Cable Connection (Pulley/Roller)

[Jwiggins]

I'm designing a simple guyed structure where the guy wires are strung across horizontal arms. Typically called a "Sidewalk" guy.

The guy cable starts by attaching to the top of the pole and then drapes across a frictionless pulley on the extended horizontal arm before anchoring to the ground.

When I model this in SAP2000 I can not figure out how to get the cable to maintain the same tension across this connection. SAP models the cable as two separate cables, each fixed to the horizontal arm.

I have tried using releases/partial fixity but cannot get the model to analyze the cable as a continuous cable.

Is there any way to span one cable across multiple connections? Or to model a connection as a pulley?

Thanks

 

[Jwiggins]

Dang... and here I thought it was a simple question...

Is SAP seriously not capable of modeling a cable over a frictionless connection? Doesn't this happen pretty much all the time? Am really I the only one who has ever had this problem?

Starting to regret purchasing this senselessly complex behemoth of a program. Arguably the least user-friendly interface I've ever seen...

Sorry, I've just posted this question on a few boards and have scoured all of the interwebs to no avail

 

[WillisV]

I have tried the same thing with little success, I'll be interested in hearing if you find anything.

 

[jdgengineer]

I would recommend calling/emailing CSI technical support. They should be able to give you modeling advice. They may take awhile but they are usually pretty helpful.

 

[WillisV]

FYI its not possible:

https://wiki.csiberkeley.com/display/kb/Cable+Tips