CONTROL METHOD FOR SETTLED FOUNDATION SETTLEMENT Russian patent published in 2004 - IPC

FIELD: building, particularly control of foundations and structures, which are erected on foundations built on sedimentary soil. SUBSTANCE: method involves installing jack beam and double-action jacks with support plates; drilling wells from two foundation sides such that wells abut side foundation edges; inserting guide pipe casings with upper flanges into wells, filling tubes with powder material; securing vibrators on flanges; placing jack beam above pipe casings such that beam rests upon settled wall or column or suspending jack beam on column; installing plate of double-action jack on powder material loaded into pipe casings such that plate surface mate pipe section profile; connecting piston of each jack with jack beam; synchronous actuating vibrators and jacks in forward trace regime for driving powder material through pipe casing towards foundation bottom which results in foundation strengthening; actuating jacks in reverse trace regime for moving thereof towards jack beam; filling pipe casings with another portion of powder material and repeating above processes up to complete foundation strengthening for elimination of further foundation settlement, forced foundation extraction from soil for desired length; removing one jack from one pipe casing; connecting jack beam with the pipe casing; joining support plate of another jack with another pipe casing; actuating the jack in reverse trace regime and pulling out pipe casings. EFFECT: reduced labor consumption during control of foundation settlement. 2 cl, 2 dwg, 1 ex, 1 tbl