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Evaluation of Prestress Loss Distribution during Pre-Tensioning and Post-Tensioning Using Long-Gauge Fiber Bragg Grating Sensors

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Academic year: 2020

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Figure

Figure 1.  The structural design of the packaged LFBG sensor [42].
Figure 3. Sketches of the restraining block for a) 7-strand tendon; b)3-strand tendon; and c) for separating adjacent strands
Figure 4. The installation procedure of the LFBG sensor. a) Place the strands through the marked pipe; b) strip the partial corrugated pipe; c) install the restraining blocks; d) attach the LFBG sensors; e) connect the sensor to the optical cable; and f) c
Figure 5. Three stages of pre-tensioning: a) applying prestress to tendons; b) casting and curing of concrete member; and c) cutting of tendon
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