Service and Ultimate level force analysis of concrete cross sections
ToDo:
- Repository Licensing - ** 3-Clause BSD **
- Programming Languages to Support - ** Python and VBA **
- National Building Codes to Support
- ACI 318
- EN 1992-1-1 December 2004
- CSA
Concrete Compression Stress Block Formulations for Sections defined by straight lines:
- Whitney Block
- verified - Area * 0.85 * F'c
- PCA Parabolic+Linear Stress Block
- verified - see backup material verified against 3 point Gauss Integration
- Eurocode 2 Parabolic + Linear Stress Block (eq 3.17) - Parametric Formula derived needs verification
- Eurocode 2 Bi-Linear - Section 3.1.7 (2)
- User Defined Piecewise Linear
Concrete Compression Stress Block Formulations for Circular Sections:
- Whitney Block
- verified - Segment area * 0.85 * F'c
- PCA Parabolic + Linear Stress Block
- verified - verification via 100 discrete trapezoid slices through parabolic region
- Eurocode 2 Parabolic + Linear Stress Block (eq 3.17) - Researching, When n=2 similar to PCA when n<2 numeric integration may be the best option
- Eurocde 2 Bi-Linear - Section 3.1.7 (2)
- User Defined Piecewise Linear
Steel Stress-Strain Relationship:
- Elastic Constant - Stress = Fy beyond yield point
- Elastic + Linear Plastic - Stress in plastic region increases linearly
- User Defined Piecewise linear
Checks not done by anyone that probably should be done:
- strain in steel < rupture strain