Fig. 1. Flow chart of ground vibration data processing

Fig. 2. Waveform diagram of vertical vibration velocity signal of time domain

Fig. 3. Diagram of displacement power spectral density of indoor and outdoor

Fig. 4. Diagram of displacement power spectral density

Fig. 5. Spectra variation trend chart of vibration integrated displacement

Fig. 6. Variation chart of effective value of vibration displacement per minute with time over a 1~100 Hz frequency band

Fig. 7. Comparation diagram of the max-displacement corresponding PSD and the average PSD

Fig. 8. Variation of vertical vibration RMS displacement with time at different frequency bands (a) Original, (b) Zoom in

Fig. 9. Variation of effective value of vibration displacement with time during one week (a) Original, (b) Zoom in

Fig. 10. Variation of vertical vibration RMS displacement with time at different frequency bands