Application of Element Combine39 to Reflect the Nature of Newly Puzzel Shaped Crestbond Rib Shear Connector in Composite Beam

In this paper, the three-dimensional finite element model was used to simulate the overall flexural behavior of simple supported composite beams with four-point bending scheme. The investigation was focused on evaluation of load-deflection, relative slip between concrete slab and steel girder, development of strain in concrete slab as well as steel girder. The effect of concrete strength and dimensions of slab were taken into account. The results obtained from modelling are in agreement with results derived from experimental push out tests. Effect of concrete compressive strength and concrete slab width are displayed in detail through deflection and relative slip. There is good in agreement between results of relative slip between concrete slab and steel girder obtained from modeling and experimental push out test results. It is supposed that using element COMBIN39 is correct enough to reflect the nature of Perfobond connector.