The OpenSees Community

Dear all I am simulating a brige bent retrofitted with a self-centring brace.But I don't know how to model the SCB in the brige bent.I have tried to use tuss element to model SCB,but this method doesn't work.And here is my model code. model BasicBuilder -ndm 2 -ndf 3 #L column node 1 -1300 0 node 2 ...

model BasicBuilder -ndm 2 -ndf 3 node 1 +0.000000E+00 +0.000000E+00 -ndf 3 node 2 +0.000000E+00 +0.000000E+00 -ndf 3 fix 1 1 1 1 fix 2 0 0 1 uniaxialMaterial ElasticPP 1 +1.580000E+03 +2.000000E-03 -2.000000E-03 +0.000000E+00 uniaxialMaterial Elastic 2 0 0 frictionModel VelPressureDep 1 0.085 0.163 ...

mhscott wrote: ↑

Thu Sep 17, 2020 6:43 am

There is an error somewhere in your section definition. Try elastic materials and draw out the fibers and back out the process until you find the error.

Thanks for your suggestion,it's very helpful!

This is my model code: model BasicBuilder -ndm 2 -ndf 3 node 1 -1.300000E+03 +0.000000E+00 -ndf 3 node 2 +1.300000E+03 +0.000000E+00 -ndf 3 node 3 -1.300000E+03 +1.600000E+03 -ndf 3 node 4 +1.300000E+03 +1.600000E+03 -ndf 3 node 5 -1.300000E+03 +1.700000E+03 -ndf 3 node 6 +1.300000E+03 +1.700000E+03...

mhscott wrote: ↑

Wed Sep 16, 2020 6:25 am

Regardless, use constraints Transformation as Selim suggested.

Thank you !I will try.

selimgunay wrote: ↑

Tue Sep 15, 2020 10:16 pm

You may need to use constraints Transformation.

Are you using equaldof, rigid diaphragm or similar multi-dof constraints?

thanks for your suggestion，actually I am using rigid links to simulate the connection between supscture and bearing.

thanks for your suggestion，actually I am using rigid links to simulate the connection between supscture and bearing.

Hello,recently I am modeling a four span continuous beam bridge,but I just start learning opensees,when I run the analysis,some errors have appeared,and here is my code of this model,please help me fix the code ,thank you! model BasicBuilder -ndm 3 -ndf 6 # Node tag xCrd yCrd zCrd ndf node 1 +0.0000...

Hello,I am building a model of four span continuous beam bridge recently.When I run the analysis of eigen,some errors has appeared. I have put my tcl.file here,can you give me some suggestions of this model, tank you ! OpenSees > # modify2.tcl OpenSees > logFile "modify2.log" OpenSees > set systemTi...