Resilient Performance of Self-Centering Hybrid Rocking Columns: Theory, Experiment, and Numerical Simulation

Table 6

The test results of prestressing forces in each working case.

Case number	Prestressed initial resultant force (kN)	Prestressed strand diameter (mm)	Residual prestress (kN)	Maximum prestress (kN)	Percentage loss of prestress (%)
Specimen 1	357.8	4 × 15.2	209.8	496.8	41.4
Specimen 2	410.3	4 × 15.2	289.2	574	29.5
Specimen 3	365.8	4 × 12.7	264.1	467.8	27.8
Specimen 4	369.4	4 × 15.2	213.3	497.9	42.5
Specimen 5	367.2	4 × 15.2	237.2	490.3	35.4
Specimen 6	366.3	4 × 15.2	215.9	515.2	41.1