RU78839U1 - FRONT BRICK FACING OF BUILDINGS - Google Patents

Abstract

1. Facade brick cladding of buildings with load-bearing floor slabs made of monolithic reinforced concrete, with thermal liners between the reinforced concrete dowels at the ends, and external walls made of structural and heat-insulating blocks made of polystyrene concrete or cellular concrete, characterized in that at the ends of the reinforced concrete floor slab there is no less masonry two horizontal rows of shaped face bricks, in the cavity of which the ends of the reinforcing frame of the floor slab enter, having paired horizontal rods, welded or tightly fixed with a knitting wire perpendicular to each other, of which the main part of the rods is perpendicular to the surface of the end face and passes through the dowels, and the other part of the rods is parallel to the end face and placed entirely inside the horizontal row of shaped face bricks. 2. Facade brick cladding of buildings according to claim 1, characterized in that the steel rods of the reinforcing cage entering the cavity of the shaped brick have a diameter of 8-10 mm and are made of steel grade A-III, or A500C, or B500C.

Description

The utility model relates to the field of construction and can be used for buildings with floor slabs made of monolithic reinforced concrete for facade cladding of walls made of light structural and heat-insulating polystyrene concrete or cellular concrete.

The following technical solutions are known for building facades with floor slabs made of monolithic reinforced concrete [1, 2]:

- facade brick cladding of buildings from the front, including hollow brick, which in the piers and window sills of the facade rests on a steel plate or steel corner, welded to embedded parts of the ceiling;

- the end part of the reinforced concrete floor goes onto the facade in the form of a continuous horizontal strip, the surface of which can be painted over. In this case, the brickwork relies on the overlapping of the full surface of the brick;

- the end part of the reinforced concrete floor is closed with glued tiles, for example, from sawn front bricks, and the brickwork rests on the floor with an incomplete brick surface. The disadvantages of such technical solutions are:

- reduction of heat-shielding properties of the wall due to the presence of steel plates or corners and embedded parts with very high thermal conductivity;

- deterioration of the structural reliability of the belt due to possible corrosion of the steel plate or corner, as a result of which the bearing capacity of the cladding and the durability of the facade can be reduced;

- deterioration of the decorative and aesthetic appearance of the facade due to the unpainted gray continuous horizontal stripes;

- the possibility of efflorescence from corrosion of steel elements, peeling of paint and spalling of glued plates;

- with incomplete support of masonry on a steel corner (plate) or reinforced concrete floor, high accuracy of the masonry and careful monitoring of its implementation are necessary;

- increase in value due to the use of expensive steel elements (plates, corners and embedded parts).

The technical task of the utility model is to provide high operational, physico-mechanical, heat-shielding and decorative aesthetic

the properties of the facade of buildings and the reduction in the cost of constructed buildings

This is achieved by the fact that at the ends of the reinforced concrete floor slab there is a masonry on the mortar of at least two rows of shaped face bricks [3], in the cavity of which the end part of the reinforcing cage of the floor slab, consisting of paired rods passing through the dowels, is welded or rigidly fixed with a knitting wire perpendicular to their ends, paired reinforcing bars placed entirely inside the horizontal row of shaped face bricks, thus forming a single, durable and strong bearing the structure on which the masonry of ordinary (non-shaped) front brick is supported in the walls and in the window sills of the facade.

In this case, the reinforcing cage has rods made of steel of grade A-III, or A 500C, or B 500 with a diameter of 8-10 mm [4, 5], which enter the cavity of shaped bricks.

Figure 1 shows a facade cladding of ordinary front 1 and shaped front brick 2 in mortar 3 for buildings having reinforced concrete monolithic floors 4 with thermal inserts 5 between reinforced concrete dowels 6 with reinforcing cage 7 made of steel rods, and walls made of structural and heat-insulating polystyrene concrete or aerated concrete blocks 8.

The implementation of the utility model is achieved by the fact that in the temporary (removable) formwork before concreting the floor slab 4 at its end, at least 3 horizontal rows of shaped face brick 2 are laid on the mortar 3, then the reinforcing frame 7, consisting of paired, is installed in the design position steel rods passing through the dowels 6, to the ends of which paired rods are perpendicularly welded or rigidly tied; the frame is started in the cavity of the shaped face brick 2, filled with a monolithic concrete mixture, the entire free space of the formwork form of the floor slab 4 and the voids of the shaped face brick 2, then, after hardening and curing, the mortar fastens the shaped bricks, they masonry from ordinary (non-shaped) face brick 1 in piers and window sills, resting it on a horizontal masonry belt of shaped face brick 2 at the ends of the floor slab 4.

The implementation of the proposed utility model improves physical and mechanical strength, structural reliability, heat-shielding properties and improves the decorative and architectural expressiveness of the facade brick cladding of buildings.

Comparative characteristics of the quality parameters of the proposed facade cladding with known analogues are given in the table.

Table №№pp Parameter Name One meas. Parameter value Known Solution Proposed solution one
2
3
four Reliability and durability Heat-shielding properties Decorative and architectural expressiveness Cost %
%
Visually
% one hundred
one hundred
Standard
one hundred 115-120
105-107
High
85-90

As can be seen from the data presented, the implementation of the proposed technical solution leads to an increase in the values of all quality parameters by 5-20% compared with the known technical solutions, as well as a decrease in cost by 10-15%.

Used Books:

1. Norms for the design and construction of buildings of the Unicon system using polystyrene concrete products. Moskomarchitecture, 1999 (sheets 67.68).

2. Norms of typical parts and assemblies of polystyrene concrete enclosing structures of heat-efficient buildings of the Unicon system for construction in the Moscow region. Minmosoblstroy, 2001 (sheets 25, 25a, 41).

3. TU 5741-028-05073771-02. The brick is ceramic front shaped.

4. GOST 5781-82. Hot-rolled steel for reinforcing reinforced concrete structures. Technical conditions

5. GOST R 52544-2006. Welded reinforcing steel bars of a periodic profile of classes A500C and B500C for reinforcing reinforced concrete structures. Technical conditions

Claims (2)

1. Facade brick cladding of buildings with load-bearing floor slabs made of monolithic reinforced concrete, with thermal liners between the reinforced concrete dowels at the ends, and external walls made of structural and heat-insulating blocks made of polystyrene concrete or cellular concrete, characterized in that at the ends of the reinforced concrete floor slab there is no less masonry two horizontal rows of shaped face bricks, in the cavity of which the ends of the reinforcing frame of the floor slab enter, having paired horizontal rods, welded or tightly fixed with a knitting wire perpendicular to each other, of which the main part of the rods is perpendicular to the surface of the end face and passes through the keys, and the other part of the rods is parallel to the end face and placed entirely inside the horizontal row of shaped face bricks. 2. Facade brick cladding of buildings according to claim 1, characterized in that the steel rods of the reinforcing cage, entering the cavity of the shaped brick, have a diameter of 8-10 mm and are made of steel grade A-III, or A500C, or B500C.