Numerical modelling of concrete bearing strength for different heights of concrete blocks

• Main Authors: IOP, Dhanasekar, M (Author), Lee, SW (Author), Oh, CL (Author), Yahya, NA (Author), Zain, MRM (Author)
• Format: Article
• Language: English
• Published: 2019
• Online Access: View Fulltext in Publisher

 Bearing strength of concrete is one of important design characteristics in transmit the bearing force in structural supports such as column corbel, bridge bearing system, concrete connection, anchorage in post-tension members and other types of structure supports. Concrete bearing strength is depending on ratio of unloaded-to-loaded area and compressive strength of concrete. However, the effect of concrete block height on bearing strength of concrete is not included. Hence, the effect of different heights on concrete bearing strength were investigated using numerical modelling. The three-dimensional finite element model (FEM) for nonlinear analysis of concrete bearing were developed and analyzed in ABAQUS/Explicit. The FE models were validated based on pre-existing experimental results. The confinement effect and structural ductility of concrete blocks with different heights were evaluated. The FE results indicate that the level of internal confinement and the structural ductility of concrete blocks were affected significantly as increasing of concrete block heights. The bearing force for the concrete block with 150mm high was significantly dropped to 55% as compare to control specimen of 50mm high.