地盤ひずみと地盤粒子速度との関連についての地震記録に基づく一考察  [in Japanese] AN EXAMINATION OF THE RELATIONSHIP BETWEEN SURFACE GROUND STRAIN AND VELOCITY INDUCED BY EARTHQUAKE  [in Japanese]

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Abstract

地震時に生ずる地表面での地盤ひずみと地盤粒子速度との関連について実測記録を基に調査した. ひずみ振幅と速度振幅の関係を見出すには, 観測資料の蓄積を必要とする. 双方の時刻歴の関連について調べるために, 2ヶのひずみ不変量の各々と3成分合成速度の時間変動を1/100秒毎に比較検討した. ひずみ不変量の絶対値が時刻歴で極大のとき, 地盤の正弦振動状態では合成速度は極小となり, また正弦波動伝播状態では極大を示す. 本解析では, 継続時間内で約半数の時刻で振動状態を, 残りの時刻で波動状態を示すこととなり, 双方の時刻歴間の明瞭な関係は得られなかった.

The relationship between surface ground strain records and ground motion velocity records is examined. More records than observed in this study are needed to obtain a credible relationship between strain amplitude and velocity. As for the relationship between time history of strain and that of velocity, the time variation of two strain invariants and that of resultant velocity are compared at interval of 1/100 second. When the absolute value of strain invariant showed a peak value in time history, the resultant velocity showed a minimum during sinusoidal vibration and showed a peak value during wave propagation. According to the analysis, the state of sinusoidal vibration and wave propagation appeared respectively in about half of the measurement. Therefore, the relationship between time history of strain and that of velocity was not clalified.

Journal

  • Doboku Gakkai Ronbunshu

    Doboku Gakkai Ronbunshu 703, 345-350, 2002-04-21

    Japan Society of Civil Engineers

References:  3

Codes

  • NII Article ID (NAID)
    10008220180
  • NII NACSIS-CAT ID (NCID)
    AN10014020
  • Text Lang
    JPN
  • Article Type
    NOT
  • ISSN
    02897806
  • NDL Article ID
    6155795
  • NDL Source Classification
    ZN1(科学技術--建設工学・建設業)
  • NDL Call No.
    Z16-6
  • Data Source
    CJP  NDL  J-STAGE 
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