Unsupervised Structural Damage Detection Technique Based on a Deep Convolutional Autoencoder

Table 3

Damage patterns considered for the BHM benchmark structure [38].

Damage patterns	Description
1	The connection of the transverse member into node 7 does not sustain the major moment any longer.
2	In addition to pattern (1), the connection plates at node 7 are removed.
3	The beam-column connection in node 19 has lost its moment releases and has turned into a fixed connection.
4	Similar to damage pattern (3) but for nodes 19 and 38.
5	Reduction of 10% on the spring constant in the springs located at the supports of the bridge.
6	Reduction of 20% on the spring constant in the springs located at the supports of the bridge.