Study on the Seismic Effect of the Interbedded Soil Layer in the Yinchuan Alluvial Plain

Table 4

Ground motion amplification ratios for the six multiple interbedded models under four seismic inputs.

	Bedrock input	Model 2-1	Model 2-2	Model 2-3	Model 2-4	Model 2-5	Model 2-6
PGA (gal)	1 (60)	1.37 (82.40)	1.34 (80.1)	1.31 (78.6)	1.32 (79.2)	1.33 (79.8)	1.39 (83.2)
	1 (202)	1.29 (261.3)	1.26 (254.6)	1.25 (252.2)	1.24 (250.5)	1.23 (249.0)	1.25 (252.0)
	1 (395)	1.66 (654.0)	1.45 (573.5)	1.35 (534.2)	1.27 (501.7)	1.18 (467.6)	1.08 (427.4)
	1 (680)	1.42 (963.8)	1.17 (798.3)	1.01 (689.2)	0.9 (612.0)	0.77 (525.2)	0.72 (489.0)
PGV (cm/s)	1 (4)	1.10 (4.40)	1.05 (4.20)	1.10 (4.40)	1.15 (4.6)	1.05 (4.2)	1.05 (4.2)
	1 (19)	1.04 (19.7)	1.01 (19.2)	1.02 (19.4)	1.05 (20.0)	1.06 (20.2)	1.07 (20.3)
	1 (35)	1.55 (54.1)	1.58 (55.4)	1.61 (56.4)	1.49 (52.1)	1.42 (49.6)	1.40 (49.0)
	1 (65)	1.98 (128.7)	1.9 (123.4)	1.96 (127.4)	1.83 (119.2)	1.64 (106.3)	1.75 (113.8)
PGD (cm)	1 (2)	1.00 (2.0)	1.00 (2)	1.00 (2)	1.00 (2.0)	1.00 (2.0)	1.00 (2.0)
	1 (5)	1.22 (6.1)	1.24 (6.2)	1.28 (6.4)	1.4 (7.0)	1.42 (7.10)	1.46 (7.30)
	1 (14)	1.24 (17.3)	1.27 (17.8)	1.32 (18.5)	1.34 (18.3)	1.38 (19.3)	1.41 (19.8)
	1 (24)	1.48 (35.6)	1.58 (36.0)	1.63 (39.2)	1.69 (37.1)	1.71 (41.0)	1.78 (42.8)