Research on vibration reaction and noise reduction for a super high-rise building near subway
The vibration and secondary radiation noise induced by subway's operation have significant influences on people's work and life.Based on one super high-rise building next to subway,three dimensional numerical models of the tunnel-soil-building system were established through MIDAS GTS NX to research the characteristics of the building's vibration and secondary radiation noise.Considering the pit support structure,the combined measure of vibration and noise reduction has been proposed,which includes the deepened underground diaphragm wall with rubber layer outside the fixed section,fertilizer trough backfilled with damping materials,and PVC damping cushion beneath the building's foundation.The mitigation performances were also discussed.The results show that the vibration and secondary radiation noise of the building vary with a trend of'large at high and low floors,small in the middle ones'.The proposed combined measure could mitigate the vibrations evidently,especially for those over 50Hz.The combined measure could obviously reduce the secondary radiation noise of each floor for the building.
subway's operationsuper high-rise buildingvibrationsecondary radiation noisevibration and noise reduction
万方数据
维普
