期刊
ENGINEERING STRUCTURES
卷 152, 期 -, 页码 865-877出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2017.09.021
关键词
Assessment; Dapped-end beam; Half-joint; Strut-and-tie; Load-bearing capacity; Corrosion; Anchorage; Cracking; Re-entrant corner
资金
- 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' [EP/K016148/1]
- Engineering and Physical Sciences Research Council [EP/K016148/1] Funding Source: researchfish
- EPSRC [EP/K016148/1] Funding Source: UKRI
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. (C) 2017 The Authors. Published by Elsevier Ltd.
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