RU2230156C2 - Structure for protection against landslip - Google Patents

Abstract

FIELD: building, particularly securing of sliding slopes, for development of built-up areas with unsteady soil consisting of crushed stone and clay. SUBSTANCE: structure includes drilled-and-filled piles arranged in rows and joined by grating, drainage system of porous concrete and discharge channel. Drilled-and-filled piles are arranged transversely to sliding slope. Alternate piles in row are formed as combined piles, which have lower part of heavy concrete, upper part of porous concrete and frame of non-corrosive reinforcement. Outermost and intermediate piles are completely made of heavy concrete. Structure has additional discharge channel formed as inclined drains into drilled wells starting in upper part end of combined pile. EFFECT: increased structure efficiency due to interception of underground water jets and decreased work content. 1 dwg

Description

The invention relates to the construction, in particular to the strengthening of landslide slopes, and can be used in the development of unstable sections of the built-up area, composed of gravel-clay soils.

Retention structures are known, including bored piles and grillages uniting them (V. Braslavsky. Anti-landslide structures on highways. - M.: Transport, 1985, Fig. 5.2, 5.4, p. 162, 163, 180).

The disadvantage of these structures is that to drain the soil, which, saturated with moisture, can be squeezed between piles, it is necessary to lay systems of drainage devices that collect and discharge groundwater. These are horizontal, vertical and combined drains, including horizontal borehole drains. The disadvantage of the latter during the jet movement of groundwater is low efficiency, because they may not intercept the underground stream.

The closest to the claimed invention in terms of the set of essential features and the technical result achieved is an anti-landslide structure comprising rows of bored piles joined by a grillage placed across a landslide slope and a drainage system made of porous concrete and a discharge channel (see RU 2122072 C1, E 02 D 31 31 / 08, 29/02, 11/20/1998).

The disadvantage of this anti-landslide structure is the limited possibility of using a sheet pile, which is practically impossible to immerse in soils, including large debris and lithified clay soils.

The objective of the invention is to increase the stabilization efficiency of landslide slopes due to the interception of jet streams of groundwater and reduce excavation.

The problem is solved due to the fact that in the anti-landslide structure, including rows of bored piles, united by a grillage, placed across the landslide slope, and the drainage system of porous concrete and a discharge channel, according to the invention, in a row, the piles are made combined through one - at the bottom of heavy concrete, and in the upper - from porous, and have a frame made of non-corroding reinforcement, and the extreme and middle piles in the row are made entirely of heavy concrete, while the landslide construction has an additional ADDITIONAL discharging channels are formed as inclined drains in drilled wells, the beginning of which is set at the end of the upper part of combined piles.

The technical result of the invention is to increase the effectiveness of the landslide structure by intercepting stream flows of groundwater and reducing excavation.

The essence of the invention is illustrated in the drawing, which shows the landslide structure.

The landslide construction consists of rows of bored piles placed across the landslide massif. Wells 1 are drilled for piles, reinforcing cages 2 are installed in them. Extreme and middle piles, as well as the lower parts of all piles, are made of heavy concrete 3. Combined piles have a frame made of non-corroding reinforcement 4 and the upper part is made of porous concrete 5. Row of piles united by grill 6. Dropping channels 7 are made in the form of inclined drains in drilled wells, the beginning of which is located at the end of the upper part of the combined piles.

The landslide construction is erected as follows.

Previously, by calculation, the location of the anti-landslide structure is determined. Wells 1 are drilled for a number of piles and reinforcing cages 2 are installed in them. Extreme and middle wells are filled, as well as the lower parts (below the landslide displacement surface) of intermediate piles with heavy concrete 3. Frames from non-corroding reinforcement 4 are installed in the wells of combined piles and these wells are filled porous concrete 5, combine all bored piles with grill 6, and additional discharge channels 7 are made in the form of inclined drains in drilled wells, the beginning of which is installed at the end of the upper part of the combined piles.

Claims (1)

An anti-landslide structure, including rows of bored piles united by a grillage placed across a landslide slope, and a drainage system made of porous concrete and a discharge channel, characterized in that in a row the piles are made combined in one row - in the lower part of heavy concrete, and in the upper part of porous and have a frame made of non-corrosive reinforcement, and the extreme and middle piles in the row are made entirely of heavy concrete, while the anti-landslide structure has additional discharge channels made in de inclined drains in drilled wells, the beginning of which is installed at the end of the upper part of the combined piles.