Double-steel-plate concrete blast-resistant wall structure with sound insulation property and construction method thereof

Abstract

The application relates to a double-steel-plate concrete blast-resistant wall structure with sound insulation characteristics and a construction method, which comprises: a left-right symmetrical one-side steel pipe end column, a front-back arranged first steel plate layer and a second steel plate layer; the outer sides of the first steel plate layer and the second steel plate layer are respectively sprayed with a first polyurea layer and a second polyurea layer, and the inner sides are respectively attached with a first damping felt layer and a second damping felt layer; a concrete layer is filled between the first steel plate layer and the second steel plate layer and is connected through a shock absorber; the shock absorber comprises a long screw rod, a short screw rod, a polymer damping shock absorbing rubber block and a damping spring, and a mounting seat; the long screw rod is provided with a sleeve, and the outer diameter of the sleeve is less than or equal to the diameter of the polymer damping shock absorbing rubber block. Compared with the prior art, the impact resistance is enhanced through the polyurea coating, the shock absorber cooperates with energy dissipation, the blast resistance is improved, and the sound insulation and noise reduction effects are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a double-steel-plate concrete blast-resistant wall structure with sound insulation characteristics and a construction method. BACKGROUND

[0002] In high-risk industries such as petrochemical industry and energy storage, once an explosion accident occurs, a strong shock wave and debris will be generated, which seriously threatens the safety of personnel and the integrity of equipment and facilities. As the core barrier against explosion impact, the blast resistance of blast-resistant wall is a key factor to ensure building safety. With the expansion of industrial production scale and the diversification of building function requirements, the demand for sound insulation and noise reduction of wall is increasingly prominent while ensuring excellent blast resistance.

[0003] Existing blast-resistant wall structures, such as single-steel-plate concrete blast-resistant wall and ordinary double-steel-plate concrete blast-resistant wall, can resist explosion impact to some extent, but still have obvious defects. When facing high-intensity explosion shock waves, the steel plate of single-steel-plate concrete blast-resistant wall is prone to local deformation or even tearing, which makes it difficult to fully dissipate explosion energy, and its internal structure is not conducive to sound blocking, resulting in poor sound insulation effect. Although the ordinary double-steel-plate concrete blast-resistant wall improves the overall strength of the wall, the connection between the steel plate and the concrete is not perfect, which leads to insufficient collaborative working capacity of the structure under explosion load, limited improvement of blast resistance, and the lack of targeted sound insulation design, which makes sound easily spread through the gaps and holes between the steel plate and the concrete, unable to meet the requirements of high noise control scenarios. In addition, during the construction process of traditional blast-resistant wall, the complex process leads to a long construction period, increasing the construction cost.

[0004] Patent CN202222824680.1 discloses a fireproof blast-resistant wall, which includes a keel frame, the front and back of the keel frame are fixedly connected with face plates, a filling layer is arranged between the two face plates, the face plate includes a base layer, the surface of the base layer is fixedly connected with an enhancement layer, the surface of the enhancement layer is fixedly connected with a waterproof layer, the surface of the waterproof layer is fixedly connected with a high-temperature-resistant layer, and the surface of the high-temperature-resistant layer is fixedly connected with a protective layer. However, the face plate contains 7 layers of structure including the base layer, the enhancement layer, the waterproof layer, etc., which is complex in structure and complicated in construction process.

[0005] The patent CN202210442752.8 discloses a fiber cement composite steel plate blast-resistant wall hole sealing device, comprising a wall body and a steel sleeve, the wall body has an installation hole penetrating through the two sides of the wall, the steel sleeve is inserted into the installation hole and penetrates through both ends, a steel plate is sleeved on both ends of the steel sleeve, a pipeline is arranged through the wall at both ends of the steel sleeve, and a positioning and mounting mechanism is arranged between the steel plate and the wall body. The installation hole is provided with a ring groove at both ends, and the diameter of the ring groove is larger than that of the installation hole. A connecting ring is fixed to one side of the steel plate and arranged in the ring groove. The inner diameter of the connecting ring is the same as the inner diameter of the installation hole. Oil, hemp and asbestos cement are laid between the inner wall of the steel sleeve and the outer wall of the pipeline. The structure is complex and the construction precision is high, and the adaptability is limited.

[0006] Therefore, there is an urgent need for a new blast-resistant wall structure and construction method that effectively improves sound insulation effect and optimizes construction process on the basis of ensuring blast resistance, to meet the dual demands of safety and functionality of current industrial buildings. SUMMARY

[0007] The purpose of the present application is to overcome the defects of the prior art and provide a double-steel-plate concrete blast-resistant wall structure and construction method with sound insulation properties. The impact resistance is enhanced by a polyurea coating, and the shock absorber cooperates with energy dissipation, which improves the blast resistance and improves the sound insulation and noise reduction effect.

[0008] The purpose of the present application can be achieved by the following technical solutions:

[0009] The present application provides a double-steel-plate concrete blast-resistant wall structure with sound insulation properties, comprising: a left-right symmetrically arranged square steel pipe end column, a front-back arranged first steel plate layer and a second steel plate layer;

[0010] The outer sides of the first steel plate layer and the second steel plate layer are respectively sprayed with a first polyurea layer and a second polyurea layer, and the inner sides are respectively covered with a first damping felt layer and a second damping felt layer. The first damping felt layer and the second damping felt layer are filled with a concrete layer, and the first steel plate layer and the second steel plate layer are connected by a shock absorber.

[0011] The shock absorber comprises a long screw rod, a short screw rod, a high-molecular-damping shock absorber block, a shock absorber spring and a mounting seat. The long screw rod is sleeved with a sleeve. The long screw rod sequentially passes through the shock absorber spring, the mounting seat, the high-molecular-damping shock absorber block and the sleeve to form a series energy dissipation path. The short screw rod sequentially passes through the first steel plate layer, the first damping felt layer and the upper end of the mounting seat to fix the shock absorber, the first steel plate layer and the first damping felt layer. The outer diameter of the sleeve is less than or equal to the diameter of the high-molecular-damping shock absorber block.

[0012] Further, the square steel pipe end column is fixed with the first steel plate layer and the second steel plate layer by welding.

[0013] Further, the first polyurea layer and the second polyurea layer are high-strength elastomer coatings formed by spraying, and the thickness of the first polyurea layer and the second polyurea layer is greater than or equal to 3 mm.

[0014] Further, the first damping felt layer and the second damping felt layer are viscoelastic porous materials, and the thickness of the first damping felt layer and the second damping felt layer is greater than or equal to 3 mm.

[0015] Further, the short screw rod of the shock absorber passes through the reserved bolt hole of the first steel plate layer and the first damping felt layer, the long screw rod of the shock absorber passes through the reserved bolt hole of the second damping felt layer and the second steel plate layer, and is anchored by a nut.

[0016] Further, the sleeve is a circular tube and is used to isolate the direct contact between the concrete layer and the long screw rod.

[0017] Further, the mounting seat has an inverted'several' shape in cross section, and the four sides of the mounting seat are closed structures to prevent the concrete from contacting the spring, and the mounting seat is made of a steel plate.

[0018] The application also provides a construction method of a double-steel-plate concrete blast-resistant wall structure with sound insulation properties, and the method comprises the following steps:

[0019] S1: welding the first steel plate layer and the square steel pipe end column arranged symmetrically left and right;

[0020] S2: pasting the first damping felt layer on the inner side of the first steel plate layer;

[0021] S3: fixing the shock absorber on the first steel plate layer and the first damping felt layer by the short screw rod and the nut;

[0022] S4: sleeving the sleeve on the long screw rod, and then fixing the second damping felt layer and the second steel plate layer by the nut through the long screw rod, and then welding the two ends of the second steel plate layer to the square steel pipe end column;

[0023] S5: spraying the first polyurea layer and the second polyurea layer on the outer side of the first steel plate layer and the second steel plate layer;

[0024] S6: pouring the concrete on the upper side of the wall body to form a concrete layer.

[0025] Further, in S5, the first polyurea layer and the second polyurea layer adopt a high-pressure spraying process. Before the polyurea is coated, the surface of the steel plate needs to be strictly treated to ensure that the polyurea has good adhesion with the steel plate. Usually, sand blasting treatment is needed to remove oil stains, rust marks and oxide scales on the surface of the steel plate, so that the surface of the steel plate reaches a certain roughness. The sand blasting treatment can increase the bonding strength of the polyurea and the steel plate to more than 20 MPa, so as to avoid the peeling of the coating.

[0026] Further, the concrete layer is self-compacting concrete.

[0027] Compared with the prior art, the present application has the following advantages:

[0028] (1) The impact resistance is enhanced by the polyurea coating, and the shock absorber cooperates to dissipate energy, so that the blast resistance is improved. The present application coats the polyurea coating on the outer side of the double-steel-plate blast wall, thereby improving the comprehensive performance of the blast wall. The polyurea material has high strength, high toughness and excellent impact resistance, and can effectively dissipate the shock wave energy generated by the explosion, so that the coating and the steel plate cooperate to reduce the deformation and damage of the wall body when the blast wall is subjected to explosion impact, thereby enhancing the blast resistance and protection ability; the dense molecular structure can form a high-efficiency waterproof barrier to isolate external water vapor and corrosive medium, prevent the steel plate from rusting, and prolong the service life of the blast wall; the polyurea coating also has good weather resistance and can maintain stable performance in extreme temperature and ultraviolet environments, thereby reducing the maintenance cost caused by environmental factors; at the same time, the polyurea material adopts a spraying process, which is convenient and efficient to construct, can be quickly cured and formed at room temperature, avoids the complexity of multi-layer construction of traditional protective materials, shortens the construction period, reduces the construction cost, and has significant economic benefits and practical value. The shock absorber device builds multiple blast defense lines. The pull rod system strengthens the overall rigidity of the wall body through mechanical connection, and the high-molecular-damping shock-absorbing glue and the shock-absorbing spring in the shock absorber cooperate to play a role: when the explosion impact occurs, the high-molecular-damping shock-absorbing glue quickly absorbs the impact energy by virtue of its viscoelasticity, and the shock-absorbing spring buffers the instantaneous impact force by elastic deformation, and the two work together to achieve efficient energy dissipation, thereby reducing the vibration amplitude of the wall body, and thus comprehensively improving the dynamic response ability, blast resistance and structural stability of the blast wall, and providing more reliable safety protection for the protected space.

[0029] (2) The sound insulation and noise reduction effect is improved. The double-steel-plate blast wall of the present application has the following effects: the viscoelastic material property of the damping felt effectively dissipates the impact energy under the action of the explosion shock wave, reduces the vibration amplitude of the wall structure, reduces the structural damage caused by vibration, and improves the impact stability of the blast wall; at the same time, the damping felt can efficiently absorb and attenuate noise sound waves due to its special porous structure, and provide a safe and comfortable acoustic environment.

[0030] (3) Efficient construction. The blast wall realizes the efficiency and standardization of the construction process by virtue of the innovative prefabricated assembly construction process. Through the modular operation mode of factory prefabrication and on-site rapid assembly, the engineering construction period is greatly shortened, and the construction cost and labor input are effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic view of the cross section of the double-steel-plate concrete blast wall structure with sound insulation property;

[0032] Figure 2 is a schematic view of the structure of the shock absorber;

[0033] Figure 3 This is a schematic diagram of the openings in the first steel plate layer;

[0034] Figure 4 This is a schematic diagram of the openings in the second steel plate layer.

[0035] Reference numerals: 1. Square steel tube end column; 2. First polyurea layer; 3. First steel plate layer; 4. First damping felt layer; 5. Shock absorber; 6. Concrete layer; 7. Second polyurea layer; 8. Second steel plate layer; 9. Second damping felt layer; 10. Sleeve; 2-1. Long screw; 2-3. Short screw; 2-4. Polymer damping shock absorber block; 2-5. Shock absorber spring. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0037] Example 1

[0038] This embodiment provides a double-steel-plate concrete explosion-proof wall structure with sound insulation properties, such as... Figures 1-4 As shown, it includes: a pair of symmetrically arranged steel pipe end columns 1, and a first steel plate layer 3 and a second steel plate layer 8 arranged front and back;

[0039] The ease of construction with double steel plates is reflected in the degree of component prefabrication, on-site installation efficiency, and process complexity. A high-quality double steel plate system should meet the following characteristics: high factory prefabrication rate (e.g., uniform fabrication of the outer steel plate cavity), no need for on-site formwork, and simple and easy-to-operate connection node structure, thereby reducing labor costs and construction cycle. Conversely, if the steel plate structure is complex (e.g., excessively fine division of multiple cavities) or the installation of connectors is cumbersome (e.g., requiring extensive on-site welding), construction efficiency will be reduced.

[0040] The integrity of double-plate structures refers to the ability of the steel plate and concrete to work together, directly affecting the structure's load-bearing capacity, seismic resistance, and blast resistance. Good integrity requires that the steel plate and concrete exhibit no significant slippage or coordinated deformation under stress. For example, buckling of the steel plate can be restrained by connectors to prevent separation between the concrete and the steel plate. Insufficient integrity can lead to premature structural failure (such as local buckling of the steel plate causing concrete crushing), weakening the advantages of double-plate composite walls.

[0041] The outer sides of the first steel plate layer 3 and the second steel plate layer 8 are respectively sprayed with a first polyurea layer 2 and a second polyurea layer 7, and the inner sides are respectively covered with a first damping felt layer 4 and a second damping felt layer 9; a concrete layer 6 is filled between the first damping felt layer 4 and the second damping felt layer 9, and the first steel plate layer 3 and the second steel plate layer 8 are connected by a shock absorber 5.

[0042] The shock absorber 5 comprises a long screw rod 2-1, a short screw rod 2-3, a high-molecular damping shock rubber block 2-4, a shock absorbing spring 2-5, and a mounting seat. The long screw rod 2-1 is sleeved with a sleeve 10. The long screw rod 2-1 sequentially passes through the shock absorbing spring 2-5, the mounting seat, the high-molecular damping shock rubber block 2-4, and the sleeve 10 to form a series energy dissipation path. The short screw rod 2-3 sequentially passes through the first steel plate layer 3, the first damping felt layer 4, and the upper end of the mounting seat to fix the shock absorber 5 and the first steel plate layer 3 and the first damping felt layer 4. The outer diameter of the sleeve 10 is less than or equal to the diameter of the high-molecular damping shock rubber block 2-4. The cross section of the mounting seat is in the shape of an inverted "K", and the four sides of the mounting seat are in a closed structure to prevent the contact between the concrete and the spring. The mounting seat is composed of a steel plate.

[0043] The material of the high-molecular damping shock rubber block 2-4 is high-molecular damping rubber. The viscoelasticity of the high-molecular damping rubber can adjust the natural frequency of the wall structure to avoid the resonance amplification effect caused by the explosion shock wave.

[0044] The shock absorbing spring 2-5 has the following effects:

[0045] Under the action of the explosion impact load, the shock absorbing spring 2-5 is elastically deformed to convert part of the impact kinetic energy into elastic potential energy. The high-molecular damping shock rubber block 2-4 is arranged to dissipate energy through the friction of molecular chain segments. The shock absorbing spring 2-5 and the high-molecular damping shock rubber block 2-4 form double buffering protection to prevent the structure from appearing instantaneous stress concentration damage. In the specific embodiment, the square steel pipe end column 1 is fixed by welding with the first steel plate layer 3 and the second steel plate layer 8.

[0046] In the specific embodiment, the first polyurea layer 2 and the second polyurea layer 7 are high-strength elastomer coatings formed by spraying. The thickness of the first polyurea layer 2 and the second polyurea layer 7 is greater than or equal to 3 mm.

[0047] The polyurea coating can improve the impact resistance of the steel plate. The main reason is that the polyurea undergoes glass transition under high-speed impact, thereby absorbing a large amount of energy. Under the same surface density conditions, the blast resistance of the steel plate coated with polyurea is improved by about 15% to 25% compared with the simply thickened steel plate. This is because the polyurea delays the propagation of stress waves and suppresses the deformation of the steel plate, thereby reducing the plastic damage under the explosion load.

[0048] In the specific embodiment, the first damping felt layer 4 and the second damping felt layer 9 are viscoelastic porous materials with a thickness greater than or equal to 3 mm. The damping felt is a sound insulation material with high-density materials (such as iron powder, butyl rubber, rubber, etc.) as the core. The damping felt absorbs vibration energy through the viscoelastic molecular structure to convert sound waves into heat energy.

[0049] In the specific embodiment, the short screw rod 2-3 of the shock absorber 5 passes through the reserved bolt hole of the first steel plate layer 3 and the first damping felt layer 4, the long screw rod 2-1 of the shock absorber 5 passes through the reserved bolt hole of the second damping felt layer 9 and the second steel plate layer 8, and is anchored by a nut. The pull-in is performed by the screw rod and the nut cap, without welding, and the construction is convenient. At the same time, because it is a through pull-in, it can provide sufficient pull-in force and good integrity. Other connecting parts, such as bi-steel connecting parts, have sufficient pull-in force and can ensure the integrity of the wall body, but the welding operation is not convenient and the construction workload is large; the bolt type connecting part can be prefabricated and welded in the factory, and the construction is convenient and efficient, but when stressed, the bolt may be pulled out, which will affect the overall performance of the wall body; the partition type connecting part has good effect on the integrity of the wall body, but the partition welding operation is difficult and will adversely affect the construction process.

[0050] In the specific embodiment, the sleeve 10 is a circular tube for isolating the concrete layer 6 from the direct contact with the long screw rod 2-1. The sleeve 10 acts as a force transmission carrier to direct the explosion positive pressure shock wave acting on the steel plate to the high polymer damping shock absorbing rubber block 2-4. The shock absorbing rubber block 2-4 utilizes the viscoelastic properties of rubber to achieve the buffering and dissipation of the explosion instantaneous impact force.

[0051] At the same time, the sleeve 10 isolates the long screw rod 2-1 from the concrete to avoid the long screw rod 2-1 from being solidified by pouring. When the explosion enters the negative pressure stage, the elastic deformation of the compression shock absorbing spring 2-5 is generated to resist the damage of the negative pressure to the structure.

[0052] The embodiment also provides a construction method of a double-steel-plate concrete blast-resistant wall structure with sound insulation properties, comprising the following steps:

[0053] S1: welding the left and right symmetrically arranged square steel pipe end column 1 and the two ends of the first steel plate layer 3;

[0054] S2: pasting the first damping felt layer 4 on the inner side of the first steel plate layer 3;

[0055] S3: fixing the shock absorber 5 on the first steel plate layer 3 and the first damping felt layer 4 by the short screw rod 2-3 and the nut cap;

[0056] S4: sleeving the sleeve 10 on the long screw rod 2-1, and then fixing the second damping felt layer 9 and the second steel plate layer 8 by the long screw rod 2-1 and the nut, and then welding the two ends of the second steel plate layer 8 to the square steel pipe end column 1;

[0057] S5: spraying the first polyurea layer 2 and the second polyurea layer 7 on the outer sides of the first steel plate layer 3 and the second steel plate layer 8;

[0058] S6: pouring the concrete on the upper side of the wall body to form the concrete layer 6.

[0059] In the specific embodiment, in S5, the first polyurea layer 2 and the second polyurea layer 7 are sprayed by using a high-pressure spraying process.

[0060] In the specific embodiment, the concrete layer 6 is self-compacting concrete.

[0061] The polyurea layer sprayed on the outer side of the steel plate has high strength, high toughness and excellent impact resistance, can effectively dissipate the energy of the explosion shock wave, prevent local deformation or tearing of the steel plate, and improve the overall blast resistance. Damper synergistic energy consumption: the high-molecular damping rubber block and the damping spring in the damper synergistically work when the explosion shock occurs, absorbing energy through viscoelastic deformation and elastic buffering, greatly reducing the vibration amplitude of the wall and enhancing the dynamic stability. Overall structure strengthening: the long screw and the short screw of the damper connect the double steel plate layers, improve the integrity of the wall, and avoid the problem of insufficient synergy of traditional blast-resistant walls under explosion load.

[0062] Double sound insulation of damping felt layer: the damping felt layer arranged on the inner side of the steel plate efficiently absorbs sound wave energy through its porous structure and viscoelastic properties, and blocks the noise propagation path, especially suitable for places such as chemical industry and energy industry that need to control noise. Compound structure blocks sound bridge: the concrete interlayer, double steel plate and damping felt form a multiple sound insulation barrier, reducing the transmission of sound waves through gaps or holes, and achieving better acoustic performance.

[0063] By prefabricating components such as square steel pipe end columns and steel plate layers in the factory and welding and assembling them on site, the construction period is greatly shortened and the labor cost is reduced. The polyurea coating is sprayed and cured quickly at room temperature without the need for complex maintenance, making it more efficient than traditional protective layer construction. The steel plate layer has pre-drilled bolt holes, and the damper is installed in precise alignment, reducing on-site adjustments and ensuring construction quality.

[0064] The embodiment integrates blast resistance and sound insulation, and the traditional blast-resistant wall often needs to be additionally installed with a sound insulation layer. However, the embodiment simultaneously meets the requirements of blast resistance and sound insulation through the combination of damping felt, dampers and concrete interlayers, saving space and materials. The thickness of the polyurea, the type of the damping felt or the parameters of the damper can be adjusted according to the engineering requirements to adapt to different explosion levels or noise standards.

[0065] Components not described in detail in the embodiment are existing components that can be purchased in the public channel.

[0066] The above description of the embodiments is for the convenience of those skilled in the art to understand and use the invention. Those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described herein to other embodiments without creative labor. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art within the scope of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A double-steel-plate concrete blast wall structure having soundproofing properties, characterized by, It comprises: a square steel pipe end column (1) arranged symmetrically left and right, a first steel plate layer (3) and a second steel plate layer (8) arranged front and back; The outer side of the first steel plate layer (3) and the second steel plate layer (8) is respectively sprayed with a first polyurea layer (2) and a second polyurea layer (7), and the inner side is respectively pasted with a first damping felt layer (4) and a second damping felt layer (9); The first damping felt layer (4) and the second damping felt layer (9) are filled with a concrete layer (6), and the first steel plate layer (3) and the second steel plate layer (8) are connected through a shock absorber (5); The shock absorber (5) comprises: a long screw rod (2-1), a short screw rod (2-3), a high polymer damping shock rubber block (2-4), a damping spring (2-5) and a mounting seat; The long screw rod (2-1) is sleeved with a sleeve (10); The long screw rod (2-1) passes through: the damping spring (2-5), the mounting seat, the high polymer damping shock rubber block (2-4), the sleeve (10) in sequence, forming a series energy dissipation path; The short screw rod (2-3) passes through the first steel plate layer (3), the first damping felt layer (4) and the upper end of the mounting seat in sequence, used for fixing the shock absorber (5) and the first steel plate layer (3), the first damping felt layer (4); The outer diameter of the sleeve (10) is less than or equal to the diameter of the high polymer damping shock rubber block (2-4).

2. The double-steel plate concrete blast wall structure having soundproofing characteristics according to claim 1, characterized in that, The square steel pipe end column (1) is fixed with the first steel plate layer (3) and the second steel plate layer (8) through welding respectively.

3. The double-steel plate concrete blast wall structure having soundproofing characteristics according to claim 1, characterized in that, The first polyurea layer (2) and the second polyurea layer (7) are high-strength elastomer coatings formed by spraying, and the thickness of the first polyurea layer (2) and the second polyurea layer (7) is greater than or equal to 3 mm.

4. The double-steel plate concrete blast wall structure having soundproofing characteristics according to claim 1, characterized in that, The first damping felt layer (4) and the second damping felt layer (9) are viscoelastic porous materials, and the thickness is greater than or equal to 3 mm.

5. The double-steel plate concrete blast wall structure having soundproofing characteristics according to claim 1, characterized in that, The short screw rod (2-3) of the shock absorber (5) passes through the reserved bolt hole of the first steel plate layer (3) and the first damping felt layer (4), and the long screw rod (2-1) of the shock absorber (5) passes through the reserved bolt hole of the second damping felt layer (9) and the second steel plate layer (8), and is anchored through a nut.

6. The double-steel plate concrete blast wall structure having soundproofing characteristics according to claim 1, characterized in that, The sleeve (10) is a circular tube for isolating the direct contact between the concrete layer (6) and the long screw rod (2-1).

7. The double-steel plate concrete blast wall structure having soundproofing characteristics according to claim 1, characterized in that, The cross section of the mounting seat is inverted "several" character shape, and the four sides of the mounting seat are closed structure, preventing the contact between the concrete and the spring, and the mounting seat is composed of steel plate.

8. A construction method of a double-steel-plate concrete blast wall structure having soundproofing characteristics according to any one of claims 1 to 7, characterized in that, It comprises the following steps: S1: welding the square steel pipe end column (1) and the first steel plate layer (3) arranged symmetrically left and right at both ends; S2: pasting the first damping felt layer (4) on the inner side of the first steel plate layer (3); S3: fixing the shock absorber (5) on the first steel plate layer (3) and the first damping felt layer (4) through the short screw rod (2-3) and the nut; S4: sleeving the sleeve (10) on the long screw rod (2-1), then fixing the second damping felt layer (9) and the second steel plate layer (8) through the nut by the long screw rod (2-1), and then welding the two ends of the second steel plate layer (8) on the square steel pipe end column (1); S5: spraying the first polyurea layer (2) and the second polyurea layer (7) on the outer side of the first steel plate layer (3) and the second steel plate layer (8); S6: pouring concrete on the upper side of the wall body to form a concrete layer (6).

9. The construction method of a double-steel plate concrete blast wall structure having soundproofing characteristics according to claim 8, characterized in that, In S5, the first polyurea layer (2) and the second polyurea layer (7) are applied by means of a high-pressure spraying process.

10. The construction method of a double-steel plate concrete blast wall structure having soundproofing characteristics according to claim 8, characterized in that, The concrete layer (6) is a self-compacting concrete.

Images