Vibration Mitigation and Optimization Strategic of Track Design in Urban Rail Transit

摘要

Mitigation of metro train induced vibration and associated ground -borne noise was achieved efficiently by special track r measures. Those measures were categorized into three great kinds: fastener measure, sleeper measure, and basement measure. In r recent years, more and more building owners and engineers are concerned about clients ' complaints about vibration and noise r in -duced by metro trains ,and variant measures are adopted in track design. The experience of operation departments revealed r that the conventional design methods were deficient in enhancing the combina -tional dynamic property of coupled train-track r system. They mainly focus on detailed type selection of track, fasteners, turnouts, track bed, and professional design of r special tracks for different require -ments of environmental vibration mitigation. The computer simulation technology was r introduced to study geometric and stiffness irregularity ,transition sections, rail corrugation ,and optimization of dynamic r parameters of vibration isolation track in urban rail transit.