Strengths of Struts and Nodal Zones for Strut-and-Tie Model Design of Reinforced Concrete Corbels

The strut-and-tie model (STM) method is useful for the limit state design of reinforced concrete (RC) corbels. However, rational RC corbels, designers must accurately determine strengths struts and nodal zones to check strength conditions a selected STM anchorage reinforcing bars in zones. In this study, authors suggested numerical process determining corbel STMs. technique incorporates two-dimensional (2-D) stresses at strut zone locations, 2-D failure envelope concrete, deviation angle between orientation compressive principal stress trajectory, effect confinement by bars. also proposed equations that apply typical determinate indeterminate STMs considered effects shear span-to-effective depth ratio, horizontal-to-vertical load primary tensile horizontal reinforcement ratios developing equations. predicted 391 corbels tested examine appropriateness compares very well with experimental results, proving analysis are possible using present study's strengths. Doi: 10.28991/cej-2021-03091725 Full Text: PDF