LPILE 2026.0

Perform rational procedures of pile analysis under lateral loading with set values by applying the P-Y method and solving multiple standard equations automatically in the application. Non-linear lateral load-transfer curves are calculated for computing deflection, bending moment, shear force and soil response.

LPILE is a special-purpose program based on rational procedures for analyzing a pile under lateral loading using the p-y method. LPILE solves the differential equation for a beam-column using nonlinear lateral load-transfer (p-y) curves. The program computes deflection, bending moment, shear force and soil response over the length of the pile.

As an option, components of the stiffness matrix at the pile head may be computed internally by LPILE so users can incorporate basic soil-structure interaction in their super-structure analyses. Another option from LPILE provides graphs of pile-head deflections for various pile lengths, to help users with optimum pile penetrations (for lateral response).

Nonlinear lateral load-transfer from the foundation to the soil is modeled using p-y curves generated internally using published recommendations for various types of soils. Special procedures are programmed for computing p-y curves for layered soils and for rocks. Alternatively, the user can enter manually any other externally generated ip-y curves. More