CN115544619A - Pressure relief method for warehouse for storing class-A articles - Google Patents

Pressure relief method for warehouse for storing class-A articles Download PDF

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CN115544619A
CN115544619A CN202211205167.2A CN202211205167A CN115544619A CN 115544619 A CN115544619 A CN 115544619A CN 202211205167 A CN202211205167 A CN 202211205167A CN 115544619 A CN115544619 A CN 115544619A
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高阳
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China Shipbuilding NDRI Engineering Co Ltd
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China Shipbuilding NDRI Engineering Co Ltd
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Abstract

The invention relates to the field related to the fireproof design of industrial buildings, in particular to a pressure relief method for a warehouse for storing class A articles, which has the advantages that compared with the prior art, the method has fewer judging steps, various basis conditions are omitted, the method is simple and convenient, whether the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles to be built meet the pressure relief design requirements or not can be quickly and accurately judged, the project progress is greatly accelerated, and good working efficiency and economic benefit are obtained; through the pressure release window structure that sets up, when article warehouse took place the accident, the interior explosion pressure value of article warehouse reached 20-40PSF, and the pressure plate receives pressure, and the block moves to the installing port position, and the pressure release window is opened under the pressure effect to release pressure in order to control the production of explosion or to reduce the destruction degree to the minimum, increase the security in warehouse.

Description

Pressure relief method for warehouse for storing class-A articles
Technical Field
The invention relates to the field related to fire prevention design of industrial buildings, in particular to a pressure relief method for a warehouse for storing class-A articles.
Background
At present, in the pressure release design decision-making process to storage class A article warehouse, after length (L), width (W), height (H) of known storage class A article warehouse, judge whether satisfy the pressure release design and need divide three steps again: step one, determining a specific number of a pressure relief ratio C value according to a stored article; secondly, defining the position and the size of an evacuation door and the position and the size of a fire rescue window, providing the size of the respective section of a pillar, a beam and a block low wall, and providing the size of the width of a roof drainage ditch; and thirdly, judging whether the requirement of an aspect ratio formula (L [ (W + H) × 2 ]/(4 × W × H) ≦ 3) is met, whether the requirement of a standard pressure relief area formula (10 × C (1/3L × W × H) 2/3 is not more than the design pressure relief area) is met, and the like, and judging whether the pressure relief design is met. According to the method, after the length (L), the width (W), the height (H), the cross section sizes of a column, a beam and a short wall, the position and the size of an evacuation door, the position and the size of a fire rescue window are known, the size of the width of a roof drainage ditch is given, and whether the requirements of a length-diameter ratio formula (L [ (W + H) × 2 ]/(4 × W H) < 3), a pressure relief area formula (10C × (1/3L × W H) < 2/3 > design pressure relief area) and the like are met or not is judged through design specifications and calculation, and whether the pressure relief design is met or not is judged finally.
The pressure relief design judgment in the prior art is difficult to apply to quick and accurate judgment results under the condition that the length (L), the width (W) and the height (H) of a warehouse for storing class A articles are only known, so that the judgment process is complex, time and labor are wasted, the working efficiency is low, and the judgment result is inaccurate or cannot be judged due to lack of judgment conditions.
Disclosure of Invention
The invention aims to provide a pressure relief method for a warehouse for storing class A articles, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a pressure relief method for a warehouse for storing class A articles comprises the following steps:
step 1, according to design specifications, determining that only a single-layer warehouse is allowed to be built for storing the class A articles, wherein the building area is less than or equal to the maximum area S of the specifications 1 The area of each fire-proof subarea is less than or equal to the standard maximum area S 2 3 fire zones in total, the wide side (W) of each fire zone Partitioning ) The long sides (X) are the same so as to determine the area index of the monomer;
step 2, determining the minimum height of a door frame to be 2.1 meters according to civil building standards, designing a pressure relief window structure according to fire-fighting specifications, determining the minimum width to be 1 meter and the width of the door frame, determining the width of the door to be 1.2 meters, taking 0.15 meter for indoor height difference, and taking 0.6 meter (length) and 0.6 meter (width) for the cross section of a pillar according to the current building quantity, beam, pillar, block wall, fireproof explosion-proof wall and drainage ditch under the most unfavorable condition; the beam section is 0.4 m (width) x0.9 m (height); the block short wall is 1.2 meters (height) x0.24 meters (width); the width of the fireproof and explosion-proof wall is 0.24 meter; the total width of the drainage ditch is 0.7 meter (wide); the roof is a light roof, and the slope is conventionally taken as 5% so as to determine the value of the monomer component;
step 3, preliminarily determining the value ranges of the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles by adopting data reasoning and calculation according to the constraint conditions of the building design specifications;
according to the fire protection standard of a building, the horizontal distance of the nearest edge between a door, a window and a hole on two sides of a fire protection wall is not less than 2.0 m; the clear height and the clear width of a window for fire rescue personnel to enter are not less than 1.0 m, the distance is not more than 20 m, and each fire-protection subarea is not less than 2, so that the minimum value of the long edge (X) of each fire-protection subarea, namely X, is obtained MIN Not less than 3.4 m, L MIN Not less than 10.2 m;
according to step S 1 It can be seen that the length (L) and width (W) are less than or equal to the standard maximum area S 1 When the length (L) takes the minimum value, i.e. the minimum length (L) MIN ) When =10.2 m, the width (W) is the maximum value, and the minimum length (L) is thus known MIN ) Maximum width (W) MAX ) Less than or equal to the standard maximum area S 1 Maximum width (W) MAX )≤S 1 /L MIN The width (W) is composed of the width of pillars at two sides and the distance between the pillars, the width of the pillars is 0.6 meter, the distance between the pillars is the minimum value width which meets the evacuation requirement of the fire protection design, namely 1.4 meters, and the minimum width (W) is determined MIN ) Not less than 0.6 m +1.4 m +0.6 m =4.6 m, plus the maximum width (W) MAX )≤S 1 /L MIN Preliminarily determining the width (W) value range of the warehouse as follows: w is not less than 4.6 m and not more than S 1 /L MIN ；
According to a known minimum length (L) MIN ) More than or equal to 10.2 m, length (L) width (W) less than or equal to standard maximum area S 1 When the width (W) takes a minimum value, i.e. the minimum width (W) MIN ) If =4.6 m, the length (L) is the maximum value, and the maximum length (L) can be obtained thereby MAX ) Minimum width (W) MIN ) Less than or equal to the standard maximum area S 1 Maximum length (L) MAX )≤S 1 /W MIN Thus, the length (L) span of the warehouse is preliminarily determined to be: 10.2 m or lessThe length (L) is less than or equal to S 1 /W MIN ；
The height of the beam determined according to the step 2 is 0.9 meter, the height of the door is 2.1 meters, and therefore the minimum height (H) of the building can be obtained MIN ) Not less than 3 m, therefore, the height (H) of the warehouse is not less than 3 m preliminarily determined;
and 4, verifying and determining the value ranges of the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles by adopting data reasoning and nonlinear equation system calculation according to the constraint conditions of the building design specifications.
Preferably, pressure release window structure includes frame, wallboard main part, mounting bracket and pressure release window in step 2, frame surface mounting has the wallboard main part, wallboard main part surface is provided with the mounting bracket as required by the design, the pressure release window is installed through connecting the pivot in the middle of the mounting bracket is inside, pressure release window top both sides are provided with the fixed block, mounting bracket inner chamber top both sides set up the mount pad, the mounting groove has been seted up to mount pad both sides surface, gomphosis sliding connection has the installation piece in the mounting groove, installation piece one side is connected with the gag lever post in the mount pad outside, the sliding tray has been seted up in mount pad inner chamber lateral wall to the gag lever post below, the sliding tray is embedded to close sliding connection has the slide bar, slide bar one end has the connecting block, two through linkage pivot connection in the middle of the connecting block side the block is installed to gangbar one end, mount pad inner chamber lateral wall is connected with hydraulic telescoping rod, the linkage piece is installed on the hydraulic telescoping rod top, the linkage piece top is connected with the connecting rod, connecting rod one end is connected with the pressure plate in the mount pad outside.
Preferably, the two linkage rods are arranged in a mutually crossed manner and movably connected through a linkage rotating shaft.
Preferably, a mounting opening is formed in the middle of the surface of the top of the fixing block, a communicating groove is formed in the middle of the bottom of the mounting base, the communicating groove corresponds to the mounting opening in position, the linkage rod sequentially penetrates through the communicating groove and the mounting opening, and the clamping block is fixedly connected with the top of the inner cavity of the fixing block in a clamping mode.
Preferably, the cross section of the linkage block is trapezoidal, the middle of the inclined planes at the two sides of the linkage block is provided with an embedded sliding groove, the connecting block is in embedded sliding connection with the embedded sliding groove through the embedded block, and the periphery of the hydraulic telescopic rod is sleeved with a spring.
Preferably, a spring is connected between one end of the mounting block and the side wall of the inner cavity of the mounting groove, a limiting groove is formed in the surface of one end of the sliding rod, and the limiting rod is fixedly connected with the limiting groove in an inserted manner.
Preferably, the specific contents of the value ranges of the length (L), the width (W) and the height (H) of the warehouse for storing the class a articles, which are verified and determined in the step 4, include:
according to the building fire-proof standard, the length (L), width (W) and height (H) of the building have the length-diameter ratio of no more than 3, namely length (L) [ (width (W) + height (H))) 2]V (4W width (W) height (H)). Ltoreq.3; normalized relief area ≤ design relief area, i.e., 10 × relief ratio (C) × length (L) × width (W) × height (H) 2/3 The designed pressure relief area is less than or equal to, and the pressure relief ratio (C) = 0.030-0.250 according to the standard requirement, thus the designed pressure relief ratio (C) is obtained Design of ) The value is 0.25;
obtaining the pressure relief area part according to the external surface area: designed length (lbatch) = length (L) -pillar width; designed height (H design) = height (H) -low wall height-boundary beam height; designed width (wtesign) = width (W) -gutter width-ridge beam width, from which the following nonlinear system of equations is derived:
the length (L) of 10.2 m is less than or equal to S 1 /W MIN ；
Width (W) of 4.6 m or more and S or less 1 /L MIN ；
The height (H) is more than or equal to 3 m;
length (L) width (W) less than or equal to standard maximum area S 1 ；
1/3 length (L) [ (width (W) + height (H)) × 2 ]/(4 width (W) × height (H)) ≦ 3;
10 x 0.25 x (1/3 x length (L) width (W) height (H)) 2/3 ≦ 2 x [ (height (H) -0.9 m-1.2 m) ((1/3 x length (L) -0.6 m 4) + (1/2 x width (W) -0.7 m-0.2 m) ((1/3 x length (L) -0.4 m 4) ];
solving the above non-linear equationVerifying and determining the value ranges of the length (L), the width (W) and the height (H) of the storage class A article warehouse as follows: length (L) is less than or equal to 10.2 m and less than or equal to S 1 /W MIN (ii) a 4.6 m or more and width (W) or more 1 /L MIN (ii) a And the height (H) is not less than 6.02 m and not more than 2131287 x 1022 m, and whether the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles meet the pressure relief design requirement or not is judged according to the height (H).
Compared with the prior art, the invention has the beneficial effects that: compared with the prior art, the method has the advantages that the judging steps are few, various basis conditions are omitted, the method is simple and convenient, whether the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles to be built meet the pressure relief design requirement or not can be judged quickly and accurately, the engineering progress is greatly accelerated, and good working efficiency and economic benefit are obtained; through the pressure release window structure that sets up, when article warehouse took place the accident, the interior explosion pressure value of article warehouse reached 20-40PSF, and the pressure plate receives pressure, and the block moves to the installing port position, and the pressure release window is opened under the pressure effect to release pressure in order to control the production of explosion or to reduce the destruction degree to the minimum, increase the security in warehouse.
Drawings
FIG. 1 is a value-taking diagram of the door width, column cross section, block wall width, and fire and explosion protection wall width;
FIG. 2 is a graph of roof slope readings;
FIG. 3 is a schematic side length view of a fire zone;
FIG. 4 is a schematic view of the overall structure of the pressure relief window of the present invention;
FIG. 5 is a schematic view of a connection structure of a pressure relief window and a mounting bracket according to the present invention;
FIG. 6 is a schematic view of the mounting base structure of the present invention;
FIG. 7 is a schematic view of a linkage block structure according to the present invention;
FIG. 8 is an enlarged view of the structure at A in FIG. 6 according to the present invention.
In the figure: 1. a frame; 2. a wallboard body; 3. a mounting frame; 4. a pressure relief window; 5. connecting the rotating shaft; 6. a fixed block; 7. mounting grooves; 8. a mounting seat; 9. a pressure plate; 10. embedding the sliding chute; 11. a fitting block; 12. connecting blocks; 13. a linkage rod; 14. a linkage rotating shaft; 15. a communicating groove; 16. an installation port; 17. a clamping block; 18. a connecting rod; 19. a linkage block; 20. a hydraulic telescopic rod; 21. a spring; 22. a slide bar; 23. a sliding groove; 24. a limiting rod; 25. a limiting groove; 26. and (7) installing the block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Referring to fig. 1-8, the present invention provides a technical solution: a pressure relief method for a warehouse for storing class A articles comprises the following steps:
step 1, according to design specifications, determining that only a single-layer warehouse is allowed to be built for storing the class A articles, wherein the building area is smaller than or equal to the maximum area S of the specifications 1 The area of each fire-proof subarea is less than or equal to the standard maximum area S 2 3 fire zones in total, the wide side (W) of each fire zone Partitioning ) The long sides (X) are the same so as to determine the area index of the monomer;
step 2, determining the minimum height of a door frame to be 2.1 meters according to civil building standards, designing a pressure relief window structure according to fire-fighting specifications, determining the minimum width to be 1 meter and the width of the door frame, determining the width of the door to be 1.2 meters, taking 0.15 meter for indoor height difference, and taking 0.6 meter (length) and 0.6 meter (width) for the cross section of a pillar according to the current building quantity, beam, pillar, block wall, fireproof explosion-proof wall and drainage ditch under the most unfavorable condition; the beam section is 0.4 m (width) x0.9 m (height); the block short wall is 1.2 m (height) x0.24 m (width); the width of the fireproof and explosion-proof wall is 0.24 meter; the total width of the drainage ditch is 0.7 meter (wide); the roof is a light roof, and the slope is conventionally taken as 5% so as to determine the value of the monomer component;
step 3, preliminarily determining the value ranges of the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles by adopting data reasoning and calculation according to the constraint conditions of the building design specifications;
according to the fire protection standard of a building, the horizontal distance between the nearest edges of doors, windows and holes at two sides of a fire protection wall is not less than 2.0 m; the clear height and the clear width of a window for fire rescue personnel to enter should not be less than 1.0 m, the distance should not be more than 20 m, and each fire partition should not be less than 2, so as to obtain the minimum value of the long edge (X) of each fire partition, namely X MIN Not less than 3.4 m, L MIN Not less than 10.2 m;
according to step S 1 It is known that the length (L) × width (W) is not more than the standard maximum area S 1 When the length (L) takes the minimum value, i.e. the minimum length (L) MIN ) If =10.2 m, the width (W) is the maximum value, and the minimum length (L) is thus obtained MIN ) Maximum width (W) MAX ) Less than or equal to the standard maximum area S 1 Maximum width (W) MAX )≤S 1 /L MIN The width (W) is composed of the width of pillars at two sides and the distance between the pillars, the width of the pillars is 0.6 meter, the distance between the pillars is the minimum value width which meets the evacuation requirement of the fire protection design, namely 1.4 meters, and the width is ensuredDefining a minimum width (W) MIN ) Not less than 0.6 m +1.4 m +0.6 m =4.6 m, plus the maximum width (W) MAX )≤S 1 /L MIN Preliminarily determining the width (W) value range of the warehouse as follows: w is more than or equal to 4.6 m and less than or equal to S 1 /L MIN ；
According to a known minimum length (L) MIN ) More than or equal to 10.2 m, length (L) width (W) less than or equal to standard maximum area S 1 When the width (W) takes a minimum value, i.e., the minimum width (W) MIN ) If =4.6 m, the length (L) is the maximum value, and the maximum length (L) can be obtained thereby MAX ) Minimum width (W) MIN ) Less than or equal to the standard maximum area S 1 Maximum length (L) MAX )≤S 1 /W MIN Thus, the length (L) span of the warehouse is preliminarily determined to be: length (L) is less than or equal to 10.2 m and less than or equal to S 1 /W MIN ；
The height of the beam determined according to the step 2 is 0.9 meter, the height of the door is 2.1 meters, and therefore the minimum height (H) of the building can be obtained MIN ) Not less than 3 m, therefore, the height (H) of the warehouse is not less than 3 m preliminarily determined;
and 4, verifying and determining the value ranges of the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles by adopting data reasoning and nonlinear equation system calculation according to the constraint conditions of the building design specifications.
Further, in step 2, the pressure relief window structure includes a frame 1, a wallboard main body 2, a mounting rack 3 and a pressure relief window 4, the surface of the frame 1 is provided with the mounting rack 3 according to design requirements, the pressure relief window 4 is installed through a connecting rotating shaft 5 in the middle of the inside of the mounting rack 3, the top two sides of the pressure relief window 4 are provided with fixing blocks 6, the top two sides of the inner cavity of the mounting rack 3 are provided with a mounting seat 8, the outer surfaces of the two sides of the mounting seat 8 are provided with a mounting groove 7, a mounting block 26 is embedded in the mounting groove 7 and slidably connected with a mounting block 26, one side of the mounting block 26 is connected with a limiting rod 24 outside the mounting seat 8, a sliding groove 23 is arranged below the limiting rod 24 and is connected with an inner cavity side wall of the mounting seat 8, a sliding rod 22 is embedded in the sliding groove 23 and slidably connected with a sliding rod, one end of the sliding rod 22 is connected with a connecting block 12 in the mounting seat 8, the middle of the two connecting blocks 12 side surfaces is connected with a linkage rod 13 through a linkage rotating shaft 14, a clamping block 17 is installed at one end of the two linkage rods 13, the inner cavity side wall of the mounting seat 8 is connected with a hydraulic telescopic rod 20, a linkage 19, a linkage block 19 is connected with a hydraulic telescopic rod 20, the top end of the top of the hydraulic telescopic rod 20, a linkage block 19, the linkage block is connected with a connecting rod 18, the top end is connected with a connecting rod 18 outside the mounting seat 8.
Furthermore, the linkage rods 13 are arranged in a cross manner and movably connected through a linkage rotating shaft 14.
Furthermore, a mounting opening 16 is formed in the middle of the surface of the top of the fixing block 6, a communicating groove 15 is formed in the middle of the bottom of the mounting seat 8, the position of the communicating groove 15 corresponds to the position of the mounting opening 16, the linkage rod 13 sequentially penetrates through the communicating groove 15 and the mounting opening 16, and the clamping block 17 is clamped and fixedly connected with the top of the inner cavity of the fixing block 6.
Furthermore, the cross section of the linkage block 19 is trapezoidal, the middle of the inclined planes at two sides of the linkage block 19 is provided with an embedded sliding groove 10, the connecting block 12 is in embedded sliding connection with the embedded sliding groove 10 through an embedded block 11, and the periphery of the hydraulic telescopic rod 20 is sleeved with a spring 21.
Further, a spring 21 is connected between one end of the mounting block 26 and the side wall of the inner cavity of the mounting groove 7, a limiting groove 25 is formed in the surface of one end of the sliding rod 22, and the limiting rod 24 is fixedly connected with the limiting groove 25 in an inserting manner.
Further, the specific contents of the value ranges of the length (L), the width (W) and the height (H) of the warehouse for storing the class a articles, which are verified and determined in the step 4, include:
according to the building fire-proof standard, the length (L), width (W) and height (H) of the building have the length-diameter ratio of no more than 3, namely length (L) [ (width (W) + height (H))) 2]V (4W width (W) height (H)). Ltoreq.3; normalized pressure relief area is not greater than design pressure relief area, i.e., 10 pressure relief ratio (C), length (L), width (W), height (H) 2/3 The designed pressure relief area is less than or equal to, and the pressure relief ratio (C) = 0.030-0.250 according to the standard requirement, thus the designed pressure relief ratio (C) is released Design of ) The value is 0.25;
obtaining the pressure relief area part according to the external surface area: designed length (ltesign) = length (L) -post width; designed height (H design) = height (H) -low wall height-boundary beam height; designed width (wsign) = width (W) -gutter width-ridge beam width, resulting in the following nonlinear system of equations:
length (L) is less than or equal to 10.2 m and less than or equal to S 1 /W MIN ；
4.6 m or more and width (W) or more 1 /L MIN ；
The height (H) is more than or equal to 3 m;
length (L) width (W) is less than or equal to standard maximum area S 1 ；
1/3 length (L) [ (width (W) + height (H)) × 2 ]/(4) × width (W) × height (H)) < 3;
10 x 0.25 x (1/3 x length (L) width (W) height (H)) 2/3 ≦ 2 x [ (height (H) -0.9 m-1.2 m) ((1/3 x length (L) -0.6 m 4) + (1/2 x width (W) -0.7 m-0.2 m) ((1/3 x length (L) -0.4 m 4) ];
solving the nonlinear equation, verifying and determining the value ranges of the length (L), the width (W) and the height (H) of the storage class A article warehouse as follows: the length (L) of 10.2 m is less than or equal to S 1 /W MIN (ii) a Width (W) of 4.6 m or more and S or less 1 /L MIN (ii) a Height (H) of no less than 6.02 m and no more than 2131287 x 10 22 And determining whether the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles to be built meet the pressure relief design requirement or not.
Pressure release window structure theory of operation: when the explosion pressure value that uses pressure plate 9 reaches 20-40PSF, pressure plate 9 drives connecting rod 18, linkage block 19 and hydraulic telescoping rod 20 remove, make connecting block 12 slide along the inclined plane of linkage block 19, let and be close to each other between two connecting blocks 12, thereby drive two gangbars 13 and draw close together, make block 17 move to installing port 16 position, make block 17 remove along installing port 16 and break away from with fixed block 6, block 17 does not play the fixed action to fixed block 6 this moment, pressure release window 4 also opens under the effect of explosion pressure simultaneously, release pressure reduces to minimum with the production of control explosion or with the destruction degree.
Compared with the prior art, the method has the advantages that the judging steps are few, various basis conditions are omitted, the method is simple and convenient, whether the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles to be built meet the pressure relief design requirement or not can be judged quickly and accurately, the engineering progress is greatly accelerated, and good working efficiency and economic benefit are obtained; through the pressure release window structure that sets up, when article warehouse happened the accident, the interior explosion pressure value of article warehouse reached 20-40PSF, and pressure plate 9 receives pressure, and block 17 moves to the installing port 16 position, and pressure release window 4 opens under the pressure effect to release pressure is with the production of control explosion or reduce the destruction degree to minimum, increases the security in warehouse.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A pressure relief method for a warehouse for storing class A articles is characterized by comprising the following steps:
step 1, according to design specifications, determining that only a single-layer warehouse is allowed to be built for storing the class A articles, wherein the building area is smaller than or equal to the maximum area S of the specifications 1 The area of each fire-protection subarea is less than or equal to the standard maximum area S 2 3 fire zones in total, the wide side (W) of each fire zone Partitioning ) The long sides (X) are the same so as to determine the area index of the monomer;
step 2, determining the minimum height of a door frame to be 2.1 meters according to civil building standards, designing a pressure relief window structure according to fire-fighting specifications, determining the minimum width to be 1 meter and the width of the door frame, determining the width of the door to be 1.2 meters, taking 0.15 meter for indoor height difference, and taking 0.6 meter (length) and 0.6 meter (width) for the cross section of a pillar according to the current building quantity, beam, pillar, block wall, fireproof explosion-proof wall and drainage ditch under the most unfavorable condition; the cross section of the beam is 0.4 meter (width) x0.9 meter (height); the block short wall is 1.2 m (height) x0.24 m (width); the width of the fireproof and explosion-proof wall is 0.24 meter; the total width of the drainage ditch is 0.7 m (width); the roof is a light roof, and the slope is conventionally taken as 5% so as to determine the value of the monomer component;
step 3, preliminarily determining the value ranges of the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles by adopting data reasoning and calculation according to the constraint conditions of the building design specifications;
according to the fire protection standard of a building, the horizontal distance of the nearest edge between a door, a window and a hole on two sides of a fire protection wall is not less than 2.0 m; the clear height and the clear width of a window for fire rescue personnel to enter should not be less than 1.0 m, the distance should not be more than 20 m, and each fire partition should not be less than 2, so as to obtain the minimum value of the long edge (X) of each fire partition, namely X MIN Not less than 3.4 m, L MIN More than or equal to 10.2 meters;
according to step S 1 It is known that the length (L) × width (W) is not more than the standard maximum area S 1 When the length (L) takes the minimum value, i.e. the minimum length (L) MIN ) When =10.2 m, the width (W) is the maximum value, and the minimum length (L) is thus known MIN ) Maximum width (W) MAX ) Less than or equal to the standard maximum area S 1 Maximum width (W) MAX )≤S 1 /L MIN The width (W) is composed of the width of pillars at two sides and the distance between the pillars, the width of the pillars is 0.6 meter, the distance between the pillars is the minimum value width meeting the evacuation requirement of the fire protection design, namely 1.4 meters, and the minimum width (W) is determined MIN ) Not less than 0.6 m +1.4 m +0.6 m =4.6 m, plus the maximum width (W) MAX )≤S 1 /L MIN Preliminarily determining the width (W) value range of the warehouse as follows: w is more than or equal to 4.6 m and less than or equal to S 1 /L MIN ；
According to a known minimum length (L) MIN ) More than or equal to 10.2 m, length (L) width (W) less than or equal to standard maximum area S 1 When the width (W) takes a minimum value, i.e. the minimum width (W) MIN ) If =4.6 m, the length (L) is the maximum value, and the maximum length (L) can be obtained thereby MAX ) Minimum width (W) MIN ) Less than or equal to the standard maximum area S 1 Maximum length (L) MAx )≤S 1 /W MIN Thus, the length (L) span of the warehouse is preliminarily determined to be: length (L) is less than or equal to 10.2 m and less than or equal to S 1 /W MIN ；
The height of the beam determined according to the step 2 is 0.9 meter, the height of the door is 2.1 meters, and therefore the minimum height (H) of the building can be obtained MIN ) Not less than 3 m, therefore, the height (H) of the warehouse is not less than 3 m preliminarily determined;
and 4, verifying and determining the value ranges of the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles by adopting data reasoning and nonlinear equation system calculation according to the constraint conditions of the building design specifications.
2. The method for relieving pressure in a storage warehouse for storing class A articles as claimed in claim 1, wherein: the pressure relief window structure in the step 2 comprises a frame (1), a wallboard main body (2), a mounting frame (3) and pressure relief windows (4), wherein the wallboard main body (2) is installed on the surface of the frame (1), the mounting frame (3) is arranged on the surface of the wallboard main body (2) according to design requirements, the pressure relief windows (4) are installed in the middle of the inner portion of the mounting frame (3) through a connecting rotating shaft (5), fixed blocks (6) are arranged on two sides of the top of the pressure relief windows (4), mounting seats (8) are arranged on two sides of the top of an inner cavity of the mounting frame (3), mounting grooves (7) are formed in the outer surfaces of two sides of the mounting seat (8), mounting blocks (26) are embedded in the mounting grooves (7) in a sliding connection mode, limiting rods (24) are connected to one side of the mounting seats (8), sliding grooves (23) are formed in the side walls of the mounting seats (8) below the limiting rods (24), sliding rods (22) are embedded in the sliding grooves (23) in a sliding connection mode, one ends of the sliding rods (22) are connected to the connecting blocks (12) through the connecting blocks (13), and one end of each linkage rod (17) is connected to the connecting block (13), the utility model discloses a hydraulic telescopic rod, including mount pad (8), mount pad (8) cavity lateral wall is connected with hydraulic telescopic rod (20), linkage block (19) are installed on hydraulic telescopic rod (20) top, linkage block (19) top is connected with connecting rod (18), connecting rod (18) one end is connected with pressure plate (9) in mount pad (8) outside.
3. The method for relieving pressure in a storage warehouse for storing class A articles as claimed in claim 2, wherein: the two linkage rods (13) are arranged in a mutually crossed manner and are movably connected through a linkage rotating shaft (14).
4. The method of claim 2, wherein the method comprises the steps of: the utility model discloses a fixed block (6) is including fixed block, linkage rod (13), mounting hole (16) have been seted up in the middle of fixed block (6) top surface, intercommunication groove (15) have been seted up in the middle of mount pad (8) bottom, and intercommunication groove (15) position is corresponding with mounting hole (16) position, linkage rod (13) run through intercommunication groove (15) and mounting hole (16) in proper order, looks block fixed connection between block (17) and fixed block (6) inner chamber top.
5. The method of claim 2, wherein the method comprises the steps of: the cross section of the linkage block (19) is trapezoidal, the middle of the inclined planes on the two sides of the linkage block (19) is provided with an embedded sliding groove (10), the connecting block (12) is in embedded sliding connection with the embedded sliding groove (10) through an embedded block (11), and the periphery of the hydraulic telescopic rod (20) is sleeved with a spring (21).
6. The method for relieving pressure in a storage warehouse for storing class A articles as claimed in claim 2, wherein: be connected with spring (21) between installation piece (26) one end and mounting groove (7) inner chamber lateral wall, spacing groove (25) have been seted up on slide bar (22) one end surface, gag lever post (24) and spacing groove (25) are inserted mutually and are closed fixed connection.
7. The method of claim 1, wherein the method further comprises the steps of: the specific contents of verifying and determining the value ranges of the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles in the step 4 comprise the following steps:
according to the building fire-proof standard, the length (L), width (W) and height (H) of the building have the length-diameter ratio of no more than 3, namely length (L) [ (width (W) + height (H))) 2](4 width (W) height (H)). Ltoreq.3; normalized pressure relief area is not greater than design pressure relief area, i.e., 10 pressure relief ratio (C), length (L), width (W), height (H) 2/3 The designed pressure relief area is less than or equal to, and the pressure relief ratio (C) = 0.030-0.250 according to the standard requirement, thus the designed pressure relief ratio (C) is obtained Design of ) The value is 0.25;
obtaining the pressure relief area part according to the external surface area: designed length (lbatch) = length (L) -pillar width; designed height (H design) = height (H) -low wall height-boundary beam height; designed width (wsign) = width (W) -gutter width-ridge beam width, resulting in the following nonlinear system of equations:
length (L) is less than or equal to 10.2 m and less than or equal to S 1 /W MIN ；
Width (W) of 4.6 m or more and S or less 1 /L MIN ；
The height (H) is more than or equal to 3 m;
length (L) width (W) is less than or equal to standard maximum area S 1 ；
1/3 length (L) [ (width (W) + height (H)) × 2 ]/(4) × width (W) × height (H)) < 3;
10 x 0.25 x (1/3 x length (L) width (W) height (H)) 2/3 ≦ 2 x [ (height (H) -0.9 m-1.2 m) ((1/3 x length (L) -0.6 m 4) + (1/2 x width (W) -0.7 m-0.2 m) ((1/3 x length (L) -0.4 m 4) ];
solving the nonlinear equation, verifying and determining the value ranges of the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles as follows: the length (L) of 10.2 m is less than or equal to S 1 /W MIN (ii) a Width (W) of 4.6 m or more and S or less 1 /L MIN (ii) a Height (H) of no less than 6.02 m and no more than 2131287 x 10 22 And judging whether the length (L), the width (W) and the height (H) of the warehouse for storing the class A articles to be built meet the pressure relief design requirement or not.
CN202211205167.2A 2022-09-29 2022-09-29 Pressure relief method for warehouse for storing class-A articles Pending CN115544619A (en)

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