Life-Cycle Management Strategy on Steel Girders in Bridges

Table 1

Statistical parameters for 𝐴 and 𝐵 [5, 6].

Parameters	Carbon steel		Weathering steel
	A (𝜇m)	B	A (𝜇m)	B
(a) Rural environment
Mean value, 𝜇	34.0	0.65	33.3	0.498
Coefficient of variation, 𝜎/𝜇	0.09	0.10	0.34	0.09
Coefficient of correlation, 𝜌𝐴𝐵	—	—	−0.05	—
(b) Urban Environment
Mean value, 𝜇	80.2	0.593	50.7	0.567
Coefficient of variation, 𝜎/𝜇	0.42	0.4	0.30	0.37
Coefficient of correlation, 𝜌𝐴𝐵	0.68	—	0.19	—
(c) Marine Environment
Mean value, 𝜇	70.6	0.789	40.2	0.557
Coefficient of variation, 𝜎/𝜇	0.66	0.49	0.22	0.10
Coefficient of correlation, 𝜌𝐴𝐵	−0.31	—	−0.45	—