Table 1: Parameters of steel beam and prestressed strand.

	Elastic Modulus	Yield Strength	Poisson Ratio	Thermal Expansion Coefficient
Beam	210 GPa	345 MPa	0.3	1.2×10-5 /ºC
Strand	190 GPa	1860 MPa	0.3	1.9×10-5 /ºC