A Comparative Study of Protective Schemes for Shield Tunneling Adjacent to Pile Groups

Figure 12

Calculated settlement of bridge: (a) deep-hole grouting; (b) pile foundation underpinning; (c) without protection. The values (in red characters) represent the percentage of displacement. For an example, the red area in Figure 12(c) (displacement between −3.77 mm and −4.12 mm) accounts for 0.4% of the total displacement of the bridge.

(a)

(b)

(c)