Fatigue performance test on inclined central cracked steel plates repaired with CFRP strand sheets

被引：29
作者：
Chen, Tao [1 ,2 ]
Li, Lingzhen [1 ,2 ]
Zhang, Ningxi [1 ,2 ]
Song, Xiaobin [1 ,2 ]
Hidekuma, Yuya [3 ]
机构：
[1] Tongji Univ, Minist Educ, Key Lab Performance Evolut & Control Engn Struct, Shanghai 200092, Peoples R China
[2] Tongji Univ, Dept Struct Engn, Shanghai 200092, Peoples R China
[3] Nippon Steel & Sumikin Mat Co Ltd, Tokyo 1030024, Japan
来源：
THIN-WALLED STRUCTURES | 2018年 / 130卷
基金：
中国国家自然科学基金;
关键词：
CFRP strand sheet; Steel plate; Inclined crack; Fatigue crack propagation life; Oblique compression failure mode; BEHAVIOR; GROWTH; PANEL;
D O I：
10.1016/j.tws.2018.06.004
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
An experimental study was conducted on central-cracked steel plates with different crack inclination angles that had been repaired with carbon fiber reinforced polymer (CFRP) strand sheets. Initial cracks with five different inclined angles (0-60) were artificially induced from a central hole of steel plates. All the cracks had the same projection length, running perpendicular to the loading axis. Crack lengths, crack trajectories, failure modes and the effects of different repair configurations were investigated, and fatigue crack propagation lives were compared. A typical adhesive failure mode, oblique compression failure in the adhesive layer, was observed. A conclusion was drawn that fatigue life was directly determined by the projection length, while the projection length was calculated from the initial crack length and inclination angle. The average fatigue life extension ratio of specimens with single-sided repairs was 1.44; that of specimens with double-sided repairs was 3.03.
引用
收藏
页码：414 / 423
页数：10
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