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Effects of soil–structure interaction on the dynamic properties and seismic response of piled structures
Abstract This paper presents a simple and stable procedure for the estimation of periods and dampings of piled shear buildings taking soil–structure interaction into account. A substructuring methodology that includes the three-dimensional character of the foundations is used. The structure is analyzed as founded on an elastic homogeneous half-space and excited by vertically incident S waves. The strategies proposed in the literature to estimate the period and damping are revised, and a modified strategy is proposed including crossed impedances and all damping terms. Ready-to-use graphs are presented for the estimation of flexible-base period and damping in terms of their fixed-base values and the system configuration. Maximum shear forces together with base displacement and rocking peak response are also provided. It is shown that cross-coupled impedances and kinematic interaction factors need to be taken into account to obtain accurate results for piled buildings.
Graphical abstract Display Omitted
Highlights System period and damping considering soil–structure-interaction are estimated. Modified simple and stable procedure is proposed for pile-supported structures. Cross-coupled impedances and kinematic interaction factors cannot be neglected. Influences of the main parameters involved are studied. Ready-to-use graphs are provided for the flexible base system period and damping.
Effects of soil–structure interaction on the dynamic properties and seismic response of piled structures
Abstract This paper presents a simple and stable procedure for the estimation of periods and dampings of piled shear buildings taking soil–structure interaction into account. A substructuring methodology that includes the three-dimensional character of the foundations is used. The structure is analyzed as founded on an elastic homogeneous half-space and excited by vertically incident S waves. The strategies proposed in the literature to estimate the period and damping are revised, and a modified strategy is proposed including crossed impedances and all damping terms. Ready-to-use graphs are presented for the estimation of flexible-base period and damping in terms of their fixed-base values and the system configuration. Maximum shear forces together with base displacement and rocking peak response are also provided. It is shown that cross-coupled impedances and kinematic interaction factors need to be taken into account to obtain accurate results for piled buildings.
Graphical abstract Display Omitted
Highlights System period and damping considering soil–structure-interaction are estimated. Modified simple and stable procedure is proposed for pile-supported structures. Cross-coupled impedances and kinematic interaction factors cannot be neglected. Influences of the main parameters involved are studied. Ready-to-use graphs are provided for the flexible base system period and damping.
Effects of soil–structure interaction on the dynamic properties and seismic response of piled structures
Medina, Cristina (author) / Aznárez, Juan J. (author) / Padrón, Luis A. (author) / Maeso, Orlando (author)
Soil Dynamics and Earthquake Engineering ; 53 ; 160-175
2013-07-09
16 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2013
| British Library Online Contents | 2015