Dynamic identification of all-GFRP structures

This research proposes the analysis of the dynamic behavior of 3D GFRP (Glass Fiber Reinforced Polymers) structure. The vertical static loads and the lateral dynamic (seismic, wind,...) actions, that affected the structure, allows to define: the behavior of the member joints and the influence of their loss of rotational stiffness on the global response of the structure; the adequacy of the seismic design provisions of EC8 through forced-based design method are presented and compared to the displacement-based and the hybrid seismic design methods as applied to FRP structures; the assessment of the spectrum response, the behavior factor, the design over strength factor and the dissipative capacity of the structure through modal pushover and time-history analyses. These analyses have been carried out through a FE model, of an existing large GFRP structure, calibrated through the frequency-domain system identification in the field of experimental and operational modal analysis. The aim of this work is the definition of an experimental and numerical database that describes the dynamic behavior of a GFRP frame structure. This database allows investigating the behavior of such a structural configuration and promoting the development of design rules not addressed by EC8.