"KVASHA" PILE AND METHOD FOR DEEPENING IN SOIL Russian patent published in 1995 - IPC

FIELD: civil engineering. SUBSTANCE: opening members are placed in the lower part of hollow reinforced concrete pile. Cross section of a member is variable. Destructible concrete connecting strips of variable thickness are used to connect the members to one another. Member cross section and strip thickness go down, and diameter of the cavity between the members increases as structure bottom is achieved. Reinforcement of the opening members is prestressed Reinforcement of member upper cross section has eccentricity towards the cavity, and lower eccentricity directed to external side. According to the first option, hollow reinforced concrete pile is used provided with opening members. The members are placed in the lower part of the structure and integrated with connecting destructible reinforced connecting strips. The pile is immersed into the soil. Filling material in the cavity of the pile are compacted concurrently with destroying concrete connecting strips. According to the second option, a well should be formed in soil before immersing the pile. The pile is installed in the well and concrete connecting strips may be destroyed concurrently. Then the members are bent and pole open. EFFECT: simplified deepening, increased bearing capacity of the pile. 2 cl, 16 dwg