CN107060457B - Explosion-proof wall - Google Patents
Explosion-proof wall Download PDFInfo
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- CN107060457B CN107060457B CN201710213432.4A CN201710213432A CN107060457B CN 107060457 B CN107060457 B CN 107060457B CN 201710213432 A CN201710213432 A CN 201710213432A CN 107060457 B CN107060457 B CN 107060457B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/04—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against air-raid or other war-like actions
- E04H9/10—Independent shelters; Arrangement of independent splinter-proof walls
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Abstract
The invention discloses an explosion-proof wall, which comprises at least one row of structural column layers and a ground anchoring device for fixing the structural column layers on the ground; the structural column layer is formed by uniformly arranging a plurality of structural column monomers at equal intervals. The explosion-proof wall can not generate fragments to damage personnel and structures behind the explosion-proof wall while increasing the protection grade of the personnel and the structures behind the wall; in addition, the blast wall not only meets the requirement of urban planning and beauty, but also can be applied to urban areas, has the advantages of simple and convenient processing, installation and removal, repeated explosion resistance and the like, can obviously save materials and construction cost, and is expected to be applied to other types of protective structures.
Description
Technical Field
The invention relates to the technical field of civil building explosion protection, in particular to an explosion-proof wall.
Background
Blast walls are an important structural form for protecting military facilities and important civil buildings from blast attacks, and the mainstream blast wall design relies mainly on structural strength, ductility and energy absorption to resist blast loads. Scholars at home and abroad make a great deal of research on the response and the explosion-proof effect of the explosion-proof wall under the explosion load. For example, Hulton and Gough propose steel-concrete-steel explosion-proof wall, which is composed of two steel plates separated by friction welding pins, the whole thickness can reach 210mm to 740mm, and concrete is filled inside to provide inertia resistance; based on a large number of experimental studies, Coyle and core et al give detailed design guidelines and design paradigms for steel-concrete-steel blast walls. With the development of new materials, more and more researchers are paying attention to the development of light explosion-proof walls or dissipating explosion energy by using energy-consuming materials, for example, Ye and Ma research explosion-proof technology of attaching a foam aluminum layer on the front surface of an explosion-proof wall, and research finds that the anti-explosion performance of a structure is greatly enhanced under the condition that the design of a foam additional layer is reasonable. However, studies have also found that the effectiveness of this technique depends on the rational design of the foam layer, the properties of the foam material and the characteristics of the blast load. The scholars also studied and developed temporary blast walls, such as Scherbatiuk and Rattanawangcharoen, which conducted explosion tests and numerical simulation of the soil-filled protection units; the effectiveness of the masonry-sand-masonry blast wall in resisting explosive load is researched by Rice and the like;
and the effectiveness of the aluminum plates filled with the sandstone in resisting explosive loads is researched.
Although various blast barriers having novel materials and novel structural forms have been developed in recent years, the design concept of the blast barriers is still mainly based on the conventional structural strength, ductility and energy absorption concepts. Blast walls designed reasonably based on these concepts can attenuate blast loads but have inherent disadvantages. For example, once the unbanded masonry blast wall and reinforced concrete blast wall are damaged by blast load, the generated fragments will pose a great threat to personnel and structures behind the blast wall. Steel-concrete-steel blast wall utilizes high strength steel and large mass filled concrete to resist blast load, the steel panel provides initial resistance to blast load and constrains the filled concrete, the filled concrete provides inertial resistance to blast load, such designs are often large in size and expensive in cost. On the other hand, the use of flexible materials such as foam to absorb the blast energy can make the blast wall light in weight and effective against blast loads; the properties of the foam are, however, very unstable and difficult to control, and the efficiency of the foam to absorb the explosive energy depends not only on the foam properties but also on its interaction with the explosive load. Meanwhile, since the explosion-proof wall absorbs explosion energy based on large plastic deformation of a structural material, the resistance against repeated explosive force is poor. These characteristics make it difficult to design foam into a blast wall that is efficient and economical. Furthermore, most blast-proof walls are bulky and unsuitable for construction in urban areas, in view of urban planning requirements and land constraints.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a novel explosion-proof wall suitable for urban areas, which has the advantages of attractive appearance, light structure, good explosion-proof protection effect and great material and construction cost saving.
The technical scheme adopted by the invention is as follows: an explosion-proof wall comprises at least one row of structural column layers and ground anchoring devices for fixing the structural column layers on the ground; the structural column layer is formed by uniformly arranging a plurality of structural column monomers at equal intervals.
The ground anchoring device is in a form of thread anchoring orifices fixed in the ground, and the thread anchoring orifices correspond to the structural column single bodies one by one; the lower end part of each structural column monomer is provided with a thread matched with the thread anchoring hole.
The ground anchoring device adopts a communication track in a geometric matrix form, and the communication track is composed of a plurality of track monomers which are intersected vertically and horizontally; the track single body is of a groove-shaped structure, and the upper end faces of the two flange plates are respectively provided with inward folded edges matched with the structural column single body.
The structure column is characterized in that a sleeve connected with the track single body is sleeved at the lower end of the structure column single body through a clamping groove, a bottom plate is arranged at the bottom of the sleeve, the lower end face of the bottom plate is located in a web plate of the track single body through a large roller, and the upper end face of the outer side of the bottom plate is in contact with an inward folded edge of the track single body through a small roller.
The lower end part of the structural column single body is connected with a gasket through a clamping groove, and the gasket is fixedly connected with an inward folded edge of the track single body through a bolt; the bottom surfaces of the structural column single bodies are located in the web plates of the rail single bodies through rollers.
The structural column layers are two or more rows, and the structural column monomers of the adjacent structural column layers are arranged in an axis righting mode.
The structural column layers are two or more rows, and the structural column monomers of the adjacent structural column layers are arranged in a mode of shaft center dislocation.
The structural column monomer adopts a solid column or a hollow sleeve with a circular, square, triangular or rhombic cross section.
The structural column layers are two or more rows, and the structural column monomers adjacent to the structural column layers adopt the structural column monomers with the same cross section form.
The structural column layer is two or more rows, and the structural column monomers adjacent to the structural column layer adopt structural column monomers with different cross-section forms.
The invention has the beneficial effects that: the explosion-proof wall can not generate fragments to damage personnel and structures behind the explosion-proof wall while increasing the protection grade of the personnel and the structures behind the wall; in addition, the blast wall not only meets the requirement of urban planning and beauty, but also can be applied to urban areas, has the advantages of simple and convenient processing, installation and removal, repeated explosion resistance and the like, can obviously save materials and construction cost, and is expected to be applied to other types of protective structures.
Drawings
FIG. 1: the technical scheme of the invention is a structural column monomer schematic diagram;
FIG. 2: according to the technical scheme, a schematic plan view of the arrangement of a ground anchoring device is shown;
FIG. 3: in the technical scheme of the invention, a schematic plan view of a connecting structure of a second structural column single body connected with a communicating track in a sleeve mode is shown;
FIG. 4: according to the technical scheme, a section schematic diagram of a connecting structure A-A is formed by connecting a second structural column monomer with a communicating track in a sleeve mode;
FIG. 5: in the technical scheme of the invention, a schematic plan view of a connecting structure of a second structural column single body connected with a communicating track in a bolt mode is shown;
FIG. 6: according to the technical scheme, a section schematic diagram of a connecting structure B-B is formed by connecting a second structural column monomer with a communicating track in a bolt mode;
FIG. 7: a schematic side view of an embodiment of the invention;
FIG. 8: a schematic top view of an embodiment of the present invention.
The attached drawings are marked as follows: 1-structural column monomer; 2-thread; 3-a threaded anchoring orifice; 4-orbital monomer; 5-folding the edges inwards; 6-a sleeve; 7-hinging; 8-small rollers; 9-large roller; 10-a gasket; 11-a bolt; 12-a roller; 13-a building; 14-a sensor; TNT-explosive.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Technical scheme one
As shown in fig. 1 and 2, a blast wall comprises at least one row of structural columns and ground anchoring means for securing the structural columns to the ground.
The structural column layer is formed by uniformly arranging a plurality of structural column monomers 1 at equal intervals, the lower end part of each structural column monomer 1 is provided with a thread 2 matched with a thread anchoring hole opening 3, and the length of the thread 2 is determined according to the anchoring depth required by design. The structural column single body 1 is a solid column or a hollow sleeve, the solid column or the hollow sleeve is made of high-strength metal or alloy material, and carbon fiber reinforcement can be adopted according to requirements; when the structural column single body 1 adopts a hollow sleeve, the sleeve can be filled with materials such as cement, mortar, concrete, fiber reinforced concrete and the like. The cross section geometric form of the structural column single body 1 is not limited, and can be convex geometry such as round, square, triangle, rhombus and the like, and can also be irregular concave geometry; the cross section size of the structural column monomer 1 is 10 mm-500 mm, and the height of the structural column monomer is 1 m-10 m.
When the structural column layers are two or more rows, the structural column monomers 1 of the adjacent structural column layers are arranged in an axis normal position mode or in an axis dislocation mode; and the structural column single bodies 1 adjacent to the structural column layer adopt the structural column single bodies 1 with the same cross section form, or adopt the structural column single bodies 1 with different cross section forms. The front-back sequence, the angle and the like of the column layers with different structures can be adjusted according to design requirements such as explosion-proof effect and urban planning artistic effect.
The ground anchoring device is in the form of threaded anchoring orifices 3 fixed in the ground, and the threaded anchoring orifices 3 correspond to the structural column single bodies 1 one by one. When the building is installed, a plurality of rows of threaded anchoring orifices 3 are formed on the ground at a proper distance (1 m-50 m) on the periphery of a building 13 with protection requirements, and the number of rows in the longitudinal direction and the transverse direction is 1-50; the diameter range of the thread anchoring orifices 3 is 10 mm-500 mm, the distance between the thread anchoring orifices 3 in the same row is 10 mm-500 mm, the distance between the thread anchoring orifices 3 in the adjacent row is 10 mm-500 mm (namely, the distance between the rows of the structural column layers), and the row number is 1-50; the anchoring depth is designed according to the geometric dimension of the structural column single body 1 and is generally more than 50 mm.
Technical scheme two
As shown in fig. 3 to 6, a blast wall comprises at least one row of structural column layers and ground anchoring means for fixing the structural column layers to the ground.
The structure column layer is composed of a plurality of structure column single bodies 1 which are uniformly arranged at equal intervals, and the lower end part of each structure column single body 1 is provided with a clamping groove matched with the following communication track and is fixed on the following communication guide rail in a sleeve mode or a bolt mode. The structural column single body 1 is a solid column or a hollow sleeve, the solid column or the hollow sleeve is made of high-strength metal or alloy material, and carbon fiber reinforcement can be adopted according to requirements; when the structural column single body 1 adopts a hollow sleeve, the sleeve can be filled with materials such as cement, mortar, concrete, fiber reinforced concrete and the like. The cross section geometric form of the structural column single body 1 is not limited, and can be convex geometry such as round, square, triangle, rhombus and the like, and can also be irregular concave geometry; the cross section size of the structural column monomer 1 is 10 mm-500 mm, and the height of the structural column monomer is 1 m-10 m.
When the structural column layers are two or more rows, the structural column monomers 1 of the adjacent structural column layers are arranged in an axis normal position mode or in an axis dislocation mode; and the structural column single bodies 1 adjacent to the structural column layer adopt the structural column single bodies 1 with the same cross section form, or adopt the structural column single bodies 1 with different cross section forms. The front-back sequence, the angle and the like of the column layers with different structures can be adjusted according to design requirements such as explosion-proof effect and urban planning artistic effect.
The ground anchoring device adopts a communication track in a geometric matrix form, and the communication track is composed of a plurality of track single bodies 4 which are intersected vertically and horizontally; the track single body 4 is of a groove-shaped structure, and the upper end faces of two flange plates of the track single body are respectively provided with an inward folded edge 5 matched with the structural column single body. When the structural column single body 1 is fixed on the communicating guide rail in a sleeve manner, as shown in fig. 3 and 4, a sleeve 6 connected with the rail single body 4 is sleeved at the lower end part of the structural column single body 1 through a clamping groove, the sleeve 6 is formed by mutually connecting two semi-cylinders through hinges 7, a bottom plate is arranged at the bottom of the sleeve 6, the lower end face of the bottom plate is located in a web plate of the rail single body 4 through a large roller 9, and the upper end face of the outer side of the bottom plate is in contact with an inward folded edge 5 of the rail single body 4 through a small roller 8; the structural column single body 1 can move in the communication track through small rollers 8 and large rollers 9 on the upper end surface and the lower end surface of the bottom plate of the sleeve 6. When the structural column single body 1 is fixed on the communicating guide rail in a bolt manner, as shown in fig. 5 and 6, the lower end part of the structural column single body is connected with a gasket 10 through a clamping groove, and the gasket 10 is fixedly connected with an inward folded edge 5 of the track single body 4 through a bolt 11; the bottom surface of the structural column single body is located in the web of the track single body 4 through a roller 12 and can move in the communication track. When the communication tracks are installed, the communication tracks in the form of a geometric matrix are built on the ground at a proper distance (1m to 50m) on the periphery of a building 13 with protection requirement, the specific plane configuration of the communication tracks depends on the outer edge geometric form of the building 13 to be protected, the longitudinal and transverse spacing of the communication tracks is 10mm to 500mm, and the number of longitudinal and transverse track units 4 is 1 to 50.
In order to clearly describe the objects and effects of the present invention, the present invention will be further described with reference to specific examples.
Example 1:
1. as shown in the attached fig. 3 and 4, a plurality of structural column single bodies 1 with circular cross sections are fixed on the ground to construct a single-row blast wall, the height of the structural column single bodies 1 is 1m, the cross section diameter is 20mm, and the distance is 10 mm;
2. as shown in fig. 3 and 4, 1kg of explosive TNT is placed on one side of the explosion-proof wall, four pressure sensors 14 are arranged at the position of the other side at a vertical distance of 1m, the distance between each sensor 14 and the ground is 0.25m, and the distance between the sensors 14 is 1m, and the sensors are used for recording the overpressure value of the explosion wave passing through the explosion-proof wall; a pressure sensor 14 is arranged in the free field, 0.25m from the ground, for recording the overpressure value of the explosion wave propagating in the free field.
3. The explosives are detonated, the data collected by the sensors 14 are recorded, the blast load attenuation effect of the blast wall of the invention relative to the free field propagation condition of the blast wave is analyzed and compared, and the performance measurement is shown in table 1.
TABLE 1 EXPLOSION-PROOF WALL PERFORMANCE TEST METER OF THE INVENTION (EXAMPLE 1)
| Proportional distance (m/kg)1/3) | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 |
| Overpressure (kPa) | 138 | 97 | 73 | 57 | 47 | 39 | 33 | 28 | 25 | 22 |
| Impulse (kPa, ms) | 77 | 71 | 66 | 62 | 58 | 55 | 52 | 49 | 47 | 45 |
| Overpressure reduction ratio | 51％ | 43％ | 37％ | 32％ | 28％ | 26％ | 24％ | 23％ | 22％ | 22％ |
| Impulse reduction ratio | 43％ | 35％ | 29％ | 24％ | 19％ | 16％ | 12％ | 9％ | 6％ | 4％ |
*Based on the free field test result
Example 2:
fixing a plurality of isosceles right triangle section structural column single bodies 1 on the ground, wherein the right angle corresponds to an explosion-facing surface, and constructing a single-row explosion-proof wall, wherein the height of each structural column single body 1 is 1m, the side length of the bottom edge is 20mm, and the distance between the bottom edge and the bottom edge is 10 mm; the other steps are the same as example 1, and the implementation effect is shown in table 2.
Table 2 explosion-proof wall performance test meter of the invention (example 2)
*Based on the free field test result
Example 3:
fixing a plurality of circular cross-section structural column single bodies 1 on the ground to construct a double-row explosion-proof wall, wherein the height of each structural column single body 1 is 1m, the cross-sectional diameter is 20mm, the interval is 10mm, the column row interval is 20mm, and the axes of the structural column single bodies 1 on the front row and the rear row of structural column layers are arranged in a positive position; the other steps are the same as example 1, and the implementation effect is shown in table 3.
TABLE 3 EXPLOSION-PROOF WALL PERFORMANCE TEST METER OF THE INVENTION (EXAMPLE 3)
| Proportional distance (m/kg)1/3) | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 |
| Overpressure (kPa) | 94 | 71 | 56 | 46 | 39 | 34 | 30 | 26 | 23 | 21 |
| Impulse (kPa, ms) | 51 | 50 | 49 | 48 | 48 | 47 | 47 | 46 | 46 | 45 |
| Overpressure reduction ratio | 67％ | 59％ | 51％ | 45％ | 40％ | 35％ | 32％ | 29％ | 26％ | 24％ |
| Impulse reduction ratio | 62％ | 54％ | 47％ | 40％ | 34％ | 28％ | 21％ | 15％ | 9％ | 3％ |
*Based on the free field test result
Example 4:
fixing a plurality of circular cross-section structural column single bodies 1 on the ground to construct a double-row explosion-proof wall, wherein the height of each structural column single body 1 is 1m, the cross-sectional diameter is 20mm, the interval is 10mm, the column row interval is 20mm, and the axes of the structural column single bodies 1 on the front row and the rear row of structural column layers are staggered by 15 mm; the other steps are the same as example 1, and the implementation effect is shown in table 4.
Table 4 blast wall performance test meter of the invention (example 4)
*Based on the free field test result
Example 5:
fixing a plurality of isosceles right triangle section structural column single bodies 1 on the ground, wherein the right angle corresponds to an explosion-facing surface, constructing a double-row explosion-proof wall, wherein the height of the structural column single bodies 1 is 1m, the side length of the bottom edge is 20mm, the distance is 10mm, the column row distance is 20mm, and the axes of the structural column single bodies 1 on the front and rear row structural column layers are arranged in an upright position; the other steps are the same as example 1, and the implementation effect is shown in table 5.
TABLE 5 EXPLOSION-PROOF WALL PERFORMANCE TEST METER OF THE INVENTION (EXAMPLE 5)
| Proportional distance (m/kg)1/3) | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 |
| Overpressure (kPa) | 124 | 86 | 64 | 50 | 40 | 33 | 28 | 24 | 21 | 18 |
| Impulse (kPa, ms) | 84 | 70 | 61 | 54 | 48 | 44 | 41 | 38 | 35 | 33 |
| Overpressure reduction ratio | 56％ | 50％ | 44％ | 41％ | 38％ | 36％ | 35％ | 35％ | 34％ | 35％ |
| Impulse reduction ratio | 37％ | 35％ | 34％ | 33％ | 33％ | 32％ | 32％ | 31％ | 30％ | 30％ |
*Based on the free field test result
Example 6:
fixing a plurality of isosceles right triangle section structural column single bodies 1 on the ground, wherein the right angle corresponds to an explosion-facing surface, constructing a double-row explosion-proof wall, the height of the structural column single bodies 1 is 1m, the side length of the bottom edge is 20mm, the distance is 10mm, the column row distance is 20mm, and the axes of the structural column single bodies 1 on the front row of structural column layer and the rear row of structural column layer are staggered by 15 mm; the other steps are the same as example 1, and the implementation effect is shown in table 6.
Table 6 blast wall performance test meter of the invention (example 6)
*Based on the free field test result
Example 7:
fixing a plurality of circular section structural column single bodies 1 and a plurality of isosceles right triangle section structural column single bodies 1 on the ground, wherein the right angle corresponds to an explosion-facing surface, and constructing a double-row explosion-proof wall, wherein the height of each structural column single body 1 is 1m, the diameter of a circle is 20mm, the length of the bottom side of each isosceles right triangle is 20mm, the distance is 10mm, the column row distance is 20mm, the circular section structural column layer is arranged in front, the isosceles right triangle section structural column layer is arranged behind, and the axes of the structural column single bodies 1 of the front and rear row structural column layers are arranged in an orthostatic manner; the other steps are the same as example 1, and the effects are shown in Table 7.
TABLE 7 EXPLOSION-PROOF WALL PERFORMANCE TEST METER OF THE INVENTION (EXAMPLE 7)
| Proportional distance (m/kg)1/3) | 3 | 3.5 | 4 | 4.5 | 5 | 5.3 |
| Overpressure (kPa) | 59 | 47 | 38 | 31 | 27 | 24 |
| Impulse (kPa, ms) | 63 | 59 | 54 | 50 | 45 | 42 |
| Overpressure reduction ratio | 49％ | 45％ | 42％ | 40％ | 38％ | 38％ |
| Impulse reduction ratio | 31％ | 27％ | 25％ | 23％ | 24％ | 25％ |
*Based on the free field test result
Example 8:
fixing a plurality of circular section structural column single bodies 1 and a plurality of isosceles right triangle section structural column single bodies 1 on the ground, wherein the right angle corresponds to an explosion-facing surface, and constructing a double-row explosion-proof wall, wherein the height of each structural column single body 1 is 1m, the diameter of a circle is 20mm, the length of the bottom side of each isosceles right triangle is 20mm, the distance between the bottom sides of the isosceles right triangles is 10mm, the distance between column rows is 20mm, the circular section structural column layer is arranged in front, the isosceles right triangle section structural column layer is arranged behind, and the axes of the structural column single bodies 1 of the front and rear row structural column layers are; the other steps are the same as example 1, and the effects are shown in Table 8.
Table 8 blast wall performance test meter of the invention (example 8)
*Based on the free field test result
Example 9:
fixing a plurality of circular section structural column single bodies 1 and a plurality of isosceles right triangle section structural column single bodies 1 on the ground, wherein the right angle corresponds to an explosion-facing surface, and constructing a double-row explosion-proof wall, wherein the height of each structural column single body 1 is 1m, the diameter of a circle is 20mm, the length of the bottom side of each isosceles right triangle is 20mm, the distance is 10mm, the distance of column rows is 20mm, the isosceles right triangle section structural column layers are arranged in front, the circular section structural column layers are arranged behind, and the axes of the structural column single bodies 1 of the front and rear row structural column layers are arranged in an orthostatic manner; the other steps are the same as example 1, and the effects are shown in Table 9.
TABLE 9 EXPLOSION-PROOF WALL PERFORMANCE TEST METER OF THE INVENTION (EXAMPLE 9)
| Proportional distance (m/kg)1/3) | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 |
| Overpressure (kPa) | 176 | 115 | 82 | 61 | 48 | 38 | 31 | 26 | 22 | 19 |
| Impulse (kPa, ms) | 98 | 86 | 75 | 65 | 57 | 49 | 43 | 38 | 33 | 29 |
| Overpressure reduction ratio | 38％ | 33％ | 29％ | 27％ | 27％ | 27％ | 28％ | 29％ | 30％ | 32％ |
| Impulse reduction ratio | 27％ | 21％ | 19％ | 20％ | 21％ | 24％ | 27％ | 31％ | 35％ | 39％ |
*Based on the free field test result
Example 10:
fixing a plurality of circular section structural column single bodies 1 and a plurality of isosceles right triangle section structural column single bodies 1 on the ground, wherein the right angle corresponds to an explosion-facing surface, and constructing a double-row explosion-proof wall, wherein the height of each structural column single body 1 is 1m, the diameter of a circle is 20mm, the length of the bottom side of each isosceles right triangle is 20mm, the distance between the bottom sides of the isosceles right triangles is 10mm, the distance between column rows is 20mm, the isosceles right triangle section structural column layers are arranged in front, the circular section structural column layers are arranged behind, and the axes of the structural column single bodies 1 of the front and rear row structural column layers are; the other steps are the same as example 1, and the effects are shown in Table 10.
Table 10 explosion-proof wall performance test meter of the invention (example 10)
| Proportional distance (m/kg)1/3) | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 |
| Overpressure (kPa) | 52 | 47 | 42 | 37 | 32 | 28 | 24 | 21 | 18 | 15 |
| Impulse (kPa, ms) | 39 | 38 | 37 | 35 | 34 | 32 | 30 | 29 | 26 | 24 |
| Overpressure reduction ratio | 82％ | 73％ | 64％ | 56％ | 50％ | 46％ | 43％ | 43％ | 43％ | 46％ |
| Impulse reduction ratio | 71％ | 65％ | 60％ | 56％ | 53％ | 50％ | 49％ | 47％ | 47％ | 48％ |
*Based on the free field test results.
Claims (9)
1. An explosion-proof wall is arranged at a certain distance outside a building to be protected and is characterized by comprising at least one row of structural column layers, wherein the structural column layers are formed by uniformly arranging a plurality of mutually independent structural column monomers at equal intervals, the lower ends of the structural column layers are movably fixed on the ground through ground anchoring devices, the ground anchoring devices adopt communication tracks in a geometric matrix form, each communication track is formed by a plurality of track monomers which are intersected vertically and horizontally, and the vertical and horizontal intervals of the communication tracks are 10-500 mm; the track single body is of a groove-shaped structure, and the upper end faces of the two flange plates are respectively provided with inward folded edges matched with the structural column single body.
2. The blast wall according to claim 1, wherein said ground anchoring means for removably fixing said structural column layer to the ground is replaced with ground anchoring means for removably fixing said structural column layer to the ground, said ground anchoring means for removably fixing said structural column layer to the ground being in the form of threaded anchoring openings fixed to the ground, said threaded anchoring openings and said structural column units being in one-to-one correspondence, said threaded anchoring openings being spaced at intervals of 10mm to 500 mm; the lower end part of each structural column monomer is provided with a thread matched with the thread anchoring hole.
3. The blast wall according to claim 1, wherein a sleeve connected with the rail single body is sleeved at the lower end part of the structural column single body through a clamping groove, a bottom plate is arranged at the bottom of the sleeve, the lower end face of the bottom plate is located in a web plate of the rail single body through a large roller, and the outer upper end face of the bottom plate is in contact with an inward folded edge of the rail single body through a small roller.
4. The blast wall according to claim 1, wherein the lower end of the structural column single body is connected with a gasket through a clamping groove, and the gasket is fixedly connected with an inward folded edge of the rail single body through a bolt; the bottom surfaces of the structural column single bodies are located in the web plates of the rail single bodies through rollers.
5. The blast wall according to any one of claims 1 to 4, wherein the number of the structural column layers is more than two, and the structural column monomers of the adjacent structural column layers are arranged in an axial center normal position.
6. The blast wall according to any one of claims 1 to 4, wherein the number of the structural column layers is more than two, and the structural column monomers of the adjacent structural column layers are arranged in a mode of staggered axis.
7. The blast wall according to any one of claims 1 to 4, wherein said structural column unit is a solid column or hollow sleeve having a cross-sectional form of a circle, square, triangle or diamond.
8. The blast wall according to any one of claims 1 to 4, wherein the structural column layers are more than two rows, and the structural column single bodies of the adjacent structural column layers adopt the structural column single bodies with the same cross section form.
9. The blast wall according to any one of claims 1 to 4, wherein the number of the structural column layers is two or more, and the structural column single bodies of the adjacent structural column layers adopt structural column single bodies with different cross-sectional forms.
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| CN201710213432.4A CN107060457B (en) | 2017-04-01 | 2017-04-01 | Explosion-proof wall |
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| CN201710213432.4A CN107060457B (en) | 2017-04-01 | 2017-04-01 | Explosion-proof wall |
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| CN107060457A CN107060457A (en) | 2017-08-18 |
| CN107060457B true CN107060457B (en) | 2020-09-08 |
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| CN201710213432.4A Expired - Fee Related CN107060457B (en) | 2017-04-01 | 2017-04-01 | Explosion-proof wall |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5653062A (en) * | 1995-11-01 | 1997-08-05 | Shustov; Valentin | Blast protective structural system |
| CN201155156Y (en) * | 2007-10-16 | 2008-11-26 | 孙图清 | Explosion-proof assembled wall |
| CN103174240A (en) * | 2013-04-07 | 2013-06-26 | 国家电网公司 | Combined type fireproof explosion prevention partition |
| CN203423470U (en) * | 2013-08-08 | 2014-02-05 | 上海电力设计院有限公司 | Explosion-proof device for cable terminal station |
| WO2015047481A1 (en) * | 2013-09-25 | 2015-04-02 | Ardenx Llc | Freestanding force protection system |
| CN205063100U (en) * | 2015-11-03 | 2016-03-02 | 新疆电力工程监理有限责任公司 | Prevent hot wall and prevent hot wall system |
| CN106368489A (en) * | 2016-10-19 | 2017-02-01 | 中国能源建设集团云南省电力设计院有限公司 | Explosion fire protection wall for main transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485565A (en) * | 2013-08-05 | 2014-01-01 | 王振牛 | Innovative technical scheme for prefabricated/assembled sea-surface multipurpose base |
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2017
- 2017-04-01 CN CN201710213432.4A patent/CN107060457B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5653062A (en) * | 1995-11-01 | 1997-08-05 | Shustov; Valentin | Blast protective structural system |
| CN201155156Y (en) * | 2007-10-16 | 2008-11-26 | 孙图清 | Explosion-proof assembled wall |
| CN103174240A (en) * | 2013-04-07 | 2013-06-26 | 国家电网公司 | Combined type fireproof explosion prevention partition |
| CN203423470U (en) * | 2013-08-08 | 2014-02-05 | 上海电力设计院有限公司 | Explosion-proof device for cable terminal station |
| WO2015047481A1 (en) * | 2013-09-25 | 2015-04-02 | Ardenx Llc | Freestanding force protection system |
| CN205063100U (en) * | 2015-11-03 | 2016-03-02 | 新疆电力工程监理有限责任公司 | Prevent hot wall and prevent hot wall system |
| CN106368489A (en) * | 2016-10-19 | 2017-02-01 | 中国能源建设集团云南省电力设计院有限公司 | Explosion fire protection wall for main transformer |
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| CN107060457A (en) | 2017-08-18 |
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