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 a finite difference approach. The program computes deflection, bending moment, shear force and soil response over the length of the pile. 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 available for computing p-y curves for layered soils and rocks. Alternatively, user specified p-y curves may be used.
Choose from variety of built-in load-transfer (p-y) curves for modeling complex soil behavior under lateral loading. Some of the available curves include soft clay, stiff clay with or without free water, sand, liquefied sand, rock, Piedmont residual soil, cemented c-φ soil, Loess silt, elastic subgrade, and API soft clay with user-defined J. Alternatively, import your own user-generated p-y curves for analysis.
Specify user-defined multipliers to adjust for pile group effects in closely-spaced piles or to reduce pile response in liquefied layers for sustained long-term loading or seismic conditions. Consider soil-layering effects by adjusting p-y curves. Specify nonlinear resistance curves to consider tip shear resistance provided at the base of large diameter drilled shafts or short piles.
Specify distributed lateral loading along the length of the piles and shafts.
Compute the response of piles up to 50 different user-defined load cases. For LRFD driven analyses, user can specify the load factors or LPILE can choose them.
The average analysis takes only a few seconds.
Analyze different pile lengths to quickly determine the optimum pile penetration.
Plot the bending moment, shear force, mobilized section properties or curvature along the depth of the pile.
Compare the results of different load cases.
Detailed printer-friendly generated output files report all influencing parameters used for computation of internally generated p-y curves, deflection, bending moment, shear, mobilized soil reaction, moment-curvature, and more.