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- W2378612852 abstract "Taking advantage of such precious test conditions as small radius curve,no interference vibration source from ground and high density measuring points,the ground vibration measurement on top of a curve section of Beijing Metro was conducted by high sensitivity data collection and analysis system.On the basis of test data,the propagation laws of ground vibration acceleration induced by metro train passing the curve section were investigated in the domains of time and frequency.Results indicate that in the range of 100 m from tunnel center line,the time history peak value of ground vibration acceleration induced by metro operation is mainly in 10-2 m·s-2 order of magnitude,which is much larger than 10-4 m·s-2 order of magnitude under background vibration.The horizontal vibration is 2 to 4 times of the vertical vibration in the range of 50 m from tunnel center line.It is suggested that both the vertical and horizontal vibration should be simultaneously taken into account in the environmental assessment related to the curve section of metro.The main frequency components of horizontal vibration acceleration are 30 to 120 Hz.It is recommended that broader frequency analysis range should be selected in the tests and simulations concerning the curve section of metro.The spectrum amplitudes of ground vibration acceleration attenuate in the form of fluctuation with the increase of the distance from tunnel center line." @default.
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- W2378612852 date "2012-01-01" @default.
- W2378612852 modified "2023-09-24" @default.
- W2378612852 title "Propagation Law of Ground Vibration in the Curve Section of Metro Based on In-Situ Measurement" @default.
- W2378612852 hasPublicationYear "2012" @default.
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