Unsupervised Performance Evaluation Strategy for Bridge Superstructure Based on Fuzzy Clustering and Field Data

Table 6

Category center for durability evaluation.

Category	𝐶𝑑	𝑃𝑡	𝑆𝑑	𝐶𝑙	𝐾𝑏𝑚	𝑅𝑐	𝐿𝑅	𝑇𝑅	𝐶𝑤
Very good	0.2	0.99	0.99	0.05	1.09	−34	2.33	0	0.03
Good	0.73	0.87	0.96	0.28	0.98	−200	6	2.33	0.14
Ordinary	1.25	0.80	0.97	0.57	0.94	−281	14.5	6	0.34
Poor	1.95	0.59	0.96	0.9	0.87	−363	19	10.5	0.49