...
To suit the design under reversible forces such as earthquake forces, symmetrical and equal numbers of bolts are used on both flanges and webs. ideCAD does not allow asymmetrical connection during modeling.
It is assumed that the flanges carry the moment and the web carries the shear force, while the axial force is equally shared between both flanges.
The gap is left between the beam splices, while the column splices may or may not be left.
...
Guideline for Moment Connections with
...
AISC 360-16
Depending on the ductility level, the connections must provide a relative translation angle of translation of at least 0.04 or 0.02 radians according to the TBDY 2018 9B.1AISC 360-16. These connections are End Plate and Flange Plate connections designed in ideCAD Structural Steel.
...
If the design of the connections is preferred to be computed with TBDY 2018AISC 360-16, the YDKT method is mandatory under the earthquake regulations.
The required bending moment strength Muc and the required shear strength Vuc on the column face of the connections are calculated over the plastic hinges at the end of the beam. The formulas in the figure below are used.
...
The Vuc used in the dimensioning of the connection is determined according to the equation in the figure above by summing the shear force determined based on the yielding limit state with the shear force calculated from the combination of 1.2G + 0.5Q + 0.2S on the plastic hinge at the end of the beam.
Plastic hinge length is specified separately for each connection in TBDY 2018AISC 360-16, and automatic computation is made under these rules. Details will be given in each connection.
The shear strength required for the panel zone is calculated using the column shear force generated by the possible plastic moments of the beams connecting to the column.
...