The Effect Analysis of Strain Rate on Power Transmission Tower-Line System under Seismic Excitation

Table 4

Maximum base shear forces of 2nd transmission tower.

Seismic wave	Peak acceleration (m/s^2)	Shear force (kN)
		X direction		Y direction
		Without considering strain rate	Considering strain rate	Without considering strain rate	Considering strain rate
El Centro	6.0	138.465	136.894	163.459	157.404
	8.0	140.797	140.648	214.633	214.248
	10.0	151.760	154.172	262.068	268.623
	12.0	166.223	178.293	303.575	316.353
	14.0	203.141	212.887	319.025	323.093
	15.0	Collapse	222.141	Collapse	307.916
	16.0	Collapse	Collapse	Collapse	Collapse
Kobe	6.0	198.513	198.516	228.912	228.911
	8.0	228.882	228.878	260.429	260.427
	10.0	279.233	281.514	283.561	285.820
	12.0	248.166	252.340	263.036	267.653
	13.0	279.085	291.489	256.623	259.124
	14.0	Collapse	301.570	Collapse	267.427
	15.0	Collapse	Collapse	Collapse	Collapse
Northbridge	10.0	247.764	248.244	216.227	216.941
	15.0	289.418	289.030	309.638	309.181
	20.0	393.213	396.100	453.791	453.690
	23.0	456.353	458.828	469.431	474.372
	25.0	467.501	474.122	464.471	473.617
	27.0	465.700	481.191	500.019	520.178
	29.0	Collapse	485.623	Collapse	523.600
	30.0	Collapse	Collapse	Collapse	Collapse