SU1765299A1 - Method of erecting bored piles - Google Patents

Abstract

SUMMARY OF THE INVENTION: A method for constructing a bored pile includes forming a well, immersing a support shoe with a glass in it, installing a central hollow perforated reinforced concrete bore into the glass, and compacting each backfill layer by immersing the surrounding barrel of the block with diverging wings. After filling the well to the full height, the trunk is combined with the blocks by injecting hardening material under pressure into the hole cavity. 3 sludge,

Description

The invention relates to the field of construction and can be used in the manufacture of pile foundations for civil and industrial buildings.

There is a known method for the construction of a bored pile, which includes immersing into the near-war soil the elements diverging along the height of the barrel with the location of their ruis 1.

There is a method of construction of a bored pile, including the formation of a well, the installation of a central hollow reinforced concrete shaft and layering of structural material with compaction of each layer 2.

The disadvantage of this method is the low bearing capacity of the bored pile and the laboriousness of its construction.

The purpose of the invention is to increase the carrying capacity and reduce the complexity of the construction of a bored pile.

Figure 1 shows the finished bore; Fig. 2 illustrates a sealing support block; on fig.Z - section aa in figure 2.

The method of erecting a bored pile includes the formation of a well 1, immersion in it using an inventory pipe (not shown) of the carrier shoe 2 with a glass 3, installing a central hollow perforated reinforced concrete shaft 4 held in a vertical direction by a conductor (not in the drawing shown).

Then a portion filling of the well 1 is effected, for example, with a ground height h determined from the relation:

l-LrsUb

P Kc AO (RS -RZ) -RS AC where RS is the required density of the compacted backfill material, t / m3;

Ub - net block volume, m3,

Kc is the coefficient depending on the type of near-thawed soil and caused by maiming

N5 O O

the diameter of the well in the process of immersing the bearing sealing unit,

for loam and clay Kc 1.1; for sandy loam, X; 1.4;

AO - well cross-sectional area, m2,

ru - density of unconsolidated backfill material, t / m3,

Ac is the gross cross-sectional area, m2.

Immersed into the ground is the enclosing shaft 4, which seals the supporting block 5 with divergent wing 6s with bevels 7.

Such operations are carried out over the entire height of the well 1, after which a bonding solution is pumped into the barrel 4 under pressure, rejuvenating the joints of the barrel with the sealing blocks 5 and the backfill material. For ease of transport, the sealing support unit 5 along the perimeter is tied with soft wire 8.

Claims (1)

Claims The method of construction of a bored pile, including the formation of a well, the installation of a central hollow reinforced concrete shaft and layering of structural material with compaction of each layer, characterized in that 0 five 0 five 0 In order to increase the carrying capacity and reduce the laboriousness of the erection, a perforated barrel is used and compaction of each backfill layer is carried out by immersing into it an enclosing barrel of a block with divergent wings, and the height h of the backfill layer is determined from the ratio h .1А Ub KS JSC (/ OS-RZ) -Re As where density of compacted backfill material is required, t / m3; Ve is the net block volume, m3; Кс is the coefficient depending on the type of near-soil soil and due to an increase in the diameter of the well during the immersion of the bearing sealing block: for loams and clays Ks 1.1; for sandy loam, 4; AO - well cross-sectional area, -m2; / Oz - density of unconsolidated backfill material, t / m; AO - gross cross-sectional area, m, after the well has been filled to the full height, the barrel is combined with blocks by injecting hardening material under pressure into the barrel cavity. Zl  i-fTn U / eight / N FIG. 2 Aa Fig.Z