護岸構造物の震害予測に関する考察

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タイトル別名
  • PREDICTION OF EARTHQUAKE DAMAGE TO QUAYWALLSTRUCTURES
  • ゴガン コウゾウブツ ノ シンガイ ヨソク ニ カンスル コウサツ

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抄録

This paper is concerned with the formulation of a simple and practical method for esti-mating the earthquake resistant powr of quaywall structures. In the first part, the factoranalysis was made with reference to some reports on damaged quaywalls during the NigataEarthquake in 1964 and the Tokachi-oki Earthquake in 1968. The result shows that thedensity or shear strength of subsoil is one of the most important factor for the earthquakedamages of structures.In the second part of this paper, the microtremor of quaywall structures were measuredat the site of Osaka harbour. In an attempt to compare these in-situ measurements withcalculations, the FE-analysis of quaywall-subsoil system was also made. As a result of suchcomparisons, it is tentatively concluded that the dynamic behaviour of simple-type quay-wall structure may be estimated by means of microtremor analysis.

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