The effect of local reinforcing bar reductions and anchorage zone cracking on the load capacity of RC half-joints
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Desnerck, P., Lees, J., & Morley, C. (2017). The effect of local reinforcing bar reductions and anchorage zone cracking on the load capacity of RC half-joints. Engineering Structures, 152 865-877. https://doi.org/10.1016/j.engstruct.2017.09.021
Half-joint beams, also referred to as dapped-end beams, have been the subject of several studies, primarily focussing on the design optimisation of new reinforced concrete beams and bridge decks. Existing half-joint structures, however, often show signs of deterioration and can exhibit improper reinforcement detailing. In order to gain a better insight into the impact of local corrosion, anchorage cracking, limited amounts of provided shear reinforcement, and improper reinforcement detailing, a test program was designed. Full-scale tests on nine half-joint beams were performed. The results of the study show that even though the impact of an individual shortcoming on the load carrying capacity of reinforced concrete half-joint beams might not be substantial, inspectors and assessors should pay attention to the possibility of combined effects. When multiple deterioration processes are noted and/or questions are raised with respect to the reinforcement detailing, the impact on the load carrying capacity of the beam might be larger than the linear combination of the individual effects.
assessment, dapped-end beam, half-joint, strut-and-tie, load-bearing capacity, corrosion, anchorage, cracking, re-entrant corner
Is supplemented by: https://doi.org/10.17863/CAM.13336
The authors would like to acknowledge the financial support of EPSRC – the Engineering and Physical Sciences Research Council (UK) – through the EPSRC Project ‘Reinforced concrete half-joint structures: Structural integrity implications of reinforcement detailing and deterioration’ [Grant no. EP/K016148/1].
Engineering and Physical Sciences Research Council (EP/K016148/1)
External DOI: https://doi.org/10.1016/j.engstruct.2017.09.021
This record's URL: https://www.repository.cam.ac.uk/handle/1810/268163
Attribution 4.0 International, Attribution 4.0 International, Attribution 4.0 International
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