Numerical Investigation of the Short-Term Mechanical Response of Buried Profiled Thermoplastic Pipes with Different Diameters to External Loads

Table 3

Mechanical parameters of each layer of the backfill in the numerical simulation.

Backfill layer	Dry density (kg/m^3)	Compaction degree (%)	Elastic modulus (MPa)	Internal friction angle (°)	Cohesion (kPa)	Poisson’s ratio
L01	1800	90	5	35	12	0.25
L02	1750	95	7	26	10	0.25
L03	1740	95	7	26	10	0.30
L04	1600	85	3	25	15	0.30
L05	1600	90	5	35	15	0.30
L06	1650	90	5	30	12	0.30
In-situ soil	1500	—	30	28	20	0.30