Concrete Research and Technology
Online ISSN : 2186-2745
Print ISSN : 1340-4733
ISSN-L : 1340-4733
Fundamental Study on Combination of Dowel Action and Shear Transfer on Concrete Roughening for Seismic Retrofit Joint
Yukie OkuyamaYuya TakaseTakahide AbeTakeshi Hiwatashi
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2019 Volume 30 Pages 35-43

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Abstract

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.

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© 2019 Japan Concrete Institute
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