METHOD OF REINFORCEMENT OF BUILDING FOUNDATION AND DEVICE FOR ITS EMBODIMENT Russian patent published in 2002 - IPC

FIELD: construction engineering; applicable in reinforcement of bases and foundation of buildings in their repairs or renovation. SUBSTANCE: method consists in that sections are pressed-in by hydraulic jack with subsequent adding and connection of pile with a new section by welding and concreting. Novelty consists in that reinforcing piles are pressed-in at an angle of 15 deg to foundation vertical surface, anchors are secured in foundation body, steel support is installed between anchors. Pressing-in of pile lower section with plugged lower end at adding stage is effected with the help of high-pressure pad (compressed-air jack). In this case, each next adding and connection of pile with as a new section are performed at rated force and the last section of pile is pressed-in up to rated force in pile with the help of hydraulic jack and without releasing load exerted onto it. Connecting members are installed and welded with steel support and upper part of pile last section. Then hydraulic jack is removed and pile hollow is concreted. Novelty in device for said method embodiment is that jack in adding stage is in the form of high-pressure pad (compressed-air jack) located between pressed-in pile with plugged lower end and steel support secured with the help of anchors to vertical surface of foundation. Used at last adding stage is hydraulic jack. EFFECT: higher efficiency and rate of work performance in reinforcing of building foundations and bases. 2 cl, 3 dwg, 1 ex