RU199103U1 - Construction of a foundation slab of honeycomb structures consisting of galvanized profiled sheets and monolithic reinforced concrete floors with natural ventilation in regions with permafrost and subsidence soils - Google Patents

Abstract

The proposed utility model is intended for the construction of foundations in regions with frozen and subsiding soils. The design of the honeycomb supporting plate ensures its bearing capacity during thawing and subsidence of the soil and consists of: impregnated with epoxy resin; - lower support monolithic reinforced concrete base; - upper monolithic reinforced concrete floor on galvanized profiled sheets providing a ventilation system; - supporting steel channels in the base and ceiling; - waterproofing and thermal protection of frozen ground from a layer of polystyrene concrete. honeycomb structure and monolithic reinforced concrete floors and foundations are determined by calculation and ensures the stability of the structure during thawing of frozen soil or subsidence.

Description

Description:

The proposed foundation slab consists of honeycomb structures of galvanized profiled sheets, combined in corrugations with fiberglass gaskets impregnated with epoxy resin, with reinforced concrete monolithic lower and upper slabs and natural ventilation through the corrugations of the supporting profiled sheet of the upper slab.

Vehicle tier:

On the territory of Russia, permafrost regions occupy up to 40%.

The most industrial and structurally reliable method is the use of pile foundations buried in a layer of permafrost soil.

From the lateral surface, the foundations are covered with non-porous soil, and between the floor of the first floor raised above the ground surface and the ground, air vents are arranged in the foundation structure, located along the perimeter of the building, designed to pass cold air, expelling the heat flows of the building from the first floor.

The second way to build foundations in permafrost conditions is thawing the soil under the foundation and deepening it into the layer of permafrost soil, also with air vents.

In an effort to reduce the heat generation of the building itself, sometimes refrigeration units are placed in technical undergrounds.

The existing third construction method prepares the building for uneven settlement by strengthening its rigidity and creating expansion joints, since the thawing process can last for tens of years, forming a thawing bowl.

Considering patent No. 2583025 dated April 7, 2016 as an analogue, it was established that artificial cooling of the base soils, the assembly of foundations from separate modules of full factory readiness on a backfill from coarse skeletal soil, not subject to deformation during freezing - thawing.

The difference between the proposed utility model is:

- a supporting honeycomb structure installed in the active layer;

- no need for forced cooling of frozen soil during thawing;

- high strength characteristics of the structure during thawing of permafrost soils;

- the presence of hydro and thermal insulation inside the foundation slab, limiting defrosting.

The technical result of the proposed utility model

Arrangement of the supporting structure of the foundation slab in regions with subsidence and frozen soil, ensuring its watertightness and thermal protection, due to the construction of joints and a layer of polystyrene concrete at the base.

The task of the technical result when using:

Construction of civil buildings in regions of Russia with frozen and subsiding soils using the proposed foundation slab with the following properties:

- bearing capacity of the structure during thawing of frozen soil or subsidence;

- water tightness due to the tight connection of corrugated walls;

- preservation of frozen soil from thawing due to thermal insulation and air vents.

Characteristics of the utility model.

The proposed foundation slab device for regions with frozen and subsiding soils consists of:

- honeycomb structure made of pieces of galvanized profiled sheet, connected in corrugations through gaskets of fiberglass strips impregnated with epoxy resin;

- bottom support monolithic reinforced concrete base;

- the upper load-bearing monolithic reinforced concrete floor on galvanized profiled sheets, providing a ventilation system;

- supporting steel channels in the base and floor;

- waterproofing and thermal protection of frozen ground with a layer of polystyrene concrete.

The load-bearing capacity of the honeycomb structure and monolithic reinforced concrete floors and foundations is determined by calculation and ensures the stability of the structure during thawing of frozen soil or subsidence.

Implementation of the utility model

The proposed utility model is intended for the construction of buildings in regions with frozen and subsiding soils.

Blueprints:

Figure 1 - shows a section of a building under construction installed on the proposed structure

Pos. 1 - permafrost soils,

Pos. 2 - active layer,

Pos. 3 - vegetative layer,

Pos. 4 - foundation honeycomb plate,

Pos. 5 - bottom reinforced concrete base plate,

Pos. 6 - bearing profiled sheet of floor,

Pos. 7 - top reinforced concrete base plate,

Pos. 8 - building under construction.

Figure 2 shows a fragment of a honeycomb plate consisting of vertical sections of a profiled sheet pos. 9, bent at an angle of 90 ° by 1/3 of the length and combined into blocks by joining in corrugations with a connection through tape gaskets made of fiberglass pos. 10 impregnated with epoxy resin.

Figure 3 - shows a section of a fragment of a foundation slab, indicating:

- supporting steel channels, pos. eleven,

- upper support channels, pos. 12,

- waterproofing and thermal protection made of polystyrene concrete, pos. 13,

- profiled floor sheet, pos. 6,

- blown channels, pos. fourteen.

Figure 4 shows schematically the joining of segments of bent profiled sheets.

Claims (1)

Installation of a foundation slab of honeycomb structures consisting of galvanized profiled sheets, connected in corrugations by gaskets of fiberglass strips impregnated with epoxy resin, monolithic reinforced concrete foundations and floors with natural ventilation in regions with permafrost and subsiding soils.

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