Simulation-Based Tracking Test and Optimization of Large-Tonnage Box Girder Transport with Trolley on an Erected Bridge

Table 1

Material parameters.

C50 concrete; Elastic modulus (× 10^4 MPa)				Density (kg/m^3)	Prestressed tendons
					Density (kg/m^3)	Elastic modulus (10^4 MPa)
48 h	82 h	320 h	1080 h	2650	19.5	7850
2.34	3.15	3.52	3.64