Experimental investigation of substandard RC columns confined with SRG jackets under compression

被引：25

作者：

Thermou, Georgia E. ^{[1
,2
]}

Katakalos, Konstantinos ^{[2
]}

Manos, George ^{[2
]}

机构：

[1] Univ Sheffield, Civil & Struct Engn Dept, Sir Frederick Mappin Bldg,Mappin St, Sheffield S1 3JD, S Yorkshire, England

[2] Aristotle Univ Thessaloniki, Dept Civil Engn, Thessaloniki 54124, Greece

来源：

COMPOSITE STRUCTURES | 2018年 / 184卷

关键词：

Fabrics/textiles; Buckling Fibre/matrix bond; Mechanical testing; Seismic strengthening; REINFORCED-CONCRETE MEMBERS; BEHAVIOR; BARS;

D O I：

10.1016/j.compstruct.2017.09.082

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper aims to explore the behaviour of substandard reinforced concrete (RC) columns confined with SteelReinforced Grout (SRG) jackets under monotonically increasing uniaxial compression. A total of 24 specimens of short RC columns of square cross section were designed to fail due to longitudinal reinforcement buckling. Single-layered SRG jackets were applied to 18 of these specimens, whereas the rest served for control without SRG jackets. Parameters of this investigation were the type and density of the steel fabric as well as the corner radius of the cross section. The employed SRG jacketing managed to increase the strength and strain capacity and postpone the buckling of the longitudinal steel bars to occur at higher compressive strain level. Confinement effectiveness with respect to the lateral confining pressure exerted by the used SRG jacketing is discussed along with the observed mode of failure.

引用

页码：56 / 65

页数：10

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