A gusset joint connects bracing members using gusset plates. The number of bracing members that can be enabled can vary from one to three.
You can customize each joint element using the available buttons from the Joint elements panel. All changes made in every window can be viewed in real time. For example, you can define the geometry of the gusset plate, end plate, stiffeners, set the configuration of bolts and customize the welds (thickness, type and quality) for each part of the joint
Each parameter is illustrated by a corresponding image in the dialog box.
Another simple way to change the joint elements geometry is by modifying directly the dimension line values available in the views. This way, the joint geometry will be much easier to define by double-clicking on the editable dimension line values (without parentheses).
The dimension lines that contain values between parenthesis cannot be modified and correspond to the grayed-out values that appear in the element dialog. For example, the user can change the bolts positioning directly in the views for values that are not grayed-out in the bolts dialog.
A welded connection can also be obtained by simply disabling the bolts.
The “Reference axis” and “Rotation” parameters are used to set the direction for main beam and diagonals.
When defining the geometry of the Gusset connection, there are available different profile shapes for main beam section (I sections, C sections, hollow sections).
For diagonals member, a drop-down list is available for selecting the desired profile section (i.e: C section, angles, I and T sections).
After defining the joint elements, the users have the possibility to choose the material for each element according to different standards and set the following steel design assumptions: steel corrosion, control of the shear plane for bolts (threaded/ unthreaded), weld design method and give values for the safety factors that will influence the calculation results.
Users have the possibility to define load cases, load combinations and add values for the loads (N - axial force)
It is possible to set manually the combination coefficient or automatically generate combinations according to the Eurocode 0.
The users can add different load cases from the available list. Also, the envelope load case doesn’t require any combination, because it is interpreted as a special load case that has the meaning of a combination which consists only of the maximum value of the efforts. For example, the user can define an envelope case that can provide the maximum axial force, maximum shear force or maximum bending moment.
For the calculation of connections, BD Steel Connection uses Eurocode 3 international design standards, for all the connection components verification: bolts, welds, plates, etc. and parts of the connected elements, beams web and flanges.
The module can generate a report which contains a range of chapters that describe the calculation theoretical formula, the calculation results and work ratio for each verification.
From a list, the chapters to be included in the report can be chosen. Here is an example of the main verification chapters that appear in the generated report.
For each verification, the Calculation results tab displays: the work ratio, resistance, effort and combination. Above is an example of calculation results for a splice model.
Errors and warnings may appear in the console during this stage, whenever there are failed verifications, hole distances conditions that are not satisfied, or other joint design problems.
The Generate command available in the ribbon creates the report in .doc or .pdf file. With the Preview command, users can generate a report by selecting one of the available templates, or creating a new report using the Report Designer.
If the calculation shows that some connection components (plates, bolts, beam, column, weld) have failed verifications (a work ratio >100%), then such elements are colored in red on all views.
This helps identify easily all elements that should be reviewed without checking the report and makes the connection design process much easier.
The user can obtain a generic connection drawing (elevation and sections), which can further be exported and adjusted in other CAD software.
The Drawing Settings dialog is used for customizing the drawing. Here, the user can set the page layout and the title blocks, disable different views (sections/elevation) in the drawing, change the section symbols and the scale for each view. The print margins can be set when printing the generated drawing.