Cracking Characteristics and Mechanism of Internal Components of Large-Span Shield Tunnel

Figure 2

Crack types at the top of the middle partition wall in the large-span shield tunnel (top view): (a) type-Y; (b) type-Z; (c) type-I; (d) type-II; (e) type-III.

(a)

(b)

(c)

(d)

(e)