RU2015140557A - KETCHET SAFETY DESTRUCTIVE CONSTRUCTION FOR PROTECTING BUILDINGS WITH AN ALARM SYSTEM - Google Patents

Claims (9)

The collapsible safety structure of the enclosure containing reinforced concrete panels measuring 6000 × 1800 mm, the panel consists of collapsing and non-collapsing parts, while the non-collapsing part is made in the form of load-bearing ribs placed along the contour of the collapsing part, and the collapsing part is made in the form of at least two coaxially located recesses in the wall of the building, one of which, the outer one, is formed by the planes of a regular quadrangular truncated pyramid with a rectangular base, and the other is the inner one, before It consists of two inclined surfaces connected by an edge, with the formation of a groove, while the wall thickness from the edge to the outer surface of the building enclosure should be at least δ = 20 mm, while under the influence of shock explosive load this section of the wall can be divided into separate parts , and the area of the collapsing part of the openings is calculated by the formula:

, where Vo is the free volume of the room, m ³ ; α is the coefficient of intensification of combustion; w _n - normal flame propagation velocity in a mixture of stoichiometric composition, m / s; ρ is the density of gases flowing from the openings, kg / m ³ ; ε is the degree of thermal expansion of the combustion products; Δp _add - allowable room pressure (5 kPa), and on the contrary to the collapsing part, on the outside of the building’s enclosure, there is a protective shield made of high-strength material, such as armor-piercing material, which is fixed to at least three horizontally located and perpendicular to the building’s enclosures, rods at the ends of which the disks are fixed, and which pass through the holes in the protective screen, and the disks located on the right side of the rods are walled up in the building fencing, and the elastic elements supporting the protection abut against the disks on the left side of the rods the screen to the building enclosure, characterized in that the protective screen is made in the form of a three-dimensional body with an internal cavity, and surfaces equidistant to the surfaces of the collapsing part of the panel, made in the form of coaxially located niches in the wall of the building, while its internal cavity is filled with a dispersed air lead, and lead is made in the form of crumbs of a spherical shape, and between the disk and the armored screen, a sleeve of quick-breaking material, such as glass, such as triplex, is installed on the support rod is on its outer side surface is fixed safety indicator configured as a sensor which reacts to the deformation, for example strain gauges, which output is connected to a signal amplifier, such as strain amplifier, and the strain amplifier output coupled to an input device of the system notification of an emergency.