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

Figure 3

Time history and spectrum curves of El-Centro wave and Kobe wave. (a) Time history curve of El-Centro wave. (b) Frequency curve of El-Centro wave. (c) Time history curve of Kobe wave. (d) Frequency curve of Kobe wave.

(a)

(b)

(c)

(d)