Construction Sequence Optimization and Settlement Control Countermeasures of Metro Tunnels Underpassing Expressway

Table 7

The vault settlement value of the tunnel and haunch horizontal convergence value under different construction schemes (unit: mm).

Feature points	P1	P2	P3	S1	S2	S3
Before reinforcement	−6.81	−6.28	−42.13	−4.56	−4.14	−12.24
After reinforcement	−1.50	−1.51	−20.17	−1.21	−1.04	−13.08