Table 2 Material parameters.
From: Study on the influence law of cavities behind the shotcrete lining on the lattice girders
` | Elastic modulus/GPa | Poisson's ratio | Heavy units /kN/m3 | Compressive yield strength/MPa |
|---|---|---|---|---|
Concrete | 20 | 0.2 | 24.0 | 10 |
Surrounding rock | 5 | 0.3 | 24.0 | – |
Rebar | 200 | 0.25 | 78.5 | 400 |
