Explosion-proof pressure relief wallboard with built-in steel pipes

Abstract

The explosion-proof pressure relief wallboard comprises an inner side wallboard body and an outer side wallboard body, a buffer cavity is formed between the outer side wallboard body and the inner side wallboard body, a plurality of steel pipe units arranged in the width direction of the inner side wallboard body at intervals are arranged in the buffer cavity, and each steel pipe unit comprises at least one vertically-arranged steel pipe; the steel pipes are filled with steel pipe UHPC concrete, the inner sides of the steel pipes are matched with the inner wall plate in a force transmission mode, the outer sides of the steel pipes and the outer wall plate are arranged in a spaced mode, elastic buffering units are further arranged in the buffering cavity, and the portions, on the peripheries of the steel pipe units and the elastic buffering units, in the buffering cavity are filled with buffering cavity foam. A pressure relief channel is formed between the two ends of the width direction of the inner side wall body and the two ends of the width direction of the outer side wall body and filled with end foam. According to the anti-explosion pressure relief wallboard with the built-in steel pipes, damage to the internal structure of the wallboard can be reduced during explosion impact.

Description

Technical Field

[0001] The invention relates to the field of explosion-proof walls, and in particular to an explosion-proof pressure relief wall panel with built-in steel pipes. Background Art

[0002] With the acceleration of urbanization, important facilities in cities (such as financial institutions, data centers, nuclear power plants, etc.) need to face more and more potential security threats, including industrial explosions and natural disasters. These facilities have put forward higher requirements on the explosion-proof performance of buildings, prompting people to explore better materials and structural designs.

[0003] When an explosion occurs, a powerful shock wave is generated. Explosion-proof wall panels can disperse and absorb the energy of the shock wave through their own structural strength and special design. Explosion-proof wall panels are generally made of high-strength materials, such as reinforced concrete or special metal composite materials. These materials can withstand huge pressure and prevent shock waves from directly penetrating the wall, thereby protecting the safety of people and facilities behind the wall.

[0004] In the prior art, there are often some explosion-proof wall panels whose internal functions are damaged due to insufficient pressure and explosion resistance of the outer wall. There is an urgent need for an explosion-proof wall panel that can effectively resist the impact of explosions without causing significant damage to the overall internal structure. Summary of the invention

[0005] The object of the present invention is to provide an explosion-proof pressure relief wall panel with built-in steel pipes which can reduce the damage to the internal structure of the wall panel during explosion impact.

[0006] In order to solve the above technical problems, the technical solution of an explosion-proof pressure relief wall panel with built-in steel pipes in the present invention is as follows: A explosion-proof pressure relief wall panel with built-in steel pipes comprises an inner wall panel and an outer wall panel capable of moving toward the inner wall panel during explosion impact, the outer wall panel and the inner wall panel are both prefabricated wall panels with built-in steel skeletons, a buffer cavity is provided between the outer wall panel and the inner wall panel, a plurality of steel pipe units arranged at intervals along the width direction of the inner wall panel are arranged in the buffer cavity, each steel pipe unit comprises at least one vertically arranged steel pipe, the steel pipe is filled with steel pipe UHPC concrete, the inner side of the steel pipe cooperates with the inner wall panel for force transmission, the outer side of the steel pipe is arranged at intervals with the outer wall panel, an elastic buffer unit is also provided in the buffer cavity, the elastic buffer unit comprises a spring seat fixed on the inner wall panel, a buffer spring is provided on the spring seat with an axis arranged along the inner and outer directions, the outer end of the buffer spring cooperates with the inner side of the outer wall panel for force transmission, the buffer cavity is filled with buffer cavity foam on the periphery of the steel pipe unit and the elastic buffer unit, a pressure relief channel is provided between the two ends in the width direction of the inner wall body and the outer wall, and the pressure relief channel is filled with end foam.

[0007] Furthermore, the buffer cavity foam is fireproof foam, and the end foam is flame-retardant foam plastic.

[0008] Furthermore, the inner wall panels and the outer wall panels are both UHPC concrete wall panels.

[0009] Furthermore, the thickness of the buffer cavity in the inner and outer directions is greater than the thickness of the pressure relief channel in the inner and outer directions.

[0010] Furthermore, the end cross-section of the outer wall panel is a "convex"-shaped structure with the convex direction facing inward, and the end cross-section of the inner wall panel is a "concave"-shaped structure arranged corresponding to the "convex"-shaped structure. The pressure relief channel is formed between the "convex"-shaped structure and the "concave"-shaped structure. During the inward movement of the outer wall panel, the convexity of the "convex"-shaped structure can move into the groove of the "concave"-shaped structure.

[0011] Furthermore, the pressure relief channel includes a first vertical groove arranged between the protrusion of the "convex" shaped structure and the groove of the "concave" shaped structure, and the pressure relief channel also includes a second vertical groove and a third vertical groove located on both sides of the first vertical groove. The first vertical groove is located on the inner side of the second vertical groove and the third vertical groove, and the adjacent ends of the first vertical groove and the second vertical groove are connected; the adjacent ends of the first vertical groove and the third vertical groove are connected.

[0012] Furthermore, each steel pipe unit includes two steel pipes spaced apart in the width direction of the buffer cavity, and a steel pipe positioning support is preset on the inner wall panel, and the steel pipe is welded and fixed on the steel pipe positioning support.

[0013] Furthermore, an installation groove is provided on the inner wall panel between the corresponding two steel pipes of the steel pipe unit, the inner end of the spring seat is fixedly provided in the installation groove, the outer end of the spring seat is provided with a spring positioning groove, and the inner end of the buffer spring is provided in the spring positioning groove.

[0014] Furthermore, the left and right sides of the outer end of the spring seat are welded and fixed to the opposite sides of the two steel pipes of the corresponding steel pipe unit.

[0015] Furthermore, it also includes a wall panel frame, and the inner wall panel and the outer wall panel are arranged on the inner side of the wall panel frame.

[0016] The beneficial effects of the present invention are as follows: in the present invention, when an explosion occurs, the impact force first acts on the outer wall panel with a built-in steel skeleton, and the outer wall panel resists the damage of the explosion impact, thereby reducing the risk of wall fragmentation and collapse; when the impact force is large, the outer wall panel moves toward the inner wall panel, squeezing the buffer spring and the buffer cavity foam in the buffer cavity, and absorbing and storing a large amount of energy through the compressive deformation of the buffer spring and the buffer cavity foam, which can effectively reduce the impact of the impact force on the building structure protection system and protect the building body and the internal personnel from excessive impact; if the impact force is larger, the inner side of the outer wall panel will press against the steel pipe, and the impact force will be evenly transmitted to the inner wall panel by the steel pipe, and the composite structure of the steel pipe and the UHPC concrete in the steel pipe can give full play to the tensile resistance of the steel pipe and the compressive resistance of the UHPC. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 is a top view of an embodiment of the explosion-proof pressure relief wall panel of the present invention; Figure 2 yes Figure 1 Schematic diagram of the coordination between the middle elastic buffer unit, the steel pipe unit, the inner wall panel and the outer wall panel; Figure 3 yes Figure 2 Structural diagram of the middle spring seat; 1. Outer wall panel; 2. Inner wall panel; 3. Steel pipe; 4. Buffer spring; 5. Spring seat; 6. End foam; 7. Steel pipe positioning support; 8. Buffer cavity foam; 9. Spring positioning groove; 10. UHPC concrete; 11. Buffer cavity; 12. Left column; 13. Right column; 14. "Concave" shaped structure; 15. "Convex" shaped structure; 16. Steel pipe unit; 17. Elastic buffer unit; 18. First vertical groove; 19. Second vertical groove; 20. Third vertical groove; 21. Column channel. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0019] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0020] An example of an explosion-proof pressure relief wall panel with a built-in steel pipe in the present invention is as follows: Figures 1 to 3 As shown: It includes an inner wall panel 2 and an outer wall panel 1 that can move toward the inner wall panel 2 during an explosion impact, and also includes a wall panel frame. The inner wall panel and the outer wall panel are arranged on the inner side of the wall panel frame. In this embodiment, in order to illustrate the problem more clearly, the thickness direction of the inner wall panel is defined as the front-to-back direction, the width direction of the inner wall panel 2 is the left-to-right direction, and the height direction of the inner wall panel 2 is the up-down direction. The wall panel frame includes a left column 12 and a right column 13 located on the left and right sides of the inner wall panel and the outer wall panel, and the wall panel frame also includes a top beam and a bottom beam (not shown in the figure) located on the upper and lower sides of the inner wall panel and the outer wall panel.

[0021] The outer wall panels and the inner wall panels are both prefabricated wall panels with built-in steel skeletons, and the prefabricated wall panels are UHPC concrete wall panels. A buffer cavity 11 is provided between the outer wall panels and the inner wall panels, and a plurality of steel pipe units 16 are arranged in the buffer cavity 11 at intervals along the width direction of the inner wall panel, i.e., the left and right directions. Each steel pipe unit 16 includes two vertically arranged steel pipes 3, and the two steel pipes of the steel pipe unit are arranged at intervals on the left and right sides. The steel pipes are filled with steel pipe UHPC concrete 10, which is ultra-high performance concrete, and has high energy absorption capacity and deformation capacity when subjected to impact loads.

[0022] The inner side of the steel pipe cooperates with the inner wall panel 2 in force transmission, and the outer side of the steel pipe is spaced apart from the outer wall panel. The force transmission cooperation in this embodiment means that when the steel pipe is subjected to an inward force, the force of the steel pipe can be transmitted to the inner wall panel. In the present invention, a steel pipe positioning support 7 is preset on the inner wall panel, and the steel pipe positioning support 7 is distributed on the left and right sides of the corresponding steel pipe, and the left and right sides of the steel pipe 3 are welded and fixed to the steel pipe positioning support 7.

[0023] An elastic buffer unit 17 is also provided in the buffer cavity. In the present embodiment, the elastic buffer unit 17 is provided in one-to-one correspondence with the steel pipe unit 16. The elastic buffer unit 17 includes a spring seat 5 fixed on the inner wall panel. A buffer spring 4 is provided on the spring seat 5 with an axis arranged along the inner and outer directions. The outer end of the buffer spring 4 cooperates with the inner side of the outer wall panel 1 for force transmission. The buffer cavity is filled with buffer cavity foam 8 on the periphery of the steel pipe unit and the elastic buffer unit. A pressure relief channel is provided between the two ends in the width direction of the inner wall and the outer wall, and the pressure relief channel is filled with end foam 6.

[0024] In this embodiment, the foam in the buffer cavity is fireproof foam, and the foam at the end is flame-retardant foam plastic.

[0025] In this embodiment, the thickness of the buffer cavity in the inner and outer directions is greater than the thickness of the pressure relief channel in the inner and outer directions. The end section of the outer wall panel is a "convex"-shaped structure 15 with the convex direction facing inward, and the end section of the inner wall panel is a "concave"-shaped structure 14 arranged corresponding to the "convex"-shaped structure. The pressure relief channel is formed between the "convex"-shaped structure and the "concave"-shaped structure. During the inward movement of the outer wall panel, the convexity of the "convex"-shaped structure can move into the concave groove of the "concave"-shaped structure. The pressure relief channel includes a first vertical groove 18 arranged between the convexity of the "convex"-shaped structure and the concave groove of the "concave"-shaped structure. The pressure relief channel also includes a second vertical groove 19 and a third vertical groove 20 located on both sides of the first vertical groove. The first vertical groove 18 is located on the inner side of the second vertical groove 19 and the third vertical groove 20. The adjacent ends of the first vertical groove and the second vertical groove are connected; the adjacent ends of the first vertical groove and the third vertical groove are connected. The left column and the right column are provided with column channels 21 which are the same as the pressure relief channel. One end of the column channel is connected with the pressure relief channel, and the other end of the column channel is connected with the outer side surface of the corresponding column, so that the compressed airflow can be discharged to the outside of the column through the column channel.

[0026] An installation groove 9 is provided between the corresponding two steel pipes of the steel pipe unit on the inner wall panel, the inner end of the spring seat 5 is fixedly provided in the installation groove, the outer end of the spring seat 5 is provided with a spring positioning groove 9, the inner end of the buffer spring 4 is provided in the spring positioning groove 9, and the outer end of the buffer spring 4 is against the inner side of the outer wall panel 1. The left and right sides of the outer end of the spring seat are welded and fixed to the opposite sides of the two steel pipes of the corresponding steel pipe unit. When in use, the inner side of the fireproof foam is bonded to the inner wall panel, and the outer side of the fireproof foam is bonded to the outer wall panel.

[0027] When an explosion occurs outside the explosion-proof pressure relief wall panel, the impact generated by the explosion first acts on the outer wall panel, and the outer wall panel first resists part of the impact force. Then, under the action of the impact force, the outer wall panel moves toward the inner wall panel and squeezes the buffer spring and the buffer cavity foam, and compressed gas is generated in the buffer cavity. The deformation of the buffer spring, the deformation of the buffer foam and the compression of the gas work together to achieve secondary buffering. The compressed gas generated in the buffer cavity flows in the pores inside the buffer cavity foam to achieve buffering. Then the air flow flows through the pores inside the end foam. Since a tortuous pressure relief channel is formed between the "convex"-shaped structure and the "concave"-shaped structure, the tortuous pressure relief channel is more conducive to the buffering release of the air flow pressure. At the same time, as the outer wall panel continues to move inward, the bulge of the "convex"-shaped structure enters the groove of the "concave"-shaped structure. On the one hand, the channel width of the pressure relief channel is reduced and the tortuosity is increased. On the other hand, the positioning relationship between the outer wall panel and the inner wall panel is also achieved to ensure the integrity of the outer wall panel and the inner wall panel structure. When the outer wall panel is against the outer end of the steel pipe, the impact force is buffered by the deformation of the steel pipe, and the impact force will also be evenly transmitted to the inner wall panel by the steel pipe, thereby fully resisting the impact force caused by the explosion.

[0028] The present invention also has the following technical effects: 1. Improve impact resistance The inner and outer wall panels made of UHPC have high strength and toughness, and can effectively disperse and absorb explosion impact energy.

[0029] Ultra-high performance concrete (UHPC) is filled in the steel pipe, which has high energy absorption and deformation capacity when subjected to impact loads, and can significantly improve the overall explosion resistance of the outer wall panels, while enhancing the overall stiffness and bearing capacity of the components and the thermal insulation protection. The steel pipe has good plastic deformation ability when impacted, and can effectively dissipate the energy brought by the explosion or impact. Under the constraint of the steel pipe, UHPC concrete is not easy to break, forming an integral "energy-absorbing shell", which improves the explosion resistance of the overall structure.

[0030] Buffer springs are highly efficient in buffering and absorbing energy: Buffer springs have good elasticity and deformation capacity, can quickly deform elastically when under pressure, absorb and store a large amount of energy, and can effectively buffer and reduce the impact of the impact force on the building structure and protection system when an explosion occurs, protecting the main building and internal personnel from excessive impact. Buffer springs can, to a certain extent, adjust and balance the stress distribution of the structure when it is impacted, avoid stress concentration leading to premature damage to the local structure, enable the entire protection system to withstand the explosion impact more evenly, extend the service life of the protection structure, and improve its reliability under extreme conditions.

[0031] 2. Optimize structural ductility The restraint of steel tube concrete enhances the ductility of UHPC, showing good plastic deformation capacity under blast load, delaying the destruction process of the wall and avoiding brittle failure. The improved ductility helps the structure remain stable under extreme load conditions and protects the internal facilities and personnel safety.

[0032] 3. Improve crack control The combined structure of steel tube and UHPC can effectively limit the expansion of cracks on the UHPC surface and prevent the explosion load from causing large-scale peeling or collapse of the wall. The high tensile strength of UHPC combined with the support of steel tube concrete makes the crack distribution more uniform and reduces the risk of local damage.

[0033] 4. Improve durability and fire resistance UHPC has excellent durability and can resist corrosion and chemical attack in harsh environments, while the use of steel tube concrete further enhances the wall's fire resistance. Explosions are often accompanied by high temperatures, and the temperature buffering effect of steel tube concrete improves the stability of the wall under extreme conditions.

[0034] 5. Increased versatility This combined structure not only has explosion-proof properties, but also has multifunctionality in terms of impact resistance, fire resistance, sound insulation, etc. It is widely used in fields with high safety requirements such as military, chemical industry, nuclear power, etc.

[0035] 7. Economy and sustainability Although the initial cost may be higher, its superior performance and long service life reduce maintenance and replacement costs, making it more economical over its life cycle. The combination of UHPC and steel tube concrete makes resource utilization more efficient while reducing material waste in traditional explosion-proof designs.

[0036] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0037] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0038] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An explosion-proof pressure relief wall panel with built-in steel pipe, characterized in that: It includes an inner wall panel and an outer wall panel that can move toward the inner wall panel during an explosion impact. Both the outer wall panel and the inner wall panel are prefabricated wall panels with a built-in steel skeleton. A buffer cavity is provided between the outer wall panel and the inner wall panel. A plurality of steel pipe units arranged at intervals along the width direction of the inner wall panel are arranged in the buffer cavity. Each steel pipe unit includes at least one vertically arranged steel pipe, and the steel pipe is filled with steel pipe UHPC concrete. The inner side of the steel pipe cooperates with the inner wall panel for force transmission, and the outer side of the steel pipe is arranged at intervals with the outer wall panel. An elastic buffer unit is also provided in the buffer cavity. The elastic buffer unit includes a spring seat fixed on the inner wall panel, and a buffer spring is provided on the spring seat with an axis arranged along the inner and outer directions. The outer end of the buffer spring cooperates with the inner side of the outer wall panel for force transmission. The buffer cavity is filled with buffer cavity foam on the periphery of the steel pipe unit and the elastic buffer unit. A pressure relief channel is provided between the two ends in the width direction of the inner wall body and the outer wall, and the pressure relief channel is filled with end foam.

2. The explosion-proof pressure relief wall panel according to claim 1, characterized in that: The buffer cavity foam is fireproof foam, and the end foam is flame-retardant foam plastic.

3. The explosion-proof pressure relief wall panel according to claim 1, characterized in that: The inner and outer wall panels are both UHPC concrete wall panels.

4. The explosion-proof pressure relief wall panel according to claim 1, characterized in that: The thickness of the buffer cavity in the inner and outer directions is greater than the thickness of the pressure relief channel in the inner and outer directions.

5. The explosion-proof pressure relief wall panel according to claim 4, characterized in that: The end section of the outer wall panel is a "convex"-shaped structure with the convex direction facing inward, and the end section of the inner wall panel is a "concave"-shaped structure arranged corresponding to the "convex"-shaped structure. The pressure relief channel is formed between the "convex"-shaped structure and the "concave"-shaped structure. During the inward movement of the outer wall panel, the convexity of the "convex"-shaped structure can move to the groove of the "concave"-shaped structure.

6. The explosion-proof pressure relief wall panel according to claim 5, characterized in that: The pressure relief channel includes a first vertical groove arranged between the protrusion of the "convex" shaped structure and the groove of the "concave" shaped structure. The pressure relief channel also includes a second vertical groove and a third vertical groove located on both sides of the first vertical groove. The first vertical groove is located on the inner side of the second vertical groove and the third vertical groove. The adjacent ends of the first vertical groove and the second vertical groove are connected; the adjacent ends of the first vertical groove and the third vertical groove are connected.

7. The explosion-proof pressure relief wall panel according to any one of claims 1 to 6, characterized in that: Each steel pipe unit includes two steel pipes spaced apart in the width direction of the buffer cavity. A steel pipe positioning support is preset on the inner wall panel, and the steel pipe is welded and fixed on the steel pipe positioning support.

8. The explosion-proof pressure relief wall panel according to claim 7, characterized in that: An installation groove is arranged on the inner wall panel between the corresponding two steel pipes of the steel pipe unit, the inner end of the spring seat is fixedly arranged in the installation groove, the outer end of the spring seat is arranged with a spring positioning groove, and the inner end of the buffer spring is arranged in the spring positioning groove.

9. The explosion-proof pressure relief wall panel according to claim 8, characterized in that: The left and right sides of the outer end of the spring seat are welded and fixed to the opposite sides of the two steel pipes of the corresponding steel pipe unit.

10. The explosion-proof pressure relief wall panel according to claim 1, characterized in that: It also includes a wall panel frame, and the inner wall panel and the outer wall panel are arranged on the inner side of the wall panel frame.

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