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

<div>The stability diagrams of the response by applying impulse along different directions at the subway tunnel: (a) radical; (b) longitudinal; (c) tangential directions.</div>

Shock and Vibration

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Figure 11

Figure 11: The Tunnel Structural Mode Frequency Characteristics Identification and Analysis Based on a Modified Stochastic Subspace Identification Method 

Figure 11 | The Tunnel Structural Mode Frequency Characteristics Identification and Analysis Based on a Modified Stochastic Subspace Identification Method 