Deformability of reinforced concrete hollow columns confined with CFRP

被引：1

作者：

Lignola, Gian Piero ^{[1
]}

Prota, Andrea ^{[1
]}

Manfredi, Gaetano ^{[1
]}

Cosenza, Edoardo ^{[1
]}

机构：

[1] Univ Naples Federico II, Naples, Italy

来源：

ACI STRUCTURAL JOURNAL | 2007年 / 104卷 / 05期

关键词：

buckling; carbon fiber-reinforced polymer; fiber-reinforced polymer confinement;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A large number of reinforced concrete (RC) bridges built in Europe between the 1950s and the 1970s are characterized by hollow section piers. Many of them, are now in need of a seismic upgrade to improve their response under earthquake. To study the behavior of rectangular hollow cross sections subjected to combined axial load and bending, a total of seven 1:5 scaled specimens has been tested at the University of Naples Federico H. Tested specimens have external dimension of the section 14.17 in. (360 mm), wall thickness of 2.36 in. (60 mm), and height of 4.27 ft. (1.30 m) representing, in reduced scale, typical square hollow bridge piers. The paper discusses the outcomes of the performed tests focusing on the analysis of cross-section curvature, member deformability, specific energy, and model restraints. A first application of a refined method under development is presented to predict the behavior of unstrengthened specimens.

引用

收藏

页码：629 / 637

页数：9

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