A Study of Personal Vibration Perceptibility of Buraphavithi Elevated Expressway
Abstract
This research studied the vibration level of elevated expressway structure affecting to personal perceptibility for 3 stations of Buraphavithi expressway including Chonburi, outer-ring road and Bangna stations. The purpose was to evaluate the vibration level affecting to the officers. The results could be useful for human resource administration and guideline for structural assessment of Buraphavithi expressway. Field testing was conducted for 12 hours for each station. Vertical acceleration response was measured at the first lane from the left-hand side which is for all vehicular types. Effects of relevant factors such as vehicle type, physical property of the station, vibration amplitudes at pavement and toll booth were considered. Evaluation on vibration perceptibility level was carried out from amplitude and frequency of acceleration response. The international criterions were selected for comparison. It was found that Chonburi station allowed the strongest level at “unpleasant”. The outer-ring road and Bangna stations allowed perceptibility level at “perceptible”. This was because the considered traffic lane of Chonburi station is at the cantilever end of the prestressed concrete box-girder section. The induced acceleration amplitude was therefore larger than other stations. Besides, the concrete base of the toll booth could reduce the amplitude of vibration for 17% in average. Moreover, the scenario that two vehicles at the adjacent lanes driving off the stations simultaneously could enhance vibration amplitude to be stronger, significantly.
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References
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