TECHNIQUE OF FOUNDATION REINFORCEMENT Russian patent published in 2003 - IPC

FIELD: construction industry. SUBSTANCE: technique of foundation reinforcement includes digging of trench round the periphery of foundation, arrangement of reinforcement members in the form of reinforced concrete girdles and in their fastening together with braces. Novelty of technique lies in vertical submersion of tubes-cavity formers with closed lower ends into ground near foundation to be reinforced to level beneath bottom of reinforced foundation. Later when reinforcement members achieve initial strength tubes-cavity formers are removed and solidifying material is injected into formed cylindrical cavities under pressure or into lower part of cylindrical cavity located beneath bottom of foundation. Large-fragment material is poured and tamped down into ground of base before injection of solidifying material or solution fixing ground of base is pumped into ground mass beneath bottom of foundation before injection of solidifying material through cylindrical cavities. Lower part of cylindrical cavity located beneath bottom of foundation is filled with quicklime and tamped down before injection of solidifying material while reinforcing foundations on water-saturated bases. EFFECT: increased bearing capacity of foundation and prevented deformation of base and foundation in case of restoration of structures. 1 cl, 4 dwg