CN111021566A

CN111021566A - Masonry antiknock structure

Info

Publication number: CN111021566A
Application number: CN201911242542.9A
Authority: CN
Inventors: 徐世林; 韦建树; 韦广兵
Original assignee: Shanghai Juege Industrial Engineering Co Ltd
Current assignee: Shanghai Juege Industrial Engineering Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-04-17

Abstract

The invention provides an anti-explosion structure of a masonry, which comprises the masonry and a bearing member for bearing the masonry, wherein anti-explosion coatings are coated on the surface of the masonry and a connecting edge interface of the bearing member and the masonry, and the surface of the masonry is selected from any one surface or two surfaces of a back explosion surface or an explosion surface. The masonry antiknock structure provided by the invention can absorb shock wave energy when explosion occurs, enhances the integrity of a wall body, reduces the expansion of wall body cracks, reduces the possibility of wall body collapse, avoids secondary damage caused by throwing fragments such as bricks into a room, has a simple reinforcing process, is convenient to construct, has a short construction period, has small influence on normal production, and overcomes the defects of the existing masonry infilled wall antiknock reinforcing technology.

Description

Masonry antiknock structure

Technical Field

The invention belongs to the technical field of building structures, and relates to a masonry anti-explosion structure.

Background

Petrochemical industry and the like relate to the industry of inflammable and explosive gases, and have explosion risks, which cause equipment damage or personal casualties. Whether existing buildings or newly built buildings need to consider the capability of the buildings to resist explosion shock waves. Firstly, the main structure is complete under the action of the explosive shock wave, and the main structure cannot be damaged or continuously collapsed. And secondly, the masonry infilled wall cannot collapse or fragments splash to cause casualties and huge property loss under the action of the blast shock waves. At present, in most cases, casualties or equipment damage is caused by collapse of brickwork and the like or flying of fragments. Therefore, under the condition of ensuring that the strength of the main structure meets the requirement, the collapse of the masonry infilled wall of the building or the splashing of masonry fragments is avoided, the escape time of indoor personnel is prolonged, and the anti-explosion reinforcement of the masonry infilled wall is very important.

The masonry infilled wall reinforcing method is widely applied to the methods of plastering cement mortar after hanging a reinforcing mesh, additionally arranging constructional columns and ring beams, beating reinforced concrete sheets by attaching walls on two sides and the like, has relatively high rigidity and little energy for absorbing shock waves, is complex in process, has long construction time, has great influence on normal production, and is difficult to meet the requirement of anti-explosion reinforcement of the masonry infilled wall during continuous production.

Disclosure of Invention

In view of the above disadvantages of the prior art, an object of the present invention is to provide an anti-explosion masonry structure, which is used to solve the problems of complex construction, poor actual anti-explosion reinforcement effect, and less shock wave energy absorption of the anti-explosion masonry structure in the prior art.

In order to achieve the above and other related objects, the present invention provides an antiknock structure for masonry, including masonry and a load-bearing member for bearing the masonry, wherein an antiknock coating is coated on a surface of the masonry and an interface of a connecting edge of the load-bearing member and the masonry, and the surface of the masonry is selected from either or both of a back-blast surface and a front-blast surface.

Preferably, the masonry is masonry infill wall.

Preferably, the load bearing member is a concrete frame member. More preferably, the concrete frame member is a beam, a column or a floor of the concrete frame.

Preferably, a finishing paint layer is arranged on the exposed surface of the anti-explosion coating.

More preferably, the top coat used in the top coat layer is a paint. Further preferably, the finishing paint used in the finishing paint layer is selected from any one or more of latex paint, polyurethane finishing paint and acrylic polyurethane.

Preferably, a first primer layer is arranged between the anti-explosion coating and the surface of the masonry, and a second primer layer is arranged between the anti-explosion coating and the connecting boundary surface.

More preferably, a mortar leveling layer is arranged between the first primer layer and the surface of the masonry.

Preferably, the antiknock coating used in the antiknock coating is a high polymer material with elastic plasticity. More preferably, the antiknock coating used in the antiknock coating is selected from any one or more of polyurea, polyurea polyurethane and polyurethane.

Preferably, the thickness of the antiknock coating is 2-30 mm.

Preferably, the antiknock coating is secured to the load bearing member via a fastening member.

More preferably, the fastening component comprises a pressing piece and a connecting piece, the pressing piece is positioned on the connecting boundary surface of the bearing member and the masonry to press the anti-explosion coating, and the connecting piece penetrates through the pressing piece and the anti-explosion coating in sequence and then is fixed in the bearing member to fasten the anti-explosion coating.

Further preferably, the connecting piece penetrates through the pressing piece, the finish paint layer, the anti-explosion coating and the second primer layer in sequence and then is fixed in the bearing component.

Further preferably, a third primer layer is arranged between the pressing piece and the finish paint layer.

Still further preferably, the primer used in the first, second and third primer layers is a material having adhesion.

Most preferably, the primer used in the first primer layer, the second primer layer and the third primer layer is selected from any one or more of epoxy resin and polyurethane.

Further preferably, the pressing piece is selected from one of angle iron or steel plate pressing strips.

Further preferably, the connecting member is selected from one of a bolt or an anchor bolt.

Still further preferably, the bolt is an expansion bolt.

Still further preferably, the anchor is a chemical anchor.

As mentioned above, the masonry antiknock structure provided by the invention reinforces the sprayed antiknock coating of the masonry infill wall, when the masonry infill wall is exploded, the masonry infill wall can hold bricks which fly at a high speed, the kinetic energy of the masonry is converted into the deformation energy of the coating, the secondary damage caused by throwing the bricks into a room is avoided, and meanwhile, the antiknock coating is sprayed on the back explosion surface or the front explosion surface of the brick wall, so that the integrity of the wall is enhanced, the crack expansion of the wall is hindered, and the possibility of the wall collapsing is reduced. This kind of brickwork antiknock structure, accessible self adhesion fixes, does and strengthens the fixed to antiknock coating through setting up fastening part, and its reinforcement simple process, construction convenience, construction cycle is short, and is less to normal production influence, has compensatied the not enough of current brickwork infilled wall antiknock reinforcement technique.

Drawings

Fig. 1 is a schematic view illustrating the reinforcement of the horizontal masonry antiknock structure according to the present invention.

Fig. 2 is a schematic view showing the reinforcement of the masonry antiknock structure in the wall height direction according to the present invention.

Fig. 3 is a partial view a of the masonry blast resistant structure of fig. 1 in accordance with the present invention.

Fig. 4 is a partial view B of the masonry antiknock structure of fig. 1 in accordance with the present invention.

Reference numerals

1 masonry

2 bearing member

3 antiknock coating

4 fastening parts

41 pressing piece

42 connecting piece

5 mortar leveling layer

61 first primer layer

62 second primer layer

63 third primer layer

7 finishing coat

A back explosion surface

B explosion-facing surface

C connection boundary surface

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 4. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

As shown in fig. 1-4, the invention provides a masonry antiknock structure, which comprises masonry 1 and a bearing member 2 for bearing the masonry 1, wherein an antiknock coating 3 is coated on the surface of the masonry 1 and the connecting edge interface C of the bearing member 2 and the masonry 1, and the surface of the masonry 1 is selected from any one surface or two surfaces of a back explosion surface a or an explosion surface B.

In one embodiment, as shown in fig. 1-2, the masonry 1 is a masonry infill wall.

In a particular embodiment, the load bearing member 2 is a concrete frame member. In particular, the concrete frame member is a beam, a column or a floor of the concrete frame. The load bearing member 2 can effectively bear and support the masonry 1.

In a preferred embodiment, as shown in fig. 1, 2, 3 and 4, the exposed surface of the antiknock coating 3 is provided with a finish paint layer 7. The finish paint layer 7 can prevent the surface of the anti-explosion coating 3 from being oxidized, or absorb ultraviolet rays or heat radiation, and meanwhile, the appearance beautifying effect is achieved.

In a preferred embodiment, as shown in fig. 1, 2, 3 and 4, a first primer layer 61 is arranged between the antiknock coating 3 and the surface of the masonry 1, and a second primer layer 62 is arranged between the antiknock coating 3 and the joint edge interface C as shown in fig. 4. The first primer layer 61 can prevent moisture in the masonry 1 or the mortar layer 5 from seeping out, and the adhesion of the anti-explosion coating 3 is improved. The second primer layer 62 prevents moisture from seeping out of the load-bearing member 2, and improves the adhesion of the antiknock coating 3.

The connecting edge interface C of the load-bearing member 2 and the masonry 1 is an extension surface of the connecting edge of the self-load-bearing member 2 and the masonry 1 coated with the antiknock coating 3 and on the surface of the load-bearing member 2. In order to enable the connecting edge interface C of the load bearing member 2 and the masonry 1 to be coated with an anti-detonation coating, the anti-detonation coating 3 extends from the connecting edge interface C further along the surface of the load bearing member 2 by a suitable width. The width of the extension may be above 1 cm.

In a further preferred embodiment, as shown in fig. 4, a mortar leveling layer 5 is provided between the first primer layer 61 and the surface of the masonry 1. Mortar screed-coat 5 whitewash in 1 surface of brickwork, it makes 1 surface thickness of brickwork more even, and the outward appearance is more level and more smooth.

In a specific embodiment, the anti-explosion coating used in the anti-explosion coating 3 is a polymer material having elastic and plastic properties. Specifically, the antiknock coating used in the antiknock coating 3 is selected from any one or more of polyurea, polyurea polyurethane and polyurethane. The anti-explosion coating used in the anti-explosion coating 3 has adhesive force and can be firmly adhered to finish paint and primer.

In a specific embodiment, the topcoat used in the topcoat layer 7 described above is a paint. Specifically, the finishing paint used in the finishing paint layer 7 is selected from any one or more of latex paint, polyurethane finishing paint and acrylic polyurethane. Can be used for decoration, ultraviolet ray absorption or heat radiation, etc. The finish paint used in the finish paint layer 7 has adhesion and can be firmly adhered to the anti-explosion paint used in the anti-explosion coating 3.

In a particular embodiment, the material used in the above-described screed 5 is mortar. The mortar can level the surface of the masonry.

In a preferred embodiment, the thickness of the antiknock coating 3 is 2 to 30 mm. When the anti-explosion coating 3 is sprayed, the anti-explosion coating should be uniformly sprayed, so that the phenomenon that the weak part is torn due to the non-uniform distribution of the anti-explosion coating 3 is avoided.

In a particular embodiment, as shown in fig. 1, 2 and 4, the antiknock coating 3 is fixed to the load-bearing member 2 via fastening means 4. And determining according to the load of the explosion shock wave.

In a specific embodiment, as shown in fig. 1, 2 and 4, the fastening component 4 comprises a pressing component 41 and a connecting component 42, the pressing component 41 is located on the connecting edge interface C of the load bearing member 2 and the masonry 1 to press the anti-explosion coating 3, and the connecting component 42 is sequentially fixed in the load bearing member 2 after penetrating through the pressing component 41 and the anti-explosion coating 3 to fasten the anti-explosion coating 3. Thereby ensuring a reliable connection between the antiknock coating 3 and the load-bearing member 2.

Further, as shown in fig. 4, the connecting member 42 sequentially penetrates through the pressing member 41, the finishing paint layer 7, the anti-explosion coating 3 and the second primer layer 62 and then is fixed in the load-bearing member 2.

Further, as shown in fig. 4, a third primer layer 63 is disposed between the pressing member 41 and the topcoat layer 7. The third primer layer 63 may improve adhesion between the pressing member 41 and the finish paint in the finish paint layer 7.

In a specific embodiment, the primers used in the first, second, and third primer layers 61, 62, and 63 are materials having adhesion. Specifically, the primer used in the first primer layer 61, the second primer layer 62, and the third primer layer 63 is selected from any one or more of epoxy resin and polyurethane. The primer used in the first primer layer 61, the second primer layer 62 and the third primer layer 63 has adhesion, the primer used in the first primer layer 61 can be firmly adhered to the antiknock coating used in the antiknock coating 3 and the mortar used in the mortar leveling layer 5, respectively, the primer used in the second primer layer 62 can be firmly adhered to the antiknock coating used in the antiknock coating 3 and the surface of the bearing member 2, respectively, and the primer used in the third primer layer 63 can be firmly adhered to the finish paint used in the pressing member 41 and the finish paint layer 7, respectively.

In a specific embodiment, as shown in fig. 1, 2 and 4, the pressing member 41 is selected from one of angle iron and steel plate pressing strips. The surfaces of the two sides of the connecting boundary of the load-bearing member 2 and the masonry 1 can be in a certain angle or on the same plane.

In a specific embodiment, as shown in fig. 1, 2 and 4, the connecting member 42 is selected from a bolt or an anchor bolt. Wherein the bolt is an expansion bolt. The anchor bolt is a chemical anchor bolt.

Example 1

The use process of the masonry antiknock structure comprises the following steps:

the surface of the masonry infilled wall, namely the wall surface of the back explosion surface A or the front explosion surface B, is repaired and cleaned, primer is directly coated on the surface of the masonry 1 to form a first primer layer 61, or a layer of mortar is firstly coated on the surface of the masonry to form a mortar leveling layer 5, and then primer is coated on the mortar leveling layer to form the first primer layer 61. Thereby closing the wall surface of the original wall body of the masonry 1 and preventing the water from seeping out.

The load bearing member 2 connected to the masonry infill is inspected and a second primer layer 62 is applied to the interface C of the connecting edge of the load bearing member 2 to the masonry infill.

And then, spraying an anti-explosion coating on the surface of the masonry filler wall and a connecting edge interface C of the bearing member 2 and the masonry filler wall, namely forming the anti-explosion coating 3 on the first primer layer 61 and the second primer layer 62, wherein the thickness of the anti-explosion coating 3 is 2-30mm, and the anti-explosion coating 3 is uniformly sprayed, so that the phenomenon that the weak part is torn due to the fact that the anti-explosion coating 3 is not uniformly distributed is avoided.

If the blast shock wave load is large, a fastening part 4 may be provided at the position of the antiknock coating 3 on the connecting edge interface C to fix the antiknock coating 3 on the load-bearing member 2. Specifically, on the anti-explosion coating 3 sprayed on the connecting edge interface C of the bearing member 2 and the masonry infilled wall, the angle iron or steel plate pressing strip serving as the pressing piece 41 is adopted to press the anti-explosion coating 3, so that the anti-explosion coating 3 is uniformly stressed for one circle and cannot fall off. And then the bolt or anchor bolt as a connecting piece 42 sequentially penetrates through the angle iron or steel plate pressing strip and the anti-explosion coating 3 and is fixed in the bearing component 2 for fastening the anti-explosion coating 3. A finish paint layer 7 is arranged between the anti-explosion coating 3 and the angle iron or steel plate pressing strip serving as the pressing piece 41, a second primer layer 62 is arranged between the anti-explosion coating 3 and the bearing member 2, a primer with adhesive force is coated between the angle iron or steel plate pressing strip serving as the pressing piece 41 and the finish paint layer 7 to form a third primer layer 63, and the connecting piece 42 sequentially penetrates through the pressing piece 41, the third primer layer 63, the finish paint layer 7, the anti-explosion coating 3 and the second primer layer 62 and then is fixed in the bearing member 2. In practical operation, when angle iron or steel plate pressing strips are used as the pressing pieces 41, bolts or anchor bolts can be used as the connecting pieces 42, and expansion bolts are generally used as the bolts. The anchor bolt generally selects the chemical anchor bolt, and is fixed by gluing and anchoring, thereby avoiding the falling off of the anti-explosion coating 3.

After the anti-explosion coating 3 is fixed, a finish paint layer 7 formed by coating finish paint on the exposed surface of the anti-explosion coating 3 is used for preventing the surface of the anti-explosion coating 3 from being oxidized, absorbing ultraviolet rays or heat radiation and beautifying the appearance.

When outdoor explosion happens, due to the elastic-plastic property of the anti-explosion coating 3 and the firm connection with the bearing component 2, the anti-explosion coating absorbs shock wave energy and can prevent fragments of the masonry 1 from being thrown indoors and flying at high speed to cause secondary damage. Meanwhile, the anti-explosion coating 3 is sprayed on the back explosion surface A or the head explosion surface B of the brick wall, so that the integrity of the wall body is enhanced, the expansion of wall body cracks is hindered, and the possibility of wall body collapse is reduced.

Practically speaking, when the back of the clay red brick is coated with 6mm of antiknock coating, the clay red brick can resist the load of 10kg of TNT placed at 3m through testing, and the peak reflection overpressure reaches 4.2 MPa.

In conclusion, the masonry antiknock structure provided by the invention can absorb shock wave energy when explosion occurs, enhances the integrity of a wall body, hinders the expansion of wall body cracks, reduces the possibility of wall body collapse, avoids secondary damage caused by throwing bricks indoors, has the advantages of simple reinforcing process, convenience in construction, short construction period and small influence on normal production, and overcomes the defects of the existing masonry infilled wall antiknock reinforcing technology. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The masonry antiknock structure is characterized by comprising masonry (1) and a bearing member (2) used for bearing the masonry (1), wherein an antiknock coating (3) is coated on the surface of the masonry (1) and a connecting edge interface (C) of the bearing member (2) and the masonry (1), and the surface of the masonry (1) is selected from any one surface or two surfaces of a back explosion surface (A) or an explosion surface (B).

2. A masonry blast resistant construction according to claim 1, characterized in that said masonry (1) is masonry infill; the bearing member (2) is a concrete frame member.

3. A masonry blast resistant construction according to claim 1, characterized in that the exposed surface of said blast resistant coating (3) is provided with a finish paint layer (7).

4. A masonry antiknock structure according to claim 1, characterized in that a first primer layer (61) is provided between the antiknock coating (3) and the surface of the masonry (1), and a second primer layer (62) is provided between the antiknock coating (3) and the joint interface (C).

5. A masonry blast resistant construction according to claim 4, characterised in that a mortar screed (5) is provided between the first primer layer (61) and the surface of the masonry (1).

6. A masonry blast resistant construction according to claim 1, characterized in that the blast resistant coating (3) is fixed to the load bearing elements (2) via fastening means (4).

7. A masonry blast resistant structure as defined in claim 6, characterized in that said fastening means (4) comprises a pressing member (41) and a connecting member (42), said pressing member (41) is located on the connecting edge interface (C) of said load bearing member (2) and masonry (1) for pressing said blast resistant coating (3), said connecting member (42) is fixed in said load bearing member (2) for fastening said blast resistant coating (3) after passing through said pressing member (41) and said blast resistant coating (3) in sequence.

8. Masonry blast resistant construction according to any of the claims 3 or 7, characterised in that a third primer layer (63) is arranged between the compression means (41) and the finishing paint layer (7).

9. The masonry blast resistant construction according to claim 7, wherein said hold down members (41) are selected from one of angle iron or steel plate battens; the connecting piece (42) is selected from one of a bolt or an anchor bolt.