Seismic Response Study of Tunnels Running underneath a Subway Station in Parallel

Table 2

Calculation conditions.

Set	Model type	Parameters (m)		Input motion
SS1	Soil-station	Buried depth is 3		El-Centro wave and its amplitude are adjusted to 0.1 g.
ST2; ST3; ST4; ST5; ST6; ST7; ST8; ST9	Soil-tunnel	Buried depth is 17.5	S = 3; S = 6; S = 12; S = 18
		Buried depth is 26	S = 3; S = 6; S = 12; S = 18
STS10 STS11	Soil-tunnel-station	S = 3	H = 0.5; H = 9
STS12 STS13		S = 6	H = 0.5; H = 9
STS14 STS15		S = 12	H = 0.5; H = 9
STS16 STS17		S = 18	H = 0.5; H = 9
FF18	Free-field
FF19	Free-field			Kobe wave (0.1 g)
SS20	Soil-station	Buried depth is 3