This paper presents a tube anchor system designed to mitigate the effects of debonding in Reinforced Concrete (RC) elements strengthened with externally bonded Fiber-Reinforced Polymer (FRP) sheets. Finite-element studies are conducted to investigate the performance characteristics of the tube anchor and develop an optimized design procedure. The optimized design procedure is used to design the tube anchor system for the seismic strengthening of two RC shear walls strengthened with FRP sheets. Computer modelling results are correlated with observations from laboratory tests. It is shown that the tube anchor system is successful in meeting its performance objective of utilizing a greater portion of the ultimate tensile capacity of the FRP laminate and matches the performance of an equivalent FRP anchor system without the potential for brittle fracture of the anchoring system. Preliminary design guidelines for the application of the tube anchor in seismic and blast retrofit are also presented.

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Conference 24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2016
Citation
Woods, J.E. (J. E.), & Lau, D.T. (2017). Development of an anchor system for seismic and blast retrofit of reinforced concrete structures using FRP sheets. In Mechanics of Structures and Materials: Advancements and Challenges - Proceedings of the 24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM24 2016 (pp. 535–542).