Pile with elastic propreties

[rodainnajjar1229]

dear sir
i have to define raft with piles foundation.  i defined raft with th=1000mm kz=1250 Kn/m3 ((according per soil report )
but i dont what value kx.ky .kz for pile 600 mm l=4m
 kindly find attached pictures
best regards

[tony.ridley]

Soil spring defined on a node is the spring constant from your soil report, converted to a kN/m value by using the area of the pile that contacts the soil (either on the pile shaft or on the base).

[athurD]

Thanx tony.

You can send  for specific examples.

thax.

[DennisVDijk]

Good morning,

For pile foundations I use Elastic ground for bars, to simulate horizontal ground support. See attachment.

You can calculate Ky and Kz according to the theory of menard..

Best regards, 

A&I│KWANT

adviseurs & ingenieurs

Dennis van Dijk

Structural engineer

[athurD]

Thax you.

You can shared theory of menard.

Pleas.................

[rodainnajjar1229]

dear sir

kindly find attached file
best regards

[athurD]

Please......

[DennisVDijk · Accepted solution]

Good morning,

For kz you can aply the same value as under the raft foundation.

For Ky and Kx you can use the formula according to Menard, see attachment.

I traslate the document from Dutch to English, some words migth not be correct but the formula is the same.

If you want to know more about this theory you can find it on the internet. 

I hope this would help.  

Best regards, 

A&I│KWANT

adviseurs & ingenieurs

Dennis van Dijk

Structural engineer

[athurD]

Thax Dennisveendam.

So you can given examples???

Thank you.

[DennisVDijk]

Hello,

Attached you find an example of the bridge i made a screenshot of.

In this case there where two pile in one row and i aplleid two different Ky and Kx values because in this case the lower layer was moch stiffer. You can put de Menard formula in a spreadsheet and calculed the Kh value (kh = Ky and Kx)

The only parameter you need is qc from your sonding graff.

Best regards, 

A&I│KWANT

adviseurs & ingenieurs

Dennis van Dijk

Structural engineer

[athurD]

Thank Dennisveendam.

So you can explain coefficient n and d.

Please see picture.

[DennisVDijk]

Good morning,

n =  the number of piles in an row

d = diameter of the pile

Best regards, 

A&I│KWANT

adviseurs & ingenieurs

Dennis van Dijk

Structural engineer

[athurD]

Thank Dennisveendam.

You see picture. So n =3 or n=2 ????

Please see picture Attachment.

[athurD]

Please help ?

Thax

[DennisVDijk]

AthrD,

I wrote an example for one pile that you could aply on your model, see attachment.

You only need to change qc if necessary.

Best regards, 

A&I│KWANT

adviseurs & ingenieurs

Dennis van Dijk

Structural engineer

[athurD]

Thank   Dennisveendam .

But Foudation cap pile  of me is 4 pile. 

Kx, Ky = n x d x kh = 4 x 0.6 x 15636 = 37526,4  Please see picture .

right or wrong ?????  thank you

 

[DennisVDijk]

wrong,

for Ky and Ky = 9000kPa, you need the elastic value of one pile.

[athurD]

Thanx

Dennisveendam .

But why sheet caculation of you . n = 2. ???

Please see picture .

[rodainnajjar1229]

thank you for your explaining but i have to put kx ky kz for pile in kn/m

i calculate it in kn/m2 as your explaining  

 how to converte to kn/m

kx (kn/m2) * (diameter)  or what ??

regards

[athurD]

THank Dennis van Dijk.

I think kx,ky (kN/m3) convert to  kx,ky(kN/m) =  Kx,ky(kN/m^3) * Ac.  With Ac is area of pile.

Thank you. You is nick skype ??