Response Surface Method for Material Uncertainty Quantification of Infrastructures

Table 1

Material properties for the finite element model.

Quantity	Symbol	Unit	DOE				UQ
			Mean (0)	Variation	Lower (-1)	Upper (+1)	Model	COV	Truncation
Concrete modulus of elasticity		MPa	40,000	15%	34,000	46,000	Normal	0.08
Concrete Poisson’s ratio		-	0.2	-	-	-	-	-	-
Concrete mass density		kg/	2,400	10%	2,160	2,640	Normal	0.06
Concrete compressive strength		MPa	35.0	20%	28.0	42.0	Normal	0.10
Concrete tensile strength		MPa	3.5	20%	2.8	4.2	Normal	0.10
Foundation modulus of elasticity		MPa	20,000	25%	15,000	25,000	Normal	0.10
Foundation Poisson’s ratio		-	0.25	-	-	-	-	-	-
Foundation mass density		kg/	2,500	-	-	-	-	-	-
Water mass density		kg/	1,000	-	-	-	-	-	-
Wave velocity in water		m/s	1,440	-	-	-	-	-	-
Wave reflection coefficient at the bottom		-	0.80	-	-	-	-	-	-
Sediment/silt mass density		kg/	1,360	-	-	-	-	-	-

DOE: Design of Experiment; UQ: Uncertainty Quantification; COV: Coefficient of Variation.