RU2002127704A

RU2002127704A - METHOD FOR STRENGTHENING THE PILED FOUNDATION OF SUPPORT

Info

Publication number: RU2002127704A
Application number: RU2002127704/03A
Authority: RU
Inventors: Анатолий Леонидович Лязгин; Сергей Васильевич Остробородов; Владимир Германович Ольшанский; Константин Павлович Шевцов; Геннадий Иванович Шемелин
Original assignee: Анатолий Леонидович Лязгин; Сергей Васильевич Остробородов; Владимир Германович Ольшанский; Константин Павлович Шевцов; Геннадий Иванович Шемелин
Filing date: 2002-10-16
Publication date: 2004-04-10

Claims

1. A method of reinforcing a pile foundation of a power transmission line support, including deepening anchor rods into the ground and connecting them to the foundation piles using rods, characterized in that at least two anchor rods are deepened near each pile at a distance from the axis of each pile of 2-5 the size of the cross section of the piles, and the rods are deepened at an angle to the longitudinal axis of the piles, comprising 3-5 °, and the value of the depth of the rods in the ground is determined from the ratio

where Tk is the magnitude of the pressing force, or pulling out the tangential force of the frost heaving, acting on the pile, TS;

Rsv - load-bearing capacity of piles to reinforcement, TS;

C is the bearing capacity of one running meter of the corresponding anchor rod, TS / m;

n is the number of rods placed around the corresponding piles.

2. The method according to claim 1, characterized in that the connection of the anchor rods with the corresponding pile is carried out using flexible rods, and removable spacer elements are installed between the upper ends of the rods and the pile head to provide additional interaction of the rods with the pile through them.

3. The method according to any one of claims 1 and 2, characterized in that the use of rods with a developed side surface, or a periodic longitudinal profile, or with a cross section in the form of a corner, or channel, or brand, go I-beam, or triangle, or rectangle or a square, or a ring, or in the form of a polygon with a central hole, the largest cross-sectional dimension of the rod being 0.15-0.20 of the largest cross-section of the pile.

4. The method according to any one of claims 1 to 3, characterized in that after deepening into the ground, the anchor rods are frozen into the ground using cooling devices, which are immersed in the ground next to the corresponding rods, or the cooling devices themselves are used directly as anchor rods ( cryoankers).

5. The method according to any one of claims 1 to 3, characterized in that after deepening the anchor rods into the ground, they are secured by the electrochemical method using the rods themselves as an anode.

6. The method according to claim 5, characterized in that when performing the foundation piles with metal and fixing the anchor rods in an electrochemical way, the piles are used as a cathode.

7. The method according to any one of claims 1 to 3, characterized in that the anchor rods are fixed in the soil by immersing them in pre-drilled wells filled with a composition that hardens with an increase in volume.