SCOUR AMPLIFICATION CAUSED BY STRUCTURE PROXIMITY IN EXTREME FLOWS

Forensic engineering field surveys of recent tsunamis (Saatcioglu et al. 2005, Chock 2013) highlighted the importance scour-related damage to structures located in coastal communities. To date, only a limited number studies have investigated interaction extreme hydrodynamic flows and groups structures, none studied scour around multiple interacting with each other. One example discussed by Yeh (2013) documented flow concentration between two tsunami-resistant buildings, leading deep hole them infrastructure failures onshore gap buildings. This shows that often crammed, lead complex flow-structure interactions, either amplification or reduction depending on relative position Nouri (2010) Thomas (2015) velocity caused proximity, which concentrated onto downstream monitored structure. Their results informed ASCE7 Ch.6 “Tsunami Loads Effect” standard nearby structures. However, this standard, there is currently no link factors their effects