RU142251U1 - EXPLOSION-RESISTANT ATTACHED VENTILATED FACADE - Google Patents

Abstract

1. Explosion-proof ventilated facade of the building, including facade plates attached to vertical rails connected to the bearing brackets, which are made with the possibility of their fastening on the facade of a building or structure, characterized in that as facade panels use explosion-proof sandwich panels, in which the outer layers are made of a composite material - laminated plastic, and the intermediate layer is made in the form of a honeycomb aluminum filler with a honeycomb arrangement perpendicular to the plane of the pa eli.2. The explosion-proof curtain wall according to claim 1, characterized in that the explosion-proof sandwich panels are rigidly mounted to vertical rails. Explosion-proof hinged facade according to claim 2, characterized in that the rigid fastening of the sandwich panels to the vertical rails is made point with a distance between the attachment points of not more than 300 mm. 4. Explosion-proof hinged facade according to claim 1, characterized in that the supporting brackets contain a movable insert, a damping element and a stop. Explosion-proof hinged facade according to claim 4, characterized in that the damping elements of the bearing brackets are made elastic. Explosion-proof hinged facade according to claim 5, characterized in that the elastic damping elements of the bearing brackets are made in the form of a rubber insert or spring. Explosion-proof hinged facade according to claim 4, characterized in that the damping elements of the bearing brackets are made crushable. 8. Explosion-proof hinged facade 1-7, characterized in that for attached to the vertical guide sandwich panels further comprises a layer of dense porous

Description

The utility model relates to the field of protection of structures of buildings and structures from explosion and relates to the construction of an explosion-proof ventilated facade.

Terrorism is becoming an increasing threat. This requires appropriate action. The terrorist acts with an explosion can be divided into three types:

1. A suicide bomber’s explosion with a charge mass of up to 8 kg and a distance from the explosion site (3-15) m. An example is the terrorist attack at Domodedovo Airport in 2011, where 5 kg of TNT (TNT) were blown up and an explosion in the transition to the metro station Pushkinskaya in Moscow in 2000 (800 g TNT).

2. An automobile explosion in explosives with a charge mass of up to 200 kg and a distance from the place of explosion (30-50) m. This type of attack includes a terrorist attack near the market in Vladikavkaz in 2010 (40 kg TNT) or a terrorist attack on the market in Mineralnye Vody in 2001 (50 kg of TNT).

3. Undermining the entire building or its part with a charge mass of up to 1 t; the explosion occurs when explosives come in contact with the building or inside the building. The attacks of this type occurred in Moscow on the street. Guryanova and Kashirsky sh. in 1999, and also near the Chechen government building in 2002.

Obviously, protective facade systems can provide load reduction only in attacks of the first and second type, because in the third case, the load-bearing elements of the building are destroyed and its collapse.

Damaging factors in an explosion are:

- shock wave

- fragments of objects destroyed by the shock wave

- damaging elements embedded in the design of the explosive device (shrapnel).

Until relatively recently, it was believed: in order to withstand an external explosion, the structure of the building must be unusually strong. It turns out that this is not necessary. The new approach is based on the idea of using explosive energy for temporary storage, its absorption and dispersion of ventilated facades, which are a modern solution for the exterior decoration of building envelopes.

Known patent of the Russian Federation No. 110786 for the utility model "System for fastening the curtain wall" according to application No. 2011129018/03 with a priority of 07/13/2011, IPC EV04/00, published on 11/27/2011.

The utility model relates to the field of construction. The system of fastening the hinged facade can be used when installing on the external walls of buildings and contains a bracket with a supporting part, mounted on the facade with anchor fasteners, inserts, a vertical rail made in the form of mating blocks and bolted to the bracket, and the bracket is made in the form brands. The blocks of the vertical guide are provided with longitudinal grooves in which one ends of the inserts are mounted and fixed, and the other ends of the inserts are placed in the longitudinal grooves of the corresponding mating blocks of the vertical guide with the possibility of displacement along the grooves. The bracket is made with oval holes, and the surfaces of the supporting part of the bracket, interacting with the surface of the facade and the washers of the anchor fasteners, are corrugated. The blocks of the vertical guide are made in the form of a supporting profile and platforms for attaching the facing material with the possibility of replacing the platform depending on the type of facing material used and are provided with seamless rectangular elements made with the possibility of accommodating bolt heads freely movable in the longitudinal direction. The bracket, vertical guide blocks and inserts are made of aluminum alloy. The supporting part of the bracket is additionally equipped with a dielectric gasket to prevent electrochemical corrosion. The supporting part of the bracket, interacting with the surface of the facade, the surface of the bracket, interacting with the washers of the anchor fasteners and the washers of the anchor fasteners, are made corrugated. The side part of the bracket and the surface of the seamless element of the vertical guide block interacting with it are also provided with corrugations.

The Internet is known for the use of so-called sandwich panels for cladding facades of buildings (see, for example, the websites: www.panelgard.ru; www.remonthome.com; www.sendwich-paneli.okonka.ru; www.panel-spb. ru; www.panels.spravochnik.biz; www.new-dom.ucoz.ru;)

According to Wikipedia: (see http://ru.wikipedia.org/wiki/) a sandwich panel (English sandwich - a sandwich) is a building material that has a three-layer structure, consisting of two sheets of rigid material (metal, PVC, fiberboard , magnesite plate) and a layer of insulation between them. All layers of sandwich panels are glued together using hot or cold pressing. Depending on the purpose, roofing and wall panels are distinguished.

More detailed information about sandwich panels can be found, for example, on the website of BaltMarin OJSC (www.balt-marine.ru) or on the website: //www.dostkrov.ru/index.php/articles/77-sandvich:

The sandwich panel is a three-layer structure of two metal sheets and a layer of insulation located between them. Such panels with insulation are most often called sandwich panels or sandwiches, based on the design. Sandwich panels are unparalleled materials for the construction of prefabricated structures, often based on metal structures: modular buildings, warehouses, retail pavilions, construction hangars, car washes, etc. Typically, sandwich panels are made of galvanized steel sheets of class A galvanized steel. The cavity between the sheets is filled with a plate of basalt fiber with a density of at least 110 kg / m3. Insulation in sandwich panels, in addition to basalt fiber (mineral wool), can also be expanded polystyrene and polyurethane foam. An important characteristic is the coefficient of thermal conductivity of the insulation. The smaller it is, the warmer the panel. With a special adhesive based on polyurethane, the lining reliably and firmly connects to the insulation, guaranteeing the strength and long service life of the structure. They also make sandwich panels of element-wise assembly. The panels are attached to the frame, depending on its material, either using self-tapping bolts for metal or wood, or using special dowels (if the frame is concrete).

Also known from the Internet are the designs of subsystems for ventilated facades. So, for example, the KRASPAN system of ventilated facades is known, which is sold in Russia by Anfas LLC (website www.anfas.spb.ru). The Kraspan plant produces three types of supporting metal frames for installation and fastening of facade panels on them: from aluminum, galvanized and stainless steel. The main attachment points are universal for all subsystems. One of the main advantages of the Kraspan systems is an adjustable bracket, which allows not only to use a heater of different thicknesses, but also to compensate for irregularities in the bearing walls of buildings. Brackets for mounting ventilation systems are made by stamping from galvanized steel, have two stiffeners. The hole in the heel of the brackets is designed for the use of dowel bolts (anchors) d = 10 mm. The sliding bracket contains an extension pad that is attached to the bracket with two bolts. There are various ways of attaching facade slabs to the frame: with the help of clamps; clamping strips; rivets, screws; cassettes; "To the castle" on self-tapping screws; hidden clamps; holder strips.

Known application No. 20111114260 for the invention of the Russian Federation “Method of explosion protection of industrial buildings” with priority dated April 13, 2011, IPC Е04В 1/92, Е04Н 9/00, published October 20, 2012

The method of explosion protection of industrial buildings, which consists in installing explosion-proof and fire hazardous equipment in enclosing structures of a building in which explosive and fire hazardous equipment operates, characterized in that the explosive and fire hazardous equipment is installed on the building foundation, and in the side and upper fences of the industrial building explosion-proof elements, moreover, for side rails, explosion-proof elements are arranged in the form of safety collapsing structures building fencing, and for upper fencing - in the form of explosion-proof plates on the roof or attic of the building with explosive objects inside it.

At the same time explosion-proof elements may made in the form of an explosion-proof plate containing a metal armored frame with metal armored casing and lead filler, which has four fixed support pipes at the ends, and four support rods that are telescopically inserted into the fixed pipe support pipes of the panel, this filler is made in the form of a dispersed air-lead system, and the lead is made in the form of crumbs, and the support rods are made elastic.

Known RF patent No. 2331447 for the invention “Fire and explosion protection system for structures of buildings and structures” according to application No. 2006137145/12 with a priority of 10/20/2006, IPC А62С 2/06, ЕВВ 1/94, published on 08/20/2008.

The system consists of a metal layer of the outer cladding having damping properties attached to the protected object by means of a flexible frame, and from an intumescent coating layer deposited on the surface of the protected object in such a way that an air gap forms between the said outer cladding layer and the intumescent coating layer. The dimensions of the interlayer are selected from the condition of complete straightening of the outer cladding layer deformed in case of explosive action by a coating expanded under the action of heat flux during fire exposure. The metal layer of the outer lining m. made of plastic steel. The technical result consists in the comprehensive protection of objects from explosion, as well as their protection against high temperatures due to the use of a structure capable of restoring its shape after impact or explosion when activating fire protection mechanisms.

Known RF patent No. 2490590 for the invention "Means of protecting an object from explosive effects" according to application No. 20111138737 with priority of 09/22/2011, IPC F42D 5/05, F41H 5/04, B32B 3/30, published on 03/27/2013.

The tool is a three-layer metal panel consisting of an outer carrier sheet welded together, facing the impact side, an inner carrier sheet (from the side of the protected object) and a corrugated middle layer located between them. Between the inner sheet and the peaks of the corrugated middle layer, a weakened joint is made by means of a spot weld, in which the tensile strength of the said layers is lower than the strength of the said supporting sheet. The specified tool is used as the outer walls of the protected premises.

The disadvantage of this tool (except for the high cost) is that it is extremely difficult to use to increase the explosion resistance of existing buildings and structures due to its large mass (the method of attaching to the outer walls of buildings is significantly complicated). Another disadvantage of this tool is that in the wall, which will be in contact with the steel panel, a “back break” can occur. in the event of an explosive overhead charge explosion on a flat reinforced concrete or brick surface, a funnel is formed not only on the side of the charge location, but also on the opposite side, and at the same time fragments fly apart that can hit people inside the building.

Known RF patent No. 2108434 for the invention "Multilayer explosion-proof panel (options) and a method of protecting the structure from the impact of explosive substances" according to the application No. 94021352/03 with a priority of 10.23.1992, IPC Е04Н 9/00, Е04В 1/92, published on April 10, 1998

A highly effective multilayer explosion-proof panel consists of many sheets of stretched metal mesh separated by an inner layer of porous breathable material. As the latter, you can use fiberglass, cotton technical felt or many balls made of stretched metal mesh. A method of protecting a structure from the action of an explosive consists in installing said multilayer explosion-proof panel on a wall or other structural element, which successfully dissipates shock waves and the thermal effect of a close bomb explosion.

The disadvantage is that the thermal dispersion of the shock wave on the elements of the mesh panels is inefficient, because It is comparable with thermal dissipation in air, and therefore a light mesh structure is not able to reduce and distribute the impulse of an air shock wave to the supporting structures of a building or structure, i.e. not able to prevent the destruction of light (non-load-bearing) building envelopes.

Known US patent No. US 3969563 (A) for the invention of "Protective wall structure", IPC B32B 3/28, B64C 1/00, B64D 37/32, E04C 2/08, E04C 2/34, F41H 5/04, published 13.07 .1976 g.

The wall structure is characterized by an inner and outer wall coating and at least one inner protective layer located between them, defined as either a ribbed formation (composition), or as a formation with recesses (spaces) placed between wall coatings, the above spaces represent a protective tool the formation of a wall structure that is highly resistant to fragmentation (fragments) or similar serious damage. The ribbed material formation is selected from the group of stainless steels, special nickel steels, alloy steels and titanium alloys and has a yield strength of at least about 200 thousand pounds per square meter. inch. The protective environment may include fire resistant material.

Known Chinese patent No.CN 201746978 (U) for the invention "Steel plate wrapped around a composite protective column", IPC E04B 1/92, E04C 3/34, published 02.16.2011

The utility model comprises a steel plate wrapped around a composite protective column. A hollow long steel sleeve is provided with an additional steel plate and a protective steel plate, which are sequentially mounted and welded to the outer surface of the protective column from the inside out ("sleeve" type), a second metal connecting plate with a radial anchor plate and a second ring steel plate are welded at the periphery of the lower part additional steel plate, and the first metal connecting plate and the first annular steel plate are sequentially welded to the outer surface awnings of the upper part of the hollow long steel sleeve from top to bottom. To protect the outer surface of a reinforced (reinforced) concrete column, steel plates are used to increase resistance to shock loads. Since metal plates are used to connect the connecting parts of the column and the concrete floor beam, to reduce damage to the nodes when receiving shock loads, it can be used that the metal connecting plate with a radial anchor plate at the bottom of the column is welded to the upper layer of the steel reinforcement of the base, thereby increasing the impact resistance specific columns.

The invention is known "Facade mounted ventilated fencing of buildings" according to the patent of the Russian Federation No. 2446258, application No. 20100127222/03 with priority dated 07/05/2010, IPC E04F 13/08, published 03/27/2012 (prototype).

The invention relates to the field of industrial and civil engineering, in particular to structures of hinged cladding of buildings. Facade hinged ventilated building fencing includes facade slabs, thermo-waterproofing protection and load-bearing fence elements, passed through the thermo-waterproofing protection without a gap and made in the form of anchor rods arranged in vertical rows. Anchor rods are screwed through the dowels into the wall of the building and have fixing elements at their free ends that enable the installation and fastening of slabs. In order to increase the reliability of fastening of facade slabs, the possibility of facing high-rise buildings and increase the relative fencing of walls by increasing the rigidity of the bearing elements, the anchors of the vertical rows interconnected by rods so that the rods with anchors form vertical power structures. The upper free ends of the rods are attached to the enclosed wall of the building. The invention improves the reliability of fastening of the facade fence and reduce the complexity of the work performed.

The panel fastening system currently used is a rigid connection of the panels to the rails and the rails to the wall of the building using metal brackets. When exposed to the IWV on the panel, they begin to oscillate with a frequency that depends on the size of the panel, its mass, stiffness and the distance between the guides. In this case, the impact force is transmitted through the rigid brackets to the wall with almost the same frequency as the oscillation frequency of the panels themselves. To increase the stability of the load-bearing structures of buildings and structures (walls), it is necessary to bring the dynamic loads transmitted by the panels to the walls, as far as possible, to static loads or at least reduce them to a frequency lower than the frequency of natural vibrations of the load-bearing structures.

The objective of the utility model is to create a structure of a ventilated facade that provides effective protection of building structures of buildings and structures, as well as people, from the damaging factors of an external terrorist or emergency explosion of condensed explosives.

The problem is solved due to the fact that the explosion-proof ventilated facade of a building or structure includes facade plates attached to vertical rails connected to the supporting brackets, which are made with the possibility of fixing them on the facade of a building or structure, and according to a utility model, explosion-proof are used as facade plates sandwich panels, in which the outer layers are made of composite material - laminated plastic, and the intermediate layer is made in the form of a honeycomb aluminum fill a body with a honeycomb arrangement perpendicular to the plane of the panel.

In the described construction of the curtain wall, when the explosion is external to the building, the loads from the air shock wave are first perceived by explosion-proof sandwich panels, which consist of 3 layers. In this case, the outer supporting layers made of a composite material - laminated plastic, provide high flexibility and strength of the sandwich panels, and the intermediate layer between them, made of honeycomb aluminum filler with the arrangement of cells perpendicular to the plane of the panel, provides high compression resistance of the sandwich panels. This combination of load-bearing layers made of flexible laminate and a compression-resistant middle layer made of honeycomb aluminum core ensures the resistance of the sandwich panels to the effects of dynamic loads of the air blast wave. They also make it possible to mitigate the impact of dynamic explosion loads on building structures of buildings and structures, bringing the form of loads close to static.

The weakened explosive load of the sandwich panel through vertical guides and brackets is transferred to the supporting elements of buildings and structures (for example, reinforced concrete columns), thereby unloading light building envelopes, preventing their destruction.

That is, in the claimed utility model, the technical result is achieved by installing between the source of the explosion and the object of protection a high-strength elastic sandwich panel, capable of distributing its momentum through the system of fastening panels to the supporting elements of buildings and structures when reflecting an air shock wave, to be resistant to destruction and expansion fragments when exposed to damaging factors of the explosion

In the particular case of an explosion-proof ventilated facade, the explosion-proof sandwich panels are rigidly attached to vertical rails.

With the specified performance of an explosion-proof ventilated facade with rigid vertical fastening of the sandwich panels to strong vertical guides, the ability of the panels to bend without breaking when exposed to explosive loads is ensured.

In particular, rigid vertical fastening of the sandwich panels to the vertical guides can be performed in a point-like manner with a distance between the attachment points of not more than 300 mm, because in this case, the dynamic parameters of the sandwich panel completely coincide with the parameters of the sandwich panel with continuous rigid fastening along the edges.

In the particular case of an explosion-proof ventilated facade, the supporting brackets comprise a movable insert, a damping element and an abutment. A movable insert with a damping element serves for additional damping of dynamic explosive loads. When exposed to an air shock wave on a sandwich panel, the movable insert compresses the damping element located inside the bracket, thereby “stretching” the time of the impact of the explosive load on the enclosing structures of the building or structure and distributing it over a large area. The stroke of the movable insert is limited by a stop, for example, in the form of a strap. In this case, the damping element can be made, in particular, elastic or crushable. An elastic damping element, restoring its shape after the termination of the explosive load and pressure on it of the movable insert, can be made, in particular, in the form of a rubber insert, for example, a cylindrical shape, or a spring. A crushable damping element that undergoes plastic deformation under the influence of an explosive load and the pressure of a movable insert and does not restore its shape after the termination of this effect can be made, for example, in the form of a ring sleeve.

In the particular case of execution, the explosion-proof ventilated facade further comprises behind the sandwich panels a layer of dense porous material through which the supporting brackets are passed without a gap. This porous layer acts as an additional damper for sandwich panels, which allows to reduce to a greater extent the dynamic loads of the air shock wave of the explosion, as well as the heat insulator and trap of flying apart fragments from the explosion.

As mentioned earlier, the destruction of elements of buildings and structures when exposed to an air shock wave from an explosion occurs due to the transmission of a pressure pulse to them. When performing a ventilated facade of the claimed design, it becomes explosion-proof, because plastic deformation of its elements “stretches” in time and distributes the load from the air shock wave over a large area, thus bringing the dynamic explosive load closer to the static one, which in turn significantly increases the explosion resistance of a building or structure.

The inventive utility model is a device explosion-proof mounted ventilated facade with the following drawings:

in FIG. 1 shows an example of the implementation of the inventive device (fragment of a General view) installed on a building or structure;

in FIG. 2 shows the structure of explosion-proof sandwich panels;

in FIG. 3 shows an example of the implementation of the bearing bracket (General view);

in FIG. 4 shows a diagram of the operation of a damping elastic element of a bearing bracket.

The inventive device explosion-proof mounted ventilated facade (Fig. 1) in all cases includes: facade panels 1, guides 2 and supporting brackets 3. Moreover, the facade plates 1 are attached to vertical guides 2 connected to the supporting brackets 3, which are made with the possibility of their fixing on the facade of a building or structure (using fasteners - Fig. 3).

Explosion-proof sandwich panels are used as facade plates 1 (Fig. 2), in which the outer layers 4 are made of composite material - laminated plastic, and the intermediate layer 5 is made in the form of a honeycomb aluminum core with a honeycomb arrangement perpendicular to the plane of the panel 1.

In the particular case of an explosion-proof ventilated facade, the explosion-proof sandwich panels 1 are rigidly attached to vertical guides 2, in particular by a point method with a distance between the attachment points of not more than 300 mm. (Fig. 1).

In other particular cases, the implementation of an explosion-proof ventilated facade facade bearing brackets 3 (Fig. 3) contain a movable insert 6, a damping element 7 and a stop 8, for example, in the form of a strap.

In this case, the damping element 7 can be made crumpled, for example, in the form of a sleeve-ring (not shown) or elastic, in particular, in the form of a rubber insert (not shown) or in the form of a spring (as shown in Fig. 3, 4).

In particular, in any of the above cases of the claimed utility model (Fig. 1), behind the sandwich panels 1 attached to the vertical guides 2, the explosion-proof hinged ventilated facade may additionally contain a layer 9 of dense porous material through which the carriers are passed without a gap brackets 3.

In an explosion outside a building with a ventilated facade made in accordance with the claimed utility model, it generally “works” as follows.

The load from the air shock wave is first perceived by the explosion-proof sandwich panels 1. At the same time (Fig. 2), the outer supporting layers 4 made of a composite material - laminated plastic, provide high flexibility and strength of the sandwich panels 1, and the intermediate a layer 5 made of honeycomb aluminum aggregate with a honeycomb arrangement perpendicular to the plane of the panel 1, provides high resistance to compression of the sandwich panels. That is, a combination of load-bearing layers 4 of flexible laminate and a compression-resistant middle layer 5 of honeycomb aluminum core ensures the resistance of the sandwich panels 1 to the effects of dynamic loads of an air shock wave of explosion. They also make it possible to mitigate the impact of dynamic explosion loads on building structures of buildings and structures, bringing the form of loads close to static. The weakened explosive load of the sandwich panel 1 (Fig. 1) is transmitted through the vertical guides 2 and the supporting brackets 3 to the load-bearing elements of buildings and structures, thereby unloading light enclosing structures and preventing their destruction.

That is, due to the installation of a high-strength elastic sandwich panel between the source of the explosion and the object of protection, capable of distributing its impulse through the system of fastening the panels to the supporting elements of buildings and structures when reflecting an air shock wave, being resistant to destruction and expansion of fragments when exposed to damaging factors explosion, makes the inventive utility model mounted ventilated facade explosion-proof.

In the particular case of the implementation of the explosion-proof ventilated facade, when the explosion-proof sandwich panels 1 are rigidly attached to vertical guides 2, in particular by the point method with a distance between the attachment points of not more than 300 mm. (Fig. 1), this allows the panels 1 to bend between vertical mounts under the influence of an air shock wave without destruction.

In other particular cases, the implementation of an explosion-proof ventilated facade (Fig. 3), when the supporting brackets 3 contain a movable insert 6, a damping element 7 and an abutment 8, when exposed to an air shock wave sandwich panel, the movable insert 6 compresses the damping element 7 located inside bracket 3 (Fig. 4), thereby "stretching" the time of the impact of the explosive load on the enclosing structures of a building or structure and distributing it over a large area; the stroke of the movable insert 6 is limited by a stop 8, for example, in the form of a strap.

In this case, the damping element 7 can be made, in particular, elastic or crushable. The elastic damping element 7 can be made, in particular, in the form of a rubber insert, for example, a cylindrical shape, or a spring (as shown in Fig. 3, 4). The crushable damping element 7, which does not restore its shape after the termination of the explosive load and pressure on it of the movable insert 6, can be made, for example, in the form of a ring (not shown).

In particular, when in any of the above cases the claimed utility model is executed (Fig. 1), behind the sandwich panels 1 attached to the vertical guides 2, the explosion-proof hinged ventilated facade additionally contains a layer 9 of dense porous material through which the carriers are passed without a gap brackets 3, this porous layer 9 acts as an additional damper for sandwich panels 1, which allows to reduce to a greater extent the dynamic loads of the air shock wave of the explosion, as well as the heat insulator and vlivatelya flying debris from the explosion.

Thus, the explosion-proof facade design allows you to pay off the dynamic load of the air shock wave of the explosion and distribute the load on the load-bearing elements of buildings and structures. At the same time, all the aesthetic and thermal insulation properties of modern hinged facade systems are preserved.

To implement a useful model - an explosion-proof ventilated facade, in all cases of execution, structural elements known to be used in the art can be used, components, materials and fixtures.

So, for example, facade panels 1 (sandwich panels) can be made of laminated plastic or composite material that can withstand loads in the form of a maximum non-destructive voltage of at least 90 MPa with a honeycomb aluminum core inside having the characteristics:

- cell diameter 9.6 mm. (cell face size a _c = 5.54 mm);

- filler thickness - 20 mm .;

- foil thickness δ _c = 0.06 mm.

The guides 2, the bracket 3, the movable insert 6 of the bracket 3 can be made, for example, of a steel profile (stainless steel grade 12 × 18H10T).

The sandwich panels 1 are attached to the guides 2, for example, using aluminum or steel rivets with an increased flange. The distance between the rivets along the axis of the guide is 30 cm.

The bracket 3 is attached to the wall of a building or structure, for example, using anchor fasteners. The length of the brackets 3 with the movable insert 6 fully extended is up to 30 cm. The stroke of the movable insert 6 when subjected to an explosive load is up to 15 cm.

As the elastic damping element 7 can be used, for example, products:

- spring made of stainless steel grade 12X18H10T or 40X13 (the spring is installed in the bracket without a gap);

- a cylinder or parallelepiped made of porous rubber based on latex or hard rubber is installed in the bracket with a gap that takes into account the expansion of the rubber element in the direction perpendicular to the direction of the loads acting on it.

As a crushable damping element 7, for example, a metal hollow corrugated cylinder made of stainless steel 12X18H10T with a wall thickness of 0.5-0.7 mm can be used, and the relative compression of the crumpled element under the influence of explosive loads should be at least 50%.

As the porous material of layer 9, located between the sandwich panels of the suspended ventilated facade and the wall of the building, for example, foamed polyethylene, “Kemoterm AT” can be used.

The given specific example of the construction of a ventilated facade allows protecting a building (structure) from an explosion with an explosive mass of 5 kg in TNT at a minimum permissible distance of 2 m, i.e. protects against external forces of 615 kPa.

Claims (8)

1. Explosion-proof ventilated facade of the building, including facade plates attached to vertical rails connected to the bearing brackets, which are made with the possibility of their fastening on the facade of a building or structure, characterized in that as facade panels use explosion-proof sandwich panels, in which the outer layers are made of a composite material - laminated plastic, and the intermediate layer is made in the form of a honeycomb aluminum filler with a honeycomb arrangement perpendicular to the plane of the pa ate. 2. Explosion-proof curtain wall according to claim 1, characterized in that the explosion-proof sandwich panels are rigidly mounted to vertical rails. 3. The explosion-proof hinged facade according to claim 2, characterized in that the rigid fastening of the sandwich panels to the vertical rails is made pointwise with a distance between the attachment points of not more than 300 mm. 4. Explosion-proof hinged facade according to claim 1, characterized in that the supporting brackets contain a movable insert, a damping element and an emphasis. 5. Explosion-proof hinged facade according to claim 4, characterized in that the damping elements of the bearing brackets are made elastic. 6. Explosion-proof curtain wall according to claim 5, characterized in that the elastic damping elements of the supporting brackets are made in the form of a rubber insert or spring. 7. Explosion-proof hinged facade according to claim 4, characterized in that the damping elements of the supporting brackets are made crushable. 8. Explosion-proof hinged facade in p. 1-7, characterized in that the sandwich panels attached to the vertical guides further comprise a layer of dense porous material through which the supporting brackets are passed without a gap.

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