RU48338U1 - EXTERIOR HANGED WALL OF A FRAMEED MULTI-STOREY BUILDING - Google Patents

Abstract

The utility model relates to construction and can be used in frame buildings of various storeys and purposes without floor cuts of the outer layer of the wall and the insulation layer being erected in different areas. The essence of the proposed design is as follows. In contrast to the well-known analogue - a three-layer wall, based on floor to floor ceilings, the proposed external curtain wall of a multi-storey building frame is made without floor cutting of the outer layer of the wall and the insulation layer, while the outer facing layer rests on each floor on the upper and lower horizontal belts of the steel truss , which is fixed by the two ends of the upper belt on the cantilever tables of the outer columns: at least at the upper surface of the reinforced concrete multi-hollow floor slab, and neither Nij belt farm as two ends fixed to the cantilever abutments on the columns and is barred for the outer layer wall, at least two window openings and an inner layer of the wall is supported on a reinforced concrete hollow-core slab and a window opening above each reinforced concrete installed jumper. The height of the steel truss is calculated and accepted as a multiple of the number of spoon rows of bricks laid between the upper and lower trusses of the truss on the outer facing layer of the wall. The upper and lower belts of the steel truss are fixed on two columns with the possibility of compensating for the horizontal movement of their ends along the axis of the truss at ambient temperature differences.

Literature:

1. "Norms for the design and construction of heat-efficient exterior walls of residential and public buildings from lightweight expanded clay concrete blocks - 2000", developed by the Central Research and Design Institute of Residential and Public Buildings (TsNII EP dwellings) and approved by the Moskomarchitecture dated November 29, 2000 No. 52, 41 s, from 8-11.

Description

The utility model relates to construction and can be used in frame buildings of various storeys and purposes without floor cuts of the outer layer of the wall and the insulation layer being erected in different areas.

Known external three-layer wall, made in accordance with the requirements of the policy document "Norms for the design and construction of heat-efficient exterior walls of residential and public buildings from lightweight expanded clay concrete blocks - 2000", which were developed by the Central Research and Design Institute of Residential and Public Buildings (TsNII EP dwellings ) and approved by the order of the Moscow City Architecture Committee dated November 29, 2000 No. 52, 41 s, from 8-11, photocopies of the title page and pages 8-11 are attached on 5 sheets to the application materials (1).

In accordance with this document, non-load-bearing exterior walls are phased in based on ceilings, as a rule, on monolithic ceilings made between the columns. These external walls are made of a layered structure with an inner layer of lightweight expanded clay concrete blocks SKTS (wall stone (block) on cement laying), a middle layer of effective insulation and an external finishing layer.

The inner layer of RCC blocks is provided for 190 mm thick (one spoon row). The inner surface of the masonry is plastered. The walls of the SKZ blocks allow you to place hidden electrical wiring in the slabs arranged on the building before the completion of the internal finishing layer.

The outer layer can be performed in three versions: from facing brick, plaster, with a ventilated screen. Brick cladding is made of facing brick with a layer thickness of 120 mm with a masonry density of 1600 kg / m ³ . The cladding is attached to the masonry of SKZ blocks with corrosion-resistant flexible metal bonds f4 mm,

installed through 600 mm in height (3 rows of blocks) with a pitch of 800-1000 mm, monolithic in horizontal joints of cladding and masonry. The bonds are anchored with nets of corrosion-resistant wire f 4 mm.

When facing the building’s facade with brick, polystyrene foam with a specific gravity of 40 kg / m ^{3 and a} thickness of 190 mm with cuts made of mineral wool with a specific weight of 80 kg / m ³ at the level of ceilings, under the window opening and above it is used as a heater.

However, this external three-layer wall has several disadvantages, namely:

- for floor-by-wall support of walls, it is necessary to perform monolithic sections of floor slabs with thermal liners around the perimeter of the building, for which it is necessary to expend a significant amount of reinforcement, concrete, formwork materials and labor, and in winter a large amount of electricity to heat monolithic sections;

- through the monolithic sections of the ceilings, significant heat loss occurs from the building, forming the so-called "cold bridges".

The aim in the development of the proposed utility model is to create a building envelope of a heat-efficient external curtain wall of a multi-storey frame building without floor cutting into monolithic sections with thermal liners or floor slabs.

The specified goal and technical result are implemented as follows.

In contrast to the well-known analogue - a three-layer wall, based on floor-to-floor overlapping, the proposed external wall of the multi-stage frame building is made without floor-cut of the outer wall layer and the insulation layer. The outer facing layer rests on each floor on the upper and lower horizontal belts of the steel truss, which is fixed by the two ends of the upper belt on the cantilever tables of the outer columns at least at the upper surface of the reinforced concrete multi-hollow floor slab, and the lower truss belt is also fixed by two ends on cantilever emphasis of the outer columns and is a jumper for the outer facing layer of the wall, at least for two window openings. The inner layer of the wall rests on a multi-hollow reinforced concrete slab and a reinforced concrete lintel is installed above each window opening.

The height of the steel truss is calculated and accepted as a multiple of the number of spoon rows of bricks laid between the upper and lower trusses of the truss on the outer facing layer of the wall.

The upper and lower belts of the steel truss are fixed on two columns with the possibility of compensating for the horizontal movement of their ends along the axis of the truss at ambient temperature differences.

As the closest analogue of the proposed design of the external curtain wall, you can take the design of the external wall according to the source of scientific and technical information (1).

The list of figures in the drawings.

Figure 1 shows the design of the proposed external curtain wall frame multi-storey building, view from the facade of two floors with a partial cutaway.

In Fig.2 shows a section of the wall along aa of Fig.1.

In Fig.3 shows a section of the wall along BB of Fig.1.

Figure 4 shows a section of the wall along BB-1 in places of attachment of the steel truss on the columns.

Figure 5 shows a view according to G of figure 4 on the attachment point of the ends of the upper and lower zones of the steel truss on the column, M 1:10.

Figure 6 shows a steel farm, front view of the facade of the building, M 1:15.

In Fig.7 shows a section along EE of Fig.6 steel truss, M 1:10.

The proposed external curtain wall frame multistory building contains the following structural units, products and details.

On reinforced concrete columns 1, a metal steel truss 2 is fixed (Fig. 1). On the farm 2, the outer facing layer 3 of the wall (FIGS. 1 and 2) is installed, half the length of the brick (120 mm). The brick is laid on the upper and lower zones of the farm 2.

On reinforced concrete multi-hollow floor slabs 4 (figure 2), laid on the crossbars of the building frame, the inner layer 5 of the wall is installed. The outer facing layer 3 and the inner layer 5 of the wall are reinforced with flexible connections in accordance with the current Construction Norms and Regulations. Between the outer facing layer 3 and the inner layer 5 of the wall an effective insulation 6 is laid, which partially relies on the floor slab 4, and partially relies on the steel truss 2.

In the warm season, they use an insulating insulation for this wall, and in winter, for example, styrofoam foam blocks with a thickness taken to be calculated or mineral wool boards and other types of insulation can be used.

The layer thickness δ (figure 2) of the insulation 6 is taken as calculated and can be from 150 to 200 mm or more, depending on

climatic zone of the erection of the building.

The thickness of the inner layer 5 of the wall is also taken depending on the width of the lightweight wall blocks or bricks.

The height of the metal truss 2 for a particular building with a size from the bottom of the multi-hollow slab 4 of the lower floor to the bottom of the slab 4 of the upper floor is 3000 mm, taken as a multiple of the number of spoon rows of bricks and is approximately 685 mm (Figs. 3 and 4). Between the upper and lower zones of the farm, a multiple number of spoon rows of bricks are laid on its lower horizontal shelf, and the lower belt of the farm is at the same time a jumper, for example, for two window openings of the outer facing layer 3 of the wall (Figs. 1 and 3). And for the inner layer 5 of the wall above each window opening, a reinforced concrete bridge 7 is installed, and window block 8 is installed in the window opening (Fig. 3).

The metal truss 2 is mounted on cantilever tables (external) 9 on reinforced concrete columns 1 with the ends of the upper belt 2a and the ends of the lower belt 26 with the possibility of compensating for the horizontal movement of its ends at the fastening points along the axis of the truss with differences in ambient temperature (Figs. 4 and 5).

And this is implemented as follows. The ends of the upper girdle 2a of the truss are reinforced with a steel angle profile 2b of size 50 × 50 × 5 mm and a length of 100 mm and stiffeners 2 g of steel sheet 6 mm thick welded to the end of the upper girdle made of steel angle profile 63 × 63 × 5 mm.

Each end of the upper belt of the farm 2 rests on a cantilever table 9, welded to the embedded part on the column 1 (Figs. 4 and 5) and mounted on the table 9 by means of a bolt.

The lower belt of the truss 2b, made of a steel corner profile with a size of 125 × 125 × 8 mm, is fastened by means of a bolt 10 to two cantilever stops 11 made of a steel T-section and welded with its edge to the embedded part on the column 1. Between the end of the lower belt 2b and the supporting surface of the stop 11 is installed asbestos gasket 12 with a size of 130 × 130 mm and a thickness of 10 mm (figure 4).

The metal truss 2 is made of a welded structure with a length applicable to a particular building and a height of approximately 685 mm (Fig.6 and 7). A steel corner profile with a section of 63 × 63 × 5 mm was used for the upper belt of the farm. A steel corner profile with a section of 125 × 125 × 8 mm was used for the lower belt of the farm. As vertical connecting racks 2d corner profiles with a section are used

32 × 32 × 4 mm, and reinforcing steel bars with a diameter of 16 mm were used as braces 2e.

The proposed external curtain wall frame multistory building is constructed as follows.

At the floor level of the first floor of the building, the outer facing layer 3 of the wall of the facing brick half the length of the brick is laid out on the foundation of the first floor up to the level of the upper surface of the window opening. At the same time, at a distance equal to the estimated thickness of the insulation layer 6 on the multi-hollow reinforced concrete slab 4 (FIGS. 2 and 3), lay the inner wall layer 5 with a height also up to the level of the upper surface of the window opening. The outer and inner layers of the wall are fastened with flexible ties.

Then the space between the outer and inner layers of the wall is filled with insulation 6. After that, on two adjacent columns 1 on two cantilever tables 9 and two cantilever stops 11, a metal truss 2 is fixed. Moreover, the upper horizontal surface of the upper girdle 2a of the truss is fixed at the top of the multi-hollow reinforced concrete floor slabs 4. The lower girdle 2b of the truss at the same time, acts as a bridge over two window openings for the outer facing layer 3 of the wall.

At the same time, a reinforced concrete bridge 7 is installed on the inner layer 5 of the wall above each window opening. Next, the laying of the outer layer 3 of the wall is continued on the horizontal surface of the lower shelf of the lower belt 2b of the farm 2 and, for example, 10 spoon rows of brick are placed between the lower and upper girders of the farm.

Next, the masonry of the outer facing layer 3 of the wall continues to be laid on the upper horizontal surface of the upper girdle 2a of the farm to the height of the bottom of the window opening of the next floor, and in the piers between the window openings to the lower surface of the upper farm. At the same time they are laying and the inner layer 5 of the wall.

After that, already on the next floor of the building I fix the farm 2 on columns 1 and thus continue laying the walls on all floors of the building.

The proposed external curtain wall of a multi-storey frame building in comparison with the well-known recommended analogue for use has the following significant advantages, namely:

- the wall structure is made without floor cuts of the outer facing layer of the wall and the insulation layer;

- eliminates the implementation of monolithic belts with thermal liners around the perimeter of the building for floor-based support of the walls, which significantly reduces the amount of reinforcement, concrete, formwork materials and labor costs used, and in winter a large amount of electricity to heat monolithic belts (sections);

- the outer facing brick layer of the wall is mounted on a metal truss fixed on two adjacent reinforced concrete columns, and the metal truss simultaneously serves as a bridge over, for example, two window openings for the outer layer of the wall;

- “cold bridges”, through which significant heat loss from the building occurs, are most excluded.

Literature:

1. "Norms for the design and construction of heat-efficient exterior walls of residential and public buildings from lightweight expanded clay concrete blocks - 2000", developed by the Central Research and Design Institute of Residential and Public Buildings (TsNII EP dwellings) and approved by the Moskomarchitecture dated November 29, 2000 No. 52, 41 s, from 8-11.

Claims (3)

1. The outer curtain wall of the frame multi-story building, including the outer and inner layers resting on the floor, overlapping insulation and connecting connections, characterized in that the wall is made without floor cutting of the outer layer and the insulation layer, while the outer facing layer rests on each floor on the upper and lower horizontal belts of the steel truss, which is fixed by the two ends of the upper belt on the cantilever tables of the external reinforced concrete columns at least at the upper the surface of the reinforced concrete multi-hollow floor slab, and the lower truss belt is also fixed at the cantilever supports of the columns with two ends and is a jumper for the outer facing layer of the wall for at least two window openings, and the inner layer of the wall rests on the reinforced concrete multi-hollow floor slab and above each reinforced concrete lintel installed in the window opening. 2. The wall according to claim 1, characterized in that the height of the steel truss is calculated and accepted as a multiple of the number of spoon rows of bricks laid between the upper and lower truss belts on the outer facing layer of the wall. 3. The wall according to claim 1, characterized in that the ends of the upper and lower zones of the steel truss are mounted on two columns with the ability to compensate for the horizontal movement of their ends along the axis of the truss at ambient temperature differences.