A fireproof and explosion-resistant multi-defense combined shear wall

Abstract

The present invention discloses a fireproof and explosion-resistant multiple defense combined shear wall, which belongs to the technical field of shear walls. The shear wall includes a negative Poisson's ratio layer, a high damping mortar layer, a reinforced rubber aggregate concrete layer, a high damping mortar layer, and a UHPC steel concrete layer, which are sequentially arranged from the outside to the inside. Compared with the prior art, the present invention has the following beneficial effects: the multiple defense methods are used to block the explosion impact layer by layer, which greatly reduces the possibility of the overall collapse of the wall after the explosion impact. At the same time, the high damping mortar layer can also play an energy-consuming role, thereby greatly improving the explosion resistance of the shear wall, ensuring that it can maintain the proper bearing capacity when it is subjected to the explosion impact; finally, the application of the fireproof coating improves the fire resistance of the shear wall, which can well cope with the fire that may occur after the explosion.

Description

Technical Field

[0001] The invention belongs to the technical field of shear walls, and in particular relates to a fireproof and explosion-resistant multi-defense combined shear wall. Background Art

[0002] Shear walls are an important vertical structural component, widely used in various buildings. However, since the out-of-plane stress conditions are not considered during the structural design, the shear wall's ability to resist explosion impact is often insufficient. When a building is hit by an explosion or a gas explosion, the shear wall is easily damaged and loses its bearing capacity, which may lead to the continuous collapse of the building, seriously threatening people's lives and property. Therefore, it is critical to improve the explosion resistance of the shear wall and ensure that it maintains its proper bearing capacity when it is hit by an explosion. At the same time, explosions are often accompanied by fires. Therefore, while improving the explosion resistance of the shear wall, it is also crucial to improve the fire resistance. Summary of the invention

[0003] The purpose of an embodiment of the present invention is to provide a fire-proof and explosion-resistant multi-defense combined shear wall, which has three defense lines. By allowing the first two defense lines to be destroyed, the explosion shock wave is weakened, thereby ensuring the safety of the last defense line and improving the explosion resistance of the wall. At the same time, the high-damping mortar layer can also play an energy-absorbing role. In addition, the application of a fire-retardant coating improves the fire resistance of the shear wall, thereby solving at least one technical problem involved in the background technology.

[0004] In order to solve the above-mentioned technical problems, the present invention is achieved as follows:

[0005] An embodiment of the present invention provides a fire-proof and explosion-resistant multi-defense combined shear wall, comprising a negative Poisson's ratio layer, a high damping mortar layer, a reinforced rubber aggregate concrete layer, a high damping mortar layer and a UHPC steel concrete layer, which are arranged in sequence from the outside to the inside.

[0006] Optionally, it also includes bolts arranged between the negative Poisson's ratio layer and the high damping mortar layer.

[0007] Optionally, there are multiple bolts, and the multiple bolts are evenly spaced along the height direction of the shear wall.

[0008] Optionally, it also includes a fire-resistant coating applied to the outer surfaces of the negative Poisson's ratio layer and the UHPC steel concrete layer.

[0009] Optionally, the reinforced rubber aggregate concrete layer includes rubber concrete and a steel mesh embedded in the rubber concrete.

[0010] Optionally, the UHPC steel concrete layer includes UHPC concrete and I-beams embedded in the UHPC concrete.

[0011] Optionally, there are multiple I-beams, and the multiple I-beams are evenly spaced along the height direction of the shear wall.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention sets three lines of defense, thereby allowing the first two lines of defense to be destroyed to weaken the explosion shock wave, thereby ensuring the safety of the last line of defense and improving the explosion resistance of the wall.

[0014] 2. The present invention arranges a negative Poisson's ratio layer in the first layer of the shear wall, thereby achieving significant impact resistance and energy dissipation effects through the special compression-enhanced mechanical properties and excellent wave clipping performance of the negative Poisson's ratio structure under explosion load. The negative Poisson's ratio layer allows destruction and plays a role in blocking part of the shock wave.

[0015] 3. The present invention arranges a reinforced rubber aggregate concrete layer on the second layer of the shear wall, thereby achieving significant impact resistance and energy dissipation effects through the good energy absorption capacity of the rubber concrete, allowing the reinforced rubber aggregate concrete layer to be destroyed under a strong explosion load, thereby further blocking the shock wave.

[0016] 4. The present invention arranges a UHPC steel concrete layer on the third layer of the shear wall, so that the high strength of the UHPC steel concrete layer can be used to resist the explosion impact weakened by the first two lines of defense, while independently meeting the load-bearing requirements.

[0017] 5. The present invention connects each layer by using a high damping mortar layer. The negative Poisson's ratio layer is connected to the high damping mortar layer by bolts. The strength of the high damping mortar layer is much lower than the strength of concrete. Therefore, the connection between each defense line is a weak connection, so that each defense line will not be continuously destroyed, thereby achieving the purpose of blocking the explosion impact layer by layer. At the same time, the high damping mortar layer can also play an energy dissipation role.

[0018] 6. The present invention can effectively deal with fires that may occur after explosions by applying a fire-resistant coating on the outer surface of the shear wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0020] Figure 1 A schematic diagram of the structure of a fireproof and explosion-resistant multi-defense combined shear wall provided by the present invention;

[0021] Figure 2 This is a schematic structural diagram of the negative Poisson's ratio layer provided by the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The terms "first", "second", etc. in the specification and claims of the present invention are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0024] See also Figure 1 As shown, an embodiment of the present invention provides a fire-proof and explosion-resistant multi-defense combined shear wall, including a negative Poisson's ratio layer 1, a high damping mortar layer 2, a reinforced rubber aggregate concrete layer 3, a high damping mortar layer 2 and a UHPC steel concrete layer 4, which are arranged in sequence from the outside to the inside.

[0025] The structure of the negative Poisson's ratio layer 1 is as follows Figure 2 As shown, the negative Poisson's ratio structure has a special compression-enhanced mechanical property and excellent wave clipping performance under explosion load, which plays a significant role in impact resistance and energy dissipation. The negative Poisson's ratio layer 1 is allowed to be destroyed, which can block part of the shock wave.

[0026] The strength of the high damping mortar layer 2 is much lower than that of concrete, so that the connections between the negative Poisson's ratio layer 1, the reinforced rubber aggregate concrete layer 3 and the UHPC steel concrete layer 4 are all weak connections, so that each line of defense will not be continuously damaged. At the same time, the high damping mortar layer 2 can also play an energy dissipation role.

[0027] The reinforced rubber aggregate concrete layer 3 includes rubber concrete 31 and a steel mesh 32 embedded in the rubber concrete 31. By providing the reinforced rubber aggregate concrete layer 3, the good energy absorption capacity of the rubber concrete is used to achieve significant impact resistance and energy dissipation. The reinforced rubber aggregate concrete layer 3 is allowed to be destroyed under a strong explosion load, thereby further blocking the shock wave.

[0028] Specifically, the steel mesh 32 is arranged parallel to the negative Poisson's ratio layer 1 .

[0029] The UHPC steel concrete layer 4 includes UHPC concrete 41 and I-beams 42 embedded in the UHPC concrete 41. By providing the UHPC steel concrete layer 4, the high strength of the UHPC steel concrete layer 4 can be used to resist the explosion impact weakened by the first two defense lines, and the load-bearing requirements can be met independently.

[0030] Specifically, there are a plurality of I-beams 42 , and the plurality of I-beams 42 are evenly spaced apart along the height direction of the shear wall.

[0031] The shear wall further comprises bolts 5 which are arranged between the negative Poisson's ratio layer 1 and the high damping mortar layer 2 and play a connecting role.

[0032] In a specific embodiment, there are multiple bolts 5, and the multiple bolts 5 are evenly spaced along the height direction of the shear wall.

[0033] The shear wall also includes a fireproof coating 6 applied to the outer surfaces of the negative Poisson's ratio layer 1 and the UHPC steel concrete layer 4. By applying the fireproof coating 6 on the outer surface of the shear wall, fires that may occur after an explosion can be effectively dealt with.

[0034] In general, the shear wall provided by the present invention uses multiple defense methods to block the explosion impact layer by layer, greatly reducing the possibility of the wall body collapsing as a whole after being impacted by the explosion. At the same time, the high damping mortar layer can also play an energy dissipation role, thereby greatly improving the explosion resistance of the shear wall, ensuring that it can maintain the proper bearing capacity when it is impacted by the explosion. The fire resistance of the shear wall is improved, and it can well deal with the fire that may occur after the explosion.

[0035] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0036] In addition, it should be noted that the scope of the methods and systems in the embodiments of the present invention is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0037] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A fireproof and explosion-resistant multi-defense combined shear wall, characterized in that: The invention comprises a negative Poisson's ratio layer for blocking explosion shock waves, a high damping mortar layer for weak connection, a reinforced rubber aggregate concrete layer for blocking explosion shock waves, a high damping mortar layer for weak connection and an UHPC steel concrete layer for resisting explosion shock waves and independently meeting the load-bearing requirements, which are arranged in sequence from the outside to the inside. The negative Poisson's ratio layer and the reinforced rubber aggregate concrete layer, as well as the reinforced rubber aggregate concrete layer and the UHPC steel concrete layer are respectively weakly connected by the high damping mortar layer, so that the negative Poisson's ratio layer, the reinforced rubber aggregate concrete layer and the UHPC steel concrete layer will not be continuously damaged.

2. The fireproof and explosion-resistant multi-defense combined shear wall according to claim 1 is characterized in that: It also includes bolts arranged between the negative Poisson's ratio layer and the high damping mortar layer.

3. The fireproof and explosion-resistant multi-defense combined shear wall according to claim 2 is characterized in that: There are multiple bolts, and the multiple bolts are evenly spaced along the height direction of the shear wall.

4. The fireproof and explosion-resistant multi-defense combined shear wall according to claim 1 is characterized in that: It also includes a fireproof coating applied on the outer surfaces of the negative Poisson's ratio layer and the UHPC steel concrete layer.

5. The fireproof and explosion-resistant multi-defense combined shear wall according to claim 1 is characterized in that: The reinforced rubber aggregate concrete layer comprises rubber concrete and a steel mesh embedded in the rubber concrete.

6. The fireproof and explosion-resistant multi-defense combined shear wall according to claim 1 is characterized in that: The UHPC steel concrete layer includes UHPC concrete and I-beams embedded in the UHPC concrete.

7. The fireproof and explosion-resistant multi-defense combined shear wall according to claim 6 is characterized in that: There are multiple I-beams, and the multiple I-beams are evenly spaced along the height direction of the shear wall.

Images