Study on Joint Damage of Double Prefabricated Fragments Penetrating Finite Thickness Concrete

Table 10

Orthogonal optimization of joint damage location and joint degree of each group.

Number	Joint damage location	Falling point spacing	Distance from the flying-out point to the intersection line (fragment 1)	Distance from the flying-out point to the intersection line (fragment 2)	Degree of association (overall)	Degree of association (remove pit opening)
1	Front pit + tunnel	20	5.36	20.7	2	1
2	Front pit + tunnel + penetration	20	−34.65	−56.9	3	2
3	Front pit	20	−118.56	6.86	1	0
4	Front pit	20	13.2	−98.56	1	0
5	Front pit	20	−5.36	31.1	1	0
6	Front pit	30	−130.52	−48.94	1	0
7	Front pit + tunnel	30	−4.12	13.2	2	1
8	Front pit	30	−50	−96.13	1	0
9	Front pit + tunnel + penetration	30	51.96	13.8	3	2
10	Front pit	30	65.8	115.9	1	0
11	Front pit + tunnel	40	−69.28	19.96	2	1
12	Front pit	40	23.1	−92.36	1	0
13	Front pit + tunnel + penetration	40	−6.2	10.37	3	2
14	No	40	−69.26	80	0	0
15	Front pit + tunnel	40	127.86	74.5	2	1
16	No	50	−32.8	−86.8	0	0
17	No	50	−109.69	11.5	0	0
18	Penetration	50	28.56	70.7	1	1
19	Front pit + tunnel + penetration	50	6.6	20	3	2
20	Penetration	50	186.6	171.76	1	1
21	No	60	−5.34	15.9	0	0
22	No	60	−45.36	69.3	0	0
23	No	60	60	4.85	0	0
24	No	60	57.7	98.56	0	0
25	Front pit	60	85.34	93.24	1	0