SU1599481A1 - Method of erecting building foundation in heaving soil - Google Patents

Abstract

The invention relates to the construction and relates to methods for constructing foundations from ramming piles in heaving soils of uneven density. The purpose of the invention is to provide uniform deformability and carrying capacity of the base in soils of uneven density is achieved due to the fact that the filling of the pits with bulk material is carried out to their full depth, and the wells are crushed to obtain a uniform density of the layer of abrasive sheath 7 in all the pits. At the same time, bulk material is added to the trenches 4, exceeding the smallest in volume. 17 il.

Description

(PU2.1

The invention relates to the construction, in particular to methods for constructing foundations from ramming piles in heaving soils of uneven density-i.

The purpose of the invention is to provide equal weight deformation and bearing capacity of the base of B soils of uneven density.

FIG. 1 shows the foundations erected in this way; in fig. 2-4 - stage ramming ravines of various sizes; in fig. 5-7 - the stage of filling of the pits with bulk material; in fig. 8-10 - stage of crushing identical pits with a volume equal to the volume of the foundation; in fig. 11 and 12 - stages of filling the bulk material in the pits, exceeding the smallest in volume; in fig. 13 and 14 - the stage of the subsequent vytram-: drilling the wells in the shape of the foundation; in fig. 15-17 - the stage of filling the pits with concrete.

The method is carried out as follows.

Working body 1 for ramming - no pits, for example, in the form of a cone; Visited to the mechanism of lifting - dropping, they hammer out the pits 2, equal to the size of the project foundation. In places of the construction site with the most dense soil. For these pits, the volume of the compaction zone 3 is determined.

which is the same, equal to the volume of the pit 2). At the same time, in trenches 2, formed in the most dense soils and being the smallest in terms of volume, material 5 is completely rammed into the surrounding soil, reaching the maximum density, and in the rest of the trenches 3, due to the fact that their depth is greater , the density of the bulk material 5 does not reach the maximum value, i.e., differs from the density of the antimoulding shell 7 of the trenches 2, which are formed in the densest soils and are the smallest in volume, which does not provide uniform deformation and carrying, her ability to reason. In this connection, the trenches 3, formed in less dense soils and exceeding in volume the smallest, make filling of material 5. The volume of bulk material that is poured into each trench 5

ten

20

25

determined by dependency

.

where y, f - the volume of the foundation.

After that, the subsequent wounding out of the wells 8 is performed, the volumes of the trenches are adjusted to the same size, corresponding to the volume of the trenches 2. At the same time, the bulk material 5 reaches the maximum density and in the trenches 3 formed

Then the volumes of the trenches 4 are determined in less dense soils, the same with

which is the same, equal to the volume of the pit 2). At the same time, in the trenches 2, formed in the most dense soils and being the smallest in volume, the bulk material 5 is completely rammed into the surrounding soil, reaching the maximum density, and in the rest of the trenches 3, due to the fact that their depth is greater, the density of the bulk material 5 does not reach the maximum value, i.e., differs from the density of the antimoulding shell 7 of the trenches 2, which are formed in the densest soils and are the smallest in volume, which does not ensure uniform deformability and gorge, her ability to reason. In this connection, the trenches 3, formed in less dense soils and exceeding in volume the smallest, make filling of material 5. The volume of bulk material that is poured into each trench 5

determined by dependency

.

where y, f - the volume of the foundation.

After that, the subsequent wounding out of the wells 8 is performed, the volumes of the trenches are adjusted to the same size, corresponding to the volume of the trenches 2. At the same time, the bulk material 5 reaches the maximum density and in the trenches 3 formed

in less dense ground, the same with

; on the remaining sections of the construction site, g1D-ki, the volumes of the sealing zones of which correspond to the volumes of areas 3 of the compaction of the excavations 2, compacted by the E most dense soils of the building site, according to the formula

V Pd,

where y, f is the volume of the r-th pit;

Vy is the volume of the compacted zone calculated for the section composed of the most dense soils; RY - natural density of soil and to

ramming;

Dral is the difference between the maximum and natural ground densities. In accordance with this calculation, the excavation of the pits 4 over the entire site by the same rammer to the various depths is carried out. As a result, all

the density of the bulk material of the excavations 2, which ensures uniform deformability and bearing capacity of the base.

After filling in trenches 2 and 8

35 concrete 9 throughout the entire site, concrete foundations with a antimold sheath 7 are formed of the same size, possessing uniform deformability and bearing capacity of the bases of soils of uneven density.

40

The use of the proposed method makes it possible to eliminate uneven precipitation of buildings and structures erected in heaving soils, to reduce the consumption of materials .j- and simplify the technological process of production of works on the construction of foundations.

Claims (1)

The invention of the method of construction of foundations of buildings The excavated trenches 4 produce 50 pulling soils, including extruded ones in volume and density, compaction zone 3, which ensures uniform deformability and bearing capacity of the base. Next, all boiler pits are filled with different sized pits under each foundation with a volume, a large base volume, pits are filled with granular material to form an antineoplastic membrane, followed by vytrambovovy bulk material 5, then the wells in the shape of the foundation with the same points of the same tamping vytram-bulk granular material, characterized they make identical trenches 6 with a volume, so that, with ensuring uniform equal to the volume of the project foundation (or, the deformability and carrying capacity of density of the bulk material of the pits 2, which ensures uniform deformability and bearing capacity of the base. After filling in trenches 2 and 8 5, concrete 9 over the entire site forms uniformly sized concrete foundations with a antimold shell 7, which have uniform deformability and bearing capacity of the bases of soils of uneven density. 0 The use of the proposed method makes it possible to eliminate uneven precipitation of buildings and structures erected in heaving soils, reduce the consumption of materials j- and simplify the technological process of the production of works on the construction of foundations. The invention of the method of construction of foundations of buildings   heaving soils comprising vytrambovyvanie raznovelikih pits under ka "dy foundation volume greater than the volume of the foundation, the filling of pits particulate material to form a shell protivopuchi- grained, subsequent vytrambovynovani in ground of uneven density, the bulk material filling of pits is performed on the whole of their depth, and skvazhiny- fingering to obtain a uniform density of the layer of the anti-mucous membrane in all trenches, while adding the bulk material into the trenches, exceeding guides smallest volume, wherein AVJ- volume filled in each trench of bulk material is determined dependent Rig.2 (rig 5 AV; V.-V, where vfj ()) p is the volume of the i-th ditch; Uu is the volume of the compaction zone, calculated for the area composed of the most dense soils; Pet - natural soil density to ramming; Ap - the difference between the maximum and natural ground density; C, is the volume of the foundation. (rig. ag.Z 9g 7 ag.d Vuz.Q (Reg. 9 (Rig. G1 S8 . 13 ig.yu ig. 12 . H . 15 N. NV FIG. 17 9g sixteen