Field Test Study on Deformation Monitoring of Antifloating Anchor Using Optic Fiber Sensor

Figure 4

Original strain of the antifloating anchors. (a) Original strain of No. 1 anchor under loading conditions. (b) Original strain of No. 1 anchor under unloading condition. (c) Original strain of No. 2 anchor under loading conditions. (d) Original strain of No. 2 anchor under unloading condition.

(a)

(b)

(c)

(d)