Experimental study of non-circular concrete elements actively confined with shape memory alloy wires

被引：33

作者：

Chen, Qiwen ^{[1
]}

Shin, Moochul ^{[2
]}

Andrawes, Bassem ^{[1
]}

机构：

[1] Univ Illinois, Dept Civil & Environm Engn, Newmark Civil Engn Lab, Urbana, IL 61801 USA

[2] Western New England Univ, Dept Civil & Environm Engn, Springfield, MA 01119 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2014年 / 61卷

基金：

美国国家科学基金会;

关键词：

Shape memory alloys; Active confinement; Ductility; Concrete; Recovery stress; ENHANCED SHEAR-STRENGTH; COMPRESSIVE BEHAVIOR; BRIDGE COLUMNS; TRIAXIAL STRESS; PRISMS; BEAM;

D O I：

10.1016/j.conbuildmat.2014.02.076

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study focuses on developing a novel scheme for applying external active confinement to non-circular concrete elements that lack ductility using shape memory alloys (SMAs). A total of 13 concrete elements (prisms) are tested under monotonic and cyclic uniaxial compression load. The compressive stress-strain relationships of the SMA confined concrete elements are examined and compared with the behaviors of elements confined with conventional glass fiber reinforced polymer (GFRP) jackets. The results clearly show a significant improvement in the ultimate strain and residual (post-peak) strength of concrete elements actively confined with SMA compared to that of GFRP confined elements. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：303 / 311

页数：9

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