Numerical studies on the entire debonding propagation process of FRP strips externally bonded to the concrete substrate
Numerical studies on the entire debonding propagation process of FRP strips externally bonded to the concrete substrate
Debonding of FRP strips from concrete substrate is an important issue in FRP-strengthened concrete structures. While a great number of expressions have been published to determine the strength of the FRP-concrete bond, few closed-form solutions are available to well predict the entire load displacement responses. This paper has numerically studied the full-range behavior of FRP strips debondingfrom concrete substrate by using Finite Element (FE) predictions which show good correlation with experimental results. Based on the numerical predictions, solutions have been developed to describe the load-displacement responses at each loading stage. The impacts of the strip width, the bond length, the thickness and the elastic modulus of FRP strips on the proposed solutions have been discussed. The proposed solutions show good accordance with the experimental results and the numerical predictions, indicating its reliability in predicting the interfacial behavior of FRP-concrete bond.
218-235
Sun, Wei
ab8e8179-f25d-4f51-95c3-8c009acf0c27
Peng, Xu
8d3814e0-4bee-4571-8c92-d27b0acee6a0
Liu, Haifeng
555be8a6-e22e-4199-a451-6bb3ddef285f
Qi, Heping
37e0e9df-fa8e-4153-b51d-14161a0ca37d
15 September 2017
Sun, Wei
ab8e8179-f25d-4f51-95c3-8c009acf0c27
Peng, Xu
8d3814e0-4bee-4571-8c92-d27b0acee6a0
Liu, Haifeng
555be8a6-e22e-4199-a451-6bb3ddef285f
Qi, Heping
37e0e9df-fa8e-4153-b51d-14161a0ca37d
Sun, Wei, Peng, Xu, Liu, Haifeng and Qi, Heping
(2017)
Numerical studies on the entire debonding propagation process of FRP strips externally bonded to the concrete substrate.
Construction and Building Materials, 149, .
(doi:10.1016/j.conbuildmat.2017.05.117).
Abstract
Debonding of FRP strips from concrete substrate is an important issue in FRP-strengthened concrete structures. While a great number of expressions have been published to determine the strength of the FRP-concrete bond, few closed-form solutions are available to well predict the entire load displacement responses. This paper has numerically studied the full-range behavior of FRP strips debondingfrom concrete substrate by using Finite Element (FE) predictions which show good correlation with experimental results. Based on the numerical predictions, solutions have been developed to describe the load-displacement responses at each loading stage. The impacts of the strip width, the bond length, the thickness and the elastic modulus of FRP strips on the proposed solutions have been discussed. The proposed solutions show good accordance with the experimental results and the numerical predictions, indicating its reliability in predicting the interfacial behavior of FRP-concrete bond.
Text
AM_Numerical studies on the entire debonding propagation process of FRP strips externally bonded to the concrete substrate
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Numerical studies on the entire debonding propagation process of FRP strips externally bonded to the concrete substrate
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Accepted/In Press date: 11 May 2017
e-pub ahead of print date: 22 May 2017
Published date: 15 September 2017
Identifiers
Local EPrints ID: 435396
URI: http://eprints.soton.ac.uk/id/eprint/435396
ISSN: 0950-0618
PURE UUID: d3a89ae8-9237-475b-a8b4-0b51035f5931
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Date deposited: 04 Nov 2019 17:30
Last modified: 16 Mar 2024 08:21
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Author:
Wei Sun
Author:
Xu Peng
Author:
Haifeng Liu
Author:
Heping Qi
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