EVALUATION OF MODELS AND PROPOSING A NEW MODEL OF CIRCULAR COLUMNS CONFINED WITH DIFFERENT FRP COMPOSITES

被引：0

作者：

Fahmy, Mohamed ^{[1
]}

Wu, Zhi-Shen ^{[1
]}

机构：

[1] Ibaraki Univ, Urban & Civil Engn Dept, Hitachi, Ibaraki 3168511, Japan

来源：

ISISS '2009: INNOVATION & SUSTAINABILITY OF STRUCTURES, VOLS 1 AND 2 | 2009年

关键词：

circular columns; confined concrete; confinement stiffness; FRPs; stress-strain relationship; FIBER-REINFORCED POLYMER; STRESS-STRAIN MODEL; CONCRETE CYLINDERS; WRAPPED CONCRETE; STRENGTH; BEHAVIOR;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Two analytical popular models are employed to find concrete stress-strain relationship of three scale-model circular columns confined with different types of fiber-reinforced polymer (FRP) composites. The second ascending part of the stress-strain relationship of well confined concrete is evaluated in the light of available database from the existing literature using these models. The results showed that the examined models do not satisfy the criterion that the slope of the second branch of the stress-strain curve of sufficiently confined concrete is independent of FRP types, provided the design confinement modulus is the same. A comparison of predicted values of the second stiffness with the collected test results of 249 cylinder specimens confined with composites revealed the necessity for a more accurate model. A model considering the effect of FRP confinement modulus is proposed.

引用

页码：336 / 344

页数：9

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