Pile Foundation

Basic parameters:

• Active/interactive reinforced concrete design
• Uplift resistance verification of tension piles, if applicable
• Optionally selectable automatic stress adaptation

Structural system:

• Definition of pile groups to derive the actions from lateral pressure
• Definition of the pile system (cross-section, shaft length, toe expansion, if applicable)
• Definition of the pile material (optionally with creep effects)
• Durability verification via exposure classes

Soil:

• Any number of horizontal layers
• Freely selectable soil parameters
• Assignment to soil types (backfill, soft layer, bearing layer)
• Special parameters for the calculation of settlements and negative skin friction (via total or effective stresses)

Ground surface:

• Horizontal ground top edge

Groundwater:

• Stagnant groundwater can optionally be taken into account. The buoyant unit weight of the water-saturated soil is automatically considered.

• Any pile loads in the form of vertical or horizontal head loads or head moments along the two main axes. Free assignment to types of actions according to EC 0 and to concurrency and alternative groups, if applicable.
• Optionally, a surface load can be defined in the immediate vicinity of the pile.
• Via interface to the program Soil Settlement SBR+, the soil settlement in the pile vicinity and, optionally, the generated negative skin friction can be calculated automatically.
• Via interface to the program Earth Pressure EDB+, optionally, an action caused by lateral pressure due to flowing soil can be calculated automatically.

Superposition:

The individual load cases are automatically superimposed and the decisive design combination is assigned to each verification.

• Optional non-linear design in a second-order analysis with non-linear internal forces and material behaviour
• Continuous reinforcement over the total length or over specific sections
• Special setting options for serviceability (minimum eccentricities, min A_s for compression members)

• Determination by specifying characteristic total resistances (separately for compression and tension)
• Evaluation of static pile test loads (data-entry dialog and automatic/specific evaluation of any number of measuring series) → Resistance-settlement curve
• Evaluation of dynamic pile test loads (data-entry dialog and automatic/specific evaluation of any number of measuring series) → Resistance-settlement curve
• Determination of the resistance-settlement curve from empirical tabular values for end-bearing pressure and skin friction specified in the recommendations of the pile work group “EA-Pfähle”

Determination by specifying subgrade reaction moduli and subgrade areas:

• Automatic derivation of the subgrade from soil layers and soil properties
• User-defined subgrade areas
• Optional automatic modification and setting of the subgrade areas with calculation functions (constant, linear, parabolic)
• Automatic inclusion of the two- and three-dimensional earth resistances in the subgrade areas

• User-defined specification of the greatest permissible displacements in the three main directions and as a resultant

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• Comparison of pile settlement and soil settlement with representation of the neutral points in the serviceability and ultimate limit states for the derivation of negative skin friction
• Mapping of the resistance settlement curve for the end-bearing pressure, the skin friction, and the pile bearing capacity derived from empirical values or test loading
• Design internal forces for compression and tension piles in the serviceability limit state SLS and the ultimate limit state ULS.
• Mobilised subgrade stresses, both in the direction of the main axes and as a resultant
• Superposition of the subgrade stresses with the earth resistance to represent the required stress limitation and the relocations of the subgrade stresses to greater depth if applicable.
• Deformation of the pile along the main axes and as a resultant in the SLS
• Representation of the selected and required reinforcement

• Soil Settlement SBR+ (calculation of the decisive settlement in the pile environment to determine the negative skin friction)
• Earth Pressure Calculation EDB+ (calculation of the decisive lateral earth pressure and the earth resistances)
• Reinforced Concrete Column B5+ (calculation of the pile as a column on elastic foundation in accordance with the subgrade reaction modulus method)

• DIN EN 1997
• ÖNORM EN 1997
• BS EN 1997

• DIN EN 1992
• ÖNORM EN 1992
• BS EN 1992