The example of a 3 x 3 pile group in Basile (2020) is analysed using the analysis mode of linear analysis based on elastic solutions in the PileGroup program. In this example, the piles are constructed in a homogeneous elastic soil layer with a Young’s modulus of 50 MPa and a Poisson’s ratio of 0.5. The Young’s modulus of the pile material is 30 GPa. The pile length is 20 m and the pile diameter is 1 m. The spacing between the piles is 3 m.

This example is from the analysis of a 3 x 3 pile group, as documented by Pirrello and Poulos (2014). The pile group consists of piles with a diameter of 0.5 m and an individual length of 15 m. The piles are arranged with a spacing of 2 m between each pile, both horizontally and vertically.

This validation example is based on the model test results of a group of piles embedded in sand as reported in Davisson and Salley (1970). A group of six tubular aluminium piles of external diameter of 12.7 mm and wall thickness of 0.8 mm. The piles were embedded in a tank of dry fine sand to a depth of 0.533 m and loaded through a pile cap just above the level of the sand surface. The shear modulus (G) of the sand is proportional to the depth below the sand surface with the

In this tutorial example, the use of the PileGroup program is demonstrated for analysing a pile group subject to TBM launching loading. This example involves a pile group consisting of 20 numbers of 1200 mm diameter CFA piles of 20 m long, which were spaced at three pile diameters in both directions.

In this tutorial example, the use of the PileGroup program is demonstrated for analysing a pile group in sand. This example involves a 4 x 4 pile group consisting of 16 numbers of 760 mm diameter driven prestressed concrete piles of 16.5 m long, which were spaced at three pile diameters in both directions.