Comparison of FRP-Retrofitting Strategies in Chinese and Italian Codes

Abstract eng:
In recent years, FRP (fiber-reinforced polymer/plastic) has been widely used in retrofitting of R/C structures due to its high tensile property. Many research works and actual applications about FRP retrofitting for civil structures were carried out by both domestic and international organizations. However, different technical specifications are used in FRP retrofitting practice for R/C structures in different countries. As an example, related specifications about FRP-retrofitting strategies in Chinese and Italian codes are compared in this paper. The strategies of the both codes for FRP-retrofitting concrete structures are consistence in essence from principle point of view, nevertheless, the calculation methods of the bonded length, flexural strengthening, and shear strengthening are different from each other. The reasons leading to distinctness and sameness are also interpreted concretely. The differences would illuminate the designer to pay attention to the related issues during calculation.

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