RU55388U1 - SPATIAL REINFORCED CONCRETE FOUNDATION PLATFORM FOR SMALL-STOREY BUILDINGS FOR CONSTRUCTION IN SPECIAL GROUND CONDITIONS AND SEISMICITY IN ASSEMBLY AND MONOLITHIC OPTIONS - Google Patents

Abstract

Spatial reinforced concrete foundation platform for low-rise buildings for construction in special soil conditions and seismicity in prefabricated and monolithic versions The utility model relates to the construction of low-rise buildings, namely, the construction of spatial foundation platforms on weak, subsiding, heaving soils and in seismic areas. The utility model problem is solved as follows. Spatial reinforced concrete foundation platform for low-rise buildings for construction in special soil conditions and seismicity in prefabricated and monolithic versions, including the upper and lower slabs joined together by means of beams, the lower slab is installed without burial on the outer surface of the soil with a sliding layer, which is a prefabricated version connecting beams in the form of a cross system of ribs are monolithically connected to the lower plate and have key projections with valve outlets, and in the upper plate the corresponding holes into which these key protrusions enter are filled, the space between the ribs is filled with insulation, the embedded parts between the individual prefabricated plates are welded, the key joints and seams between the plates are monolithic, and in the monolithic version, the plate is concreted on a level base with releases of reinforcement for the ribs between which are installed molded blocks of insulation, protected from moisture inside the blocks, the side faces of which form the basis of the formwork for concrete ribs, and The upper surface of these blocks is the base of the formwork for installation from the top plate with reinforcement and subsequent concreting of the ribs and top plate. 2 p. F. and., 2 FIG.

Description

The utility model relates to the construction of low-rise buildings, namely, to the construction of spatial foundation platforms on weak, subsidence, heaving soils and in seismic areas.

Known constructions of prefabricated spatial reinforced concrete foundation platforms for the construction of a multi-storey building in special soil conditions and seismicity.

Known spatial base platform, adopted as a prototype, containing thin reinforced concrete foundation slabs of solid cross section, located on the base, in which a monolithic spatial foundation platform is made of two thin reinforced concrete foundation slabs, located one above the other, while thin slabs are monolithically bonded together by cross reinforced concrete beams, the space between which is filled with a heater, for example, expanded clay, in addition, between a monolithic a strange base plate and base is a sliding layer of materials with a low value of the coefficient of friction (see patent for utility model No. 45410, publ. BI, October 13, 2005).

With regard to buildings of low buildings, this constructive solution has the following disadvantages:

- the number of prefabricated structural elements is large (three) and their number is desirable to reduce;

- connecting beams should be quite small in height and their manufacture, transportation and installation are difficult and not very effective.

The loads from low-rise buildings are much less than from high-rise buildings and the structural solutions of such foundation platforms can be improved, both in terms of manufacturing and production work at the construction site.

The objective of the utility model is to eliminate these shortcomings by reducing structural elements, increasing efficiency in the manufacture and installation.

The utility model problem is solved as follows. Spatial reinforced concrete foundation platform for low-rise buildings for construction in special soil conditions and seismicity in prefabricated and monolithic versions, including the upper and lower slabs interconnected by beams, the lower slab is installed without burial on the outer surface of the soil with a sliding layer, which

in the prefabricated version, the connecting beams in the form of a cross system of ribs are monolithically connected to the bottom plate and have key protrusions with valve outlets, and corresponding holes are provided in the top plate into which these key protrusions enter, the space between the ribs is filled with insulation,

embedded parts between individual prefabricated plates are welded, keyed joints and seams between the plates are monolithic,

and in a monolithic version, a slab concreted on a flattened base, having reinforcement outlets for ribs, between which molded insulation blocks are installed, protected from moisture ingress into the blocks, the lateral faces of which form the base of the formwork for concreting the ribs, and the upper surface of these blocks is the base of the formwork for installation from the top plate with reinforcement and subsequent concreting of the ribs and the top plate.

The device is illustrated by drawings, where:

Figure 1 - implementation of a spatial reinforced concrete foundation platform for low-rise buildings in a prefabricated version;

Figure 2 - implementation of spatial reinforced concrete foundation platform for low-rise buildings in a monolithic version

Spatial reinforced concrete foundation platform 1 for low-rise buildings for construction in special soil conditions and seismicity (see figure 1), includes upper 2 and lower 3 slabs, interconnected by connecting beams in the form of a cross system of ribs 4.

In the prefabricated version, the connecting cross-system of ribs 4 is integral with the lower plate 3 and has key protrusions with the outlets of the reinforcement 5. In the upper plate 2 there are corresponding openings 6, which include the key protrusions. The space between the connecting beams 4 is filled with insulation 7. The embedded parts between the individual prefabricated plates are welded, the key connections 5 and the seams between the upper 2 and lower 3 plates are monolithic. The bottom plate 3 is installed without deepening on the outer surface of the soil with a sliding layer 8.

In a monolithic version, the concreted bottom plate 3 with reinforcement outlets for the cross system of ribs 4, into the space between which the formed insulation 7 is placed. The insulation 7 is protected from moisture entering the cross system of ribs 4. Side

the faces of the insulation blocks 7 serve as a formwork for concreting ribs. The reinforcement of the upper plate 2 is installed on the upper surface of the insulation blocks 7, after which the ribs 4 and the upper plate 2 are concreted.

Mounted spatial reinforced concrete foundation platform 1 for low-rise buildings for construction in special soil conditions and seismicity as follows:

In the prefabricated version. On a leveled base with a sliding layer 9, a lower plate 3 is installed with beams 4 monolithically connected, which have key projections with reinforcement outlets 5 that enter the corresponding holes 6 of the upper plate 2. The space between the connecting beams 4 is filled with insulation 7. Embedded parts 8 between the individual they are welded with prefabricated plates, key joints 5 and seams between the upper 2 and lower 3 plates are monolithic.

In a monolithic version.

On a leveled base with a sliding layer 8, the lower plate 3 is installed with the outlets of the reinforcement for the cross system of ribs 4. Then the blocks of the insulation 7 are laid, which are protected from moisture inside. The reinforcement of the upper plate 2 is laid on the upper surface of the insulation blocks 7. The lateral ribs of the insulation 7 serve for concreting the ribs as formwork. Then the ribs and the upper plate 2 are concreted.

The proposed constructive solution is characterized by:

- increased industry;

- reduced labor costs by reducing the number of prefabricated elements in the prefabricated version, and in the monolithic version in an almost formless way of work;

- reduction of heat loss through the foundation platform;

- simplified work with virtually no excavation and the use of heavy equipment;

- preservation of the natural and naturally formed properties of soils, including the use of the bearing properties of weak soils, in which the existing hydrogeological regime of groundwater is not violated. In general, environmental conditions are maximally preserved;

- buildings on a spatial foundation platform have a high architectural expressiveness, elevating it on a pedestal in the form of a platform;

- the insulated spatial platform is at the same time the supporting structure of the floor.

This platform is effectively applicable in areas of cramped urban construction in various "inconvenient" areas, where traditional construction of foundations is not rational or impossible, as well as in suburban areas where it is necessary to preserve a forest zone (planting), near rivers in flooded areas.

This platform is slightly sensitive to uneven precipitation (subsidence) of weak soils and allows the use of areas with very weak soils (water-saturated, heaving, subsidence).

The use of a sliding layer between the base and the spatial slab allows the construction in seismic areas on soft soils, ensuring the reliability of the upper structure. Technological openings can be provided in the platforms for entering underground (external) communications, pa also for communication with basement or structurally autonomous structures.

Claims (2)

1. Spatial reinforced concrete foundation platform for low-rise buildings for construction in special soil conditions and seismicity in prefabricated and monolithic versions, including the upper and lower slabs joined together by means of beams, the lower slab is installed without burial on the outer surface of the soil with a sliding layer, characterized in that in the prefabricated version, the connecting beams in the form of a cross system of ribs are seamlessly attached to the bottom plate and have key protrusions with valve outlets, and in the upper Lyta provided corresponding holes into which these protrusions are spline, the space between the ribs is filled with insulation, inserts between the individual precast slabs are welded, keyed connections and joints between the slabs zamonolichivayutsya. 2. The spatial reinforced concrete foundation platform for low-rise buildings for construction in special soil conditions and seismicity in the prefabricated and monolithic versions according to claim 1, characterized in that in the monolithic version, on a flat base on a lower concreted smooth slab having releases of reinforcement for the ribs, are installed molded blocks of insulation, protected from moisture inside the blocks, while the side faces of these blocks serve as formwork for concrete ribs, and the upper surface of these blocks is innovation for the installation of reinforcement of the upper plate and concreting of ribs together with the upper plate.