Verification of circular RC cross-section
The program verifies a reinforced concrete pile using the method of limit deformation. The maximum allowable strain of concrete in compression is 0,002 - 0,0035.
The degree of reinforcement is checked using the formula:
- Column - check for dominant compression
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ρmax = 0,04 | ||
ρmin = 0,0013 | - for fy = 460 N/mm2 | |
ρmin = 0,0024 | - for fy = 250 N/mm2 | |
- Beam - check for dominant bending
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ρmax = 0,06 | ||
ρmin = 0,004 | ||
where: | Dp | - | pile diameter |
As | - | reinforcement area |
Interaction diagram N-M
Usage ratio of concrete cross-section subject to the combination of bending moment and normal force is determined as |0L| / |0R|. Where L is load and R is strength with prescribed excentricity.