QUALITATIVE EVALUATION OF EARTHQUAKE-DAMAGED RC PIERS

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  • 詳細調査に基づく被災RC橋脚損傷度の定量的評価
  • ショウサイ チョウサ ニ モトヅク ヒサイ RC キョウキャク ソンショウド ノ テイリョウテキ ヒョウカ

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Abstract

Detailed investigation was performed on the RC piers on the Hanshin Expressway Kobe Route which were damaged by the Great Hanshin Earthquake. Using these data, the relationship between the damage level and the ultimate bearing capacity was examined. Results showed that 72 piers ranked as As and A, all had reinforcement cut-off and sustained damage at this point. It was also showed that the average shear capacity index of these piers was smaller than that of piers which were ranked below B1. It was also found that 11 piers ranked As and A had no reinforcement cut-off, but failed at the middle section. These piers tend to have small values for the ratio of shear capacity vs. moment capacity and the shear capacity index.

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