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4 results on '"Dana Amini"'

1. Seismic Response of Alluvial Valleys Subject to Oblique Incidence of Shear Waves

Author

Pooneh Maghoul, Behrouz Gatmiri, and Dana Amini

Subjects
021110 strategic, defence & security studies, Shear waves, 0211 other engineering and technologies, Spectral response, 020101 civil engineering, 02 engineering and technology, Building and Construction, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Geotechnical Engineering and Engineering Geology, Finite element method, 0201 civil engineering, Incident wave, Alluvium, Oblique incidence, Boundary element method, Seismology, Geology, Civil and Structural Engineering, Parametric statistics
Abstract

This paper aims to study the combined effects of incident wave angularity and geometrical characteristics on the seismic spectral response of curved valleys filled with alluvium. The parametric stu...

Published
2021

4. Impact of geometrical and mechanical characteristics on the spectral response of sediment-filled valleys

Author

Dana Amini-baneh and Behrouz Gatmiri

Subjects
Engineering, business.industry, Numerical analysis, Soil Science, Boundary (topology), Geometry, Near and far field, Geotechnical Engineering and Engineering Geology, Spectral line, Finite element method, Physics::Geophysics, Point (geometry), Geotechnical engineering, business, Electrical impedance, Civil and Structural Engineering, Parametric statistics
Abstract

A comprehensive numerical analysis of the seismic response and site period of curved alluvial valleys was performed by taking into account the characteristics of sedimentary materials. This study presents a criterion as a combination of the three following geometrical and geotechnical characteristics of curved valleys in order to provide a simple method for code implementation of complex site effects: depth ratio, filling ratio and impedance ratio. The parametric studies were performed by a HYBRID program combining finite elements in the near field and boundary elements in the far field (FEM/BEM). The amplification patterns under above-mentioned characteristics were determined at the central point of valleys. The results are shown in the form of response spectra. Different impedance coefficients of materials were considered to evaluate effects resulting from combination with filling ratio and geometrical parameters. Finally, a criterion is proposed in terms of engineering applications to assess the spectral response at the surface of curved alluvial valleys.

Published
2014

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