FAILURE MECHANISM OF COLUMN-FOOTING JOINTS DUE TO THE EARTHQUAKE LOAD

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  • KOSA Kenji
    社団法人 土木学会 九州工業大学 建設社会工学科
  • ANDO Takashi
    社団法人 土木学会 阪神高速道路公団 神戸建設局有野工事事務所
  • SHIRATO Masato
    社団法人 土木学会 (独) 土木研究所 構造グループ
  • MIZUTA Kazuyuki
    社団法人 土木学会 新構造技術大阪支店

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  • 地震時における柱・フーチング接合部の損傷メカニズムに関する研究
  • ジシンジ ニ オケル ハシラ フーチング セツゴウブ ノ ソンショウ メカニズム ニ カンスル ケンキュウ

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Abstract

To investigate the behavior of footing under seismic loading, three 1/3 scale monolithic specimens composed of a pier, a footing, and piles were constructed, and they were loaded by the montonic loading procedure, using the shear span ratio and reinforcement ratio in the footing as the parameters. According to the test results, dominating damage was the damage at the connection up to the maximum load regardless of the difference in the shear span ratio(a/d). Shear failure was occurred by the lateral force acting to the pile and column, after the main reinforcement was yielded.

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