2014/02/10 by Maria Paola Santisi D'Avila, Maria Paola Santisi d’Avila, D'Avila, Maria Paola Santisi +5
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #FOS: Physical sciences #Geophysics (physics.geo-ph) #Geotechnical Engineering and Soil Mechanics #Geotechnical Engineering and Underground Structures #Seismic Imaging and Inversion Techniques #Seismic Performance and Analysis #physics.geo-ph
paper · pdf · doi:10.48550/arxiv.1402.2887
18th International Conference on Soil Mechanics and Geotechnical Engineering, France (2013)
arxiv created 2014/02/10 · openalex publication_date 2014/02/10 · arxiv updated 2014/02/13 · openalex created_date 2020/02/14 · openalex updated_date 2026/07/29
We propose a one-directional three-component (1D-3C) approach to model the unidirectional (1D) propagation of a three component (3C) earthquake for seismic response analyses of horizontal multilayer soils, considering a 3D nonlinear constitutive behaviour for soils. An elasto-plastic cyclic constitutive behaviour of the Masing-Prandtl-Iwan type, using just the shear modulus decay curve for soil characterization, is implemented in a finite element scheme. Seismic response of soil profiles appears dependent on incident wave polarization, elastic and dynamic properties of medium and seismic impedance contrast between soil layers. Propagating a 3C signal induces a multiaxial stress interaction decreasing soil strength and increasing nonlinear effects. Soil profiles in the Tohoku area (Japan) are loaded by seismic signals recorded at outcrops or downhole, during the 2011 Tohoku earthquake. The nonlinear seismic response of each soil profile, represented in terms of acceleration, hysteresis loops and stress and strain profiles with depth, is compared in both cases of superposition of three one-component propagation effects (1D-1C) and 1D-3C.