RESTORATION WORKS OF SEISMICALLY DAMAGED RIVER DIKES USING REMEDIAL TREATMENT OF LIQUEFIABLE LAYER

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  • 液状化により被災した河川堤防の地盤改良を併用した復旧
  • エキジョウカ ニ ヨリ ヒサイ シタ カセン テイボウ ノ ジバン カイリョウ オ ヘイヨウ シタ フッキュウ

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Abstract

This paper describes about post earthquake investigation to clarify the failure mechanisms on three cases of river dike failure caused by recently occurred Kushiro-oki, Hokkaido Nansei-oki, and Hyogoken-nanbu earthquakes. The change of policy on rehabilitation works of seismically damaged dikes was also presented through the description on the modification of technical standards on river dike construction.<br>Restoration works of civil engineering structures damaged by earthquakes have long been conducted in a manner to rebuild as they were before the earthquakes. No remedial measure was admitted for restoration works due to financial constraint. However after the case of restoration works of damaged dikes by the Kushiro-oki earthquake, it became to conduct remedial treatment of foundation ground if necessary.

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