Friction Characteristics of Post-Tensioned Tendons of Full-Scale Structures Based on Site Tests
Table 3
Full-scale field test measured values.
Beam (m)
Number of steel
Tension control stress (MPa)
Distance (m)
Sag ratio (rad)
Friction loss stress (MPa)
20
N1
1337.86
8.625
0.0927
87.32
1499.29
5.425
0.0927
79.29
N3
1499.29
9.800
0.0927
102.86
1499.29
5.425
0.0927
85.54
N4
1336.14
9.800
0.0349
65.14
25
N1
1356.07
9.654
0.0927
92.68
1315.71
6.453
0.0927
55.00
N3
1315.71
12.300
0.0927
130.14
1229.57
6.453
0.0927
60.57
N5
1232.71
12.300
0.0349
75.86
30
N1
1427.5
12.080
0.0927
77.62
1347.86
9.233
0.0927
58.57
N3
1347.86
14.80
0.0927
79.4
1273.93
9.233
0.0927
96.67
N5
1335.57
14.800
0.0349
98.67
30
N1
1285.43
12.080
0.0927
69.14
1404.52
9.233
0.0927
64.17
N3
1404.52
14.80
0.0927
82.86
1283.81
9.233
0.0927
92.14
N5
1311.00
14.800
0.0349
88.86
(1) Distance and sag ratio are known values, and tension control stress and friction loss stress are measured values. (2) Measured values are measured in the final stage of tension.
