Vertical Load and Settlement at the Foot of Steel Rib with the Support of Feet-Lock Pipe in Soft Ground Tunnel

Table 4

Comparison of the predicted foot settlements.

Soil grade	Tunnel section	Average foot settlement (mm)	Proposed approach (Pasternak model) (mm)	Previous approach (Winkler model) (mm)
VI	XK89 + 588	18.0	18.9	19.2
	XK89 + 605
V	SK89 + 355.6	13.9	14.4	14.8
	SK89 + 397.6