Structural Damage Identification Method of Girder Bridges Based on Multilevel Data Fusion Theory

Table 4

Damage quantitative analysis comparation for DD₃, DR₂, CR₂, and RD₂.

Index		Case
				C4				C8					C14
				Ideal output	Actual output	AE	RPE (%)		Ideal output	Actual output	AE	RPE (%)	Ideal output	Actual output	AE	RPE (%)
DD3	1	0.80	0.8261	0.0261	3.2675	0.9		0.9244	0.0244	2.7069	0.85	0.8408	0.0092	1.0802
	2		0.7784	0.0216	2.6982					0.8773		0.0227	2.5198	0.8759	0.0259	3.0455
	3		0.8088	0.0088	1.0938					0.8854		0.0146	1.6196	0.8609	0.0109	1.2850
DR2	1		0.8193	0.0193	2.4159					0.8339		0.0661	7.3416	0.9012	0.0512	6.0281
	2		0.7832	0.0168	2.0958					0.8472		0.0528	5.8626	0.8991	0.0491	5.7790
	3		0.7712	0.0288	3.6003					0.8218		0.0782	8.6915	0.9248	0.0748	8.7986
CR2	1		0.7546	0.0454	5.6768					0.9303		0.0303	3.3684	0.8955	0.0455	5.3553
	2		0.7673	0.0327	4.0931					0.8412		0.0588	6.5298	0.8710	0.0210	2.4650
	3		0.7535	0.0465	5.8139					0.8776		0.0224	2.4943	0.8637	0.0137	1.6137
DR2	1		0.8318	0.0318	3.9755					0.9331		0.0331	3.6825	0.9099	0.0599	7.0497
	2		0.8142	0.0142	1.7759					0.8671		0.0329	3.6596	0.9064	0.0564	6.6304
	3		0.8310	0.0310	3.8793					0.8515		0.0485	5.3930	0.9036	0.0536	6.3116