Durability of CFRP strengthened circular hollow steel members under cold weather: Experimental and numerical investigation

被引：20
|
作者：
Kabir, M. H. [1 ]
Fawzia, S. [1 ]
Chan, T. H. T. [1 ]
机构：
[1] Queensland Univ Technol, Fac Sci & Engn, Sch Civil Engn & Built Environm, 2 George St, Brisbane, Qld 4000, Australia
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 123卷
关键词：
Durability; CFRP; CHS; Cold weather; FE approach; HIGH-TEMPERATURES; FRP MATERIALS; JOINTS; BEAMS; BEHAVIOR; SHEETS; ADHESIVE; DESIGN; DAMAGE; TUBES;
D O I：
10.1016/j.conbuildmat.2016.06.116
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The durability of carbon fibre reinforced polymer (CFRP) strengthened steel circular hollow section (CHS) member under prolonged cold weather has not been explored sufficiently. Furthermore, various parameters that may affect the durability of such members have not been revealed yet. This paper presents an analytical and experimental study with a finite element (FE) approach to study the effects of prolonged cold weather (+3 degrees C) exposure on CFRP strengthened CHS member subjected bending. It was found that a prolonged exposure about 12 month cold weather immersion adversely affected the durability of strengthened beams by reducing strength and stiffness. Durability design factor has been recommended. The proposed analytical models and FE models were found in good agreement with the experimental results. The results of parametric studies showed that the durability design factors varied from section to section, CFRP with higher tensile modulus and higher number of CFRP layers performed better in cold weather. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：372 / 383
页数：12
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