Shaking Table Tests for Seismic Response of Orthogonal Overlapped Tunnel under Horizontal Seismic Loading

Table 7

Peak acceleration and frequency of the crown at the central cross section of the under-crossing tunnel.

Transformation scale	Peak acceleration (m/s^2)		Corresponding time (s)	Main frequency band (Hz)	Dominant frequency (Hz)
Original signal	0.49	—	43.90	2–46	14	—
1	0.05	0.10	36.88	3–50	41	2.93
2	0.09	0.18	40.84	52–93	73	5.21
5	0.31	0.63	45.31	12–48	31	2.21
10	0.63	1.29	46.57	8–25	13	0.93
20	0.53	1.08	44.62	6–12	8	0.57
50	0.94	1.92	43.22	2–5	3	0.21