Retaining Wall with intermediate slab
Retaining Wall with intermediate slab
(OP)
I have came across an interesting type of retaining wall I had never seem before. I found this on a Brazilian book on retaining walls, and the particular feature I am interested in is the "intermediate slab" and shown in the attachment. It appears that the intermediate (or relieving) slab basically "reboots" the laretal earth pressure. I am wondering if anybody has come across this before. The book provided no references and I have not seen this in any geotech book before. Any help with background material or personal experiences would be highly appreciate.
Thanks.
Thanks.





RE: Retaining Wall with intermediate slab
RE: Retaining Wall with intermediate slab
It would seem to me that the intermediate slab would have to be very stiff for this to work and therefore would require a lot of steel.
Mike Lambert
RE: Retaining Wall with intermediate slab
On the previous pages, it defines alpha = slope of the soil above the wall (zero in this case, since it is flat).
phi1 = friction angle of the wall (Coulomb theory) = 0 (doesn't this essentially makes it a Rankine theory?)
Theta = angle between soil-side face of wall and vertical (zero in this case, since wall is flat on the soil side).
RE: Retaining Wall with intermediate slab
MiketheEngineer - With a gravity wall as shown without the intermediate slab, the backfill doesn't help resist overturning unless you account for friction between the backfill and the wall. So by adding the intermediate slab, they acutally increase the resistance to overturning. Additionally, the method is showing a smaller driving force trying to overturn the wall, this is the interesting part of the concept.
Mike Lambert
RE: Retaining Wall with intermediate slab
RE: Retaining Wall with intermediate slab
RE: Retaining Wall with intermediate slab
RE: Retaining Wall with intermediate slab
Garth Dreger PE - AZ Phoenix area
As EOR's we should take the responsibility to design our structures to support the components we allow in our design per that industry standards.