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Dynamic discrimination method of seismic damage in tunnel portal based on improved wavelet packet transform coupled with Hilbert-Huang transform

Qi Wang,Ping Geng,Junbo Chen,Chuan He

Mechanical Systems and Signal Processing（2023）

Cited 17|Views0
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Abstract
•A dynamic discrimination method (DDM) for seismic damage in tunnel is proposed.•A new threshold function of the wavelet packet transform is proposed.•DDM permits for the position and time orientation of damage to the slope and tunnel.
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Key words
Tunnel portal,Damage identification,Wavelet packet transform,Threshold function,Hilbert-Huang transform (HHT),Seismic motion,Shaking table test
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