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  • Auersch, Lutz (2)
  • Said, Samir (2)

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  • 2018 (1)
  • 2013 (1)

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  • Beitrag zu einem Tagungsband (2) (entfernen)

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  • Soil properties (2) (entfernen)

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  • 7 Bauwerkssicherheit (2)
  • 7.2 Ingenieurbau (2)

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Prediction of explosion-induced ground and building vibrations - measured wave velocities, transfer functions and attenuation (2018)
Said, Samir ; Auersch, Lutz
Explosion-induced ground vibrations have been measured at several places. Results about the wave propagation are shown in this contribution. The particle velocities of the soil have been measured at up to 1000 m distance from the explosion and are presented as time records (seismograms) and one-third octave band spectra (transfer functions). The results are compared with the results of hammer impacts. The seismograms clearly show different wave types, compressional waves of the air, the water and the soil, and the Rayleigh wave. The hammer impacts yield good results up to 100 m and incorporate higher frequencies at about 50 Hz, whereas the explosion results in a ground vibration with frequencies around 10 Hz and a longer range of influence. Explosion and hammer excitations are evaluated for the wave velocities of the soil by using the wavenumber and the spatial auto-correlation method. The attenuation of the ground vibration amplitudes A with distance r can well be presented by a power law A ~ r -q. This type of amplitude-distance law and the corresponding power q > 1 are substantiated in the contribution. The influence of the charge weight W is evaluated as an additional power law A ~ W -p for each measuring site. The power is found quite similarly around q  0.6 as all sites have a medium soft soil such as sand and clay. The obtained amplitude-charge-distance law can be used to predict the explosion-induced ground and building vibrations at other sites.
The influence of soil properties on the ground vibration due to railway traffic and other sources - the comparability of different sites (2013)
Auersch, Lutz ; Said, Samir
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