000013562 001__ 13562
000013562 005__ 20161114165846.0
000013562 04107 $$aeng
000013562 046__ $$k2011-05-25
000013562 100__ $$aAuersch, L.
000013562 24500 $$aHigh-Speed Railway Tracks of a Surface, Bridge and Tunnel Line and Some Effects on the Train-Induced Bridge and Ground Vibrations

000013562 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013562 260__ $$bNational Technical University of Athens, 2011
000013562 506__ $$arestricted
000013562 520__ $$2eng$$aDifferent high-speed railway tracks have been analysed theoretically and experimentally, a ballasted track at a surface line, a slab track in a tunnel, and a ballasted track on a concrete bridge. Vehicle, track and ground vibration as well as their interaction are considered in a combined finite-element boundary-element (FEBEM) approach. The layered soil is calculated in frequency wavenumber domain and the solution for fixed or moving point or track loads follow as wavenumber integrals. The comparison of the dynamic compliances of the different tracks leads to an improved understanding of the different track elements. Certain maxima have been observed for certain train speeds and certain eigenmodes of the bridge. These maxima correlate with some maxima of the ground vibrations. The bridge and the ground vibrations are discussed with the axle-sequence of the train. The ground vibrations strongly depend on the regular and random inhomogeneity of the soil. The regular layering of the soil yields a cut-on and resonance phenomenon whereas the random inhomogeneity yields a scattering of the axle impulses which proved to be important for highspeed trains. All theoretical results are compared with measurements at a high-speed line.

000013562 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013562 653__ $$aTrack compliance, surface line, bridge track, tunnel track, ground vibration, layered soil, bridge resonance, train speed, axle sequence, track irregularities.

000013562 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013562 720__ $$aAuersch, L.
000013562 8560_ $$ffischerc@itam.cas.cz
000013562 8564_ $$s809214$$uhttp://invenio.itam.cas.cz/record/13562/files/287.pdf$$yOriginal version of the author's contribution as presented on CD, section: MS 09 Dynamic Effects On High-Speed Railway Tracks.
000013562 962__ $$r13401
000013562 980__ $$aPAPER