4.4.15.5. Connection crossing

Crossing Connection

In this category, the center of gravity axes of the beam and column cross each other with a certain spatial distance. This allows for precise modeling of connections where components run over one another or are offset from each other.

Prerequisites

Before you begin creating the crossing connection, ensure that the following points are met:

Software: AutoCAD Plant 3D and Autodesk Advance Steel are installed.
SuCri Plugin: The current version of the SuCri plugin is properly licensed and ready for use.
Model: A primary and a secondary beam (beam/column) are present in the model and their axes cross in space.
Project Settings: The required profile catalogs and material definitions in Advance Steel are loaded.

Step-by-Step Instructions

Step 1: Start the SuCri Plugin and Select the Connection Module

Open your model in AutoCAD Plant 3D or Advance Steel.
Navigate to the SuCri tab in the menu bar.
Click on the Connections module to open the selection of connection types.

Expected Result: A dialog box with various connection options appears.

Step 2: Selection of the "Crossing" Connection Type

Locate the Crossing option in the graphical display or list.
Select it and confirm the selection with OK if necessary.

Expected Result: The software prompts you to select the corresponding components in the model.

Step 3: Definition of the Primary Beam

Click on the Primary Beam in the model area. This is usually the continuous main component, which is typically located "below".

Expected Result: The beam is highlighted in color and the selection is confirmed in the command line.

Step 4: Definition of the Secondary Beam

Now select the Secondary Beam that crosses the primary beam.

Expected Result: This beam is also visually highlighted.

Step 5: Confirmation and Generation of the Connection

Press the Enter key to complete the selection.
Wait a moment while SuCri analyzes the geometry.

Expected Result: A preliminary crossing connection with standard components (plates, bolts) is created and the Joint Properties window opens automatically.

Step 6: Adjustment via the Properties Window (Joint Properties)

Use the various tabs to refine the connection:

Plates: Adjust the thickness, material, and size of the mounting plates.
Bolts: Configure the type, diameter, as well as the number of rows and columns including edge distances.
Positioning/Offset: Since the axes cross in space, adjust the vertical or horizontal offset of the secondary beam relative to the primary beam here.

Expected Result: The connection in the model is dynamically updated and reflects your changes immediately.

Step 7: Review and Finalization

Visually check the connection for collisions by rotating and zooming in the model.
Ensure that all structural requirements (number of bolts, weld seams) are met.
Close the properties window and Save your model.

Expected Result: The crossing connection is fully modeled and ready for drawing derivation.

Important Notes

Axis Distance: Pay close attention to the spatial distance of the center of gravity axes; this is crucial for the correct placement of the fasteners.
Dynamics: Use the dynamic preview – every parameter change in the properties window should be checked immediately in the model.
Shortcuts: Use Enter to confirm, ESC to cancel, and F3 for object snapping.

Troubleshooting

Connection is not generated: Check if the beam profiles are compatible or if they overlap unintentionally. Restarting the function or adjusting the offsets step-by-step often solves the problem.
Collisions with bolts: Open the Joint Properties and reduce the plate thickness or adjust the center distances of the bolts in the Bolts tab.
Incorrect Geometry: Ensure that the primary beam was actually clicked first and then the secondary beam during selection. If in doubt, delete the connection and recreate it.