Monitoring System for Circular Deformation in Metro Shield Tunnels in Soft Soils

<div>Relationship between joint opening angle and moment under (a) PBM, group PBM-6, and (b) NBM, group NBM-6. Method 1 in the legend represents the sum of the rotation angles of the two adjacent segments. Method 2 represents the joint opening angle calculated by Equation (<a href="https://static.hindawi.com/articles/ace/volume-2020/8886402/figures/#EEq1">1</a>).</div>

Advances in Civil Engineering

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Figure 3

Figure 3: Monitoring System for Circular Deformation in Metro Shield Tunnels in Soft Soils 