Experimental Research and Finite Element Analysis on the Bonding Behavior of CFRP-Concrete Interface

Abstract:

The bonding behavior of CFRP-concrete interface has important influence on the mechanical behavior and the failure mode of the strengthened structure. In this paper, a total of 4 specimens strengthened with CFRP plate were prepared and the double-shear tests were conducted to investigate the mechanical behavior and the failure mode of the CFRP-concrete bonding. During the tests, the on the ultimate bearing capacity and the distribution of the CFRP strains were measured and the influence of bonding lengths and thickness of the epoxy were discussed. According to the test results, the distribution of the CFRP strain along the bonding length shows an exponential decreasing law, and the strain in the vicinity of the loading position was much greater than that at the ends. Based on the test data, the finite element model of the specimens was developed, by using the orthotropic spring elements to simulate the adhesive layer with ANSYS software. The comparison of the analytical results and the experimental results indicates that both results have shown a good agreement.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 1109-1117
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.1109
• Online since: October 2012
• Authors: Hui Peng, Shu Yu Yu, Chun Sheng Cai, Wei Wei Liu
• Keywords: Bonding Behavior, CFRP Plate, Finite Element Analysis (FEA), Interface, Shear Test

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