Ground Vibration Isolation of Multiple Scattering by Using Rows of Tubular Piles as Barriers

Figure 10

Normalized displacement amplitudes curves along midline behind the isolation system under different numbers of tubular piles (𝑏_𝑠=0.9𝑎_𝑠, 𝑠_𝑝=3.0𝑎_𝑠,   𝑚=4,   𝑁=8).

(a) ℎ=0,𝐺_𝑟=10

(b) ℎ=3𝑎_𝑠,𝐺_𝑟=1000