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6 papers · 1 filter
Seismic response in modern cities
Armand Wirgin
The proposed homogeneous flat-faced layer-like model of a city (termed overlayer), covering what is generally considered to be a dangerous site (from the point of view of seismic h…
Earthquakes in cities revisited
Armand Wirgin
During the last twenty years, a number of publications of theoretical-numerical nature have appeared which come to the apparently-reassuring conclusion that seismic motion on the g…
Numerical modeling of 1-D transient poroelastic waves in the low-frequency range
Guillaume Chiavassa, Bruno Lombard, Joël Piraux
Propagation of transient mechanical waves in porous media is numerically investigated in 1D. The framework is the linear Biot's model with frequency-independant coefficients. The c…
Seismic motion in urban sites consisting of blocks in welded contact with a soft layer overlying a hard half space: II. large and infinite number of identical equispaced blocks
Armand Wirgin, Jean-Philippe Groby
We address the problem of the response to a seismic wave of an urban site consisting of a large and infinite number () of identical, equispaced blocks overlying a soft laye…
Seismic motion in urban sites consisting of blocks in welded contact with a soft layer overlying a hard half space: I. Finite set of blocks
Jean-Philippe Groby, Armand Wirgin
We address the problem of the response to a seismic wave of an urban site consisting of non-identical, non-equispaced blocks overlying a soft layer underlain by a hard substrat…
2D ground motion at a soft viscoelastic layer/hard substratum site in response to SH cylindrical seismic waves radiated by deep and shallow line sources
Armand Wirgin, J. -P. Groby
We show, essentially by theoretical means, that for a site with the chosen simple geometry and mechanical properties (horizontal, homogeneous, soft viscoelastic layer of infinite l…