Seismic fragility of a tilt-up concrete building in the Central United States

The focus of this investigation is a seismic performance evaluation conducted for a low-rise, tilt-up concrete building structure typical of those in the Central United States (U.S.). The case study building was selected as a representative Central U.S. structure. As a first step, the structure was represented using a simple two degree-of-freedom model. Linear dynamic analyses using synthetic ground motion records of varying intensity levels were used to assess the seismic vulnerability of the structure and to develop seismic fragility curves that relate the probability of exceeding a particular performance level to the earthquake intensity. The findings of this study provide information about the expected seismic performance of a common type of structure in Mid-America region and highlight the importance of adequate in-plane roof diaphragm strength and adequate connectivity between the roof diaphragm and concrete walls for lateral load transfer.

Seismic fragility of a tilt-up concrete building in the Central United States Conference Paper