Restoring force model for circular RC columns strengthened by pre-stressed CFRP strips

被引：6

作者：

Zhou, Changdong ^{[1
]}

Lu, Xilin ^{[2
]}

Li, Hui ^{[1
]}

Tian, Teng ^{[1
]}

机构：

[1] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China

[2] Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai 200092, Peoples R China

来源：

STEEL AND COMPOSITE STRUCTURES | 2014年 / 17卷 / 04期

基金：

中国国家自然科学基金;

关键词：

restoring force model; circular reinforced concrete column; pre-stressed fiber reinforced polymer; seismic behavior; active confinement; HYSTERETIC MODELS;

D O I：

10.12989/scs.2014.17.4.371

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents a tri-linear restoring force model based on the test results of 12 circular RC columns strengthened by CFRP strips under low cyclic loading. The pre-stress of CFRP strips and axial load ratio of specimens are considered as the affect parameters of the proposed model. All essential characteristics of the hysteretic behavior of the proposed model, including the hysteretic rules, main performance points, strength degradation, stiffness degradation and confinement effects are explicitly analyzed. The calculated results from the proposed model are in good agreement with the experimental results, which shows that the recommended model can be reliably used for seismic behavior predictions of circular RC columns strengthened by pre-stressed CFRP strips.

引用

页码：371 / 386

页数：16

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