Joints Calculation
The joint calculation in XFrame2d follows Eurocode EN 1993-1-8 using the component method.
Component Method
The component method analyzes a joint by:
- Identifying all active components (bolts, welds, plates, etc.)
- Calculating the stiffness of each component
- Assembling the overall joint stiffness
Calculated Properties
For each joint, the following are calculated:
- Moment resistance - Maximum moment the joint can transfer
- Rotational stiffness - Initial stiffness of the joint
- Classification - Rigid, semi-rigid, or nominally pinned
Integration with Analysis
The calculated joint stiffness is automatically used in the structural analysis. This provides:
- More realistic force distribution
- Better estimation of deflections
- Economical joint design
Output
The detailed joint calculation is included in the calculation report, showing all formulas and intermediate results according to the Eurocode.