Effect of Fiber Orientation on Compressive Behavior of CFRP-confined Concrete Columns

被引：27

作者：

Sadeghian, Pedram ^{[1
]}

Rahai, Ali R. ^{[2
]}

Ehsani, Mohammad R. ^{[3
]}

机构：

[1] Islamic Azad Univ Qazvin, Dept Civil & Architectural Engn, Qazvin, Iran

[2] Amir Kabir Univ Technol, Dept Civil & Environm Engn, Tehran, Iran

[3] Univ Arizona, Dept Civil Engn & Engn Mech, Tucson, AZ 85721 USA

来源：

JOURNAL OF REINFORCED PLASTICS AND COMPOSITES | 2010年 / 29卷 / 09期

关键词：

CFRP; fiber orientation; experiment; ductility; confinement; strengthening; concrete column; COMPOSITES; CYLINDERS; THICKNESS; WRAP;

D O I：

10.1177/0731684409102985

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

This article presents the results of experimental studies on concrete cylinders confined with CFRP composites. Thirty small-scale specimens (150 x 300 mm(2)) were subjected to uniaxial compression up to failure and their stress-strain behaviors were studied. Various parameters such as wrap thickness and fiber orientation were considered. Different wrap thicknesses (1, 2, 3, and 4 layers), fiber orientation of 0 degrees, 90 degrees, +/- 45 degrees, and their combinations were investigated. The results demonstrated significant enhancement in the compressive strength, stiffness, and ductility of the CFRP-confined concrete cylinders as compared to plain cases. An analytical model for ultimate stress and strain of confined concrete has been proposed.

引用

页码：1335 / 1346

页数：12

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