Probabilistic analysis of a PR steel-concrete composite frame

The paper investigates the seismic performance of a partially-restrained steel-concrete composite frame using the probabilistic approach. The analyzed frame has been tested at the ELSA laboratory of the Joint Research Centre of Ispra (Italy). The component method has been used to model both interior and exterior composite joints. The Latin Hypercube method has then been employed to draw the probabilistic distribution curves of the joints. Hence, the fragility and performance curves of the whole PR composite frame have been determined for four limit states.