Abstract
Reinforced Concrete Pipe (RCP) is widely used in storm and wastewater management owing to its resiliency and reliability. This study proposes nonlinear 3D finite-element models (FEMs) to explore the effects of reinforcement configuration on RCP structural performance. RCP having 825-mm, 1200-mm, and 1800-mm in diameter with the three reinforcement configurations commonly used by industry, namely single-cage, double-cage, and triple-cage, were modelled for evaluating 65D, 100D, and 140D pipe design classes. FEM predicted load–deflection was validated using experimental results on full-scale RCP specimens. Average FEM prediction error of service and ultimate loads was 6.8% and 6.3%, respectively. FEM stress contours suggested agreement with experimental observations. The development of stress in the concrete and steel reinforcement during the there-edge bearing test (TEBT) was evaluated and discussed. A thorough parametric analysis was performed on developed single and double-cage FEMs and demonstrated that the influence of the reinforcement area, cover, positioning, and yield strength on RCP behavior could be rationally captured by the numerical models.
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