Rotational Behavior of Column Footing Joint and Its Effect on the Dynamic Characteristics of Traditional Chinese Timber Structure

Table 3

Effect of rotational stiffness of CFJ on structural natural frequency.

K (N.m/rad)	Frequency (Hz)
	The 1st order	The 2nd order	The 3rd order
0	0.5234	0.5250	1.6854
10^1	0.5234	0.5250	1.6854
10^2	0.5238	0.5254	1.6856
10^3	0.5281	0.5296	1.6871
10^4	0.5684	0.5699	1.7029
10^5	0.8652	0.8662	1.8476
10^6	1.9486	1.9491	2.6673
10^7	3.1777	3.1781	3.8561
10^8	3.4968	3.4971	4.1858
10^9	3.5344	3.5347	4.2251
10^10	3.5382	3.5386	4.2291
10^11	3.5386	3.539	4.2295
10^12	3.5386	3.539	4.2296
∞	3.5386	3.539	4.2296