Mechanical analyses of hooked fiber pullout performance in ultra-high-performance concrete

被引：53
|
作者：
Feng, J. [1 ,2 ]
Sun, W. W. [3 ]
Wang, X. M. [1 ]
Shi, X. Y. [4 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 210094, Jiangsu, Peoples R China
[2] Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA
[3] Nanjing Univ Sci & Technol, Dept Civil Engn, Nanjing 210094, Jiangsu, Peoples R China
[4] Nanjing Univ Sci & Technol, Sch Int Educ, Nanjing 210094, Jiangsu, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2014年 / 69卷
基金：
中国国家自然科学基金;
关键词：
Ultra-high-performance concrete; Pullout performance; Slip-hardening; Mechanical deformation; Spalling; STEEL FIBERS; BOND SLIP; STRENGTH; BEHAVIOR; COMPOSITES; MODELS;
D O I：
10.1016/j.conbuildmat.2014.07.049
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this study, a practical model to simulate the pullout performance of hooked steel fiber in ultra-highperformance concrete is proposed. Straight and hooked fiber pullout tests were performed to evaluate the pullout mechanism, based on which slip-hardening, matrix spalling and tunnel damage assumptions are made. With energy conservation, static and fracture mechanical analyses, this model investigates the pullout load due to mechanical deformation as well as additional friction caused by bending. Model predictions are compared with the experimental results of hooked fiber pullout data and reasonably good correlation is observed. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：403 / 410
页数：8
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