Table 3 Table of model material parameters.

From: Analysis of shield tunnel response to bilateral pit excavation with a focus on perimeter pressure and deformation mechanisms

Materials

Model type

Modulus of elasticity/GPa

Poisson’s ratio

Capacity /(kN/m3)

C50 concrete

Van Mersers

34.5

0.2

25

Grade 8.8 bolts

Van Mersers

200

0.3

78.5

Q345 hot rolled channel 16b

Resilient

206

0.28

78.5

Interface between concrete

Interface and Pile-Interface

–

–

–

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