Table 2 Stratigraphic model parameters.

From: Vibration response of piles at different distances induced by shield tunneling in hard rock strata

stratum type

Density (kN/m3)

Emod (Pa)

pb-ten (Pa)

pb-coh (Pa)

krat

fric

Moderately weathered limestone

25

1e5

1e5

1e7

1.5

0.57