Vibration Data Probability Analysis Inside Residential Premises Adjacent to Underground Train Lines

Abstract

It is well known, that the shallow underground train lines appear to be the sources of significant vibrations that spreads through the soil and transfers to the building’s foundation that are located inside the technical zone of the underground lines. These vibrations then spread through the load-bearing structures of a building and produce vibrations of walls and floors, that influence both the technical state of the building and sanitary-hygienic conditions of human stay. The vibration generated inside the premises of residential and public areas due to underground train traffic has unsteady discontinuous character with a marked predominance of signal in the frequency band of 22.5 – 90 Hz, and repeats with a period determined by the schedule of underground train passes. This article deals with probability analysis of vibration data measured inside residential dwelling adjacent to shallow underground railway line. Measurements were acquired using 24-bit resolution digital multichannel acquisition system. Measurement were performed simultaneously in the basement, on the 4th and 5th floors of the dwelling. The duration of the measurements was set as 2 weeks of continuous recordings in order to obtain maximum data for probability analysis.