effectiveness of soil anchors in saturated sand
effectiveness of soil anchors in saturated sand
(OP)
Can anybody help me to find out if I can use a series of soil anchors to retain a 20m wall in a saturated sand medium?
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effectiveness of soil anchors in saturated sand
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RE: effectiveness of soil anchors in saturated sand
RE: effectiveness of soil anchors in saturated sand
As an alternate, if your sheeted excavation is not too large, you may want to internally brace the support walls.
Maybe you should talk to a local tieback anchor contractor, explain your situation, and get advice.
RE: effectiveness of soil anchors in saturated sand
I am hired to plan a retaining structure (a secant-piled or steel-pile wall) to retain a foundation pit of 90m to 60m having a depth of 20m. The GWL is 6m below ground.
I am not sure to propose a dewatering process, though I am quite aware that I have to deal with greater moments. Because the pit is quite big the dewatering process is going to cost a lot. In addition the average water level to be lowered is around 14m and it will not be easy to engage.
The pit is too big to be braced. May be the corners can be braced. I have some doubts about the ground tie back anchors' strength in sand medium.
I do appreciate your valuable contributions.
RE: effectiveness of soil anchors in saturated sand
f-d
¡papá gordo ain’t no madre flaca!
RE: effectiveness of soil anchors in saturated sand
Good Luck.
Tsoft; www.tsoftonline.com
RE: effectiveness of soil anchors in saturated sand
RE: effectiveness of soil anchors in saturated sand
Being a young geotechnical engineer and working as a researcher I feel like I am a bird lacking one wing.
That wing is the experience acquired in the field.
The present situation is that I am hired to estimate a retaining structure that is going to be built in the field that I mentioned before. I was wondering that if I would be too conservative if I recommend a dewatering system and my second concern was the effectiveness of the ground anchors.
Now I feel confident to have any kind of arguments with the client's engineers.
Thank you all!
Should I bother you if I ask one last question about anyone experienced in installing a bored pile in a sand medium. I think that we should bore with the casing and after concreting the casing can be removed. But will it be possible to remove a 30 meter casing? Because it is very common in Turkey to use secant piles as retaining structures it is cheaper than steel sheet piles the client would insist on installing secant-piled-wall.
RE: effectiveness of soil anchors in saturated sand
RE: effectiveness of soil anchors in saturated sand
Yes, if you have the right machine.
I just came back from a trip to Dubai and witnessed 30m piles in sand using a double rotating head machine. The machine rotates and vibrates the casing down in one direction and the C.F.Auger was removing the soil while rotating in the opposite direction. I believe the company was Korean.
Tsoft; www.tsoftonline.com