Prediction of wave propagation in soils using semi-analytic method
Authors
Term
4. term
Education
Publication year
2017
Submitted on
2017-06-16
Pages
125
Abstract
Ground-borne noise induced by trains and construction works has become day by day a constant issue to the tranquility of urban areas. Population increase and city developments mean that more areas will be subjected to uncomfortable noises and the need for tranquility is ever more necessary. So far these induced vibrations have been hard and expensive to predict, thus less time consuming and more accurate computational models are required. This is also the focus of this master’s thesis where a semi-analytical model developed by several researchers will be evaluated. The semi-analytic model is used to predict the propagation of waves in a media due to vibrations from external source and the impact they have on the surrounding area. A thorough investigation of the model is performed by taking into account the influence of the soil properties in the dynamic amplification. This master’s thesis also includes an experimental part, where geophones are used to measure the vibrations from trains at a location specified by COWI. The data obtained from the measurements is used to find the properties of the soil and further validate the semi-analytic method. To conclude, a comparison between the measured vibrations and the ones simulated from the model are analysed and compared in order to obtain a closer fit as possible.
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