Open Access

ARTICLE

Numerical Analysis of Fiber Reinforced Polymer-Confined Concrete under Cyclic Compression Using Cohesive Zone Models

Mingxu Zhang¹, Mingliang Wang², Wei Zhang^3,*

1 China Communications Construction Rail Transit Subsidiary, Bejing, 100000, China
2 China Communications Construction Company Limited, Beijing, 100000, China
3 School of Civil Engineering, Fujian University of Technology, Fuzhou, 350118, China

* Corresponding Author: Wei Zhang. Email:

Structural Durability & Health Monitoring 2024, 18(5), 599-622. https://doi.org/10.32604/sdhm.2024.051949

Received 19 March 2024; Accepted 10 May 2024; Issue published 19 July 2024

Abstract

This paper examines the mechanical behavior of fiber reinforced polymer (FRP)-confined concrete under cyclic compression using the 3D cohesive zone model (CZM). A numerical modeling method was developed, employing zero-thickness cohesive elements to represent the stress-displacement relationship of concrete potential fracture surfaces and FRP-concrete interfaces. Additionally, mixed-mode damage plastic constitutive models were proposed for the concrete potential fracture surfaces and FRP-concrete interface, considering interfacial friction. Furthermore, an anisotropic plastic constitutive model was developed for the FRP composite jacket. The CZM model proposed in this study was validated using experimental data from plain concrete and large rupture strain (LRS) FRP-confined concrete subjected to cyclic compression. The simulation results demonstrate that the proposed model accurately predicts the mechanical response of both concrete and FRP-confined concrete under cyclic compression. Lastly, various parametric studies were conducted to investigate the internal failure mechanism of FRP-confined concrete under cyclic loading to analyze the influence of the inner friction plasticity of different components.

---

Keywords

---