×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

FE core wall / floor slab junction

FE core wall / floor slab junction

FE core wall / floor slab junction

(OP)
I'm in the process of modelling a multi-storey building with RC floor slabs and core walls. I'm wondering whether, from the point of view of the design of the reinforcement in the walls, it is unconservative to have a 'hinge' (preventing the transfer of moment from the slab into the walls) in my model at the junction of the slab and walls?

I'd be interested to know how others model this situation - I realise that some moment will in reality be transfered from the slab to the walls - but I suspect that for a 380mm slab and 200mm wall its not going to be as much as my model is predicting (in which everything is continuous).

Any wisdom on this gratefully received.

RE: FE core wall / floor slab junction

One of my good colleagues used to consider the wall resisting a part of the Fixed end moment (Fem)from the beam(or slab) equal to:
Fem*{1-(Islab/Iwall)} ..and never allowed for Islab to be greater then Iwall.

This is a mere kind of interpolation between zero case (hinge) or full fixity case.

Best approach is to use a FEA, with rotational springs at the slab edges with stiffness equal to EI/L^3  of the wall . Or even better, use a mesh element for the wall.


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources