Research Article

Structural Damage of Subway Tunnel Buried Shallowly in Silt Layer under Soil Mound Loading

Figure 11

Development law of typical crack in segment vault with the mound height. (a) Development process of typical crack. H represents the height of soil mound. (b) Development of depth and width of typical crack. Note: according to Code for Design of Metro (GB 50157-2013) [15], the allowable crack width is 0.2 mm when the calculated method is used.
(a)
(b)