Experimental investigations of timber beams strengthened by CFRP and Rebars under bending

2nd International Conference on Mining, Material and Metallurgical Engineering

矿业工程;材料科学;冶金学

Zhou, Nianqiang^1,2 ; Shi, Weixing^1

College of Civil Engineering, Tongji University, Shanghai

200092, China^1

College of Civil Engineering, Nanjing Forestry University, Nanjing

210037, China^2

关键词: Carbon fiber reinforced plastics (CFRP);    Composite timber beam;    Ductility capacity;    Environmental aging;    Experimental investigations;    Strain response;    Strengthened beams;    Wooden structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/191/1/012043/pdf
DOI  :  10.1088/1757-899X/191/1/012043

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Wooden structure houses deteriorate over time due to environmental aging, fatigue, and other reasons. In order to solve this problem, composite timber beams strengthened by extra steel bars (rebar) and carbon fiber-reinforced plastic (CFRP) are studied experimentally in this paper. Specimens with various strenghting, ie., rebars only, CFRP only, and a combination of the two, were considered under four-point flexural tests. Failure, displacement and strain response and ductility capacity were evaluated for the present tested models. Dramatic enhancement of the capacity in addition to improved deflection and ductility were gained for the strengthened beams relative to the plain specimens, indicating the effectiveness of the reinforcement on the flexural strength of such composite beams.