000015719 001__ 15719
000015719 005__ 20161115135327.0
000015719 04107 $$aeng
000015719 046__ $$k2013-06-12
000015719 100__ $$aMedina, C.
000015719 24500 $$aA Procedure for Evaluating the Soil-Structure Interaction Effects on the System Period and Damping of Pile-Supported Structures

000015719 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015719 260__ $$bNational Technical University of Athens, 2013
000015719 506__ $$arestricted
000015719 520__ $$2eng$$aSoil-structure interaction involves kinematic and inertial effects that affect the dynamic behaviour of the structures. Thus, a proper assessment of their dynamic response requires the development of models that incorporate, in a rigorous manner, the interaction between the structure and the soil on which it is founded. These interaction phenomena depend on factors such as: the foundation type, its geometry and embedment depth, the soil type and stratigraphy as well as the characteristics of the structure. In line with other authors’ studies for shallow [7] and embedded foundations [15], a simple substructuring model of soil-structure interaction in the frequency domain is proposed herein to evaluate the influence of these factors on the dynamic response of structures founded on pile groups when subjected to seismic loads. A BEM-FEM coupling model [5] is used to compute the impedance functions and the kinematic interaction factors. A simple and stable procedure is developed in order to estimate the period and damping of structures supported by different configurations of pile groups considering soil-structure interaction. For this purpose, several modifications are introduced in the strategy presented by Avil´es and P´erez-Rocha [15] for embedded foundations. A diagonal impedance matrix that takes into account the cross-coupled impedances of pile groups, which allows getting manageable equations, is obtained in the lines of Maravas et al. [16] in the case of single piles. All equations are expressed in terms of dimensionless parameters. An analysis of the influence of some of the main characteristics of the foundation affecting the system response is accomplished. The results show that cross-coupled impedances and soil-structure interaction effects should not be neglected.

000015719 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015719 653__ $$asoil-structure interaction, piled foundations, effective period, effective damping.

000015719 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015719 720__ $$aMedina, C.$$iAznarez, J.$$iPadron, L.$$iMaeso, O.
000015719 8560_ $$ffischerc@itam.cas.cz
000015719 8564_ $$s683518$$uhttps://invenio.itam.cas.cz/record/15719/files/1324.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-RS 29 SOIL-STRUCTURE INTERACTION
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000015719 962__ $$r15525
000015719 980__ $$aPAPER