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Experimental study on the compressive behaviors of CFRP tube-encased concrete columns

Theoretical & Applied Mechanics Letters 2011年第2期1卷 29-32页

作者： Wenbin Sun~(a) School of Civil Engineering,Huaiyin Institute of Technology,89 Beijing North Road,Jiangsu,223001,China School of Civil Engineering Huaiyin Institute of Technology 89 Beijing North Road Jiangsu 223001 China

Nine square concrete columns including 6 CFRP/ECCs and 3 concrete columns are prepared,which have cross-section of 200 mm×200 mm and height of 600 *** CFRP tubes with fibers oriented at hoop direction were manufactured to have 3 or 5 layers of CFRP with 10 mm, 20 mm,or 40 mm rounding corner radii at vertical edges.A 100 mm overlap in the direction of fibers was provided to ensure proper *** compression tests were conducted to investigate the compressive *** is evident that the CFRP tube confinement can improve the behavior of concrete core,in terms of axial compressive strength or axial *** results show that the stress-strain behavior of CFRP/ECCs vary with different confinement parameters,such as the number of confinement layers and the rounding corner radius.

关键词： concrete column encasement confinement compressive behavior

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Experimental Study on the Compressive Behavior of CFRP/ECCs

引用

Journal of Southwest Jiaotong University(English Edition) 2010年第4期18卷 295-302页

作者：孙文彬 School of Civil Engineering Huaiyin Institute of Technology Faculty of Science Jiangsu University

In this study,nine square concrete columns,including six CFRP/ECCs and three plain concrete control specimen columns,were prepared. The CFRP tubes with fibers oriented in the hoop direction were manufactured with 10,20,or 40 mm rounded corner radii at vertical edges. A 100 mm overlap in the direction of fibers was provided to ensure a proper bond. Uniaxial compression tests were conducted to investigate the compressive behaviors including the axial strength,stress-strain response,and ductility. It is evident that the CFRP tube confinement can improve the compressive behavior of concrete core,in terms of axial compressive strength or axial deformability. Based on the experimental results and some existing test database attained by other researchers,a design-oriented model is developed. The predictions of the model for CFRP/ECCs show good agreement with test results.

关键词： Carbon fiber reinforced polymer (CFRP) Concrete column encasement Confinement Compressive behavior Enhancement parameter Design-oriented model

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