Abstract
A set of integral floating vibration isolation methods was developed in this study to remedy the lack of effective measures for over-track buildings. The effect of vibration isolation pads was investigated experimentally; the resulting field measurements were used to determine the time-frequency dynamic responses of vehicle-induced vibration and isolation effects. The characteristics of the vibration source appear to significantly affect the frequency domain distribution of vibration inside the building. When no vibration isolation measures are taken, the internal vibration of the cultural center exceeds the limit. BSW vibration isolation pads R480, R550, and R800 are effective in the frequency range of 16–80 Hz. The vibration isolation level in the Z direction is between 5.6 and 7.3 dB. After floating vibration isolation treatment, the maximum Z vibration level of the cultural center is 56.4 dB in daytime hours and 52.9 dB at night, which satisfies the relevant standard. The proposed method is shown to effectively hinder the structural vibration caused by subways on surrounding buildings.
Highlights
Urban rail transportation systems have developed rapidly in recent years
As road networks grow increasingly dense and urban lands grow increasingly scarce, many over-track buildings have been constructed along urban rail routes.[1,2,3,4]
Rail travel provides citizens with convenient transportation and improves the usage rate of urban lands, but the vibration caused by trains spreads through the surrounding soil and affects nearby buildings
Summary
Urban rail transportation systems have developed rapidly in recent years. As road networks grow increasingly dense and urban lands grow increasingly scarce, many over-track buildings have been constructed along urban rail routes.[1,2,3,4] Rail travel provides citizens with convenient transportation and improves the usage rate of urban lands, but the vibration caused by trains spreads through the surrounding soil and affects nearby buildings. Field tests were conducted to analyze the time-frequency dynamic responses of floating vibration isolation buildings as subways pass different time periods to evaluate the vibration isolation effects.
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