Numerical investigation on the flexural performance of laced steel–concrete composite (LSCC) one-way slab system

Abstract

In this paper, numerical investigations are carried out to assess the flexural performance of laced steel–concrete composite (LSCC) one-way slab system subjected to monotonic loading. The individual LSCC units are modelled as L-shaped beams. Flanges of two LSCC units are then connected using high strength steel bolts. Finite element analysis of the LSCC slab system is carried out in ABAQUS. Concrete damaged plasticity (CDP) model is used for concrete in both tension and compression including damage characteristics. Nonlinear behaviour of steel is modelled using plasticity model available in the software. The LSCC slab system is then subjected to two-point loading under displacement control mode. The LSCC slab system is found to take the load up to 333 kN for 200-mm deflection. The composite action of the two LSCC units is evident from the deformed shape. Therefore, the proposed integration scheme for LSCC one-way slab system using bolts is found to be effective. An analytical procedure is also described to estimate the strength of the LSCC one-way slab system based on the different failure criteria. The strength obtained from the analytical model is found to be in close agreement with those obtained from ABAQUS.