Concrete pile made of such a concrete and method for drilling a hole adapted for receiving the improved concrete pile in a weak ground

摘要

The invention relates to a device for reinforcing a ground on which is disposed a loading structure, comprising a series of structural inclusions disposed in the ground and adapted to mechanically reinforce said ground, the inclusions having a diameter D comprised between substantially 0.2 m and 0.6 m, two adjacent inclusions being separated by a distance (A) such as 2DA10 D, the series of inclusions being made of a material having a Young's modulus of between 500 and 10,000 MPa, a load transmitting layer interposed between the ground and the loading structure, said layer having a Young's modulus less than the Young's modulus of the series of inclusions, a first nominal height between two adjacent inclusions of the series, and a second height less than the first nominal height at locations situated just above the series of inclusions, where the load transmitting layer is plastically compressed by the inclusions which partially penetrate within the load transmitting layer.