CUED Publications database

The effect of local reinforcing bar reductions and anchorage zone cracking on the load capacity of RC half-joints

Desnerck, PRH and Lees, J and 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. pp. 865-877. ISSN 0141-0296

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Abstract

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.

Item Type: Article
Uncontrolled Keywords: assessment dapped-end beam half-joint strut-and-tie load-bearing capacity corrosion anchorage cracking re-entrant corner
Subjects: UNSPECIFIED
Divisions: Div D > Structures
Depositing User: Cron Job
Date Deposited: 14 Sep 2017 01:20
Last Modified: 10 Apr 2021 22:20
DOI: 10.1016/j.engstruct.2017.09.021