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FRP筋与混凝土粘结性能研究进展及本构模型改进
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作者:
作者单位:

1.湖南大学，工程结构损伤诊断湖南省重点实验室，长沙 410082;2.湖南大学，土木工程学院，长沙 410082

作者简介:

张望喜（1971- ），男，博士，教授，主要从事结构基本理论、结构抗震与防连续倒塌性能研究，E-mail: wxizhang2000@hnu.edu.cn。
ZHANG Wangxi (1971- ), PhD, professor, main research interests: the basic theory of structure, seismic analysis of reinforced concrete structures and anti progressive collapse performance research, E-mail: wxizhang2000@hnu.edu.cn.

中图分类号:

TU375.4

基金项目:

国家自然科学基金（52078201）


Research progress on bond behavior between FRP bars and concrete and improvement of constitutive model
Author:
Affiliation:

1.Hunan Provincial Key Lab on Diagnosis for Engineering Structures, Hunan University, Changsha 410082, P. R. China;2.College of Civil Engineering, Hunan University, Changsha 410082, P. R. China

Fund Project:

National Natural Science Foundation of China (No. 52078201)

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    摘要:

    近年来，FRP（纤维增强聚合物）筋代替钢筋在混凝土结构中得到越来越广泛的应用。与钢筋相比，FRP筋具有各向异性、非均质、表面形式不同等特性，这导致FRP筋与混凝土之间的粘结机制不同于钢筋与混凝土。为全面了解FRP筋与混凝土之间的粘结性能，收集数据建立由342个拉拔试验试件组成的数据库，分析粘结性能与各因素之间的关系，对没有达成一致结论的观点进行补充和讨论，分析高温、冻融循环、电解质溶液对FRP筋与混凝土粘结性能的影响；校核常用的粘结-滑移本构模型的计算精度，基于建立的试验数据库，提出新的精度更高的粘结-滑移本构上升段表达式。

    Abstract:

    In recent years, FRP (Fiber Reinforced Polymer) bars have been used more and more widely in concrete structures instead of steel bars. Unlike the latter, FRP bars have the characteristics of anisotropy, heterogeneity and different surface forms, which lead to the different bond mechanisms between FRP bars and concrete. In order to fully understand the bond behavior, a database of 342 pull-out test specimens was set up. The influence of various factors on the bond behavior was analyzed. The viewpoints that there was no consensus were supplemented and discussed. The effects of high temperature, freeze-thaw cycle and electrolyte solution on the bond behavior of FRP bars and concrete were also analyzed. In addition, the predictive accuracy of the commonly used bond-slip constitutive models were checked. Based on the established test database, a new expression of the rising section of the bond-slip constitutive model was set up.

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引用本文

张望喜,胡彬彬,王冠杰,易伟建.FRP筋与混凝土粘结性能研究进展及本构模型改进[J].土木与环境工程学报（中英文）,2023,45(2):111-122. ZHANG Wangxi, HU Binbin, WANG Guanjie, YI Weijian. Research progress on bond behavior between FRP bars and concrete and improvement of constitutive model[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2023,45(2):111-122.10.11835/j. issn.2096-6717.2021.089

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  • 收稿日期:2021-01-23
  • 在线发布日期: 2023-03-20
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