A lightweight explosion-resistant building

Abstract

The present invention provides a lightweight explosion-proof building comprising an explosion-proof frame and explosion-proof panels. The explosion-proof frame comprises wall components and roof components. The wall components comprise a plurality of wall columns and wall keels, wherein the wall columns and wall keels are crisscrossed and connected to form a lattice-structured wall. The roof components comprise a plurality of roof beams and roof keels, wherein the roof beams and roof keels are crisscrossed and connected to form a lattice-structured roof. The upper ends of the wall columns are connected to the roof beams, and the explosion-proof panels are fixed to the grid of the wall and / or roof. The lightweight explosion-proof building provided by the present invention solves the problem of renovating existing buildings, avoids damage to existing buildings, and has great technical and economic significance for explosion-proof structural engineering.

Description

Technical Field

[0001] The invention belongs to the technical field of building structures and relates to an explosion-resistant building with a light structure. Background Art

[0002] Explosion risks are common in areas like the petrochemical industry, where flammable and explosive substances are involved. Once an explosion occurs, buildings within its radius will be subjected to the blast shock load, posing a significant safety risk. With the implementation of regulations related to explosion-resistant safety, some existing buildings that fail to meet the new standards will face the need for abandonment or new construction. This means owners may face significant economic losses from production and work stoppages. Therefore, retrofitting these existing buildings with explosion-resistant materials can, to a certain extent, address this issue for owners.

[0003] In the actual project of explosion-proof reinforcement and renovation of existing buildings, some old buildings are very difficult to reinforce and renovate due to their long construction years, the renovation cost is also very high, or the plan is difficult to implement due to restrictions on construction conditions. The explosion-proof reinforcement and renovation project urgently needs to study innovative solutions. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a lightweight explosion-resistant building to solve the problem that the original structure of existing buildings is not suitable for reinforcement or the reinforcement plan is difficult to implement.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a lightweight explosion-proof building, comprising an explosion-proof frame and explosion-proof panels, wherein the explosion-proof frame comprises wall components and roof components, wherein the wall components comprise a plurality of wall columns and wall keels, wherein the wall columns and the wall keels are crisscrossed and connected to form a wall with a mesh structure, wherein the roof components comprise a plurality of roof beams and roof keels, wherein the roof beams and the roof keels are crisscrossed and connected to form a roof with a mesh structure, wherein the upper ends of the wall columns are connected to the roof beams, and the explosion-proof panels are fixed to the grid of the wall and / or roof.

[0006] Preferably, when in use, the explosion-proof frame is placed outside an existing building, and a gap is maintained between the explosion-proof frame and the outer contour of the existing building.

[0007] More preferably, the gap is calculated according to formula (1), which is: S>MAX(a, b, c), wherein S is the gap between the explosion-proof frame and the outer contour of the existing building; a is the maximum deformation of the explosion-proof frame under explosion conditions; b is the maximum deformation of the explosion-proof frame under non-explosion conditions; and c is the minimum gap determined by the maximum external dimensions of the existing building and the minimum construction space.

[0008] Preferably, the wall components and roof components are made of steel.

[0009] Preferably, in the wall components and roof components, the connection between the wall columns and the wall keels, the roof beams and the roof keels, and the wall columns and the roof beams are achieved by welding.

[0010] Preferably, in the wall components and roof components, the wall columns and roof beams are made of square steel, and the wall keels and roof keels are made of C-shaped steel.

[0011] Preferably, the wall columns and the roof beams, the wall columns and the wall keels, and the roof beams and the roof keels are perpendicular to each other.

[0012] Preferably, the wall keels and the roof keels are parallel to each other.

[0013] Preferably, the explosion-proof plate is provided with a first steel plate layer, a fiber cement layer, and a second steel plate layer in sequence from the front explosion surface to the back explosion surface, and the thickness ratio of the first steel plate layer, the fiber cement layer, and the second steel plate layer is 0.3-0.7:8.0-9.0:0.3-0.7.

[0014] More preferably, the steel plates used for the first steel plate layer and the second steel plate layer are galvanized steel plates.

[0015] More preferably, the material used for the fiber cement layer is fiber cement.

[0016] Preferably, punching holes are provided on the corners of the explosion-proof panels, and the explosion-proof panels are bolted to the grids of the wall and / or roof through the punching holes.

[0017] More preferably, the screws used for the bolt connection are hexagonal self-drilling screws.

[0018] Preferably, a foundation is provided at the bottom of the wall column, and the wall column is connected to the site foundation through the foundation.

[0019] More preferably, the foundation is a strip foundation.

[0020] More preferably, the top of the foundation is provided with an embedded plate, the bottom of the foundation is provided with a cushion layer, and the explosion-proof building further includes an isolation plate for isolating the foundation from the existing building.

[0021] Further preferably, the embedded plate is a steel plate with built-in anchor bars.

[0022] Further preferably, the cushion layer is a plain concrete layer, and the thickness of the cushion layer is 80-120 mm.

[0023] Further preferably, the isolation board is an extruded polystyrene board, and the thickness of the isolation board is 1-3 mm.

[0024] As described above, the present invention provides a lightweight explosion-proof building that is housed on the outside of an existing building. The explosion-proof structural system is used to resist external explosion impact loads, thereby avoiding damage to the existing building. The lightweight explosion-proof building provided by the present invention is mainly aimed at the problems in the explosion-proof reinforcement and renovation of existing buildings, where the original structure itself is not suitable for reinforcement and renovation, the renovation cost is high, or the renovation plan is difficult to implement due to construction conditions. It solves the difficult problem of renovating existing buildings. This lightweight explosion-proof building expands the scope of application of explosion-proof reinforcement and renovation projects for existing buildings, and has great technical and economic significance for explosion-proof structural projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 shows the relative relationship between the existing building and the explosion-proof building in the present invention Figure 1a 、 1b , 1c, 1d, among which, Figure 1a This is the ground floor plan of the explosion-resistant building; Figure 1b This is the floor plan of the explosion-resistant building roof; Figure 1c This is a cross-section of a blast-resistant building; Figure 1d This is the elevation drawing of the explosion-proof building.

[0026] FIG2 shows the structural arrangement of each component in the explosion-proof building of the present invention Figure 2a 、 2b , 2c, where Figure 2a This is the layout diagram of the wall components of the explosion-resistant building; Figure 2b This is the layout drawing of the roof components of the explosion-resistant building; Figure 2c This is the structural elevation section of the explosion-resistant building.

[0027] FIG3 shows a schematic diagram of the connection between the explosion-proof plate and the explosion-proof frame in the present invention. Figure 3a 、 3b , 3c, among which, Figure 3a This is the connection layout diagram of the explosion-proof plate and the explosion-proof frame; Figure 3b The connection node diagram between the wall column or roof beam and the explosion-proof panel; Figure 3c This is the connection node diagram between the wall keel or roof keel and the explosion-proof panel.

[0028] FIG4 shows the connection structure of each component in the explosion-proof building of the present invention Figure 4a 、 4b ,in, Figure 4a This is the connection node diagram between the roof beams and the wall columns; Figure 4b This is a diagram of the connection nodes between the wall studs and wall columns or between the roof studs and roof beams.

[0029] FIG5 shows a schematic diagram of the foundation of the explosion-proof building in the present invention. Figure 5a 、 5b ,in, Figure 5a It is a strip foundation diagram for explosion-resistant buildings; Figure 5b This is a cross-section diagram of the strip foundation of an explosion-resistant building.

[0030] Figure 6 A three-dimensional structural diagram showing the explosion-resistant building of the present invention.

[0031] Figure 7 A graph showing the selection of observation points for structural displacement of an explosion-resistant building under load in the present invention.

[0032] Reference numerals

[0033] 1 explosion-resistant frame

[0034] 2 Explosion-proof panels

[0035] 3 Existing buildings

[0036] 4 Basics

[0037] 41 embedded plate

[0038] 42 cushion

[0039] 43 Isolation Board

[0040] 5 Wall columns

[0041] 6 Wall keels

[0042] 7 Roof beams

[0043] 8 Roof keel

[0044] 9 screws

[0045] S Gap between the explosion-resistant frame and the exterior of the existing building

[0046] B, L width and length of existing buildings

[0047] H Height of existing building

[0048] d Total thickness of explosion-proof plate and explosion-proof frame

[0049] e. Incisional angle DETAILED DESCRIPTION

[0050] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0051] Please refer to Figures 1 to Figure 7. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0052] The present invention provides a light-weight explosion-proof building, as shown in FIG1-2, comprising an explosion-proof frame 1 and an explosion-proof plate 2, wherein the explosion-proof frame 1 comprises wall components and roof components, specifically as shown in FIG1-2. Figure 1a 、 1b As shown in Figures 1c and 1d, the wall components include a plurality of wall columns 5 and wall keels 6, which are crisscrossed and connected with each other to form a wall with a mesh structure. The roof components include a plurality of roof beams 7 and roof keels 8, which are crisscrossed and connected with each other to form a roof with a mesh structure. The upper ends of the wall columns 5 are connected to the roof beams 7. Figure 2a 、 2b As shown, the explosion-proof panels 2 are fixed on the grid of the wall and / or roof.

[0053] The lightweight structure referred to in the lightweight explosion-proof building of the present invention specifically refers to a steel structure with light self-weight. Compared with traditional explosion-proof wall structures (reinforced concrete explosion-proof walls, reinforced masonry explosion-proof walls, etc.), this structure is called a lightweight structure because it uses steel materials and has light self-weight.

[0054] The present invention provides an explosion-proof building, such as Figure 2c As shown, in the use state, the explosion-proof frame 1 is placed outside the existing building 3, and a gap S is maintained between the explosion-proof frame 1 and the outer contour of the existing building 3.

[0055] The gap S between the above-mentioned explosion-proof frame 1 and the existing building 3 needs to take the maximum value by comprehensively considering multiple factors. The main factors to be considered include the outer contour of the existing building 3, the deformation of the explosion-proof frame 1 under explosion conditions and non-explosion conditions, the foundation and buried facilities of the existing building 3, the minimum construction space, etc.

[0056] In a preferred embodiment, the gap S is calculated according to formula (1), which is: S>MAX(a, b, c), where S is the gap between the explosion-proof frame 1 and the outer contour of the existing building 3; a is the maximum deformation of the explosion-proof frame 1 under explosion conditions; b is the maximum deformation of the explosion-proof frame 1 under non-explosion conditions; and c is the minimum gap determined by the maximum external dimensions of the existing building 3 and the minimum construction space.

[0057] Wherein, the above-mentioned a is calculated according to the national explosion-proof structure design code (such as GB 50779, etc.) and the unit is mm. The above-mentioned b is calculated according to the national structure design code (such as GB 50017, etc.) and the unit is mm.

[0058] The minimum clearance c, measured in mm, is determined by the maximum dimensions of the existing building 3 and the minimum construction space. This clearance c refers to the components that partially protrude from the walls and roof of the existing building 3, taking into account factors such as the maximum dimensions of the existing building 3 and the minimum construction space. This clearance c requires maintaining a certain distance from the outer contour of the existing building 3, while ensuring that the interior space enclosed by the wall and roof components of the explosion-proof frame 1 can accommodate the existing building 3. This distance takes into account the minimum construction distance of the explosion-proof frame 1 (including the construction distance between the above-ground portion of the explosion-proof frame 1 and the construction distance between the foundation of the explosion-proof frame 1 and the below-ground portion of the existing building 3). That is, the maximum dimensions of the existing building 3 are the outer contour of the existing building 3, and the minimum construction space is the minimum construction distance, which can be calculated according to the national explosion-proof structure design specifications.

[0059] The above-mentioned gap S meets the construction requirements and also ensures that the structure does not contact the existing building 3 when deformed under explosion conditions or non-explosion conditions, reflecting the design concept of replacing the existing building 3 to resist the explosion load.

[0060] In summary, the explosion-proof frame 1, through its wall and roof components, together forms the framework of this lightweight explosion-proof building, while the explosion-proof panels 2 serve as the walls and roof enclosure of the explosion-proof frame 1, thereby forming a relatively closed "shell" with a cavity inside. This "shell" is then "covered" on the outside of the existing building 3, replacing the existing building 3 in resisting the blast load. This ensures the independence of the explosion-proof building and creates no connection with the existing building 3. Because its structure is self-contained and independently resists blast loads, the entire explosion-proof building is completely disconnected from the existing building 3 and has no connection. After being "covered" on the outside of the existing building 3, the blast load on the existing building 3 can be ignored.

[0061] The present invention provides an explosion-proof building, wherein the wall components and roof components are made of steel. The explosion-proof frame 1 of the explosion-proof building adopts steel structure material, which is lighter in weight, has a shorter construction period, and is novel and beautiful compared to traditional reinforced concrete explosion-proof structures.

[0062] In the explosion-proof building provided by the present invention, the wall components and roof components are connected by welding between the wall columns 5 and the wall keels 6, the roof beams 7 and the roof keels 8, and the wall columns 5 and the roof beams 7, thereby ensuring effective connection between the components of the explosion-proof frame 1.

[0063] The present invention provides an explosion-proof building, such as Figure 4a As shown, the cut angle e between the explosion-proof plate 2 and the wall keel 6 is 40-50°, preferably 45°.

[0064] The present invention provides an explosion-proof building, wherein the wall components and roof components are as follows: Figure 4a As shown, the wall columns 5 and roof beams 7 are made of square steel. Figure 4b As shown, the wall keel 6 and the roof keel 8 are made of C-shaped steel.

[0065] In the explosion-proof building provided by the present invention, the wall columns 5 and the roof beams 7, the wall columns 5 and the wall keels 6, and the roof beams 7 and the roof keels 8 are perpendicular to each other.

[0066] In the explosion-proof building provided by the present invention, the wall keels 6 and the roof keels 8 are parallel to each other.

[0067] In the explosion-resistant building provided by the present invention, the cross-sectional size and arrangement spacing of each structural member are determined after calculation according to the size of the explosion load.

[0068] In a blast-resistant building provided by the present invention, the blast-resistant panels 2 are sequentially provided with a first steel plate layer, a fiber cement layer, and a second steel plate layer from the front blast surface to the rear blast surface. The blast-resistant panels 2 are fiber cement composite steel plates, which have a certain degree of explosion resistance. The first and second steel plate layers strongly compress the fiber cement layer from both sides. The fiber cement layer sandwiched between the two steel plates absorbs energy, and the overall structure provides fire protection.

[0069] In a preferred embodiment, the thickness ratio of the first steel plate layer, the fiber cement layer, and the second steel plate layer is 0.3-0.7:8.0-9.0:0.3-0.7, preferably 0.5:8.5:0.5.

[0070] In a preferred embodiment, the steel plates used for the first steel plate layer and the second steel plate layer are galvanized steel plates.

[0071] In a preferred embodiment, the fiber cement layer is made of fiber cement.

[0072] The explosion-proof panels 2 serve as the wall and roof enclosure structure of the explosion-proof frame, and are used to directly bear the explosion load, absorb part of the explosion shock wave energy through their own deformation, and transfer the explosion load to the explosion-proof frame 1.

[0073] In the explosion-proof building provided by the present invention, the size of the explosion-proof panels 2 can be cut according to actual needs during construction.

[0074] In a preferred embodiment, the standard plate shape of the explosion-proof panel 2 is 2400-2440×1200-1220×9.5 (length×width×thickness). Specifically, the standard plate shape of the explosion-proof panel 2 is 2400×1200×9.5 or 2440×1220×9.5 (length×width×thickness).

[0075] The present invention provides an explosion-proof building, such as Figure 3a As shown, punching holes are provided on the corners of the explosion-proof panel 2, and the explosion-proof panel 2 is bolted to the grid of the wall and / or roof through the punching holes.

[0076] In a preferred embodiment, Figure 3b 、 3c As shown, the screws 9 used in the bolt connection are hexagonal self-drilling screws.

[0077] The present invention provides an explosion-proof building, such as Figure 2a 、 5a As shown, a foundation 4 is provided at the bottom of the wall column. When in use, the wall column 5 is connected to the site foundation via the foundation 4. The foundation 4 is a reinforced concrete structure designed based on the site's subsoil conditions. It supports the explosion-resistant frame 1 and transfers various loads of the explosion-resistant structure to the foundation. The size of the foundation 4 is determined based on the reaction forces at the bottom of the explosion-resistant structure under both explosive and non-explosive conditions, as well as the local subsoil conditions.

[0078] In a preferred embodiment, Figure 5b As shown, the foundation 4 is a strip foundation.

[0079] In a preferred embodiment, Figure 5b As shown, the connection method between the wall column 5 and the foundation 4 is selected from one of welding the wall column 5 to the foundation 4 with a top embedded steel plate or bolting the wall column 5 to the foundation 4 with a top embedded foot.

[0080] In a preferred embodiment, Figure 5b As shown, the top of the foundation 4 is provided with an embedded plate 41 , the bottom of the foundation 4 is provided with a cushion layer 42 , and the explosion-proof building further includes an isolation plate 43 for isolating the foundation 4 from the existing building 3 .

[0081] Specifically, the embedded plate 41 is a steel plate with built-in anchor bars, and is used to be connected to the foundation 4 .

[0082] Specifically, the cushion layer 42 is a plain concrete layer, and the thickness of the cushion layer 42 is 80-120 mm, preferably 100 mm, to meet the construction and structural requirements of the foundation 4.

[0083] Specifically, if Figure 5b As shown, the isolation board 43 is an extruded polystyrene board, and the thickness of the isolation board 43 is 1-3 mm, preferably 2 mm, and is used to isolate the new and old foundations 2.

[0084] The overall design of this explosion-resistant building is similar to that of a steel structure. The analysis of its load-bearing capacity under non-explosive conditions is primarily based on current standards for standard steel structures, while the analysis of its load-bearing capacity under explosive conditions is primarily based on current standards for explosion-resistant structural design. In this case, the explosion-resistant building primarily bears the blast loads from the surrounding walls and roof. This overall design determines the layout and cross-sectional design of the various structural components of the explosion-resistant skeleton 1. The maximum spacing between the components of the explosion-resistant skeleton 1 is determined by the specifications of the explosion-resistant panels 2, ensuring an effective connection between the panels 2 and the explosion-resistant skeleton 1. If the calculated cross-sections of the components of the explosion-resistant skeleton 2 are too large, the components can be increased in size.

[0085] Example 1

[0086] The use process of an explosion-proof building in the present invention is as follows:

[0087] An explosion-proof frame 1 is installed outside an existing building 3. The explosion-proof frame 1 is constructed from wall components and roof components. The wall components are connected in a crisscross pattern by wall columns 5 and wall keels 6 to form a lattice-like wall structure. The roof components are connected in a crisscross pattern by roof beams 7 and roof keels 8 to form a lattice-like roof structure. The wall components and roof components are connected by wall columns 5 and roof beams 7. The wall components and roof components are made of steel. The connection between the wall columns 5 and wall keels 6, the roof beams 7 and roof keels 8, and the wall columns 5 and roof beams 7 is welded. The wall columns 5 and roof beams 7 are made of square steel, while the wall keels 6 and roof keels 8 are made of C-shaped steel.

[0088] Take the explosion-proof plate 2, which is a fiber cement composite steel plate. A first steel plate layer, a fiber cement layer, and a second steel plate layer are sequentially arranged along the explosion-facing surface to the back explosion surface. The steel plates used in the first and second steel plate layers are galvanized steel plates, and the material used in the fiber cement layer is fiber cement. The thickness ratio of the first steel plate layer, the fiber cement layer, and the second steel plate layer is 0.3-0.7:8.0-9.0:0.3-0.7, preferably 0.5:8.5:0.5.

[0089] The explosion-proof panel 2 is fixed to the grid of the wall and / or roof, that is, the explosion-proof panel 2 is bolted to the grid of the mesh structure of the wall and / or roof through punching holes, and the screws 9 used for the bolt connection are hexagonal self-drilling screws.

[0090] A foundation 4 is provided at the bottom of the wall column 5 of the wall component. The wall column 5 is connected to the site foundation via the foundation 4. The connection between the wall column 5 and the foundation 4 is selected from one of welding the wall column 5 to the foundation 4 with a pre-embedded steel plate at the top or bolting the wall column 5 to the foundation 4 with a pre-embedded footing at the top. An embedded plate 41 is provided at the top of the foundation 4, a cushion layer 42 is provided at the bottom of the foundation 4, and an isolation plate 43 is provided between the foundation 4 and the existing building 3. The embedded plate 41 is a steel plate with embedded anchor bars. The cushion layer 42 is a plain concrete layer with a thickness of 80-120 mm, preferably 100 mm. The isolation plate 43 is an extruded polystyrene board with a thickness of 1-3 mm, preferably 2 mm. This creates a lightweight, explosion-resistant building.

[0091] The explosion-proof building is placed outside the existing building 3, and a gap S is maintained between the explosion-proof frame 1 and the outer contour of the existing building 3. The gap is calculated according to formula (1), which is: S>MAX(a, b, c), wherein S is the gap between the explosion-proof frame 1 and the outer contour of the existing building 3; a is the maximum deformation of the explosion-proof frame 1 under explosion conditions; b is the maximum deformation of the explosion-proof frame 1 under non-explosion conditions; and c is the minimum gap determined by the maximum external dimensions of the existing building (3) and the minimum construction space.

[0092] Example 2

[0093] When an outdoor explosion occurs, the explosion-proof building constructed by Example 1 directly bears the impact of the explosion on the walls and roof. The explosion-proof panels 1 on the walls and roof absorb part of the energy and deform after being impacted by the explosion. The remaining energy is transferred to the explosion-proof frame 2 through the explosion-proof panels 1, and the explosion-proof frame 2 deforms accordingly. During this process, the stress and deformation of the explosion-proof panels 2 and the explosion-proof frame 1 meet the limit values ​​required by the explosion-proof specification, and the components still do not contact the existing buildings 3 after deformation. During the entire process, the existing buildings 3 do not directly bear the impact of the explosion. The above-mentioned explosion-proof building allows the structure to be in an inelastic state after the explosion without collapsing, and allows a certain degree of damage to occur, but it can still be used after repair.

[0094] Example 3

[0095] The explosion-proof building constructed according to Example 1 is as follows: Figure 6As shown, it "housings" the exterior of the existing building. The existing building has a length (L) of 16.5m, a width (B) of 7.7m, and a height (H) of 7.1m. The blast-resistant structure, on the other hand, has a length of 17m, a width of 9.8m, and a height of 7.55m. The total thickness of the blast-resistant frame and panels is 230mm, and the minimum clearance between the blast-resistant frame and the existing building is 250mm at all planes. The design shock wave incident overpressure is 61.1kPa, and the overpressure duration is 28.2ms.

[0096] After structural calculation and analysis, such as Figure 7 As shown, the maximum overall displacement of the blast-resistant building is 126.2mm, which is less than the 250mm minimum gap between the blast-resistant frame and the existing building. Furthermore, the rotation angles of each component after deformation are within the regulatory limits, and the maximum stresses of each component are within the allowable stress range of the material. This indicates that the blast-resistant building will not come into contact with the existing building after deformation, and the existing building is not damaged.

[0097] Therefore, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0098] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. An explosion-proof building, characterized in that: The invention comprises an explosion-proof frame (1) and an explosion-proof panel (2), wherein the explosion-proof frame (1) comprises a wall component and a roof component, wherein the wall component comprises a plurality of wall columns (5) and wall keels (6), wherein the wall columns (5) and the wall keels (6) are connected in a crisscross manner to form a wall with a mesh structure, wherein the roof component comprises a plurality of roof beams (7) and roof keels (8), wherein the roof beams (7) and the roof keels (8) are connected in a crisscross manner to form a roof with a mesh structure, wherein the upper ends of the wall columns (5) are connected to the roof beams (7), and the explosion-proof panel (2) is fixed to the mesh of the wall and / or the roof; The explosion-proof frame (1) is placed outside the existing building (3), and a gap S is maintained between the explosion-proof frame (1) and the outer contour of the existing building (3); The entire explosion-proof building is completely disconnected from the existing building (3) and has no connection; The gap is calculated according to Formula 1, which is: S>MAX(a, b, c), wherein S is the gap between the explosion-proof frame (1) and the outer contour of the existing building (3); a is the maximum deformation of the explosion-proof frame (1) under explosion conditions; b is the maximum deformation of the explosion-proof frame (1) under non-explosion conditions; and c is the minimum gap determined by the maximum external dimensions of the existing building (3) and the minimum construction space. A foundation (4) is provided at the bottom of the wall column (5); when in use, the wall column (5) is connected to the site foundation through the foundation (4); The top of the foundation (4) is provided with an embedded plate (41), the bottom of the foundation (4) is provided with a cushion layer (42), and the explosion-proof building further includes an isolation plate (43) for isolating the foundation (4) from the existing building (3).

2. The explosion-proof building according to claim 1, characterized in that: In the wall components and roof components, the wall columns (5) and roof beams (7) are made of square steel, and the wall keels (6) and roof keels (8) are made of C-shaped steel.

3. The explosion-proof building according to claim 1, characterized in that: The wall columns (5) and the roof beams (7), the wall columns (5) and the wall keels (6), and the roof beams (7) and the roof keels (8) are perpendicular to each other; and the wall keels (6) and the roof keels (8) are parallel to each other.

4. The explosion-resistant building according to claim 1, characterized in that: The explosion-proof plate (2) is provided with a first steel plate layer, a fiber cement layer, and a second steel plate layer in sequence from the explosion-facing surface to the back explosion surface, and the thickness ratio of the first steel plate layer, the fiber cement layer, and the second steel plate layer is 0.3-0.7:8.0-9.0:0.3-0.

7.

5. The explosion-resistant building according to claim 1, characterized in that: Punching holes are provided on the corners of the explosion-proof panel (2), and the explosion-proof panel (2) is bolted to the grid of the wall and / or roof through the punching holes.

6. The explosion-resistant building according to claim 1, characterized in that: The embedded plate (41) is a steel plate with built-in anchor bars; the cushion layer (42) is a plain concrete layer, and the thickness of the cushion layer (42) is 80-120 mm; the isolation plate (43) is an extruded polystyrene board, and the thickness of the isolation plate (43) is 1-3 mm.

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