Full Session with Abstracts
As communities become more aware of the tsunami threats along the US Pacific Coast, tsunami evacuation structures are being planned, designed, and constructed throughout at-risk coastal communities. Previously, design guidelines were provided by FEMA P646, and now the most recent edition of ASCE/SEI 7 has, for the first time, provided tsunami design requirements that are expected to be adopted by relevant building codes and is already being applied for preliminary design of vertical evacuation structures. These designs will generally require site-specific inundation analysis to predict the flow environment adjacent to the refuge structure; however, these inundation models are often performed considering “bare earth” scenarios, where the surrounding built environment is not included. Previous work by the research team has shown that structures in the vicinity of an evacuation structure can have a significant impact on the flow, both as it approaches the structure and as it interacts with individual structural components. This work will evaluate the effects of surrounding structures on the predicted flow parameters for a typical evacuation structure and explore how the layout of adjacent buildings can change both the flow and the predicted forces used for design.