Full Session with Abstracts
This paper provides results on the performance based assessment of two reinforced concrete (RC) buildings designed using the ASCE 7-16 “Chapter 6: Tsunami Loads and Effects” and ACI 318-14. The case studies considered are a four-story and an eight-story RC special moment resisting frame building for a location prone to high tsunami hazard in the US Pacific Northwest coast, where the seismic and tsunami design parameters for the building were obtained using site specific seismic and tsunami hazard analyses. For the performance assessment, three-dimensional nonlinear FEM of the example buildings are developed using OpenSees, in which potential RC column flexural and/or shear failures are explicitly modeled. Structural and non-structural damage and losses are computed using a modified version of FEMA P-58. Deaggregation of losses are presented for multiple tsunami hazard intensity measures and for joint tsunami hazard intensity measures to evaluate the relative contribution of each intensity measure to the estimated annualized losses. In addition, probabilities of collapse are estimated for the two example buildings. The latter are used to inform on the target reliability of the tsunami loading and methods proposed in Chapter 6 of ASCE 7-16.