The acceleration records of the downhole LSST array located in Lotung (Taiwan) were analyzed to study the seismic response of a deep cohensionless soft soil site. Two earthquakes characterized by maximum PGA respectively equal to 0.08 and 0.15g were considered to investigate the soil response to different levels of input motion. Three computers programs were used, i.e STRATA, DEEPSOIL and FLAC. The study focused on the relative reliability of the three codes with respect to the variations of the input soil parameters and differences in nonlinearity implementation. It has been found that, due to the dominant nonlinear behaviour at the site, the greatest uncertainties lie in the selection of the strain-dependent stiffness and damping soil properties
Numerical modelling of site response at the LSST downhole array in Lotung
PAGLIAROLI, Alessandro;
2015-01-01
Abstract
The acceleration records of the downhole LSST array located in Lotung (Taiwan) were analyzed to study the seismic response of a deep cohensionless soft soil site. Two earthquakes characterized by maximum PGA respectively equal to 0.08 and 0.15g were considered to investigate the soil response to different levels of input motion. Three computers programs were used, i.e STRATA, DEEPSOIL and FLAC. The study focused on the relative reliability of the three codes with respect to the variations of the input soil parameters and differences in nonlinearity implementation. It has been found that, due to the dominant nonlinear behaviour at the site, the greatest uncertainties lie in the selection of the strain-dependent stiffness and damping soil propertiesI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
