000013158 001__ 13158
000013158 005__ 20161114160329.0
000013158 04107 $$aeng
000013158 046__ $$k2009-06-22
000013158 100__ $$aTsompanakis, Y.
000013158 24500 $$aSeismic response of sliding structures

000013158 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013158 260__ $$bNational Technical University of Athens, 2009
000013158 506__ $$arestricted
000013158 520__ $$2eng$$aThe accumulation of slip displacements may arise during the seismic response of engineering structures. The most commonly used procedure to estimate their magnitude is the well known sliding block model proposed by Newmark (1965). This model and its subsequent modifications proposed in the literature have been useful in evaluating the seismic response of various structural and geotechnical applications, such as footings, seismic isolation systems, earth and concrete gravity dams, embankments, retaining walls, reinforced slopes and waste landfills. The main parameters that have been investigated are the flexibility of the sliding system, the geometry of the sliding mass (for the case of earth structures), the nonlinear behaviour, the interface shear strength (generally described as Coulomb friction) and the characteristics of the excitation, namely, the maximum applied acceleration and the frequency content. The aim of the current study is to demonstrate the most important issues related to the seismic response of sliding structures. For this purpose, several simple models were examined both analytically and numerically. Initially, analytical expressions of the occurrence conditions of sliding were derived taking into account the prevailing factors of the problem. These expressions are very useful for the seismic design of structures, since the accumulation of permanent displacements may be prohibitive for some “sensitive” structures. Finally, parametric finite element analyses demonstrate the impact of two important and commonly neglected factors, i.e. the two-dimensional response of earth structures and the initial stress state. The significance of these parameters is demonstrated via a direct comparison with simple models. The present study provides an insight into the fundamental principles governing the seismic response of sliding structures.

000013158 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013158 653__ $$aseismic design, slip displacements, sliding-block model, coupled and decoupled methods. Abstract. The accumulation of slip displacements may arise during the seismic response of engineering structures. The most commonly used procedure to estimate their magnitude is the well known sliding block model proposed by Newmark (1965). This model and its subsequent modifications proposed in the literature have been useful in evaluating the seismic response of various structural and geotechnical applications, such as footings, seismic isolation systems, earth and concrete gravity dams, embankments, retaining walls, reinforced slopes and waste landfills. The main parameters that have been investigated are the flexibility of the sliding system, the geometry of the sliding mass (for the case of earth structures), the nonlinear behaviour, the interface shear strength (generally described as Coulomb friction) and the characteristics of the excitation, namely, the maximum applied acceleration and the frequency content. The aim of the current study is to demonstrate the most important issues related to the seismic response of sliding structures. For this purpose, several simple models were examined both analytically and numerically. Initially, analytical expressions of the occurrence conditions of sliding were derived taking into account the prevailing factors of the problem. These expressions are very useful for the seismic design of structures, since the accumulation of permanent displacements may be prohibitive for some “sensitive” structures. Finally, parametric finite element analyses demonstrate the impact of two important and commonly neglected factors, i.e. the two-dimensional response of earth structures and the initial stress state. The significance of these parameters is demonstrated via a direct comparison with simple models. The present study provides an insight into the fundamental principles governing the seismic response of sliding structures.

000013158 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013158 720__ $$aTsompanakis, Y.$$iZania, V.$$iPsarropoulos P., N.
000013158 8560_ $$ffischerc@itam.cas.cz
000013158 8564_ $$s436242$$uhttps://invenio.itam.cas.cz/record/13158/files/CD211.pdf$$yOriginal version of the author's contribution as presented on CD, section: Computational methods in geotechnical earthquake engineering - ii.
000013158 962__ $$r13074
000013158 980__ $$aPAPER