Prediction of Transverse Reinforcement of RC Columns Using Machine Learning Techniques
Table 1
Statistics summary of input and output variables.
Variable
Feature comments
Mean
St.D.
Min.
25%
50%
75%
Max.
(m)
Section depth
0.35
0.15
0.08
0.25
0.31
0.41
1.52
Section depth-width ratio
1.07
0.27
0.50
1.00
1.00
1.00
2.01
Gross area to core area ratio
1.42
0.30
1.07
1.19
1.35
1.52
2.71
Shear span to effective depth ratio
3.93
1.94
1.15
2.50
3.49
5.00
12.50
(mm)
Longitudinal bar diameter
16.68
5.05
6.00
12.70
16.00
19.40
43.00
(MPa)
Yield strength of longitudinal bars
424
62
240
374
436
455
587
(%)
Longitudinal reinforcement ratio
2.42
0.99
0.46
1.82
2.22
2.68
6.94
(MPa)
Yield strength of transverse bars
451
186
200
352
414
476
1424
(MPa)
Concrete compressive strength at 28 days
43
24
13
28
34
41
118
Axial load ratio
0.20
0.17
0.00
0.09
0.16
0.30
0.90
(%)
Drift ratio at 0.8
3.82
2.42
0.43
1.98
3.22
5.27
15.63
(%)
Transverse reinforcement ratio
0.71
0.57
0.04
0.27
0.57
0.97
3.47
is the section width; is the cross-sectional core width measured with outside edges of transverse reinforcement; is the gross area of column; is the section area measured out-to-out with transverse reinforcement; is the effective depth in primary direction (dimension from compression face to centroid of outermost layer of tension steel); is the axial compressive force on column; is the total cross-sectional area of transverse reinforcement (including crossties) within spacing; and is the center-to-center spacing of spirals or circular hoops.
