Shear or Moment connections ???
Shear or Moment connections ???
(OP)
Can anyone say that how i can choose a connection in design? Is there any specific way so that i can select a joint (shear or moment) in steel frame design?
Thanks in advance :)
Thanks in advance :)






RE: Shear or Moment connections ???
You tend to only use moment connections when framing action is required for stability or when you need the continuity to keep the deflection down.
Steelworks with complex fixed xonnections can cost more than double that for simple pinned construction.
These are really fundamental concepts that you should be discussing with your mentor.
RE: Shear or Moment connections ???
RE: Shear or Moment connections ???
RE: Shear or Moment connections ???
The structure doesn't care how you modeled it in your design. Ultimately the way the connections are detailed and constructed will create the response of the structure.
Almost all connections develop some rotational resistance. Our selection of "pinned" or "fixed" in our analyses becomes an approximation.
A rigid structure is more likely to perform as analyzed than a non-rigid structure. Pinned conditions are conservative in many respects, but can be misleading. Conversely, it is sometimes difficult to achieve true fixity due to deformation at the connection.
The others have given the basics of frame type selection....
Connectegr....what's your take?
RE: Shear or Moment connections ???
So my question is what are the respects and what are the basics which should i consider...
RE: Shear or Moment connections ???
Further, if you need lateral stability of a frame, you must either provide moment connections, knee braces, or a shear wall concept to resist lateral loads (as others noted above). It is sometimes a trade-off between the additional effort of a moment connection and the additional members required when pinned connections are used.
RE: Shear or Moment connections ???
1. When the beam rotates relative to the column, there is still a modest amount of moment placed on the column due to the stiffness and eccentricity of the shear connection.
2. A shear connection allows a limited amount of rotation. However, if that rotation amount is exceeded additional moment will be tyransferred to the column.
3. For fatigue design, a shear connection will not act as a perfect pin and fail under fewer cycles than a perfect pin (you can see this employed on older crane designs and bridge girders).
RE: Shear or Moment connections ???
you can use moment connection without brace bay.
this is a basic question. i like answering basic or student question but the old guys delete most of them. =)
RE: Shear or Moment connections ???
But remember though the famous saying that "All generalizations are not worth a da$% including this one." So take it with a grain of salt.
Mike McCann
MMC Engineering
RE: Shear or Moment connections ???
RE: Shear or Moment connections ???
RE: Shear or Moment connections ???
RE: Shear or Moment connections ???
Your post doesnt make much sense, can you please clarify.