Analysis of Bridge Health Detection Based on Data Fusion

Table 4

Combination of risk factors.

Risk grade	Risk sample
Acceptable	Aa1, Aa2, Aa3, Ab1, Bb1, Ab2, Ac1, Ba1, Ba2, Ca1, Bb2
ALARP	Aa4, Ba4, Ba3, Ca3, Ca2, Da2, Da1, Db1, Ab4, Ab3, Ac3, Ac2, Ad2, Ad1, Bd1, Bb3, Cb2, Bc2, Cb1, Bc1, Cc1,
	Dd1, Dc1, Dc2, Db2, Db3, Da3, Da4, Ca4, Cb4, Bb4, Bc4, Ac4, Ad4, Cd1, Cd2, Bd2, Bd3, Ad3, Cc2, Cb3, Bc3
Unacceptable	Dd4, Dd3, Dd2, Dc3, Cd3, Dc4, Cd4, Db4, Bd4, Cc4, Cc3

Note. A-D, a-d, and 1–4 represent probability, harmfulness, and premonitory indicators 1–4.