Study on Dynamic Strain Regularity and Influencing Factors of Shallow Buried Metal Pipe under Collapse Impact Load

Table 4

Range analysis table.

Condition	Mass of hammer, M (kg)	Height of collapse, H (m)	Pipe-soil stiffness ratio, R	Maximum strain (με)
1	16	6	1.602	−796.5
2	8	8	1.602	−713.1
3	32	4	1.602	−621.9
4	8	4	1.215	−496.1
5	16	8	1.215	−767.3
6	32	6	1.215	−1073.3
7	32	8	0.843	−1743.8
8	8	6	0.843	−1534.4
9	16	4	0.843	−1690.8
	−2743.60	−2808.80	−2336.70
	−3254.60	−3224.20	−2131.50
	−3439.00	−3404.20	−4969.00
	−914.53	−936.27	−778.90
	−1084.87	−1074.73	−710.50
	−1146.33	−1134.73	−1656.33