Ultimate Seismic Resistance Capacity for Long Span Lattice Structures under Vertical Ground Motions

Table 2

Equivalent velocities of strain energy and _𝑠𝑊_𝑒/_𝑠𝑊_𝑝.

Model	Safety factor; 𝜈	𝑠𝑉LE (cm/sec)	𝑠𝑉𝑓 (cm/sec)	𝑠𝑉GY (cm/sec)		𝑠𝑊𝑒/𝑠𝑊𝑝
				𝛼=3.0	𝛼=6.0	𝛼=3.0	𝛼=6.0
Xa	2	99.15	236.98	174.27	244.24	0.21	0.15
	3	121.43	290.25	213.44	299.14
	4	140.26	335.21	246.51	345.52
Xb	2	95.99	291.38	201.89	297.00	0.30	0.12
	3	117.37	356.72	247.06	363.33
	4	135.46	411.81	285.05	419.34
Wa	2	103.30	103.30	118.69	143.94	0.06	0.04
	3	126.41	126.41	145.33	176.23
	4	146.04	146.04	167.79	203.49
Wb	2	100.01	310.82	212.54	312.88	0.29	0.12
	3	122.27	380.71	260.12	382.95
	4	141.10	439.55	300.28	442.03