LPILE Group Effects

• Aug 13, 2021

• #2

highlander1

Geotechnical

Oct 23, 2018

5

LPILE is only for single piles..

 

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• Aug 13, 2021

• Thread starter
• #3

cad0211

Structural

Mar 1, 2018

19

What about the p-multipliers for group effects?

 

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• Aug 13, 2021

• #4

MTNClimber

Geotechnical

Jul 24, 2018

661

I concur with CAD. P-Y Multipliers can be used to account for closely-spaced piles.

 

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• Aug 13, 2021

• Thread starter
• #5

cad0211

Structural

Mar 1, 2018

19

Do you know how to do that? I am only given one value for the p-multiplier in my soils report (0.75) but I see in the manual that you must put it based on distance from pile head.

 

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• Aug 14, 2021

• #6

GeoPaveTraffic

Geotechnical

Nov 26, 2002

1,557

The distance is the depth, i.e. the distance below the top of the pile.

You may want to discuss this someone more familar with this type of analysis if it is important to the project since your experience with the software appears limited.

Mike Lambert

 

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• Aug 16, 2021

• #7

MTNClimber

Geotechnical

Jul 24, 2018

661

Go to Modifications Factors for P-Y Curves and fill out two rows for Depth Points. I don't know how your pile cap set up, pile length, and soil layers but one example would be:

Depth Point, Distance from Pile Head, P-Multiplier, Y-Multiplier
1, 0, 0.75, 1
2, 50, 0.75, 1

 

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