A coupled FE-BE method for modelling the dynamic interaction of some important structural elements of buildings resting on a viscoelastic 3-D halfspace is presented. A displacement-based continuum approach is adopted for the structure and on this basis, a discrete model is derived by using a hierarchical finite element formulation. The frequency-domain boundary element method is used to represent the 3-D halfspace. The set of equations governing the response of the coupled soil-structure system to harmonic loads acting on the structure is given. A remarkable shift of the resonance frequencies, with respect to a structure with a clamped lower end, is observed. The effects of radiation and material damping are shown for different soil materials and different characteristics of the structure.
Dynamic response analysis of tall buildings on viscoelastic soil
CAPUANI, Domenico
1994
Abstract
A coupled FE-BE method for modelling the dynamic interaction of some important structural elements of buildings resting on a viscoelastic 3-D halfspace is presented. A displacement-based continuum approach is adopted for the structure and on this basis, a discrete model is derived by using a hierarchical finite element formulation. The frequency-domain boundary element method is used to represent the 3-D halfspace. The set of equations governing the response of the coupled soil-structure system to harmonic loads acting on the structure is given. A remarkable shift of the resonance frequencies, with respect to a structure with a clamped lower end, is observed. The effects of radiation and material damping are shown for different soil materials and different characteristics of the structure.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
