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Shock and Vibration
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Shock and Vibration
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2018
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Article
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Tab 3
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Research Article
The Influence of the Track Parameters on Vibration Characteristics of Subway Tunnel
Table 3
Modification value of vertical effective acceleration within the center frequency.
1/2 octave bands center frequency (Hz)
1
2
4
8
16
31.5
63
90
Vertical modified vibration power level (dB)
−6
−3
0
0
−6
−12
−18
−21