Dynamic Characteristic and Fatigue Accumulative Damage of a Cross Shield Tunnel Structure under Vibration Load

Table 2

Acceleration amplitude of tunnel analysis points.

Number of runs	Running time	A1	A2	A3	B
(Times)	(Years)	(m/s^2)	(m/s^2)	(m/s^2)	(m/s^2)
1	0	0.89	2.28	0.73	0.35
1.0 × 10^3	0.07	0.91	2.29	0.76	0.35
1.0 × 10^4	0.69	0.93	2.30	0.77	0.35
1.0 × 10^5	6.85	0.94	2.30	0.81	0.35
2.0 × 10^5	13.70	0.94	2.33	0.87	0.36
5.0 × 10^5	34.25	0.94	2.36	0.89	0.37
1.0 × 10^6	68.49	0.95	2.43	0.90	0.39
1.5 × 10^6	102.74	0.99	2.51	0.99	0.41