Moment Connection Design or Rigid Connection design is made automatically according to the Design, Calculation, and Construction Principles of Steel Structures and AISC 360-16 (ASD and LRFD) regulations. Bolt, weld, plate, geometry, and strength controls are done automatically following the steel connection type.
The Moment Connection in ideCAD Structural is a joint that transfers bending moment forces between a steel column and steel beam (or any other two steel members). If a child member (a steel beam) has some internal moment, the connection should be able to transmit the load due to that moment.
While The Shear Connections in ideCAD Structural depend mostly on the web of a section, moment connections add to that by strengthening the connectivity of the flanges. This can be achieved by using plate stiffeners, welds, or other fixtures that strengthen and increase the rigidity of the connection between members.
Moment connection types are listed below.
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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 in between the beam splices, while for the column splices , it may or may not be left.
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Guideline for Moment Connections with TBDY 2018
Depending on the ductility level, the connections need to must provide a relative angle of translation of at least 0.04 or 0.02 radians according to the TBDY 2018 9B.1. These connections are End Plate and Flange Plate connections designed in ideCAD Structural Steel.
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