000013370 001__ 13370
000013370 005__ 20161114160338.0
000013370 04107 $$aeng
000013370 046__ $$k2009-06-22
000013370 100__ $$aGazetas, G.
000013370 24500 $$aNonlinear inelastic seismic response of slender bridge pier on surface foundation

000013370 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013370 260__ $$bNational Technical University of Athens, 2009
000013370 506__ $$arestricted
000013370 520__ $$2eng$$aThe paper highlights the results of a numerical study of the seismic response of a tall bridge-pier type structure supported on surface foundation. Both the structure and the soil are treated as inelastic materials ⎯ the former capable of developing plastic hinging at its column base, the latter capable of mobilizing bearing-capacity type “failure” mechanisms. Moreover, the geometric nonlinearity arising from the uplifting of the foundation due to the large overturning transmitted moment is treated rigorously. Exciting a typical such system with two actual earthquake records, it is shown that whereas a conventionally-designed system may suffer substantial structural plastic permanent rotation at the column base (and thereby even collapse in a very strong event), a more-daring unconventional design which specifically allows inelasticity/nonlinearity in the soil and the soil–foundation interface to take place suffers only permanent settlement and in some cases permanent tilt of the foundation without suffering any structural distress.

000013370 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013370 653__ $$asoil–structure interaction ; bridge pier ; foundation yielding ; plastic hinge ; uplifting ; performance–based design Abstract. The paper highlights the results of a numerical study of the seismic response of a tall bridge-pier type structure supported on surface foundation. Both the structure and the soil are treated as inelastic materials ⎯ the former capable of developing plastic hinging at its column base, the latter capable of mobilizing bearing-capacity type “failure” mechanisms. Moreover, the geometric nonlinearity arising from the uplifting of the foundation due to the large overturning transmitted moment is treated rigorously. Exciting a typical such system with two actual earthquake records, it is shown that whereas a conventionally-designed system may suffer substantial structural plastic permanent rotation at the column base (and thereby even collapse in a very strong event), a more-daring unconventional design which specifically allows inelasticity/nonlinearity in the soil and the soil–foundation interface to take place suffers only permanent settlement and in some cases permanent tilt of the foundation without suffering any structural distress.

000013370 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013370 720__ $$aGazetas, G.$$iAnastasopoulos, G.$$iLoli, M.$$iGerolymos, N.
000013370 8560_ $$ffischerc@itam.cas.cz
000013370 8564_ $$s467413$$uhttps://invenio.itam.cas.cz/record/13370/files/CD547.pdf$$yOriginal version of the author's contribution as presented on CD, section: Computational methods in geotechnical earthquake engineering - i.
000013370 962__ $$r13074
000013370 980__ $$aPAPER