Ground Anchors for Soldier Pile Wall
Ground Anchors for Soldier Pile Wall
(OP)
What is a reasonable number for the maximum tension load on a tieback for a temporary soldier pile wall?
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Ground Anchors for Soldier Pile Wall
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RE: Ground Anchors for Soldier Pile Wall
www.post-tensioning.org.
www.PeirceEngineering.com
RE: Ground Anchors for Soldier Pile Wall
In my area most of the contractor's prefer to keep their anchors to less than 150kips. This keeps the size or their rams somewhat reasonable and easy to move around in the field with a skid steer.
RE: Ground Anchors for Soldier Pile Wall
PEInc is spot on with the testing criteria.
dcarr82775 - what do you mean when you say that for long bond lengths "you really are not transferring much load into the soil?"
If the tieback load isn't being resisted by the soil its bonded to, how can it work?
RE: Ground Anchors for Soldier Pile Wall
I suggest you to follow BS 8081: British Standard Code of Practice for Ground Anchorages.
The code describes in detail about ground anchor design, installation, and testing. This code request for acceptance test upto 125% of the design load, on any individual working anchor.
RE: Ground Anchors for Soldier Pile Wall
What I meant was that tests have shown diminishing returns with very long bonded lengths. The load simply doesn't get to the far end of the anchor when it is stressed (it may get down there later as load comes off the upper portion of the bonded length). Just saying that it is a bad idea of use very long bonded lengths.
RE: Ground Anchors for Soldier Pile Wall
RE: Ground Anchors for Soldier Pile Wall
The smaller the ratio Ea/Eg (means anchor embedded in hard soils), the greater the stress concentration at the top end of anchor bond length. The above also implies that uniform bond stress will be developed if anchor embedded in soft soils.
(see "Foundation in Tension: Ground Anchors ", Chapter 4: Transfer of Load in Anchors and Associated Problems , by T.H. Hanna)