Beam-Column Joint Shear Failure
Beam-Column Joint Shear Failure
(OP)
Hi,
let's say you have to design a RC building in a highly seismic zone and your structure has highly ductile moment frames, aka Special Moment Frames. You have to design the beam-column connections of this structure, obviously. Let's say one of these connections has three beams of those special moment frames and one cantilever beam framing into this connection.
My question is: Would u neglect the cantilever beam while u design this connection? e.g. neglecting any kind of force transferred into the connection from this cantilever beam due to gravity and/or vertical component of the earthquake force etc.
U can refer to every code and/or explain technically why u would/not neglect the cantilever beam in such a connection. Thanks in advance.
let's say you have to design a RC building in a highly seismic zone and your structure has highly ductile moment frames, aka Special Moment Frames. You have to design the beam-column connections of this structure, obviously. Let's say one of these connections has three beams of those special moment frames and one cantilever beam framing into this connection.
My question is: Would u neglect the cantilever beam while u design this connection? e.g. neglecting any kind of force transferred into the connection from this cantilever beam due to gravity and/or vertical component of the earthquake force etc.
U can refer to every code and/or explain technically why u would/not neglect the cantilever beam in such a connection. Thanks in advance.
RE: Beam-Column Joint Shear Failure
Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."
RE: Beam-Column Joint Shear Failure
1) It is not part of the Special Moment Frame or lateral load-resisting system
2) We will overdesign the joint if we take into account the ultimate moment capacity of the cantilever beams since the cantilever beam shouldn't go into the inelastic region. Because we don't design the cantilever beam to behave ductile.
RE: Beam-Column Joint Shear Failure
2) True, it is not part of the resisting mechanism, but it is part of the mass supported by that structure, hence the potential loads that it will introduce.
Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."
RE: Beam-Column Joint Shear Failure
RE: Beam-Column Joint Shear Failure
Maybe others could comment if you reference this thread there.
Copy and paste the following there.
https://www.eng-tips.com/viewthread.cfm?qid=501208
Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."