A spatial train-track coupled dynamic model,3D finite element models of track-soil-building system,as well as building structural noise analysis model are established to evaluate the structural vibrations and noises of airport terminal building and a ground traffic center(GTC)induced by high-speed and subway trains.The isolation effectiveness of building foundation isolation measures is also investigated.The results show that,before implementing foundation isolation measures,the maximum Z-vibration level and structural noise of the GTC building reached 74.4 dB and 45.3 dB(A),while those in the terminal building were 74.6 dB and 46.6 dB(A).All the values exceed the limits specified in the standard GB 10070-1988 and JGJ/T 170-2009.After adopting foundation isolation measures,the Z-vibration levels of the GTC and terminal were decreased by 6.5～10 dB and 6～9.9 dB respectively,and their structural noise was decreased by 9.8～11.2 dB(A)and 6.4～10.5 dB(A),both meeting the nighttime limits specified in standards GB 10070-1988 and JGJ/T 170-2009.The research findings have practical guiding significance for the integrated development and construction of railways and airport terminals.
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