Mechanical Properties of Steel-FRP Composite Bar under Uniaxial and Cyclic Tensile Loads

Wu, Gang; Wu, Zhishen; Luo, Yunbiao; Sun, Zeyang; Hu, Xiaoge

doi:10.1061/(asce)mt.1943-5533.0000110

Cited by 133 publications

(60 citation statements)

References 7 publications

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“…Supposing that interface bonding is ideal, that deformation between the outer FRP and inner steel is harmonious and using the mixture rule, Wu et al [12] presented a theoretical model of the stress-strain relationship of a steel-FRP composite bar (SFCB) under a uniaxial load, which could be obtained from the properties of the steel and FRP. The BSP proposed in this paper is similar to SFCB, because both of them are composed of inner steel and outer FRP.…”

Section: Theoretical Model Of the Stress-strain Relationship For Bspmentioning

confidence: 99%

“…The BSP proposed in this paper is similar to SFCB, because both of them are composed of inner steel and outer FRP. Therefore, the model presented by Wu et al [12] was accepted for the theoretical calculation of the stress-strain relationship for BSP. Depending on the model, the total strain was divided into three intervals, which are shown in Figure 10.…”

Section: Theoretical Model Of the Stress-strain Relationship For Bspmentioning

confidence: 99%

“…Based on the characteristics of the stress-strain curves from the cyclic tensile test, Wu et al [12] presented the stress-strain restoring force model for their proposed steel-FRP composite bar (SFCB). The model presented by Wu et al [12] was accepted for the theoretical calculation of the stress-strain relationship of BSP under cyclic tensile loading for the same reason mentioned in Section 3.2 of this paper, as shown in Figure 13. f yt is the tensile yield strength.…”

Section: Stress-strain Relationship Of Bsp Under Cyclic Tensile Loadingmentioning

confidence: 99%

“…Combining the advantages of FRP and steel, a new composite material is expected to have outstanding comprehensive properties, such as a high elastic modulus, good ductility, relative low cost, high tensile and shear strength and high corrosion resistance [11,12]. Based on this idea, Wu et al [12] had developed a steel-FRP composite bar (SFCB) that is compounded by an inner ribbed steel bar and outer longitudinal FRP in a pultrusion process. Due to the good properties of high temperature resistance, good environmental protection, low cost and other common properties of FRP, BFRP as a newly developed composite material has been gradually applied in civil engineering recently.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Behavior of BFRP-Steel Composite Plate under Axial Tension

Wang

2014

Polymers

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Combining the advantages of basalt fiber-reinforced polymer (BFRP) material and steel material, a novel BFRP-steel composite plate (BSP) is proposed, where a steel plate is sandwiched between two outer BFRP laminates. The main purpose of this research is to investigate the mechanical behavior of the proposed BSP under uniaxial tension and cyclic tension. Four groups of BSP specimens with four different BFRP layers and one control group of steel plate specimens were prepared. A uniaxial tensile test and a cyclic tensile test were conducted to determine the initial elastic modulus, postyield stiffness, yield strength, ultimate bearing capacity and residual deformation. Test results indicated that the stress-strain curve of the BSP specimen was bilinear prior to the fracture of the outer BFRP, and the BSP specimen had stable postyield stiffness and small residual deformation after the yielding of the inner steel plate. The postyield modulus of BSP specimens increased almost linearly with the increasing number of outer BFRP layers, as well as the ultimate bearing capacity. Moreover, the predicted results from the selected models under both monotonic tension and cyclic tension were in good agreement with the experimental data.

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Section: Theoretical Model Of the Stress-strain Relationship For Bspmentioning

confidence: 99%

Section: Theoretical Model Of the Stress-strain Relationship For Bspmentioning

confidence: 99%

Section: Stress-strain Relationship Of Bsp Under Cyclic Tensile Loadingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical Behavior of BFRP-Steel Composite Plate under Axial Tension

Wang

2014

Polymers

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“…Also, the use of the innovative rebars, i.e., steel fiber composite bars (SFCBs), will increase the life spans of structures because the inner steel bar is protected against corrosion (Fig 1). Uniaxial and cyclic tensile behavior of the innovative rebars were experimentally tested by Wu et al (2010).…”

Section: Introductionmentioning

confidence: 99%

Bond-Based Earthquake-Proof of RC Bridge Columns Reinforced with Steel Rebars and SFCBs

Fahmy¹,

Wu²

2012

Earthquake-Resistant Structures - Design, Assessment and Rehabilitation

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Visual damage identification of concrete cylinders with steel‐fiber‐reinforced composite bars based on acoustic emission

Guo

Chen

Tang

et al. 2021

Structural Contr & Hlth

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Steel-fiber-reinforced composite bar (SFCB) is a composite bar composed of a crescent-rib steel bar and an outer protruded fiber-reinforced polymer (FRP) layer. Due to its unique post-yield stiffness and superior anti-corrosion behavior, the SFCB is except to be an ideal reinforcement for concrete structures subject to a high corrosion environment. For SFCB-reinforced concrete cylinders, their internal damage mechanism has never been experimentally studied but was usually speculated with the brittle failure due to the potential brittle fracture of the SFCB. To reveal the compression damage mechanism of SFCBreinforced concrete cylinders, a uniaxial compression test for SFCB-reinforced concrete cylinders was carried out at first. The entire damage process of SFCBreinforced concrete cylinders was monitored in real-time by acoustic emission (AE), a widely used nondestructive testing method. The test result shows that the SFCB-reinforced concrete cylinders fail after the buckling of longitudinal SFCB or the fracture of the stirrup. The intensity signal analysis of AE proves the failure mode of the SFCB-reinforced concrete cylinder was close to a plastic failure instead of a brittle failure. Furthermore, a new damage visualization method is proposed to analyze the internal damage of the concrete cylinders by using the spatial b value of AE. The T value was constructed by combining the spatial b value with the density distribution of AE events. It is proven that the T value is highly sensitive to the serious damages of the concrete cylinders and can be used to identify the damage locations inside the concrete cylinders.acoustic emission, concrete cylinder, damage identification, steel-fiber-reinforced composite bar, uniaxial compression | INTRODUCTIONSteel-fiber-reinforced composite bar (SFCB) is a type of composite bar developed almost a decade ago. 1 It is composed of a crescent-rib steel bar and an outer protruded fiber-reinforced polymer (FRP) layer, as shown in Figure 1. SFCB has a good bonding property with concrete 2,3 and is excepted to be an ideal reinforcement for concrete structures subject to the high earthquake risk area or the high corrosion environment due to its unique post-yield stiffness and superior anti-corrosion behavior. 1,4,5

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Mechanical Properties of Steel-FRP Composite Bar under Uniaxial and Cyclic Tensile Loads

Cited by 133 publications

References 7 publications

Mechanical Behavior of BFRP-Steel Composite Plate under Axial Tension

Mechanical Behavior of BFRP-Steel Composite Plate under Axial Tension

Bond-Based Earthquake-Proof of RC Bridge Columns Reinforced with Steel Rebars and SFCBs

Visual damage identification of concrete cylinders with steel‐fiber‐reinforced composite bars based on acoustic emission

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