RU906194C - Method of erecting cast-in-place ferroconcrete pile - Google Patents

Description

The invention relates to construction, and more particularly, to methods for forming a printed pile in the ground.

A known method of erecting a printed reinforced concrete pile in the ground, including forming a well, installing a reinforcing cage and laying concrete mixture.

The disadvantage of this method is the high complexity of work associated with the need to drill a well.

The aim of the invention is to reduce the complexity of the work.

This goal is achieved by the fact that in the method of erecting a packed reinforced concrete pile in the soil, including forming a well, installing a reinforcing cage and laying a concrete mixture, forming a well and installing an reinforcing cage is carried out simultaneously using an electro-hydraulic device, the discharge head of which is located on the lower end of the carcass moreover, the laying of the concrete mixture is carried out simultaneously with the deepening of the electro-hydraulic device and the reinforcing cage.

The drawing shows a printed reinforced concrete pile, erected by the proposed method, a vertical section.

The erection of printed reinforced concrete

(L pile as follows.

with

The electro-hydraulic device 1 is placed inside the reinforcing cage 2, the discharge head 3 is placed on the lower end of the cage 2, fixed with a latch 4 and the device 1, which is, for example, fixed, by welding, on the fixture 5 in the upper part of the cage.

Then, an electro-hydraulic submersible device 1 with attached thereto

reinforcement cage 2 is installed vertically in a small straight. Through pipe 4i, water 6 is supplied to the discharge head 3 of device 1 and the current pulse generator is turned on. In this case, between the positive 7 and negative 8 electrodes of the head, pulsed electric spark discharges begin to appear, creating powerful electro-hydraulic shocks.

The pressure pulses of electro-hydraulic shocks push the soil 9 in all directions, forming a cavity 10 under and around the discharge head 3 of the device 1 of significant size, into which the device 1 is immersed (and, in fact, falls) together with the reinforcing cage 2.

After the device 1 is immersed in 0.51, 0 m, the water supply is stopped, replaced by the concrete mortar, and by the action of electro-hydraulic shocks, the device 1 is immersed together with the reinforcing cage 2 to a predetermined depth. In this case, the concrete mortar fills the entire cavity 10, which is formed behind the head 3, which lowers into the ground, as a result of which a concrete pillar 11 with the reinforcing cage 2 inside it appears, i.e. sva.

After the device 1 is immersed to a predetermined depth, the current pulse generator and the concrete mortar supply are turned off, the reinforcement is fastened, and the device is removed, for example, by a winch or crane from the resulting pile through the cavity inside the reinforcing cage 2.

If the device is removed immediately after it has been submerged, when the concrete mortar has not yet set, then the solution, having closed, easily fills the volume occupied by the device, and the pile is solid, if the device is removed at the moment the concrete sets, the thickened the solution can no longer close, a smooth cavity remains inside the pile, and thus the pile becomes hollow.

To reduce the resistance of the solution when removing the device, top 12

the discharge head is conical.

Using the described method by combining manufacturing processes and

submersion of piles makes it possible to simplify and reduce the cost of the entire process of performing pile work.

Because concrete mortar is in the process of pile formation. continuously

subjected to the vibrating effect of electro-hydraulic shocks, it is densely compacted and the pile is very durable.

Due to the large unevenness of the walls of the pile obtained by this method, its adhesion to the soil increases many times after the soil, spread by electro-hydraulic shocks, returns to its original position and presses the pile formed in it.

Claims (1)

SUMMARY OF THE INVENTION A method for erecting a printed reinforced concrete pile in soil, including forming a well, installing a reinforcing bar frame and laying concrete mixture, characterized in that, in order to reduce the complexity of the work, the formation of the well and the installation of the reinforcing frame is carried out simultaneously with an electro-hydraulic device, the discharge head of which is located on the lower end of the frame, and the concrete mixture is laid simultaneously with the deepening of the electro-hydraulic device and the reinforcing frame.