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Calculation of Foundations

It's a complete package for foundations analysis and design; because of its completness, flexibility ad user-friendliness it is a fundamental instrument for any kind of geothecnical project.

To calculate the bearing capacity of foundations, the following methods can be used: Terzaghi, Meyerhof, Hansen and Vesic. Such methods are based on different hypotheses regarding failure modes, making it interesting to compare the different results.

Normally, the allowable bearing pressure is determined for a given shape (square, rectangular, circular or ribbon-like) and stratigraphy.

The safety factor under effective load conditions is determined as the ratio between ultimate bearing pressure and the effective vertical stress.

It is possible to determine the settlement of foundations resulting from normal loads and from moments.

The calculation is performed at the most significant points and thus also the rotations due to differential settlement are determined.

The settlement can be determined for square, rectangular, circular or ribbon-like foundations.

The use of numerical methods allows you to determine immediate elastic deformation and the long term effects of consolidation separately.

The programme allows one to group together more foundations described individually and to evaluate the effect of the overloads induced by surrounding foundations. This option allows one to analyse more complex cases, like the influence of the neighbouring foundations, foundations of any geometry and foundations on heterogeneous materials. Due to the flexibility of the numerical approach, it is possible to perform the calculations in accordance with the most frequently used theories (Boussinesq, Terzaghi, Skempton).

The bearing capacity of the foundation piles of small, middle or large diameter can be determined in stratified, coherent or incoherent earth, under drained or undrained conditions.

Different formulae are used for driven piles (in steel or concrete) and for drilled piles, thereby taking into account the effects induced by drilling or pile driving.

Calculations to obviate the risk of seismic disturbances are also possible.

The formulae and experimental curves proposed by different authors are used, thus allowing the results obtained by different methods to be compared.

Point and skin resistance (whose sum constitutes the ultimate pile capacity) are determined separately, and thus the safety factor is determined for projected loads.

The programme performs the calculations for different families of diameters and lengths, the resultant chart allows the choice of the optimal diameter-length combination from an economic point of view as well.

 

 
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