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Damage Tendency of Public School Buildings in Ibaraki Prefecture Suffered in 2011 Off The Pacific Coast of Tohoku Earthquake

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Other Title
  • 2011 年東北地方太平洋沖地震における茨城県内の公立学校建物の被害傾向

Abstract

The objective of this study is to clarify the damage tendency of the public school buildings in Ibaraki Prefecture.The database of damages and the results of seismic inspections is made out through the questionnaire survey for 45 governing bodies, and data of 3,148 buildings has been collected. The distribution of seismic capacity index IS of RC and S buildings designed under the fomer laws is close to the form of log-normal distribution. The damage data of 2,834 buildings which were received from the governing bodies, these damage summaries show that the damage ratio of glass, ceiling, wall and EXP.J is larger in the 1st period (constructed before and in 1971) buildings.Meanwhile, the buildings of the 3rd period (constructed after1981) have slighter damage ratio. According to the damage evaluation results of 287 old standard buildings, for the RC buildings which values of IS are bigger than 0.6, the mid-damage is almost not observed. The lower limit of the residual ratio R decreases as the values of JMA seismic intensity, PGV and SI increase.

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Details

  • CRID
    1390001205358140800
  • NII Article ID
    130004962755
  • DOI
    10.5610/jaee.14.2_164
  • ISSN
    18846246
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles

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