Finite element analysis of axially loaded FRP-confined rectangular concrete columns

被引：42

作者：

Lo, S. H. ^{[1
]}

Kwan, A. K. H. ^{[1
]}

Ouyang, Y. ^{[1
]}

Ho, J. C. M. ^{[2
]}

机构：

[1] Univ Hong Kong, Dept Civil Engn, Hong Kong, Hong Kong, Peoples R China

[2] Univ Queensland, Sch Civil Engn, Brisbane, Qld 4072, Australia

来源：

ENGINEERING STRUCTURES | 2015年 / 100卷

关键词：

Finite element; FRP-confined concrete; Rectangular sections; STRESS-STRAIN RELATIONSHIP; COMPRESSIVE BEHAVIOR; CONSTITUTIVE MODEL; SQUARE; STRENGTH; PERFORMANCE; TUBES;

D O I：

10.1016/j.engstruct.2015.06.010

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Fibre-reinforced polymer (FRP) offers an effective and convenient means to strengthen existing RC columns. However, classical mechanics could not have an accurate prediction of the lateral strain due to axial load, hence an assessment on the overall confinement effects of the FRP. The finite element (FE) method, on the other hand, can give a full picture of the stress and the strain developed at a typical cross-section from linear elastic to ultimate failure loads. In this paper, a finite element model for the nonlinear analysis of FRP-confined concrete columns is presented, in which concrete elements are formulated based on advanced constitutive models recently developed, and it is verified against specimens with rectangular sections from existing experimental studies. As a result, the non-uniform and anisotropic confinement effects within rectangular sections of different shapes are determined, and their significance on the overall behaviour of axially loaded concrete columns could be assessed. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：253 / 263

页数：11

共 32 条

[1]

Attard MM, 1996, ACI MATER J, V93, P432

[2] Analytical models for concrete confined with FRP tubes [J].

Becque, J ;

Patnaik, AK ;

Rizkalla, SH .

JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2003, 7 (01) :31-38

[3] Effects of confining stiffness and rupture strain on performance of FRP confined concrete [J].

Dong, C. X. ;

Kwan, A. K. H. ;

Ho, J. C. M. .

ENGINEERING STRUCTURES, 2015, 97 :1-14

[4] A constitutive model for predicting the lateral strain of confined concrete [J].

Dong, C. X. ;

Kwan, A. K. H. ;

Ho, J. C. M. .

ENGINEERING STRUCTURES, 2015, 91 :155-166

[5] Nonlinear finite element modeling of rectangular/square concrete columns confined with FRP [J].

Doran, B. ;

Koksal, H. O. ;

Turgay, T. .

MATERIALS & DESIGN, 2009, 30 (08) :3066-3075

[6]

Fam AZ, 2001, ACI STRUCT J, V98, P451

[7] Comparative study of eccentrically loaded FRP wrapped columns [J].

Hadi, Muhammad N. S. .

COMPOSITE STRUCTURES, 2006, 74 (02) :127-135

[8] Effectiveness of adding confinement for ductility improvement of high-strength concrete columns [J].

Ho, J. C. M. ;

Lam, J. Y. K. ;

Kwan, A. K. H. .

ENGINEERING STRUCTURES, 2010, 32 (03) :714-725

[9] Theoretical analysis of post-peak flexural behaviour of normal- and high-strength concrete beams [J].

Ho, JCM ;

Kwan, AKH ;

Pam, HJ .

STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS, 2003, 12 (02) :109-125

[10]

Imran I, 1996, ACI MATER J, V93, P589

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