Premium
Earthquake response of non‐linear hysteretic soil systems
Author(s) -
Faccioli Ezio,
Ramirez Jorge
Publication year - 1976
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.4290040307
Subject(s) - radiation damping , structural engineering , random vibration , vibration , harmonic , stiffness , displacement (psychology) , excitation , beam (structure) , range (aeronautics) , geology , geotechnical engineering , mechanics , engineering , physics , acoustics , psychology , electrical engineering , psychotherapist , aerospace engineering , particle physics
The seismic amplification response of horizontally stratified soil deposits with Ramberg‐Osgood stress‐strain behaviour is analysed by a random‐vibration method. The deposit is modelled by a discrete shear beam system with radiation damping at the base. Parameters of an equivalent system are obtained by a harmonic linearization technique in which the actual relative displacement response at the surface is represented by a suitable sinusoidal motion. Despite the simplifications introduced, results for a number of different soil profiles and material description parameters are in good agreement with those given by numerical simulation techniques. Due to the much greater computational effort required by the latter, the proposed method seems preferable for predicting spectral amplification characteristics over a broad range of excitation intensities.