The Tunnel Structural Mode Frequency Characteristics Identification and Analysis Based on a Modified Stochastic Subspace Identification Method

<div>The time history of the acceleration for the measurement points B-1: (a) at nighttime; (b) at daytime.</div>

Shock and Vibration

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Figure 3

Figure 3: The Tunnel Structural Mode Frequency Characteristics Identification and Analysis Based on a Modified Stochastic Subspace Identification Method 

Figure 3 | The Tunnel Structural Mode Frequency Characteristics Identification and Analysis Based on a Modified Stochastic Subspace Identification Method 