Development and Testing of New Precast Concrete Tunnel Segments Reinforced with PRF Composite Reinforcement

PROJECT COST:

1 000 000$

PRIMA CONTRIBUTION:

400 000$

PROJECT DETAILS:

This project proposes the development of a new curved FRP reinforcement system, as well as a series of structural tests on new reinforced concrete segments using FRP composite reinforcement, both in the laboratory and in the field. The study parameters include, in particular: (1) the geometric shape of the segment (various curvatures and dimensions); (2) the type of concrete [normal, high-strength, and fiber-reinforced concrete]; (3) the density of longitudinal reinforcement; (4) the density and type of transverse reinforcement; (5) the type of reinforcement [GFRP and steel]; (6) the GFRP reinforcement grade (Grade II and III); and (7) the type of loading (bending, shear, punching, and thrust). In addition, this project includes finite element numerical simulations (using ANSYS and A. BAQUS software) for comparison with experimental results. Parametric studies will also be conducted to optimize the design of FRP-reinforced concrete segments with the goal of improving their service life compared to those using steel reinforcing bars. The recommendations from this research project will be used to carry out pilot projects in collaboration with industry partners, including road tunnels, subway tunnels, and railway tunnels.