Research Article
Seismic Behavior of Steel Off-Diagonal Bracing System (ODBS) Utilized in Reinforced Concrete Frame
Table 5
Sections characteristics and properties of the fifteen-story concrete frame with X- and off-diagonal bracing systems for nonlinear analysis.
| Components | Floor | Type | Dimensions () | Bars and stirrups | Hinges | Effective inertia |
|
Beams | First, second, and third floors | | Rectangular (cm) | 7 Ø 20 Ø16 @ 12, 25 cm (top and bottom) | Flexural (M3) | 0.01 rad plastic rotation | Fourth, fifth, sixth, and seventh floors | | Rectangular (cm) | 8 Ø 22 Ø12 @ 10, 20 cm (top and bottom) | Flexural (M3) | 0.01 rad plastic rotation | Eighth, ninth, tenth, and eleventh floors | | Rectangular (cm) | 7 Ø 18 Ø12 @ 10, 20 cm (top and bottom) | Flexural (M3) | 0.01 rad plastic rotation | Floors from twelve to fifteen | | Rectangular (cm) | 6 Ø 18 Ø10 @ 10, 20 cm (top and bottom) | Flexural (M3) | 0.01 rad plastic rotation |
|
Columns | First floor and second floor | | Rectangular (cm) | 44 Ø 25 Ø16 @ 10, 20 cm | Flexural + axial (P-M3) | 0.012 rad plastic rotation | Floors from three to six | | Rectangular (cm) | 36 Ø 25 Ø14 @ 10, 20 cm | Flexural + axial (P-M3) | 0.012 rad plastic rotation | Floors from seven to eleven | | Rectangular (cm) | 28 Ø 22 Ø12 @ 10, 20 cm | Flexural +axial (P-M3) | 0.012 rad plastic rotation | Floors from twelve to fifteen | | Rectangular (cm) | 20 Ø 22 Ø10 @ 10, 20 cm | Flexural + axial (P-M3) | 0.012 rad plastic rotation |
|
Braces | Floors from one to four |
X | Box (cm) | — | Axial (P) | 7 plastic deformation | Floors from five to nine | Box (cm) | — | Axial (P) | 7 Plastic deformation | Floors from ten to fifteen | Box (cm) | — | Axial (P) | 7 plastic deformation | First floor | ODBS | Components 1 and 2: Box | — | Axial (P) | 9 plastic deformation |
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