軸力, 曲げ/せん断, 及びねじりの複合荷重を同時に受けるRC部材の耐震性能と相関特性  [in Japanese] SEISMIC PERFORMANCE AND CORRELATION CHRACTERISTICS OF REINFORCED CONCRETE COLUMNS SUBJECTED TO TORSIONAL MOMENT, BENDING MOMENT/SHEAR FORCE AND AXIAL FORCE  [in Japanese]

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Abstract

本研究は, 軸力, 曲げ/せん断及びねじりの複合荷重を同時に受けるRC部材の耐震性能を把握し, その履歴復元力特性や相関特性を得ることを目的として行った. 供試体は, 一般的なRC橋脚をモデルとして, 400×400×1600 (mm) の模型供試体を制作した. パラメータは軸力, 帯鉄筋間隔, ねじりと曲げモーメントの載荷比率とした. 軸力は0, 2, 4MPa (配合強度の0, 5, 10%) とした. また, 帯鉄筋間隔は30mmと60mm (それぞれ帯鉄筋比1.16%, 0.58%) の2通りとした. さらに, ねじりと曲げモーメントの載荷比率は, ねじり卓越型 (ΔM<sub>t</sub>/ΔM<sub>b</sub>=1.7), 中間型 (ΔM<sub>t</sub>/ΔM<sub>b</sub>=1.0), 曲げ卓越型 (ΔM<sub>t</sub>/ΔM<sub>b</sub>=0.6) の3パターンの実験を行った. その結果より, 履歴復元力特性と相関特性に着目し考察を行った.

Seismic performance and correlation characteristics of reinforced concrete columns subjected to torsional moment, bending moment and axial force are clarified by experimental research. Interaction curves among those three sectional forces, which are necessary in nonlinear time history analysis, have not been proposed yet.<br>In this study 25 specimens with different rate of bending and torsional moments, pitch of hoop reinforcement are tested by newly developed loading system. The test specimen has 400<sup>*</sup>400 mm cross section and 1600 mm length. The axial force is 0,5,10% of concrete compressive strength, i.e. 0,2,4 MPa. Pitches of hoop reinforcement are 30mm and 60mm. (volume ratios are 1.16% and 0.58% respectivily). Types of loading are pure bending, pure torsion and combined loading of bending moment and torsional moment. Bending and torsional moments are cyclic loadings, but axial forces are maitained to be constant during test.

Journal

  • Doboku Gakkai Ronbunshu

    Doboku Gakkai Ronbunshu (801), 123-139, 2005-10-21

    Japan Society of Civil Engineers

References:  12

Cited by:  2

Codes

  • NII Article ID (NAID)
    10016376736
  • NII NACSIS-CAT ID (NCID)
    AN10014020
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    02897806
  • NDL Article ID
    7480912
  • 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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