Computer simulations and parametric studies of GFRP bridge deck systems

This research studies the structural behavior of a GFRP bridge deck system. The study develops FEM models of the GFRP bridge deck system using ANSYS 7.0 software package. Data collected from field measurements and laboratory testing is used to validate and calibrate the proposed FEM models. Parametric studies through computer simulations are conducted to investigate the characteristics of the system. Four parameters are considered for service load conditions: (a) presence of diaphragms, (b) girder stiffness, (c) girder spacing, and (d) composite action. In addition, geometric and material nonlinearities are considered in the investigation of the capacity of the new bridge system. The analysis results are discussed and conclusions on the GFRP deck system are presented.