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Title: Multi-building interactions and site-city effect: an idealized experimental model
Authors: Schwan, Logan
Boutin, Claude
Dietz, Matthew
Padron, Luis 
Bard, Pierre Yves
Ibraim, Erdin
Maeso, Orlando 
Aznárez, Juan J. 
Taylor, Colin
UNESCO Clasification: 250705 Sismología y prospección sismica
250618 Sedimentología
251107 Ingeniería de suelos
Keywords: Mode Shape
Surface Impedance Inert Mass Scale Separation Foam Block
Inert Mass
Scale Separation
Foam Block
Issue Date: 2015
Publisher: 1573-6059
Journal: Geotechnical, Geological and Earthquake Engineering 
Abstract: This chapter aims at identifying, describing and quantifying multi-building interactions and site-city effects through experimental, theoretical and numerical crossed-analysis. Multiple Structure-Soil-Structure interactions are investigated through an idealized experimental model of a city on a soft layer the properties of which are simple enough to be reproduced in numerical and theoretical models. The experimental set-up is designed to provide a good matching between the fundamental frequencies of the city and of the layer. Experimental results show (i) drastic changes in the layer’s response with two low amplitude resonance peaks favorable to longer coda and beatings and (ii) unconventional depolarization effects. The resulting data is compared with the theoretical city-impedance model derived by homogenization methods (Boutin and Roussillon, Bull Seismol Soc Am 94(1):251–268, 2004) and with a 2D hybrid BEM-FEM numerical model (Padrón et al., Cálculo de estructuras de barras incluyendo efectos dinámicos de interacción suelo-estructura. Master thesis, Universidad de Las Palmas de G.C., Spain., 2004). The specific features of multiple interactions are successfully reproduced by both models providing a qualitative and quantitative agreement with experimental results and with one another.
ISSN: 1573-6059
DOI: 10.1007/978-3-319-10136-1_28
Source: Geotechnical, Geological and Earthquake Engineering[ISSN 1573-6059],v. 35, p. 459-476
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