substitute to lateral tie was used for torsional strengthening of PC member. To investigate the mechanical properties of CFS strengthened PC member subjected to torsion and torsional reinforcement effects of CFS, monotonic and cyclic torsional loading tests were carried out with specimens which strengthened by lateral ties and unreinforced specimen for comparison. From both monotonic and cyclic loading test results, it was proved that the CFS can increase the ultimate torsional capacity and cracking torque. And it was also confirmed that the CFS had sufficient reinforcement effect, and for CFS strengthened specimen, the cracks of concrete were dispersed and widths were small. Mechanical properties such as torsional rigidity retention, residual twist, resilience and ductility were excellent. As for three-dimension finite element method analysis, analysis results matched the results of monotonic loading tests well and tracked the cyclic torsional loading tests when both nonlinear properties and hysteresis properties of each material were applied. A calculation concept including torsional effective cross-sectional area and thickness of shearing flow for the torsional capacity of CFS strengthened PC member was proposed.

    本文言語English
    ページ(範囲)273-287
    ページ数15
    ジャーナルDoboku Gakkai Ronbunshuu A
    64
    2
    DOI
    出版ステータスPublished - 2008

    ASJC Scopus subject areas

    • 土木構造工学
    • 材料力学
    • 機械工学
    • 建築および建設

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