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

Table 1

Calculated stress results of FEM in five pipe sections.

Section	Maximum/minimum axial stress (MPa)		Hoop stress (MPa)	Equivalent stress (MPa)		Maximum shear stress (MPa)	90% of yield strength (MPa)
	1	423.05		−232.48	252.37			−170.68	484.85	484.85	499.50
2	427.33	−228.31	252.37	−174.96	480.68	480.68	499.50
3	428.86	−227.02	252.37	−176.49	479.39	479.39	499.50
4	427.32	−228.31	252.37	−174.95	480.68	480.68	499.50
5	423.04	−232.49	252.37	−170.67	484.86	484.86	499.50