Fundamental Study on Combination of Dowel Action and Shear Transfer on Concrete Roughening for Seismic Retrofit Joint

DOI Web Site 1 Citations
  • Okuyama Yukie
    室蘭工業大学 大学院工学研究科 環境創生工学系専攻
  • Takase Yuya
    室蘭工業大学 大学院工学研究科 もの創造系領域
  • Abe Takahide
    飛島建設（株） 建築事業本部 耐震ソリューション部
  • Hiwatashi Takeshi
    東亜建設工業（株） 技術研究開発センター

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Other Title
  • 耐震補強接合部におけるあと施工アンカーのダウエル効果と目荒らし面の噛み合い効果の累加に関する検証

Abstract

<p>In seismic-reinforced structures, the existing member and the newly added reinforcing member are usually joined using concrete roughening by the chipping method and post-installed anchors. However, the current structural design guideline considers only the shear strength of post-installed anchors. Methods to evaluate the mechanical behavior of post-installed anchor used in combination with concrete roughening are currently being evolved based on findings of past studies. As part of this research, we conducted tests using specimens that combine post-installed anchors and concrete roughening, and investigated if the experimental results can be reproduced through the cumulative use of a number of existing models. As a result, a model evolved by modifying the existing contact stress model and adjusting the joint gap and plastic hinge location was found to approximate reasonably well the test results for specimens that combine post-installed anchors and concrete roughening.</p>

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