Ensoft LPile 2018.10.02

- Wag - Ensoft LPile 2018.10.02

Download Ensoft LPile 2018.10.02

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LPILE is a special-purpose and internationally recognized computer 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 the foundation to the soil is modeled using p-y curves generated internally using published recommendations for various types of soils, or user-inputted p-y curves. Specialized procedures are also available for computing p-y curves for layered soils and rocks. With the first release dating back to 1986, LPILE has continuously been developed and improved to meet user needs and incorporate state-of-the-art literature and procedures. HIGHLIGHTS

Multi-Layered Soil Media

Choose 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. Piles and Shafts Model piles as either vertical or battered and consider sloping ground surfaces by adjusting internal modification factors. Specify boundary conditions at pile-head as free-head, pinned or fixed with sway, elastically-restrained with or without sway. See response of pile under lateral or bending moment, or specify lateral displacement or rotation at pile-head. Modifiers

Specify user-defined multipliers to adjust for pile group effects in ly-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. Loading

Specify distributed lateral loading along the length of the piles and shafts.

Whats New in LPILE 2018:

Incorporate new features including

Estimate the moment-curvature for shafts with cores using H (weak or strong) sections

Estimate the moment-curvature for piles using H (weak or strong) sections

Option to include or exclude the layering correction for models with multiple soil layers

Use different p-y curve for soil resistance and soil pressure while using sloping ground and soil movement

Provides ability to analyze models with multiple load cases independently and produce results or warning if one or more load case fails to reach numerical convergence

Program checks factored moment capacity with ACI-318 based factors in Load and Resistance Factor Design (LRFD) models

Allows for the analysis of embedded piles with pile head that is below one or more soil layers

Provides feature to include any AISC section for nonlinear or elastic pile models either as driven piles or embedded structural inserts on drilled shafts

Structural model of pile sections can now include the confinement effect for rectangular and circular s hafts for moment-curvature analyses following the Mander, Priestley, and Park (1998) model for confined concrete

LPILE can now automatically build the full interaction diagram for all sections

Provides feature to turn off layering computations for all cases or only when soils are of the same type to help in studying layering impact on models

Include option to directly export plots to Microsoft Excel with pre-formatted tabs for numerical values and graphs

Longitudinal reinformcent can now be selected with user-defined bar area

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