PREDICTION OF GROUND VIBRATION FROM RAILWAYS
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PREDICTION OF GROUND VIBRATION FROM RAILWAYS
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PREDICTION OF GROUND VIBRATION FROM RAILWAYS

Size: 3.4 MB | Format: PDF | Quality: Unspecified | Publisher: SP Swedish National Testing and Research Institute Acoustics SP REPORT 2000: 25 Borås 2000 | Year: 2000 | pages: 103


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Field measurements were carried out at two sites in southwest Sweden. Three, 3-directional accelerometers were used at three different distances from the middle of the railway track. All the accelerometers were mounted 50cm below the ground surface. Each accelerometer for the three directional accelerometers was mounted to represent one direction, the X direction is perpendicular to the railway track, the Y direction is parallel to the railway track and the Z direction is the vertical direction on the ground. The signal generated due to the passing trains were recorded by Sony Digital Recorder (DAT). Due to the fact that, this DAT has eight input channels and we used three 3-directional accelerometers, which
means nine accelerometers, one channel had to be omitted.
MATLAB was used to analyse the signals. The vibration levels were analysed using time weighting Sand the acceleration values were converted to velocity values. These measurements were carried out on three different types of trains: X2000, intercity, and freight trains.


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