Combined Application of Optical Fibers and CRLD Bolts to Monitor Deformation of a Pit-in-Pit Foundation

<div>Assembly diagram of CRLD monitoring device. (a) Diagram of a miniature constant resistance and large deformation bolt. (b) Views of a miniature constant resistance device, large deformation bolt, and data collector.</div>

Advances in Civil Engineering

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Figure 5

Figure 5: Combined Application of Optical Fibers and CRLD Bolts to Monitor Deformation of a Pit-in-Pit Foundation 