Model a beam hanged to frame rafter

[ahmadmahrous_1]

Hi,

I want to model a beam that is supported by columns hanged from frame rafter as shown in attatched pic:

beams 7,8 are supported by  columns 4,5,6 which are hanged from rafter.

Thank You,

[Simau]

Hi @ahmadmahrous_1 

According to your screenshot you already modeled your structure.

So what is your probleme?

[ahmadmahrous_1]

What I am asking about how to model the load transfer scenario from beams 7,8 to 4,5,6 to the rafter

so the  beams 7,8 are continuous beam supported on 3 points and columns 4,5,6 takes reactions of beams as axial force then transfer it to the rafter as concentrated loads.

[Simau]

Scenarion 1

All your structure (1to8) is poured and supported till concrete setting

Scenarion 2

1 2 3 are poured and after concrete setting you add 4 5 6 7 8.
You may use Phases

[ahmadmahrous_1]

Could you please explain?

This is a steel structure all members are steel

[Simau]

After reflection, for your structure, it is not necessary to use the phases.

So concrete or steel structure, just run your model with all kind of loads you need

[ahmadmahrous_1]

Thank you @Simau 

I did but then the beams transfer load only to columns 4,6 and not 5 and act as simply supported beam not continuous as no support at column 5. How to tell robot that column 5 is also supporting the beams??

[Simau]

It depends of stiffness off different members

Please attach your model for analyse

[Simau]

if the stiffness of 4 6 is much greater than that of 5, 4 will not transmit any load

[ahmadmahrous_1]

All Members are of  the same section

Her is the Model I want results of beam 7,8 to be the same as 9,10 as they have the same load, section and length.

[Simau]

Something like this

model attached