A hybrid cross-laid super-structured sound barrier screen structure

Abstract

This utility model relates to a cross-arranged hybrid metastructure sound barrier structure, comprising a perforated panel (1), a metastructure module (2), and an assembly base (3) arranged sequentially. The perforated panel (1) includes a cross-arranged large-aperture panel (11) and a small-aperture panel (12). The metastructure module (2) includes a cross-arranged metastructure cotton module (21) and a low-frequency module (22). The assembly base (3) includes a cross-arranged metastructure cotton fixing base (31) and a low-frequency module fixing base (32). Compared with the prior art, this utility model uses lightweight composite acoustic metastructure materials and combines a hybrid design of irregularly shaped perforated panels, metastructure modules, and an assembly base to achieve wideband sound absorption and sound insulation, significantly improving noise control capabilities. At the same time, modular assembly helps reduce overall costs and is suitable for noise reduction needs in scenarios such as rail transit and elevated bridges.

Description

Technical Field

[0001] This utility model relates to the field of sound barrier technology, and in particular to a hybrid metastructure sound barrier screen structure with cross-arranged components. Background Technology

[0002] With the increasing density of urban roads, noise pollution from vehicles is becoming increasingly prominent, especially low-frequency noise, which has a long wavelength and strong diffraction ability, making traditional sound barriers have limited attenuation effects. Existing sound barriers mostly adopt impedance composite structures, but the sound-absorbing materials are mainly glass wool and rock wool, which have problems such as low low-frequency sound absorption efficiency, high material density, and susceptibility to moisture and aging.

[0003] Currently, metamaterial sound barrier technology has solved the bottlenecks of traditional sound barriers in low-frequency noise reduction, structural vibration suppression and lightweighting by integrating low-frequency metamaterials, gradient sound-absorbing layers and intelligent design. However, it has weak low-frequency noise reduction capability, low construction efficiency, poor material durability and insufficient coordination with other systems. Utility Model Content

[0004] The purpose of this invention is to provide a hybrid metamorphic sound barrier structure with cross-arranged components to achieve broadband sound absorption and sound insulation.

[0005] The purpose of this utility model can be achieved through the following technical solution: a cross-arranged hybrid metastructure sound barrier screen structure, including a perforated panel, a metastructure module and an assembly base arranged in sequence.

[0006] The perforated panel includes large-diameter panels and small-diameter panels arranged in a cross pattern;

[0007] The meta-module includes cross-arranged meta-cotton modules and low-frequency modules;

[0008] The assembly base includes cross-arranged superstructure cotton fixing bases and low-frequency module fixing bases.

[0009] Preferably, the superstructure cotton module and the low-frequency module are in close contact.

[0010] Preferably, the large-aperture panel corresponds to the microfiber cotton module, and the microfiber cotton module corresponds to the microfiber cotton fixing base.

[0011] More preferably, the superstructure cotton module is in close contact with the large-aperture panel.

[0012] Preferably, the small-aperture panel corresponds to the low-frequency module, and the low-frequency module corresponds to the low-frequency module fixing base.

[0013] More preferably, a cavity is left between the low-frequency module and the small-aperture panel.

[0014] Preferably, the large-aperture panel and the small-aperture panel have the same cross-sectional dimensions.

[0015] Preferably, the cross-sectional dimensions of the superstructure cotton module and the low-frequency module are the same.

[0016] Preferably, the cross-sectional dimensions of the superstructure cotton fixing base and the low-frequency module fixing base are the same.

[0017] Preferably, the cross-sectional dimensions of the large-aperture panel, the small-aperture panel, the microfiber cotton module, the low-frequency module, the microfiber cotton fixing base, and the low-frequency module fixing base are the same.

[0018] Preferably, the plurality of large-aperture panels and small-aperture panels are arranged in a checkerboard pattern.

[0019] Multiple of the aforementioned superstructure cotton modules and low-frequency modules are arranged in a checkerboard pattern.

[0020] The multiple superstructure cotton fixing bases and low-frequency module fixing bases are arranged in a checkerboard pattern.

[0021] More preferably, the ten large-aperture panels and the ten small-aperture panels are arranged in a 2×5 checkerboard pattern, with five large-aperture panels and five small-aperture panels distributed in each row at intervals.

[0022] Preferably, the metamaterial module includes four groups of metamaterials, each group of metamaterials including a first layer of metamaterials, a second layer of metamaterials and a third layer of metamaterials arranged sequentially.

[0023] More preferably, the first layer, the second layer, and the third layer of the superstructured cotton are all provided with openings, and the opening sizes decrease sequentially.

[0024] More preferably, the opening is a square hole.

[0025] More preferably, the cross-sectional shape of the first layer, the second layer, and the third layer of the superstructured cotton is square.

[0026] More preferably, the first layer, the second layer, and the third layer of the metamaterial are made of glass fiber material.

[0027] More preferably, the third layer of the superstructured cotton is mounted on the superstructured cotton fixing base.

[0028] More preferably, the four groups of metastructured cotton are arranged in a 2×2 pattern.

[0029] Preferably, the low-frequency module includes four sets of low-frequency structures, each set of low-frequency structures including a low-frequency module panel, a low-frequency module sound-absorbing hole, a low-frequency module cavity, and a low-frequency module base plate;

[0030] The low-frequency module cavity has a low-frequency module surface on one side and a low-frequency module base plate on the other side. The low-frequency module panel and the low-frequency module cavity are provided with low-frequency module sound-absorbing holes.

[0031] More preferably, the low-frequency module cavity is rectangular.

[0032] In this invention, the length and width of the low-frequency module cavity are designed according to the specific sound absorption frequency band, and together with the sound absorption holes of the low-frequency module, they form a single Helmholtz-type sound absorber.

[0033] More preferably, the low-frequency module has a waterproof chamfer on its sound-absorbing holes.

[0034] More preferably, the surface of the sound-absorbing holes in the low-frequency module is covered with a mesh.

[0035] More preferably, the cross-sectional shape of the low-frequency module cavity is square.

[0036] More preferably, the low-frequency module base plate is detachably mounted on the low-frequency module fixing base.

[0037] More preferably, the four low-frequency structures are arranged in a 2×2 configuration.

[0038] Preferably, the surface of the super-structured cotton fixing base is smooth, and the surrounding area is provided with connecting grooves and protrusions.

[0039] Preferably, the surface of the low-frequency module fixing base is provided with a groove for fixing the low-frequency module, and the surrounding area is provided with connecting grooves and protrusions.

[0040] In this utility model, the super-structure cotton fixing base and the low-frequency module fixing base are detachably connected by grooves and protrusions around the perimeter.

[0041] Preferably, the surfaces of the superstructure cotton module and the low-frequency module are covered with a water-repellent fabric.

[0042] More preferably, the surfaces of the superstructure cotton module and the low-frequency module are covered with a layer of water-repellent fabric.

[0043] Preferably, the cross-arranged hybrid metastructure sound barrier screen structure further includes side plates and a back plate;

[0044] The side panels and back panel form a frame structure, and the perforated panel, meta-module and assembly base are set inside the frame structure.

[0045] More preferably, the perforated panel, the metastructure module, the mounting base, and the back plate are arranged in sequence.

[0046] More preferably, the back plate has thin plates facing forward and perpendicular to its surface on both the upper and lower sides.

[0047] More preferably, the back plate and the two side plates form a frame structure with a front opening.

[0048] More preferably, the side plate has a raised top and a recessed bottom, and thin plates perpendicular to the surface on both sides, with the same length as the perforated plate.

[0049] More preferably, the side profile of the back panel is the same as that of the side panel, ensuring a tight fit between the two.

[0050] Preferably, the perforated panel, side panel, and back panel are made of fire-resistant and corrosion-resistant thin metal sheet material.

[0051] More preferably, the perforated panel, side panel, and back panel are made of aluminum alloy sheet.

[0052] Preferably, the aperture of the large-aperture panel is 8-12 mm, and the aperture of the small-aperture panel is 3-7 mm.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] 1. This utility model combines the low-frequency sound absorption advantages of acoustic metamaterials with the wide-band characteristics of metamaterials, and achieves a hybrid metamaterial sound barrier structure design that can adapt to complex environments, with low cost, low thickness, and wide band through modular assembly.

[0055] 2. This utility model provides a cross-arranged hybrid metastructure sound barrier screen structure, which adopts a lightweight composite acoustic metastructure material and combines a perforated panel, metastructure module and assembly base in a hybrid design to achieve wideband sound absorption and sound insulation, and significantly improve noise control capability.

[0056] 4. The superstructure cotton of this utility model adopts a gradient aperture design to achieve mid-to-high frequency broadband sound absorption. The low-frequency module absorbs low-frequency noise through multi-cavity resonance. The two achieve impedance matching through the cavity layer to avoid sound wave reflection loss.

[0057] 5. The hybrid design of this utility model can reduce material redundancy, break through the weight limitations of traditional sound barriers, and reduce overall costs through large-scale production.

[0058] 6. The mesh cover design on the surface of the sound-absorbing holes of this utility model can prevent rainwater accumulation and is suitable for high humidity environments; the surface of the structural cotton is covered with water-repellent cloth to prevent fiber aging and shedding, thus extending its service life.

[0059] 7. The modular assembly base of this utility model supports rapid installation, and the open modular design allows for dynamic adjustment of the superstructure module configuration according to the noise spectrum, which can improve construction efficiency and coordination with other systems.

[0060] 8. The modular assembly of this utility model helps to reduce overall costs and is suitable for noise reduction needs in scenarios such as rail transit and elevated bridges.

[0061] 9. This utility model can achieve a wider sound absorption frequency range even at lower frequencies by connecting multiple Helmholtz sound absorbers in parallel.

[0062] 10. The hybrid metastructure sound barrier structure of this utility model can achieve an average sound absorption coefficient of over 0.9 in the 100-2000Hz range. Attached Figure Description

[0063] Figure 1 A schematic diagram of a hybrid metastructure sound barrier with cross-arranged components;

[0064] Figure 2 Schematic diagram of an irregularly shaped perforated panel;

[0065] Figure 3 This is a schematic diagram of a low-frequency module;

[0066] Figure 4 This is a schematic diagram of the superstructure cotton module;

[0067] Figure 5 Schematic diagram of the mounting base for the low-frequency module;

[0068] Figure 6 Schematic diagram of the fixing base for superstructured cotton;

[0069] Figure 7 This is a schematic diagram of the assembly base;

[0070] Figure 8 A schematic diagram of the assembly of the low-frequency module and its mounting base;

[0071] Figure 9 This is a schematic diagram of the side panel;

[0072] Figure 10 This is a schematic diagram of the back panel;

[0073] In the diagram: 1-Perforated panel, 11-Large aperture panel, 12-Small aperture panel, 2-Mega-module, 21-Mega-cotton module, 211-Mega-cotton first layer, 212-Mega-cotton second layer, 213-Mega-cotton third layer, 22-Low-frequency module, 221-Low-frequency module panel, 222-Low-frequency module sound-absorbing hole, 223-Low-frequency module cavity, 224-Low-frequency module base plate, 3-Assembly base, 31-Mega-cotton fixing base, 32-Low-frequency module fixing base, 4-Side plate, 5-Back plate. Detailed Implementation

[0074] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0075] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0076] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0077] Example 1

[0078] A hybrid metastructure sound barrier with cross-arranged components, such as Figures 1-2 As shown, it includes a perforated panel 1, a metastructure module 2, and an assembly base 3 arranged sequentially along the direction of noise wave transmission.

[0079] The perforated panel 1 includes multiple large-aperture panels 11 and multiple small-aperture panels 12; the meta-module 2 includes multiple meta-cotton modules 21 and multiple low-frequency modules 22; and the mounting base 3 includes multiple meta-cotton fixing bases 31 and multiple low-frequency module fixing bases 32. Furthermore, the large-aperture panels 11 and small-aperture panels 12 are arranged in a staggered pattern, the meta-cotton modules 21 and low-frequency modules 22 are arranged in a staggered pattern, and the meta-cotton fixing bases 31 and low-frequency module fixing bases 32 are arranged in a staggered pattern.

[0080] Example 2

[0081] A hybrid metastructure sound barrier structure with cross-arranged components includes a perforated panel 1 comprising ten large-aperture panels 11 and ten small-aperture panels 12, a metastructure module 2 comprising ten metastructure cotton modules 21 and ten low-frequency modules 22, and an assembly base 3 comprising ten metastructure cotton fixing bases 31 and ten low-frequency module fixing bases 32.

[0082] Ten large-aperture panels 11 and ten small-aperture panels 12 are arranged in a 2×5 checkerboard pattern. Ten super-structure cotton modules 21 and ten low-frequency modules 22, ten super-structure cotton fixing bases 31 and ten low-frequency module fixing bases 32 are also arranged in a 2×5 checkerboard pattern.

[0083] Among them, the large-aperture panel 11 corresponds to the super-structure cotton module 21, the super-structure cotton module 21 corresponds to the super-structure cotton fixing base 31, the small-aperture panel 12 corresponds to the low-frequency module 22, and the low-frequency module 22 corresponds to the low-frequency module fixing base 32.

[0084] Furthermore, the super-sized cotton module 21 is in close contact with the large-aperture panel 11 and is installed on the super-sized cotton fixing base 31, while the low-frequency module 22 has a cavity between it and the small-aperture panel 12 and is installed on the low-frequency module fixing base 32.

[0085] The rest is the same as in Example 1.

[0086] Example 3

[0087] A hybrid metastructure sound barrier structure with cross-arranged components, wherein each low-frequency module 22 includes four groups of 2×2 arranged low-frequency structures, such as... Figure 3 As shown, each low-frequency structure includes a low-frequency module panel 221, a low-frequency module sound-absorbing hole 222, and a low-frequency module cavity 223. The low-frequency module cavity 223 is provided with the low-frequency module panel 221 on the side close to the source of the noise sound wave, and the low-frequency module panel 221 and the low-frequency module cavity 223 are provided with low-frequency module sound-absorbing holes 222.

[0088] Each hypertextile module 21 includes four sets of hypertextiles, such as Figure 4 As shown, each group of superstructure cotton includes a first layer 211, a second layer 212, and a third layer 213 of superstructure cotton arranged in sequence. Each of the first layer 211, the second layer 212, and the third layer 213 of superstructure cotton has an opening in the center, and the size of the opening decreases sequentially.

[0089] like Figure 5 As shown, the surface of the low-frequency module mounting base 32 is provided with grooves, and the surrounding area is provided with connecting grooves and protrusions.

[0090] like Figure 6 As shown, the surface of the super-structured cotton fixing base 31 is smooth, and the surrounding area is provided with connecting grooves and protrusions.

[0091] like Figure 7 As shown, the low-frequency module fixing base 32 and the super-structure cotton fixing base 31 can be connected by grooves and protrusions around the perimeter to form a 2×5 checkerboard pattern.

[0092] The third layer 213 of the super-structured cotton is bonded to the smooth surface of the super-structured cotton fixing base 31, such as... Figure 8 As shown, the side of the low-frequency module cavity 223 away from the source of noise sound waves is detachably mounted on the surface groove of the low-frequency module fixing base 32 via the low-frequency module base plate 224.

[0093] Furthermore, in this embodiment, the cross-arranged hybrid metastructure sound barrier screen structure also includes side plates 4 and back plates 5. The side plates 4 and back plates 5 form a frame structure with an opening on one side close to the source of noise sound waves. The perforated panel 1, the metastructure module 2 and the assembly base 3 are disposed within this frame structure.

[0094] The rest is the same as in Example 2.

[0095] Example 4

[0096] A hybrid metastructure sound barrier structure with cross-arranged components includes an irregularly shaped perforated panel 1, a metastructure module 2, an assembly base 3, a side panel 4, and a back panel 5.

[0097] Among them, the irregular perforated panel 1 is divided into two types according to the size of the hole. The alloy plate is divided into two equal parts along the short side and ten equal parts along the long side. Each part has the same size, and the two hole sizes are arranged alternately.

[0098] The metamaterial module 2 includes a metamaterial cotton module 21 and a low-frequency module 22. The metamaterial cotton module 21 is composed of four identical sound-absorbing cotton pieces arranged in an array, and the low-frequency module 22 is composed of four sound-absorbing metamaterials arranged in an array.

[0099] The surfaces of the low-frequency module 22 and the super-structure cotton module 21 are covered with a layer of water-repellent cloth.

[0100] The assembly base 3 includes a microfiber cotton fixing base 31 and a low-frequency module fixing base 32. The microfiber cotton fixing base 31 has a smooth surface and connecting grooves and protrusions around its perimeter. The low-frequency module fixing base 32 has a fixing groove for the low-frequency module on its surface and connecting grooves and protrusions around its perimeter.

[0101] like Figure 9 As shown, the side plate 4 has a raised top and a recessed bottom, with thin plates perpendicular to the surface on both sides, and the length is the same as that of the perforated plate.

[0102] like Figure 10 As shown, the side profile of the back panel 5 is the same as that of the side panel 4, which ensures that the two fit together tightly.

[0103] Example 5

[0104] A hybrid metastructure sound barrier structure with cross-arranged components includes an irregularly shaped perforated panel 1, a metastructure module 2, an assembly base 3, a side panel 4, and a back panel 5.

[0105] Among them, the irregularly shaped perforated panel 1, the side panel 4 and the back panel 5 are made of fire-resistant and corrosion-resistant metal sheet materials, such as aluminum alloy sheet.

[0106] The superstructure module 2 includes a low-frequency module 22 and a superstructure cotton module 21, which are arranged in a cross-shaped and closely contacted manner. The low-frequency module 22 corresponds to the small-diameter panel 12 of the irregular perforated panel and has a certain cavity with the irregular perforated panel. The superstructure cotton module 21 corresponds to the large-diameter panel 11 of the irregular perforated panel and is in close contact with the irregular perforated panel.

[0107] The structural parameters of the 22 low-frequency modules are not entirely the same. The noise reduction frequency band is designed with the track or road radiated noise frequency as the target, and the functional unit model is designed to realize the broadband metastructure sound-absorbing acoustic metastructure material.

[0108] The low-frequency module 22 includes a low-frequency module panel 221, a low-frequency module cavity 223, a low-frequency module base plate 224, and low-frequency module sound-absorbing holes 222. It can be manufactured by injection molding, with a water-repellent cloth bonded to the surface. The low-frequency module sound-absorbing holes 222 have a certain chamfer to facilitate waterproofing. The low-frequency module cavity 223 has a square cross-section, and the cavity distribution is simple and easy to manufacture.

[0109] The length and width of the superstructure cotton module 21 are the same as those of the low-frequency module 22. The superstructure cotton module 21 consists of a first layer of superstructure cotton 211, a second layer of superstructure cotton 212, and a third layer of superstructure cotton 213. The aperture decreases from top to bottom (i.e. along the direction of noise sound wave transmission). The functional unit model is designed with the track or road-direction radiated noise frequency as the target noise reduction frequency band.

[0110] The super-structure cotton module 21 uses glass fiber material, is cut into rectangular units by high-pressure die-cutting, and is bonded into a composite structure by hot pressing. The surface is bonded with water-repellent cloth for easy waterproofing.

[0111] The assembly base 3 consists of a low-frequency module fixing base 32 and a super-structure cotton fixing base 31. The fixing base has slots on its side, which are arranged according to the arrangement of the super-structure modules. The super-structure cotton fixing base 31 corresponds to the super-structure cotton module 21 and is glued together after arrangement. The low-frequency module fixing base 32 corresponds to the low-frequency module 22 and is connected through slots after arrangement.

[0112] The low-frequency module fixing base 32 and the super-structure cotton fixing base 31 are made by injection molding. Their length and width are the same as those of the four spliced ​​low-frequency modules 22 and the four spliced ​​super-structure cotton modules 21.

[0113] Example 6

[0114] This embodiment describes a cross-arranged hybrid metastructure sound barrier screen structure with an outer dimension of 2000*450*139mm, including: an irregularly shaped perforated panel 1, a metastructure module 2, an assembly base 3, a side panel 4, and a back panel 5.

[0115] In this embodiment, the irregularly shaped perforated panel 1 is made of corrosion-resistant metal material. The metal panel is divided into two equal parts longitudinally and ten equal parts laterally, each part measuring 200mm × 200mm. Two types of holes of different diameters are arranged alternately in each part. The hole diameter of the large-diameter irregularly shaped perforated panel 11 is 10mm, and the hole diameter of the small-diameter irregularly shaped perforated panel 12 is 5mm.

[0116] In this embodiment, the irregularly shaped perforated panel 1 is made of 1mm thick aluminum alloy sheet, and the surface is treated with anti-corrosion.

[0117] In this embodiment, the low-frequency module 22 has individual dimensions of 100mm × 100mm × 50mm, and all three parts are injection molded. The aperture size of the low-frequency module panel 221 is the same as that of the low-frequency module sound-absorbing holes 222, and the cross-section of the low-frequency module cavity 223 is square. The aperture and cavity size of each unit are designed according to the designed sound absorption frequency band. The low-frequency modules 22 are grouped into sets of four and spliced ​​together with the low-frequency module base plate 224 and the low-frequency module fixing base 32, and covered with a water-repellent cloth.

[0118] In this embodiment, the structural parameters of the acoustic metamaterial units are not entirely the same. This embodiment targets the low-frequency radiation noise band of the orbit and designs the structural parameters of the units accordingly.

[0119] In this embodiment, the individual dimensions of the superstructure cotton module 21 are 100mm*100mm*100mm. The material used is three layers of glass fiber cotton, consisting of a first layer 211, a second layer 212, and a third layer 213. All three layers are identical in size, with internal square pores designed according to the sound absorption frequency band. They are arranged from top to bottom in descending order of pore size and then heat-pressed together. Four superstructure cotton modules 21 are grouped together on the superstructure cotton fixing base 31, and covered with a hydrophobic cloth.

[0120] In this embodiment, the structural cotton unit is designed with a three-layer unit structure targeting the high-frequency radiation noise band of the track.

[0121] In this embodiment, the super-structure cotton module 21 and the low-frequency module 22 are arranged according to the aperture of the irregular perforated panel 1. The super-structure cotton module 21 corresponds to the large aperture panel 11 of the irregular perforated panel, and the low-frequency module 22 corresponds to the small aperture panel 12 of the irregular perforated panel. This arrangement forms the super-structure module 2.

[0122] In this embodiment, the low-frequency module fixing base 32 and the superstructure cotton fixing base 31 are both 200*200mm in size and are injection molded. They are designed with connection slots and protrusions around their perimeter. The surface of the low-frequency module fixing base 31 is designed with protrusions for connecting with the low-frequency module base plate 224. The surface of the superstructure cotton fixing base 31 is smooth and is used for bonding with the superstructure cotton module 21. According to the arrangement of the superstructure cotton module 21 and the low-frequency module 22, the low-frequency module fixing base 32 corresponds to the low-frequency module 22, and the superstructure cotton fixing base 31 corresponds to the superstructure cotton module 21. They are spliced ​​together to form an assembly base 3.

[0123] The side panel 4 and the back panel 5 are made of lightweight and corrosion-resistant materials. They are formed by bending, and the outline of the side panel 4 is consistent with the side outline of the back panel 5.

[0124] In this embodiment, the side plate 4 and the back plate 5 are made of 1.0mm thick aluminum alloy sheet.

[0125] In this embodiment, the mounting base 3 is attached to the back plate 5. The connection method between the superstructure module 2 and the mounting base 3 is detailed in the above description of the connection method between the low frequency module fixing base 32 and the low frequency module 22 and the superstructure cotton fixing base 31 and the superstructure cotton module 21. The irregular perforated panel 1 is attached to the surface of the superstructure cotton module 21, and there is a certain cavity between it and the low frequency module 22. The side plate 4 is attached to the left and right sides of the back plate 5 and assembled by riveting. The upper and lower surfaces of the irregular perforated panel 1 are assembled to the back plate 5 by riveting.

[0126] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A hybrid metastructure sound barrier structure with cross-arranged components, characterized in that, It includes a perforated panel (1), a metastructure module (2), and an assembly base (3) arranged in sequence; The perforated panel (1) includes a large-diameter panel (11) and a small-diameter panel (12) arranged in a cross pattern; The meta-module (2) includes cross-arranged meta-cotton modules (21) and low-frequency modules (22); The assembly base (3) includes a cross-arranged superstructure cotton fixing base (31) and a low-frequency module fixing base (32).

2. The cross-arranged hybrid metastructure sound barrier structure according to claim 1, characterized in that, The large-aperture panel (11) corresponds to the super-structured cotton module (21), and the super-structured cotton module (21) corresponds to the super-structured cotton fixing base (31); The small aperture panel (12) corresponds to the low frequency module (22), and the low frequency module (22) corresponds to the low frequency module fixing base (32).

3. The cross-arranged hybrid metastructure sound barrier structure according to claim 2, characterized in that, The super-structured cotton module (21) is in close contact with the large-aperture panel (11); A cavity is left between the low-frequency module (22) and the small-aperture panel (12).

4. The cross-arranged hybrid metastructure sound barrier structure according to claim 1, characterized in that, Multiple large-aperture panels (11) and small-aperture panels (12) are arranged in a checkerboard pattern. Multiple of the aforementioned superstructure cotton modules (21) and low-frequency modules (22) are arranged in a checkerboard pattern. Multiple superstructure cotton fixing bases (31) and low frequency module fixing bases (32) are arranged in a checkerboard pattern.

5. The cross-arranged hybrid metastructure sound barrier structure according to claim 4, characterized in that, Ten large-aperture panels (11) and ten small-aperture panels (12) are arranged in a 2×5 checkerboard pattern, with five large-aperture panels (11) and five small-aperture panels (12) spaced apart in each row.

6. The cross-arranged hybrid metastructure sound barrier structure according to claim 1, characterized in that, The superstructure cotton module (21) includes four groups of superstructure cotton, each group of superstructure cotton including a first layer (211), a second layer (212) and a third layer (213) of superstructure cotton arranged in sequence; The first layer (211), the second layer (212), and the third layer (213) of the super-structured cotton are all provided with openings, and the opening sizes decrease sequentially. The third layer (213) of the superstructure cotton is installed on the superstructure cotton fixing base (31).

7. The cross-arranged hybrid metastructure sound barrier structure according to claim 1, characterized in that, The low-frequency module (22) includes four sets of low-frequency structures. Each set of low-frequency structures includes a low-frequency module panel (221), a low-frequency module sound-absorbing hole (222), a low-frequency module cavity (223), and a low-frequency module base plate (224). The low-frequency module cavity (223) has a low-frequency module panel (221) on one side and a low-frequency module base plate (224) on the other side. The low-frequency module panel (221) and the low-frequency module cavity (223) are provided with low-frequency module sound-absorbing holes (222). The low-frequency module base plate (224) is installed on the low-frequency module fixing base (32).

8. The cross-arranged hybrid metastructure sound barrier structure according to claim 1, characterized in that, The surface of the super-structured cotton fixing base (31) is smooth, and the surrounding area is provided with connecting grooves and protrusions; The surface of the low-frequency module fixing base (32) is provided with a groove for fixing the low-frequency module (22), and the surrounding area is provided with connecting grooves and protrusions.

9. The cross-arranged hybrid metastructure sound barrier structure according to claim 1, characterized in that, The surfaces of the superstructure cotton module (21) and the low-frequency module (22) are covered with hydrophobic fabric.

10. The cross-arranged hybrid metastructure sound barrier structure according to claim 1, characterized in that, It also includes side panels (4) and back panels (5); The side plate (4) and back plate (5) form a frame structure, and the perforated panel (1), the superstructure module (2) and the assembly base (3) are set inside the frame structure.

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