Optimal Seismic Intensity Measure Selection for Isolated Bridges under Pulse-Like Ground Motions

Table 5

Demand models and practicality comparison of IMs subjected to far-field ground motions.

Height (m)	μx							δx
	PGA	PGV	PGD	CAD	Ia	Iv	CAV	PGA	PGV	PGD	CAD	Ia	Iv	CAV
4	0.35	0.37	0.25	0.34	0.23	0.19	0.45	0.79	0.82	0.50	0.71	0.47	0.41	0.91
6	0.41	0.42	0.20	0.36	0.27	0.21	0.54	0.70	0.77	0.40	0.62	0.46	0.37	0.90
8	0.45	0.52	0.26	0.45	0.30	0.26	0.63	0.73	0.82	0.42	0.66	0.48	0.39	0.94
10	0.43	0.53	0.30	0.49	0.30	0.27	0.64	0.70	0.81	0.44	0.67	0.47	0.40	0.94
12	0.54	0.64	0.37	0.58	0.37	0.33	0.79	0.76	0.83	0.46	0.72	0.50	0.42	1.00
14	0.66	0.79	0.47	0.70	0.44	0.40	0.92	0.76	0.86	0.51	0.76	0.50	0.44	1.03
16	0.68	0.85	0.55	0.79	0.47	0.44	0.99	0.75	0.90	0.56	0.79	0.51	0.46	1.03
18	0.70	0.91	0.64	0.90	0.48	0.50	1.05	0.75	0.86	0.55	0.79	0.50	0.44	1.05
20	0.75	1.02	0.71	1.02	0.53	0.56	1.17	0.67	0.74	0.48	0.68	0.44	0.38	0.93

Note: bold values indicate more practical IM.