Correlation Effects of Near-Field Seismic Components in Circular Metro Tunnels: A Case Study—Tehran Metro Tunnels

Table 7

Default parameters of concrete damage plasticity model [25].

Parameter name	Value
Dilatation angle ()	20
Eccentricity ()	0.1
fbo/fco	1.16
K	0.667
Viscosity parameter ()	0.01

fbo/fco is the ratio between the initial biaxial compressive yield stress and the initial uniaxial compressive yield stress, K describes the ratio of the distance between the hydrostatic axis and the compression meridian and the tension meridian in the deviatoric cross-section, respectively.