Numerical investigation on bending behaviour of hollow precast slab with FRP tubes using Ansys

Abstract

Hollow-core precast concrete slabs are frequently employed in modular building construction to reduce concrete volume and weight. Nevertheless, the presence of the hollow-core increases susceptibility to failure. To address this issue, a composite reinforcing system (CRS) has been developed to support the void in precast slabs. This research aims to investigate the bending behavior of a composite slab comprising precast concrete, steel, and the composite reinforcement system. Bending tests will be conducted on precast slabs with various CRS configurations (including changes in tube material properties and tube cross-section) to assess the structural performance of this innovative construction system. Additionally, a non-linear finite element modeling was employed to gain a comprehensive understanding of the behavior of the internal components of the slab. The findings of this study will offer valuable insights for designing more reliable and cost-effective hollow-core precast concrete slabs.