Mechanical Response and Parametric Sensitivity Analyses of a Drainage Pipe under Multiphysical Coupling Conditions

Table 6

Simulation scenarios and range of physical variables.

(i)
Physical fields no.	Physical field		Value
Single physical field	Traffic load	+gravity	0.7 MPa
	Pipe fluid		0.25 D
	Groundwater		0.5 m above the crown
Multiphysical fields	Gravity, traffic load, groundwater, and pipe fluid		Ibid
(ii)
Variable	Range	Variable	Range
Wheel pressure P	0.6–1.5 MPa (ΔP = 0.1)	Gasket strength Eg	2.0–12.0 MPa (ΔEg = 1.0)
Vehicle speed	20–90 km/h ()	Soil cover depth H	1.0–3.0 m (ΔH = 0.25)
Bedding strength Eb	100–500 MPa (ΔEb = 50)	Groundwater level hw	−1.0–1.0 (Δhw = 0.25)
Backfill strength Ec	20.0–100 MPa (ΔEc = 10)	Fluid height h	0.125–1.0 D (Δh = 0.125)

Note. A groundwater level of −1.0 m indicates that the groundwater level is 1.0 m below the springline and 1.0 m indicates that the groundwater level is 1.0 m above the springline.