Laterally loaded pile next to pipeline

[geoengman]

Hello,

I'm working on the following problem and would like to see if anyone out there has solved something similar or has a recommendation for a paper or solution methodology:

There is a 8 ft diameter vertical drilled shaft subject to lateral loads next to a buried 12 in diameter horizontal pipeline. I need to approximate the stress on the pipeline that will result from the lateral movement of the drilled shaft towards the pipeline.

Thanks

 

[FixedEarth]

Lateral stress in this case varies with pier depth-it is higher at the top near the lateral load point of application and disiipates to a small value at 5 to 8 ft depth. The effect of this lateral stress can be minimized if you limit your lateral deflection at the ground surface to between 0.3" - 0.5". A sketch and some soils values will help.

For exact equation, refer to eqn 5.60e on page 240 of "Engineering Design in Geotechnics", 2007, Azizi. I got my copy from the UK Amazon, direct from the author (Approx $50). It is overpriced in the US Amazon site. It is now my most enjoyable geotechnical reference and has just about everything any foundation design text covers.

However, if you need a fast solution, go to

http://www.Dcalc.us

and look at "LATPILE" program. This program has a column whcih displays the lateral pressure with depth after you input your soils parameters and pier geometry.