METHOD FOR STRENGTHENING OF STRIP FOUNDATIONS Russian patent published in 1998 - IPC

FIELD: construction engineering. SUBSTANCE: this relates to strengthening of foundations subjected to nonuniform settling down with their subsequent destruction. According to method, foundation foot can be widened or if this procedure gives no good results, foundation can be seated on cast-in-places piles. For this purpose, preliminarily drilled in line and close to foundations 1 are bore-holes 2, and from them directly under foundations and by means of widener facility created are widened spaces 3. For transfer of foundations onto cast-in-place piles, bore-holes are deepened 4 down to ground layers of high load-bearing capacity 5, and widened spaces 6 can also be created in bore-hole base. After lowering reinforcement into bore-holes if this is necessary, concrete mix is delivered into bore-holes under pressure by one known methods through pipes 7 which are provided at heads of bore-holes, then pipes are removes and bore-holes are liquidated. EFFECT: higher efficiency. 1 cl, 2 dwg