A New Stress Monitoring Method for Mechanical State of Buried Steel Pipelines under Geological Hazards

Table 2

Comparison results between FEM and theoretical analysis.

Section	Maximum axial stress (MPa)			Minimum axial stress (MPa)
	FEM	Material mechanics	Relative error	FEM	Material mechanics	Relative error
1	423.05	432.28	−2.13%	−232.48	−223.45	−4.04%
2	427.33	432.28	−1.14%	−228.31	−223.45	−2.17%
3	428.86	432.28	−0.79%	−227.02	−223.45	−1.60%
4	427.32	432.28	−1.15%	−228.31	−223.45	−2.17%
5	423.04	432.28	−2.14%	−232.49	−223.45	−4.04%