Amplification of Seismic Response in Poroviscoelastic Soil Layer

摘要: The time-dependent behaviour of saturated soils under static and dynamic loading is generally attributed to the flow-dependent viscous pore fluid. However, intrinsic energy dissipative effects from flow-independent viscoelastic solid skeleton are not always considered. In this study, effect on seismic amplification ground soil in vertical horizontal directions studied based a two-phase poroviscoelastic model. A generalized Kelvin–Voigt model used define effective stress soils, compressibilities both fluid seismic-induced displacements analytically derived shown depend layer thickness, properties, motion parameters. formulation neglecting could overestimate amplifications at surface soil. addition, responses demonstrated be closely related saturation state