DAMAGE RATES OF VARIOUS KINDS OF STRUCTURES EXCEPT FOR WOODEN-HOUSES IN TOKYO METROPOLIS DURING THE 1923 KANTO EARTHQUAKE AND THEIRE RELATIONSHIPS TO THE SEISMIC INTENSITY

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  • TAKEMURA Masayuki
    Earthquake Engineering & Structural Dynamics, Kobori Research Complex, Kajima Corporation

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  • 1923年関東地震による旧東京市内での各種構造物の被害の震度 : "土蔵の話"は本当か?
  • 1923年関東地震による旧東京市内での各種構造物の被害と震度--"土蔵の話"は本当か?
  • 1923ネン カントウ ジシン ニ ヨル キュウ トウキョウ シナイ デ ノ カクシュ コウゾウブツ ノ ヒガイ ト シンド ドゾウ ノ ハナシ ワ ホントウ カ

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A famous result for the damage in Tokyo Metropolis during the Kanto earthquake was that the damage rate of dozo (Japanese traditional timber storehouse coated with clay and plaster finish) is larger in the Yamanote terrace formed by diluvial deposit than that in the Shitamachi low-land by alluvial deposit, while the damage rate of wooden houses, which determined seismic intensity, was smaller in the Yamanote terrace than that in the Shitamach lowland. We re-examined the original data of dozo on the Kanto earthquake and compared with the damage data from the 1948 Fukui earthquake and the 1855 Ansei-Edo earthquake. It can be found that the original data was strongly contaminated by the damage due to fires during the Kanto earthquake, and that the result of dozo was not trusted. The damages of RC buildings and brick buildings which had almost the same natural period as dozo, were also re-examined. We could correlate weakly the damage rate of them with seismic intensity determined from the damage rate of wooden houses, which was larger on the alluvial deposit than on the diluvial deposit.

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