Experimental and Numerical Investigations of PVC-FRP Confined Concrete Column-RC Beam Joint Reinforced with Core Steel Tube under Axial Load

Yu, Feng; Guan, Yucong; Fang, Yuan; Li, Dongang

doi:10.1007/s12205-021-0381-6

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…This adaptability not only enhances design options but also facilitates efficient construction, making it a versatile and valuable addition to the field of structural engineering. In addition, FRP materials are lightweight, high strength and easy to process, greatly reducing the use of support structures and connections in the construction stage, thus reducing the dead weight of the structure and the construction cost [11]. At the same time, FRP materials can also be locally enhanced or repaired according to the need, improving the reliability and safety of the structure.…”

Section: Action Mechanism and Advantage Of Frp Constraint Concrete Co...mentioning

confidence: 99%

Analysis on Mechanical Properties of FRP Constrained Concrete Core Reinforcement Under Cyclic Load

Zhenlong,

Zenglin,

Dongyu

et al. 2024

TECM

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This article aims to analyse the mechanical properties of FRP confined concrete core rods under cyclic loading. By observing the behaviour characteristics of FRP confined concrete core rods under different cyclic loads, the influence of FRP confinement on concrete cyclic loading is analysed. Based on theoretical analysis, this article establishes a corresponding mechanical model and analyses the response mechanism of FRP constraints to concrete cyclic loads through simulation calculations. Through experimental research and theoretical analysis, it is possible to fully understand the performance of new composite structural materials. The research results of this article indicate that the confinement of FRP bars can significantly improve the compressive strength of concrete specimens. At a constraint ratio of 20%, the compressive strength of the specimen increased by 30% compared to the unconstrained ratio; At 40%, the compressive strength increased by 50%, therefore, FRP confinement can significantly improve the ductility of concrete and reduce fatigue damage under cyclic loading. Through this research method, important evidence can be provided for the application of concrete in practical engineering.

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Section: Action Mechanism and Advantage Of Frp Constraint Concrete Co...mentioning

confidence: 99%

Analysis on Mechanical Properties of FRP Constrained Concrete Core Reinforcement Under Cyclic Load

Zhenlong,

Zenglin,

Dongyu

et al. 2024

TECM

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“…On the basis of the analytic results in Ref. [ 36 ], to completely reveal the doubly confining effect of the joint stirrups and steel tube on the core concrete, the modified confined concrete constitutive model implemented by Mander [ 53 ] is adopted, and the shear stress

and shear deformation

of the panel zone are calculated as follows.

where,

and

are the area, width, height, axial compressive stress and strain of the diagonal strut, respectively.…”

Section: Numerical Modellingmentioning

confidence: 99%

“…As mentioned above, multiple studies have confirmed the feasibility of the joint with STC. Similar measures were applied to deal with connections between the PFCC columns and RC beams, and a series of static experiments and FE simulations were performed [ 33 , 34 , 35 , 36 ]. The results revealed that the bearing capacity, deformability and stiffness of the specimens increased considerably with the improvement in the steel ratio of STC.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations on Seismic Behavior of RC Beam to PVC-CFRP Confined Concrete Column Exterior Joint with Steel Tube Connector

Tan

Bao

et al. 2022

Polymers

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Recently, substantial investigations were developed on a polyvinyl chloride (PVC)-carbon fiber-reinforced polymer (CFRP) confined concrete (PFCC) structure owing to its superior mechanical behavior and durability. However, a convenient and effective joint configuration between the PFCC columns and reinforced concrete (RC) beams still requires in-depth study. In the present work, the seismic performance of an RC beam to PFCC column exterior joint with steel tube connector (STC) is systematically studied. Eleven joint specimens are fabricated and tested, with the steel ratio of STC, reinforcement ratio of the frame beam, axial compression ratio, stirrup ratio of the joint and CFRP strips spacing as the design parameters. The experimental results, that is, 8 the failure modes, hysteretic response, ductility, strength, stiffness and energy dissipation, are analyzed. All specimens exhibit joint shear failure, although the joints with STC exhibit significantly better performance those of ordinary joint. In addition to reducing the axial compression ratio, the reinforcement ratio of the frame beam or increasing the stirrup ratio of the joint can also produce a positive effect. Furthermore, the numerical analysis of the exterior joints is performed; the calculated skeleton curves agree well with the test results, and additional parametric studies (i.e., the diameter, height and concrete strength of the joint) are carried out based on the verified numerical model.

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FE Analysis on Size Effect in Torsional Behavior of Rectangular RC Beams with and Without FRP Strengthening

Shokri,

Edalati,

Mirhosseini

et al. 2024

KSCE Journal of Civil Engineering

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Experimental and Numerical Investigations of PVC-FRP Confined Concrete Column-RC Beam Joint Reinforced with Core Steel Tube under Axial Load

Cited by 5 publications

References 32 publications

Analysis on Mechanical Properties of FRP Constrained Concrete Core Reinforcement Under Cyclic Load

Analysis on Mechanical Properties of FRP Constrained Concrete Core Reinforcement Under Cyclic Load

Experimental and Numerical Investigations on Seismic Behavior of RC Beam to PVC-CFRP Confined Concrete Column Exterior Joint with Steel Tube Connector

FE Analysis on Size Effect in Torsional Behavior of Rectangular RC Beams with and Without FRP Strengthening

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