9 research outputs found

    Prediction of Vibrations of Footings for Highly Sensitive Devices

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    When planning foundations for devices sensitive to vibrations the planned location should be investigated for vibrations. These investigations have to include the existing sources in the vicinity as for instance street or rail traffic as well as exciting devices to be installed at the same building site like compressor stations or other machines. The present paper shows a procedure to estimate the vibrations at the planned locations for sensitive devices. The procedure includes investigations of the dynamic soil properties, the decrease of the vibrations with distance, and the transfer functions of rigid footings. It takes into consideration stochastic excitation as well as harmonic ones. As the result of this procedure it will be possible to state minimum admissible distances and to specify probabilities of exceeding the given boundary values for admissible vibrations
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