RU1768712C - Foundation strengthening method - Google Patents

Abstract

SUMMARY OF THE INVENTION: Strengthen the existing foundation. To do this, the top of the foundation is reinforced with concrete. Blocks with beveled inner edges in the upper part and protrusions in the lower part are installed on opposite sides of the foundation. After applying the antifriction material, the blocks and the foundation are compressed with the strands passed through their body. 3 silt

Description

The invention relates to the construction, namely to the strengthening of the foundations of buildings and structures, and can be used in their repair and reconstruction.

There is a known method of reinforcing the foundation, including installing blocks around the foundation, the lower part of which is beveled and the upper part with a ledge, pushing the blocks into the ground, tightening the blocks.

The disadvantage of this method is the need for significant power equipment to push the foundation blocks and pull them in the horizontal direction. In addition, it is necessary to provide for the presence of powerful structures that absorb horizontal force and bending moment that occurs when the blocks are pulled together.

There is a known method of strengthening foundations, including installing blocks along the perimeter of the foundation of the blocks, applying an antifriction coating to the surface of the foundation and side faces of the blocks, and tightening the blocks and the foundation with strands. In this case, the outer faces of the blocks at the places where they pass through are made beveled to the vertical axis of the foundation

The disadvantage of this method is the difficult CTD of its implementation, since it is necessary to violate the wall of the building to pass the beams, the difficulty of ensuring that the blocks slip on the disturbed surface of the existing foundation even taking into account the application of the antifriction layer, the high metal consumption on the pressure plates and thrust beams.

The purpose of the invention is to simplify the method.

The stated goal is achieved by the fact that in the method of reinforcing the foundation, including installing blocks on opposite sides of the foundation with bevels on the side surface, applying antifriction material to them, and compressing the blocks and foundation with the strands passed through their bodies before installing the blocks, tilted by bevels to the axis of the foundation and having a protrusion with an inclined upper surface in the lower part, the foundation is built up while its extended part is tapered (Л

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lateral faces to the axis of the foundation, and the blocks before crimping them and the foundation are placed with a gap relative to the side surface of the existing part and bringing the protrusions under the base of the foundation.

In FIG. 1 shows a reinforced foundation and building it with concrete; in FIG. 2 - foundation before commencement of crimping; in FIG. 3 - foundation after completion of its reinforcement.

The foundation reinforcement method is carried out in the following sequence. They build the foundation 1 in the upper part with concrete 2, with the extended part being made with side faces chamfered to the foundation axis, apply antifriction material to them, install blocks 3 on the opposite sides of the foundation with bevels on the side surface, with antifriction material previously applied to them 4 Blocks 3 are placed with a gap 6 relative to the lateral surface of the existing part of the foundation 1 closely with their bevels to its extended part and bringing the protrusions 5 under the base of the foundation. Then, metal ties 7 are passed into the channels provided in advance at the bevels level and tensioned by jacks until the gaps 6 are closed.

As a result of the transfer of horizontal forces from the tensioned weights 7 to the blocks 3, the latter create a compression of the soil under the soles of the blocks 3 and at the same time unload the reinforced foundation 1 due to the wedging action when the blocks 3 move along the block 2. The lower protrusions 5 prevent soil outflow into the gaps 6, create additional horizontal compression of the soil under the sole of the reinforced foundation 1 and are the fixators of the position of the blocks against their vertical displacement.

Claims (1)

SUMMARY OF THE INVENTION A method of reinforcing a foundation, including installing blocks on the opposite sides of the foundation having bevels on the side surface, applying anti-friction material thereon, and compressing the blocks and the foundation with strands passed through their body, characterized in that, in order to simplify the method, before installation of blobs facing the axis of the foundation with bevels and having a protrusion with an inclined upper surface in the lower part, the foundation is built up with the implementation of its extended part with beveled axis of the foundation with side faces, and the blocks before squeezing them and the foundation are placed with a gap relative to the side surface of the existing part and the tabs under the base of the foundation. П П7 ТТтгггГПГГГГ7ГГПУГГП ГПТ ППГП7ПГ П77П / 1 / / Г FIG. I PA, s t,  P .- I. P; L I .i ..; K-ych /:  about st ttigshppppipshnpgtttl J / 7 / T / i / i / i // W 7T7JTfT / i // f § jtf / l // t / t // i  . . .- -about  ЩИ 1ПП) 1ППП1П1 7 / 1пШ1)} FIG. 2 FIG. 3