CAUSES OF SHOWA BRIDGE COLLAPSE IN THE 1964 NIIGATA EARTHQUAKE BASED ON EYEWITNESS TESTIMONY

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概要

• 論文の詳細を見る

• Testimony from eyewitnesses of the Showa Bridge collapse was collected with the objective of pinning down the cause of the collapse. On the basis of this testimony, a chronology of events was established. The bridge collapsed about 70 seconds from the beginning of the earthquake, i.e., long after the strong shock. The liquefaction-induced flow occurred after the collapse of the bridge. By studying these times of occurrence, as well as observed earthquake records, the cause of the Showa Bridge collapse was deduced. The possibility of inertia force in the superstructure and liquefaction-induced flow is low as the main cause of the collapse of the Showa Bridge. There is a high possibility that it was due to increased displacement of the ground in circumstances where pile deformation occurred more easily due to liquefaction.

• 社団法人地盤工学会の論文

著者

• Towhata Ikuo

  Department Of Civil Engineering The University Of Tokyo

• Yasuda Susumu

  Department Of Civil And Environmental Engineering Tokyo Denki University

• NAKAZAWA HIROSHI

  Port and Airport Research Institute (PARI)

• YOSHIDA NOZOMU

  Tohoku Gakuin University

• TAZOH TAKASHI

  Shimizu Corporation

• WAKAMATSU KAZUE

  National Research Institute for Earth Science and Disaster Prevention

• YASUDA SUSUMU

  Tokyo Denki University

• TOWHATA IKUO

  The University of Tokyo

• KIKU HIROYOSHI

  Kanto Gakuin University

• Kiku Hiroyoshi

  Kanto Gakuin Univ. Jpn

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