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Titolo: Some cornerstones of dynamic soilstructure interaction
Autore: Wolf, JP; Song, CM;
 Indirizzi:
 Swiss Fed Inst Technol, Inst Hydraul & Energy, CH1015 Lausanne, Switzerland Swiss Fed Inst Technol Lausanne Switzerland CH1015 ausanne, Switzerland
 Titolo Testata:
 ENGINEERING STRUCTURES
fascicolo: 1,
volume: 24,
anno: 2002,
pagine: 13  28
 SICI:
 01410296(200201)24:1<13:SCODSI>2.0.ZU;2Y
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 FINITEELEMENT METHOD; FOUNDATIONS;
 Keywords:
 soilstructure interaction; Sommerfeld radiation condition; dimensionless frequency; cones; springdashpotmass models; dampingsolvent extraction; forecasting; scaled boundary finiteelement method;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Engineering, Computing & Technology
 Citazioni:
 15
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Wolf, JP Swiss Fed Inst Technol, Inst Hydraul & Energy, CH1015 Lausanne, Switzerland Swiss Fed Inst Technol Lausanne Switzerland CH1015 Switzerland



 Citazione:
 J.P. Wolf e C.M. Song, "Some cornerstones of dynamic soilstructure interaction", ENG STRUCT, 24(1), 2002, pp. 1328
Abstract
Salient features of dynamic soilstructure interaction are discussed. A criterion for the presence of radiation damping in a site is formulated. The radiation condition at infinity of outwardly propagating energy can for certain sites correspond to incoming waves. The consequences that the dynamic behaviour of the unbounded soil depends on the dimensionless frequency, which is proportional to the product of the frequency and the radial coordinate, are discussed. The partition of the radiated energy of surface waves andof body waves for increasing frequency is addressed. In addition, procedures to analyse the dynamic soilstructure interaction are outlined, ranging from the approximate simple physical models (cones, springdashpotmass representations) for the soil to the dampingsolvent extraction method and to the rigorous forecasting method and the scaled boundary finiteelement method. Convolution integrals can be avoided by constructing a dynamic system with a finite number of degrees of freedom for the soil. Extensions for moving concentrated loads and an increase in efficiency using a reduced set of base functions are presented. The damping ratio of an equivalent onedegreeoffreedom system representing the interaction of the structure with the soil for a horizontal earthquake reflects the effect of the cutoff frequencyfor a soil layer. The same simple model can be extended to consider the partial uplift of a basemat for seismic excitation (nonlinear soilstructure interaction). Twodimensional versus threedimensional foundation modellingis examined. (C) 2001 Elsevier Science Ltd. All rights reserved.
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Documento generato il 03/04/20 alle ore 10:55:58