Numerical Simulation of Seismic Liquefaction for Treasure Island Site

Abstract By conducting numerical simulations of Treasure Island site in 1989 Loma Prieta earthquake, the Hilbert-Huang transform was used to study soil liquefaction. The UBC3D-PLM constitutive model simulate dynamic behavior sand, non-liquefied simulated by Hardening Small Strain model, and seismic information recorded PEER database for deconvolution analysis one-dimensional equivalent linear method, within motion applied. Rayleigh damping is simulation process, ratio 5%. Based on analysis, it concluded that can effectively soil. amplification peak acceleration from bottom Sandy fill ground surface, low-frequency content shifted due liquefaction process transmission high-frequency identified at surface.