000015826 001__ 15826
000015826 005__ 20161115135330.0
000015826 04107 $$aeng
000015826 046__ $$k2013-06-12
000015826 100__ $$aFrancois, S.
000015826 24500 $$aDynamic Soil-Structure Interaction Analysis of a Telescope At the Javalambre Astrophysical Observatory

000015826 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015826 260__ $$bNational Technical University of Athens, 2013
000015826 506__ $$arestricted
000015826 520__ $$2eng$$aThis paper reports on the dynamic soil-structure analysis of a telescope pier of an astrophysical laboratory in the Sierra de Javalambre, Teruel (Spain). Vibration control in the design stage is of prime concern, since astrophysical observations may be hindered by mechanical vibration of the sensitive optics of the telescope. These vibrations may result from wind loading on the telescope dome, transferred through the foundation to the telescope. Therefore, the manufacturer of the telescope has imposed a minimal resonance frequency of 10 Hz for the supporting structure. For a massive construction such as a telescope pier, this resonance frequency may be significantly influenced by the effects of dynamic soil-structure interaction. The telescope is mounted on a concrete pier with a height of 15.25 m, founded on 73 reinforced concrete micro-piles with a diameter of 0.40 m. The dynamic soil characteristics at the site have been determined by means of a down-hole test. The effect of dynamic soil-structure interaction is studied using a coupled finite element - boundary element model of the telescope pier - foundation soil system. The response of the telescope is computed for harmonic loading at the top of the telescope pier. Results demonstrate that the effect of dynamic soil-structure interaction is significant. An analysis that disregards dynamic soil-structure interaction results a predicted resonance of 14.28 Hz while a fully coupled analysis predicts a resonance frequency of 11.2 Hz.

000015826 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015826 653__ $$aDynamic soil-structure interaction, pile foundations, vibrations

000015826 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015826 720__ $$aFrancois, S.$$iGalvin, P.$$iMuseros, P.$$iLombaert, G.$$iDegrande, G.
000015826 8560_ $$ffischerc@itam.cas.cz
000015826 8564_ $$s2955042$$uhttps://invenio.itam.cas.cz/record/15826/files/1515.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-RS 29 SOIL-STRUCTURE INTERACTION
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000015826 962__ $$r15525
000015826 980__ $$aPAPER