×
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

Double Retaining Wall System

Double Retaining Wall System

Double Retaining Wall System

(OP)
thread507-193368: Parallel Retaining Walls

It has been suggested that a temporary sheet pile wall is installed close in front of a permanent mass concrete wall. The sheet pile wall is to be tied back to the mass concrete wall at two locations and the space in between the two then back-filled. I am having difficulty finding any references for the behaviour of the filled soil between the two structures. I saw a similar thread (referenced above) but links to the information are no longer available and I was just wondering if anyone could provide new links to this type of situation.

The mass concrete wall is already designed and I am involved in checking its capability to resist the anchor forces due to installation of the sheet pile wall.

Will the filled soil between the structures behave like a silo? Is it possible that passive resistance to one wall and active pressure on the other wall will occur? Is it over conservative to assume that the pressures cancel out and therefore ignore them when checking the capability of the mass concrete wall to resist the anchor forces? Is this just an impractical system?

http://s12.postimg.org/nyp9rxrv1/Double_Retaining_...

RE: Double Retaining Wall System

I would say there would be active pressure on both walls. You might develop passive pressure against the concrete wall if the gap between the two walls was very large, but pressure would tend to balance if the gap is small.

BA

RE: Double Retaining Wall System

Neither wall can likely rotate sufficiently for active pressures to develope. Its possible the top third of the sheet pile wall may deflect sufficiently to allow active pressures to develope. At the very least these walls should be designed for at rest pressures. If the anchor forces were sufficient and the backfill were saturated(strength reduced sufficiently), a passive failure plane could occur between the walls. Here is a Navy reference that may be of help.

http://www.publications.usace.army.mil/Portals/76/...

RE: Double Retaining Wall System

If they are that close wouldn't the sheet pile wall be subjected to the "silo" effect? I'd think so . . .

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