Deformation Forecast of Main Girder Enhanced by Stay Cable System with Unequal Interval Grey Model and Residual Composite Correction

Table 2

The fitting values by UIGM.

Tensioning force/kN	Measured values/mm	Fitting values/mm	Residual/mm	Relative error/%
630	25.30	25.3000	0.0000	0.0000
1,050	31.33	32.4076	-1.0776	-3.4395
1,155	33.27	34.4138	-1.1438	-3.4379
1,365	37.15	35.6871	1.4629	3.9378
1,575	42.78	37.4548	5.3252	12.4479
1,785	45.18	39.3101	5.8699	12.9923