The use of post-installed reinforcing bars to connect existing concrete elements to newly cast concrete has increased significantly in the last decade. Very common applications are connections between reinforced concrete beams/slabs and columns/walls or rein-forced concrete columns/walls and foundations. The design of such connections is clearly limited by the need to use straight rein-forcing bars. Consequently, a clear understanding of the unique load-displacement properties of the post-installed reinforcing bars, the necessary loading and installation conditions, and the stresses introduced in the concrete members is required. In this paper de-sign methods based on Eurocode 2 and a new approach considering the actual bond-splitting performance of the adhesive are com-pared and applied to some case studies where post-installed reinforcing bar systems are used for moment resisting connections. Through the design of typical connections, the challenges and the opportunities associated with the use of post-installed reinforcing bars and their proper design are explored.

Design of anchorages in connections using post-installed reinforcing bars

Sara Cattaneo;
2021

Abstract

The use of post-installed reinforcing bars to connect existing concrete elements to newly cast concrete has increased significantly in the last decade. Very common applications are connections between reinforced concrete beams/slabs and columns/walls or rein-forced concrete columns/walls and foundations. The design of such connections is clearly limited by the need to use straight rein-forcing bars. Consequently, a clear understanding of the unique load-displacement properties of the post-installed reinforcing bars, the necessary loading and installation conditions, and the stresses introduced in the concrete members is required. In this paper de-sign methods based on Eurocode 2 and a new approach considering the actual bond-splitting performance of the adhesive are com-pared and applied to some case studies where post-installed reinforcing bar systems are used for moment resisting connections. Through the design of typical connections, the challenges and the opportunities associated with the use of post-installed reinforcing bars and their proper design are explored.
Italian Concrete Days 2020
post-installed reinforced bar, moment resisting connections, splitting
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1206581
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