×
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

Concrete Arch

Concrete Arch

Concrete Arch

(OP)
In a concrete arch, pinned at both ends, what do you use to determine the maximum moment in the concrete arch member?

RE: Concrete Arch

A two hinged arched is statically indeterminite; you can use the force method, the displacement method, the column analogy. If you have Roark's Formulas for Stree & Strain there are solutions.

RE: Concrete Arch

(OP)
Right, I figured it would be easier on my head to use a three hinged arch.  So did the owner, and the E.O.R.  Now in the design of this arch are there any suggestions on the details for the hings at the top of the arch or the base?  A second question is what moment do you design the arch for?  How do you determine the amount of steel or reinforcement required?

RE: Concrete Arch

You need to do a structural analysis of your set-up. you can either do it by hand or by computer analysis. once you know your moment diagram you can determine the tension face and size your rebar accordingly

RE: Concrete Arch

The algorithm for determining the forces, stresses and deflections of the arch are based on the basic basic equations of analysis. But you need a mathematic model of the arch, as it's original shape gets integrated into the equations which isn't quite so obvious for their constant use in linear members.

Maximum bending and deflections come from point loads and unbalanced uniform loads.

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