000013159 001__ 13159
000013159 005__ 20161114160329.0
000013159 04107 $$aeng
000013159 046__ $$k2009-06-22
000013159 100__ $$aPsarropoulos P., N.
000013159 24500 $$aDynamic interaction of retaining walls with retained soil and structures

000013159 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013159 260__ $$bNational Technical University of Athens, 2009
000013159 506__ $$arestricted
000013159 520__ $$2eng$$aRetaining systems are widely used worldwide for serving various purposes in structures and infrastructures (embankments, bridges, ports, etc). The seismic response of various types of walls that support a single soil layer has been examined by a number of researchers in the past. Nevertheless, the dynamic interaction of the retaining walls with the structures that they are usually retained has not been investigated yet. It is evident, however, that during a seismic event the dynamic response of each component of this complex system (wall, soil, and superstructure) may affect substantially the response of the rest, and vice versa. The phenomenon of dynamic wall–soil–structure interaction (DWSSI) is a rather complicated issue that includes: (a) the dynamic interaction between a wall and a retained single soil layer, and (b) the “standard” dynamic soil–structure interaction (DSSI) of a structure with the underlying soil. In the present study, using numerical two-dimensional simulations, the influence of the wall characteristics (flexibility and smoothness) and its distance from the structure on the soil impedances (springs and dashpots) and on the distress of a cantilever wall are addressed. Emphasis is given on the variation of the soil impedance with the distance from the wall and with the exciting steady-state frequency. Subsequently, a structure founded on the retained soil is included in the numerical models, as a single-degree-of-system (SDOF). Despite the fact that there exist many open issues, the numerical results of the current study provide a clear indication of the direct dynamic interaction between a retaining wall and its retained structures. This justifies the necessity for a more elaborate consideration of these interrelated phenomena on the seismic design not only of the retaining walls but of the nearby structures as well, since the aforementioned dynamic interaction issues are not considered with adequate realism in the modern seismic norms.

000013159 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013159 653__ $$aDynamic interaction, soil impedance, dynamic distress, retaining walls. Abstract. Retaining systems are widely used worldwide for serving various purposes in structures and infrastructures (embankments, bridges, ports, etc). The seismic response of various types of walls that support a single soil layer has been examined by a number of researchers in the past. Nevertheless, the dynamic interaction of the retaining walls with the structures that they are usually retained has not been investigated yet. It is evident, however, that during a seismic event the dynamic response of each component of this complex system (wall, soil, and superstructure) may affect substantially the response of the rest, and vice versa. The phenomenon of dynamic wall–soil–structure interaction (DWSSI) is a rather complicated issue that includes: (a) the dynamic interaction between a wall and a retained single soil layer, and (b) the “standard” dynamic soil–structure interaction (DSSI) of a structure with the underlying soil. In the present study, using numerical two-dimensional simulations, the influence of the wall characteristics (flexibility and smoothness) and its distance from the structure on the soil impedances (springs and dashpots) and on the distress of a cantilever wall are addressed. Emphasis is given on the variation of the soil impedance with the distance from the wall and with the exciting steady-state frequency. Subsequently, a structure founded on the retained soil is included in the numerical models, as a single-degree-of-system (SDOF). Despite the fact that there exist many open issues, the numerical results of the current study provide a clear indication of the direct dynamic interaction between a retaining wall and its retained structures. This justifies the necessity for a more elaborate consideration of these interrelated phenomena on the seismic design not only of the retaining walls but of the nearby structures as well, since the aforementioned dynamic interaction issues are not considered with adequate realism in the modern seismic norms.

000013159 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013159 720__ $$aPsarropoulos P., N.$$iPapazafeiropoulos, G.$$iTsompanakis, Y.
000013159 8560_ $$ffischerc@itam.cas.cz
000013159 8564_ $$s621387$$uhttps://invenio.itam.cas.cz/record/13159/files/CD212.pdf$$yOriginal version of the author's contribution as presented on CD, section: Modeling and simulations of dynamic soil- structure interaction - i (MS).
000013159 962__ $$r13074
000013159 980__ $$aPAPER