@FixedEarth
Thanks for your discussion and I think you may overestimate the ultimate lateral resistance of the loose sand layer and this is the reason why the bending moment and deflection from your analyses are significantly less than what we predicted. The ultimate lateral resistance of the...
Low shear force at the pile head doesn't necessarily mean that the resulted maximum bending moment will be low. More importantly, it depends on the soil stiffness around the pile, especially the top 10 m thick loose sand layer for this case. If the stiffness was very low, even a small shear...
Based on your information, the ground profile and the loads are roughly shown in the figure below:
The pile deflection and bending moment would look like this:
The p-y curves along the pile length within the loose sand layer are:
This just gives you some feelings about the p-y curves along...
Hi, it appears that the behavior of the pile under lateral loading would be governed by the top 10 m thick loose sand. You can refer to the p-y curves from API or Reese for the soil spring stiffness, however, it is generally non-linear. For this kind of problem, we usually use some lateral pile...
Just run some lateral force analysis for the pile with using either LPile or PileLAT 2014. No other quick ways apart from that. This is simply because the minimum pile length depends on the loading, soil types and strength and the pile top boundary conditions. It is up to the design requirements...
If you created the p-y curves correctly and applied those non-linear p-y curves into your structural model properly, then you should get roughly the same results. My understanding is that those p-y curves will vary with the depth since the ultimate lateral resistance varies with the effective...
p-y curves are empirical curves for the relationship between the lateral soil resistance and deflection. It is generated based on many factors such as pile size, soil type, soil strength and cyclic loading condition, etc.. It is a bit tedious to generate p-y curves manually. People usually use...
Hi,
You can use either LPile or PileLAT 2014 to generate p-y curves along the pile shaft and then compare those p-y curves with the values from the program you used. Not sure about your question on the vertical spring. But I guess that refers to t-z curves along the pile shaft which represent...
I got a pipe within the embankment and need to calculate the lateral stresses due to the compaction during the embankment construction. I got two ways to do it:
1. Using ko to calculate the horizontal stress based on the vertical stress. But Ko value is not only dependent on the friction angle...
I noted that people would use different expressions for set criteria of driven piles. For example, 4 mm/blow or 40 mm/10 blows. Can I say they are the same? Thanks.
