Experimental Study on Load Bearing Characteristics of Steel Fiber Reinforced Concrete Lining in the Soft Surrounding Rock Tunnel

Figure 14

Change of contact pressure with a load. (a) Measuring point 1 (vault). (b) Measuring point 2 (haunch). (c) Measuring point 3 (middle of the side wall). (d) Measuring point 4 (middle of the inverted arch).

(a)

(b)

(c)

(d)