Seismic Response Analysis of Secondary Lining Polymer Grouting Debonding Repair for Tunnel Construction Based on Parameter Inversion

Figure 21

Stress variation curves of the top of the secondary lining under different working conditions of the tunnel under the action of the Taft waves (Class II site): (a) the variation curve of the maximum principal stress at the top of the secondary lining; (b) a minimum principal stress variation curve at the top of the secondary lining.

(a)

(b)