Table 3 Statistical characteristics of random variables.

Construction steps	Error factors	Main span		Side span		Distribution
Construction steps	Error factors	Mean	Standard deviation	Mean	Standard deviation	Distribution
Reference strand erection	L (m)	922.261	0.002	253.084	0.002	Normal
	Δh (m)	0	0.003	110.108	0.003	Normal
	Δf₁(m)	0	0.002	0	0.002	Normal
	t₁ (℃)	0	0.192	0	0.192	Normal
General strands erection	Δf (m)	0	0.0017	0	0.0017	Normal
General strands erection	Δt (℃)	0	0.495	0	0.495	Normal
Cable tightening	E (GPa)	201.635	0.298	201.635	0.298	Normal
Cable tightening	d (mm)	5.019	0.0014	5.019	0.0014	Normal

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