Dynamic Response Characteristic of Building Structure under Blasting Vibration of underneath Tunnel

Table 2

The instantaneous frequency of the IMF component at three critical moments.

IMF	Main frequency of IMF (Hz)	Instantaneous frequency (Hz)			Instantaneous amplitudes
		T1	T2	T3	T1	T2	T3
2	849	700	1007	2891	0.001	0.0018	0.0011
3	131	122.77	348	906.6	0.0829	0.0009	0.0009
4	58	137.32	76.76	92	0.0227	0.1382	0.1064
5	20	16.55	22.50	23.75	0.5463	0.6408	0.5639
6	16	17.447	20.55	22.43	0.0211	0.0393	0.0489
7	15	16.77	20.5	23.82	0.0071	0.0045	0.0038
8	7	6.09	5.74	5.52	0.0369	0.0436	0.0464
9	16	2.24	1.81	0.75	0.0019	0.00213	0.0021
10	7	2.79	3.32	3.64	0.0982	0.0108	0.0113
11	4	3.32	3.34	3.41	0.0052	0.0051	0.0051
12	3	2.33	2.29	2.32	0.0059	0.0059	0.0059