| Title |
Deflection of Steel-Concrete Composite Beams with Partial Shear Interaction |
| Authors |
Heo Byung-Wook ; Kwak Myung-Geun ; Bae Kyu-Woong |
| Keywords |
Shear Connector ; Composite Beams ; Effective Stiffness ; Shear Slip ; Partial Shear Interaction |
| Abstract |
The present study investigates the effects of shear slip on deflection of steel-concrete composite beams with partial shear interaction. According to the various current design codes, the deflection is related to the strength of shear connectors in the composite beams. However, the decrease of stiffness due to slip effects are not considered in the current design codes and relevant calculation tools for partial shear connection are not even presented. In previous study, It is derived an exact solution based on the stiffness of shear connectors which is not dependent on the load cases. The equivalent rigidity of composite beams considering three different loading types was first derived based on equilibrium and curvature compatibility, from which a general formula to account for slip effects was developed. To validate this approach, the predicted maximum deflection using the proposed method and currently used equations for the calculation of the beam effective stiffness is compared against test results. From the comparison between test results and analytical study, it is found that the stiffness of a composite beam based on the strength of shear studs is considerably over-estimated. The stiffness of composite beams is predicted accurately with the method proposed in this study. |