The Seismic Performance Assessment Study of a Reinforced Concrete Structure using Hybrid Simulation

Full Name: Georgios Giotis

Academic Affiliation: Civil Engineering Department, UofT

Position: MASc Candidate

Abstract: The realistic performance assessment of structures is of significant importance during extreme excitation cases, like earthquakes. Within the structural engineering community, the aforementioned problem is usually addressed using purely numerical or experimental studies. However, the numerical studies are subjected to modeling uncertainty errors, while the experimental studies are constrained in small-scale models and are usually considered as resources prohibitive and hazardous for the testing equipment. In this study, the hybrid simulation is implemented, which is a performance assessment technique that occurs from the combination of the numerical and the experimental ones. In hybrid testing, the critical components of a structure are physically represented and experimentally tested, while the rest of the structure is numerically simulated. The interaction of these two modules is taken into account. In this study, the examined structure is a three-storey, three-bay reinforced concrete building subjected to a sequence of two seismic events. During initial investigation, a ground floor column was proven the element that most of the damage is concentrated and as a result, this is the physically represented element during the hybrid testing. The objectives of this study were to develop an application platform for conducting hybrid testing and to perform the seismic performance assessment of the intact structure using the study seismic sequence. Subsequently, the damaged column is to be repaired and the experiment is to be repeated, but with a case of a repaired structure in order to assess the element’s response enhancement occurred by the employed repairing techniques.