1995年兵庫県南部地震時の神戸市西部地区に建つ高層SRC造建物への入力地震動評価

  • 永野 正行
    東京理科大学理工学部建築学科 教授・博士(工学)
  • 趙 建菁
    東京理科大学大学院 修士課程

書誌事項

タイトル別名
  • EVALUATION OF INPUT EARTHQUAKE MOTION TO THE HIGH-RISE SRC BUILDING IN THE WESTERN PART OF KOBE CITY DURING THE 1995 HYOGO-KEN NANBU EARTHQUAKE
  • 1995ネン ヒョウゴケン ナンブ ジシンジ ノ コウベシ セイブ チク ニ タツ コウソウ SRCゾウ タテモノ エ ノ ニュウリョク ジシンドウ ヒョウカ

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抄録

During the 1995 Hyogo-ken Nanbu earthquake, strong motions were recorded at two neighboring sites, Takatori (TKT) and Shin-Nagata (SNT), located in the western part of the damage belt in Kobe City. The latter, observed at the basement of a high-rise building, was less than half the amplitude recorded at TKT. This difference has gone unresolved in terms of the relationship between ground motion level and actual damage situation. This study investigate input earthquake motion to the high-rise SRC building at SNT during the 1995 Hyogo-ken Nanbu earthquake using three approaches: (1) a 3-D finite difference method to elucidate the spatial variation considering both the seismic fault and the 3-D basin-edge structure, (2) amplification characteristics using recorded motions after the 1995 Hyogo-ken Nanbu earthquake at SNT, and (3) the foundation input motion analysis, taking into account the strong nonlinearity of the surrounding surface soil.

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