高速度の三軸圧縮載荷を受ける鋼繊維補強高強度モルタルの動的挙動とその特性モデル  [in Japanese] DYNAMIC PROPERTEIES AND ITS CONSTLTUTIVE MODEL OF STEEL FIBER RENIFORCED HIGH-STRENGTH MORTAR UNDER TRIAXIAL RAPID COMPRESSIVE LOADS  [in Japanese]

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Abstract

衝撃荷重を受ける鉄筋コンクリート構造物に圧縮強度が100 (N/mm<sup>2</sup>) を超えるような鋼繊維補強高強度コンクリートの適用を検討するためには, 高ひずみ速度・三軸応力下における鋼繊維補強高強度コンクリートの力学的特性を把握することが重要である. そこで本研究では, 繊維補強高強度モルタル供試体の鋼繊維の混入率, 側圧ならびに載荷速度をパラメータとする急速三軸圧縮載荷試験を行い, これらのパラメータが多軸応力下における繊維補強高強度モルタルの力学的性状に及ぼす影響を定性的・定量的に調べている. また, 有限要素解析法に組み込んで使用できるひずみ速度効果を考慮した直交異方性構成モデルの定式化を行っている.

To assess the application of steel fiber reinforced high-strength concrete with compressive strength of over 100 (N/mm<sup>2</sup>) in RC structures subjected to impact/impulsive loads, the dynamic mechanical properties of steel fiber reinforced high-strength concrete under high strain-rates and triaxial stress states are essential. Thus, this study is to investigate the behavior of steel fiber reinforced high-strength mortar subjected to high strain-rates and triaxial stresses. The volume fraction of steel fibers, the confining pressure and the loading rate are chosen as test parameters. From test results, the effects of these parameters on the mechanical properties of steel fiber reinforced high-strength mortar are examined. Furthermore, based on the concept of the equivalent uniaxial strain, the orthotropic constitutive model with the strain-rate effects is proposed.

Journal

  • Doboku Gakkai Ronbunshu

    Doboku Gakkai Ronbunshu 704, 37-53, 2002-05-20

    Japan Society of Civil Engineers

References:  12

Cited by:  1

Codes

  • NII Article ID (NAID)
    10008534604
  • NII NACSIS-CAT ID (NCID)
    AN10014020
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    02897806
  • NDL Article ID
    6177801
  • NDL Source Classification
    ZN1(科学技術--建設工学・建設業)
  • NDL Call No.
    Z16-6
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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