Patent ID: 8926227
Filing Date: 2015-01-06
Classification: E02D

Abstract:
1. A method of raising a building structure with respect to the ground comprising the steps of: forming a mat having a plurality of through holes, each through hole is surrounded by a plurality of upwardly-projecting ties; inserting through each of the plurality of through holes a respective foundation pile; attaching to each foundation pile a respective lifting device, which on one side rests on the top end of the foundation pile and on the other side is secured to the upwardly-projecting ties of the foundation pile which act as reaction members; exerting thrust on the foundation piles by the lifting devices to lift the building structure with respect to the ground; fixing each foundation pile axially to the mat once lifting is completed; dividing lifting of the building structure into a succession of lifting steps; establishing a predetermined lifting value for each lifting step; at each lift step, real-time measuring the actual lift of each lifting device; at each lifting step, operating each lifting device to expand the lifting device by exactly the predetermined lifting value by feedback controlling each lifting device using the actual lift as a feedback variables; and wherein after driving in all the foundation piles and before raising the building structure with respect to the ground, further including the step of removing the ground and any existing foundation structures from underneath the mat, so that the mat and the entire building structure above the underside of the mat are supported solely by the foundation piles.