Study on Stress-Strain Characteristics of Pipeline-Soil Interaction under Ground Collapse Condition

Table 4

Relative error of maximum von Mises equivalent stress.

Cave collapse radius (m)	Maximum von Mises equivalent stress (MPa)		Relative error
	Original numerical solution	Numerical solution of literature
10	17.28	18.5	6.61%
15	55.67	58.4	4.67%
20	101.728	110.0	7.52%