Concrete-Filled Square and Rectangular FRP Tubes under Axial Compression

Axial compression tests have shown fiber reinforced polymer (FRP) tubes to significantly enhance both strength and ductility of concrete columns. However, most experiments and associated models typically do not account for the internal reinforcement, size effect of the column, and the end load-bearing conditions of the tube. An experimental program was undertaken to evaluate the effect of these parameters on the performance of CFFT columns. Glass FRP tubes filled with plain, steel-reinforced, and glass FRP-reinforced concrete were tested with and without end grooves, which would prevent the tube from directly bearing of the axial load. The experiments showed the dowel action of the internal reinforcement to improve the ductility of the columns by restraining the lateral dilation of concrete core. Anempirically derived confinement model, augmented with the stress-strain response of the internal reinforcement, showed close agreement with test results.

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Experimental Research on the Effects of Pipe Diameter on Axial Compression Properties of GFRP Tubes Reinforced Concrete Column

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.972 ◽

2012 ◽

Vol 204-208 ◽

pp. 972-977

Author(s):

Yun Feng Zhang ◽

Shou Kang Liu ◽

De Wang Zhao

Keyword(s):

Reinforced Concrete ◽

Bearing Capacity ◽

Axial Compression ◽

Concrete Columns ◽

Pipe Diameter ◽

Concrete Column ◽

Reinforced Concrete Column ◽

Compression Properties ◽

Frp Tubes ◽

Axial Compression Experiment

Through the axial compression experiment of 9 GFRP tubes reinforced concrete columns, this paper analyzes the failure mode and loading-strain curves under different pipe diameter, and compares bearing capacity between the experimental data with FRP reinforced concrete and the calculated value without GFRP tubes reinforced concrete. he results show that the bearing capacity and ductility of GFRP tubes reinforced concrete column have improved, because of the restriction effect of FRP tubes. The confining ability of FRP tubes on concrete reduced for a certain thickness GFRP tubes constraint concrete short column, while the pipe diameter is increasing.

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Load-strain model for concrete-filled double-skin circular FRP tubes under axial compression

Engineering Structures ◽

10.1016/j.engstruct.2018.12.029 ◽

2019 ◽

Vol 181 ◽

pp. 629-642 ◽

Cited By ~ 6

Author(s):

Y.L. Li ◽

X.L. Zhao ◽

R.K. Singh Raman

Keyword(s):

Axial Compression ◽

Double Skin ◽

Frp Tubes ◽

Strain Model

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Behavior and Modeling of Ultra-High Performance Concrete-Filled FRP Tubes Under Cyclic Axial Compression

Journal of Composites for Construction ◽

10.1061/(asce)cc.1943-5614.0001060 ◽

2020 ◽

Vol 24 (5) ◽

pp. 04020045

Author(s):

H. W. Tian ◽

Z. Zhou ◽

Y. Wei ◽

J. P. Lu

Keyword(s):

Axial Compression ◽

High Performance ◽

High Performance Concrete ◽

Ultra High Performance Concrete ◽

Frp Tubes

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Mechanical Behavior of Steel-Encased Concrete Filled Prefabricated FRP Tubes Short Column under Axial Compression Based on ABAQUS

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.256-259.749 ◽

2012 ◽

Vol 256-259 ◽

pp. 749-753

Author(s):

Hai Xia Zhang ◽

Peng Peng Cao ◽

Jing Yao ◽

Chen Fang

Keyword(s):

Mechanical Behavior ◽

Axial Compression ◽

Mechanical Performance ◽

Full Range ◽

Element Analysis ◽

Composite Column ◽

Short Column ◽

The Finite Element Analysis ◽

Simulation Results ◽

Frp Tubes

The paper presents numerical analysis on steel-encased concrete filled prefabricated FRP (fiber reinforced polymer) tubes short column through the finite element analysis software ABAQUS and verifies simulation results compared with experimental results in order to investigate the mechanical behavior of the composite column under axial compression. Based on the correct simulation results, the full-range study combined with the concrete, steel and FRP tubes of stress distribution, the mechanical performance of the column are studied in this paper. The research shows that the stress-displacement of composite column calculated in the paper can be divided into three stages, namely, elastic stage, elastic-plastic stage and failure stage.

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