Seismic Waves Scattering Impact through Tunnel Excavation on Adjacent Monuments Subjected to Far Field Earthquakes
Abstract: The study of the
effect of seismic wave scattering has attracted extensive attention in the past
couple of decades especially in infrastructures like tunnels. A seismic wave,
meeting the tunnel, can generate scattering which, in most cases, may incur
damages in adjacent structures. In this study, using Finite Element Method
(FEM), the effect of seismic wave scattering in far field has been
investigated. The twin tunnels of Shiraz subway system are selected as the case
study in this research and three far field seismic waves were chosen for time history
analyses. Investigating the normal mode (before tunnel construction) in
comparison to the excavation mode (after tunnel construction) enables
calculation of the effect of displacement in adjacent structures. The analysis
results indicate there is a significant difference between before and after
tunnel construction (P-value<0.05). Accordingly, the influence of
constructing a tunnel on adjacent surface structures is very important for
tunnel design.
Author: Ghobakhloo E., Pourlak
M., Razmkhah A
Journal Code: jptsipilgg150013
