期刊论文

Yang, Y.;Zhang, X.

英文

Coatings

2079-6412

2022

12

10

1494-

10.3390/coatings12101494

Conceptualization, R.Y.; methodology, R.Y.; X.Z. and X.W.; validation, R.Y. and Y.Y.; writing—original draft preparation, R.Y. and Y.Y.; writing—review and editing, R.Y., Y.Y., X.Z. and X.W.; supervision, X.Z. and X.W.; funding acquisition, R.Y. and X.W.; All authors have read and agreed to the published version of the manuscript. This research was funded by the Hunan Provincial Natural Science Foundation of China (grant no. 2021JJ50156 and 2021JJ50153), and the Research Foundation of Education Bureau of Hunan Province (grant no. 18A401 and 19C0343).

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In order to study the bond-slip constitutive model between prestressed tendons and concrete, the pull-out tests of single-strand and multi-strands specimens are carried out. The effect of the number of prestressed tendons on the failure mode, slip characteristics and concrete strain of the pull-out specimens are analyzed, and the constitutive models of bond-slip between for single- strand and multi-strand tendons are also proposed. The results show that the bond mechanism between steel strand and concrete is basically similar to that of deformed steel bar, but the slip process of steel strand ...