Nonlinear Seismic Behavior of Different Boundary Conditions of Transmission Line Systems under Earthquake Loading

Table 4

Comparison of the fundamental frequencies of the tension type model.

Frequency	Transmission line
	Model 3 (Hz)	Model 4 (Hz)	Difference/%
Longitudinal	0.2835	0.2624	7.44
Transverse	0.1492	0.1594	−6.84
Frequency	Transmission tower
	Model 3 (Hz)	Model 4 (Hz)	Difference/%
Longitudinal	1.4438	1.7098	−18.42
Transverse	1.6707	1.6748	−0.25