# What are py curves?

## What are py curves?

P-Y curves are the numerical models used to simulate the response of soil resistance (p, soil resistance per unit length of the pile) to the pile deflection (y) for the piles under lateral loading.

What is PY analysis?

The p-y analysis is a numerical model that simulates the soil resistance as predefined nonlinear springs, where p is the soil pressure per unit length of the pile and y is the pile deflection. The soil is represented by a series of nonlinear p-y curves that vary with depth and soil type.

What are laterally loaded piles?

In a laterally loaded pile group, each pile pushes the soil in front of it (in the direction of the applied force). Movement of the piles placed in the first (leading) row in the direction of the applied force is resisted by the soil in front of it.

### How do you find the lateral capacity of a pile?

According to the Technical Code for Building Pile Foundations [25], the calculation formula for the lateral bearing capacity of a single PC pile is expressed as where = design value of the lateral bearing capacity of single PC piles (kN); = reduction coefficient, generally taken as 1.0; = allowable lateral deflection …

How are p-y curves used in pile analysis?

From the 1970s, Further modification and improvement have been given to the p-y method. Instead of giving inputs for the nonlinear spring constant (i.e., the values of the spring constant as a function of pile deflection), p-y curves are given as inputs to the analysis in the p-y method.

How are p-y curves used in rock socket?

Pile Group Analysis, Laterally Loaded Piles, P-Y Curves and Rock Socket. P-Y curves are the numerical models used to simulate the response of soil resistance (p, soil resistance per unit length of the pile) to the pile deflection (y) for the piles under lateral loading.

#### How are p-y curves used in lateral load analysis?

P-y curve Method P-Y CURVES p-y model used for analysis of laterally loaded piles Figure 2 Schematic showing p-y model used for analysis of laterally loaded piles x 1 x 2 x n x n-1 Lateral load Nonlinear springs il – F/L) Pile deflection,y (L) Increasing depth, x

What are the elements of a p y curve?

• Elements of a P-Y curve (preferred terminology) • Commonly used P-Y Curves (empirical basis) • The analytical methodology • Possible limitations/challenges