Sea sand acoustic board made of porous composite metamaterial

Abstract

The utility model relates to a fabricated building wallboard and the technical field of noise reduction thereof, in particular to a porous composite metamaterial sea sand acoustic board which comprises a wall body component, a main wall body, an auxiliary wall body connected with the main wall body, a sandwich board arranged in the main wall body and grouting holes formed in the surfaces of the main wall body and the auxiliary wall body. The fixing component comprises a side fixing plate connected with the wall body component, a main top fixing plate connected with the main wall body and an auxiliary top fixing plate connected with the auxiliary wall body; wherein the porous composite metamaterial sandwich layer is composed of a plurality of unit cells, and each unit cell comprises a polyester fiber board fixedly connected with the main wall body and the auxiliary wall body and an aluminum alloy insertion board arranged in the polyester fiber board. According to the utility model, the surface layers of the main wall body and the auxiliary wall body are the sea sand acoustic boards which are formed by polymerizing natural sand grains through a cementing material, so that the sound absorption design requirements of different frequency bands can be met by adjusting the pore size, the plate thickness and the sound absorption performance of the acoustic boards according to the size of the particle size of the sea sand.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled building wall panels and noise reduction thereof, and in particular to a sea sand sound-absorbing board of porous composite metamaterial. Background Art

[0002] The construction of coastal cities has been developing rapidly, and the scale of infrastructure is expanding. It is imperative to improve the comfort of the living environment of marine buildings. Existing research results show that the mechanical and working properties of sea sand materials meet the basic requirements of engineering and are a good green civil engineering material. The use of sea sand materials to prepare sound-absorbing wall panels for construction has the advantages of local materials, rich content, green environmental protection, and reduced engineering costs.

[0003] With the continuous advancement of urbanization, various noise sources are increasing. Ordinary building wall panels can no longer meet the needs of human comfort. Building wall panels not only need to meet the requirements of safety, applicability and durability, but also need to meet the functional requirements of noise reduction. Sound-absorbing panels are currently widely used in the construction industry, playing the role of sound absorption and noise reduction, providing people with a quieter and more comfortable environment. The assembly process of the common prefabricated sound-absorbing wall panels on the market is relatively cumbersome and the process is relatively complicated. At the same time, the prefabricated wall panels themselves are prone to local damage and are easily loosened or even peeled off by external forces. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above-mentioned problems of poor sound absorption effect and complicated assembly process, the present utility model is proposed.

[0006] Therefore, the utility model aims to provide a sea sand sound-absorbing board of porous composite metamaterial.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a sea sand sound-absorbing panel of porous composite metamaterial, comprising wall components, including a main wall, an auxiliary wall connected to the main wall, a porous composite metamaterial sandwich panel arranged in the main wall, and grouting holes opened on the surfaces of the main wall and the auxiliary wall; a fixing component, comprising a side fixing plate connected to the wall component, a main top fixing plate connected to the main wall, and an auxiliary top fixing plate connected to the auxiliary wall; wherein the surface layer of the main wall is a sea sand sound-absorbing panel, the sandwich panel is composed of a plurality of unit cells, and the unit cell comprises a polyester fiber board fixedly connected to the main wall and the auxiliary wall, and an aluminum alloy plug plate arranged in the polyester fiber board.

[0008] As a preferred solution of the sea sand sound-absorbing board of the porous composite metamaterial described in the utility model, the sandwich panel is composed of N unit cells with consistent structures and arranged periodically along the plane, and each of the unit cells is composed of a polyester fiber board and an aluminum alloy plug plate with a width increasing from top to bottom and inserted at equal intervals along the thickness direction of the polyester fiber board.

[0009] As a preferred solution of the sea sand sound-absorbing board of the porous composite metamaterial described in the utility model, the aluminum alloy plug plate is inserted along one side of the upper surface of each polyester fiber board, the length and thickness of each layer of the aluminum alloy plug plate are the same, and the insertion depth increases from top to bottom.

[0010] As a preferred solution of the sea sand sound-absorbing board of the porous composite metamaterial of the utility model, the unit cells are connected with each other and with the main wall and the auxiliary wall by gluing.

[0011] As a preferred solution of the sea sand sound-absorbing board of the porous composite metamaterial of the utility model, the first top positioning groove is provided on both the upper and lower surfaces of the main wall, the first side positioning groove is provided on one side of the main wall, the first connecting groove is provided inside the main wall, the first slot is provided on one side of the main wall, and the first positioning column and the first insert are fixedly connected to the other side of the main wall. The first insert includes a connecting plate body adapted to the first slot and a deformation cylinder adapted to the first connecting groove.

[0012] As a preferred solution of the sea sand sound-absorbing board of the porous composite metamaterial described in the utility model, wherein: the upper and lower surfaces of the auxiliary wall are both provided with a second top positioning groove, the two side surfaces of the auxiliary wall are both provided with a second side positioning groove, the inside of the auxiliary wall is provided with two second connecting grooves, and the two side surfaces of the auxiliary wall are both provided with a second slot.

[0013] As a preferred solution of the sea sand sound-absorbing board of the porous composite metamaterial described in the utility model, the side fixing plate includes a mounting plate body arranged on both sides of the wall component, a second positioning column arranged on the mounting plate body, a second insert arranged on the mounting plate body and a first connecting plate arranged on the mounting plate body.

[0014] As a preferred solution of the sea sand sound-absorbing board of the porous composite metamaterial described in the utility model, the main top fixing plate includes a first fixing plate body arranged on the upper and lower surfaces of the main wall, a first top positioning plate arranged on the first fixing plate body, a second connecting plate arranged on the first fixing plate body, and a first insertion tube arranged on the first fixing plate body.

[0015] As a preferred solution of the sea sand sound-absorbing board of the porous composite metamaterial described in the utility model, the auxiliary top fixing plate includes a second fixed plate body arranged on the upper and lower surfaces of the auxiliary wall, a second top positioning plate arranged on the second fixed plate body, top connecting grooves arranged at both ends of the second fixed plate body, and a second insertion tube arranged on the second fixed plate body.

[0016] As a preferred solution of the sea sand sound-absorbing board of the porous composite metamaterial described in the utility model, the first slot is connected to the first connecting slot, the second slot is connected to the second connecting slot, the first insert is adapted to the first slot, and the second insert is adapted to the second slot.

[0017] Beneficial effects of the utility model: The utility model increases the overall stability of the sandwich wall panel body through the coordinated arrangement of the side fixing plate 1, the side fixing plate 2 and the side fixing plate 3, prevents the sandwich wall panel from deforming or moving during use, and is conducive to maintaining the structural integrity and performance stability of the sandwich wall panel. At the same time, it is conducive to achieving large-scale, standardized, industrialized manufacturing, rapid and economical construction.

[0018] By setting up the main wall, auxiliary wall and sandwich panel, the main wall and auxiliary wall are each provided with two pieces, and the main wall and auxiliary wall are both sandwiched with sandwich panels in the middle, and the sandwich panels are composed of multiple single cells, each of which is composed of a polyester fiber board and multiple aluminum alloy inserts inserted into the polyester fiber board. A group of rigid aluminum alloy plates of different lengths are carefully inserted into the polyester fiber porous material board to form a super porous layer material. The super porous layer generates a low-frequency absorption peak by forming multiple slow waves, thereby improving the low-frequency sound absorption effect. The high sound absorption performance in the low-frequency range is mainly attributed to the global resonance formed by multiple slow waves on the thickness of the porous layer, while the enhanced sound absorption performance in the high-frequency range is attributed to the combined effect of the global resonance and the local resonance directly related to the size of the aluminum alloy insert. It has good sound insulation performance and can effectively absorb high and low frequency sounds. By setting fixed components, the wall panels can be conveniently assembled and connected and fixed to each other, so that they can be quickly assembled during construction.

[0019] By setting the sea sand sound-absorbing board surface layer, the sea sand sound-absorbing board surface layer is a hard sea sand sound-absorbing panel with a specific mesh number formed by selecting natural sand particles and polymerizing them through cementitious materials. The sound-absorbing panel refers to a plate-shaped material with sound absorption and noise reduction effects. According to the size of the sea sand particles, the pore size and the thickness of the board can be adjusted to adjust the sound insulation performance of the sound-absorbing board to meet the sound absorption design requirements of different frequency bands. When the sound wave comes, the sound-absorbing board surface layer will perform preliminary sound attenuation; after the sound wave passes through the sound-absorbing board surface layer to dissipate the sound wave energy, it will pass through the porous composite metamaterial sandwich layer for secondary sound attenuation, which can achieve a good sound absorption effect and help reduce the impact of noise on the acoustic environment in the building; and the other end face of the porous composite metamaterial sandwich layer is also composed of the sea sand sound-absorbing surface layer. The sea sand sound-absorbing surface layer and the porous composite metamaterial sandwich layer play a role in attenuating the noise transmitted in the air layer by layer, which can weaken the transmitted sound energy, block the propagation of noise, improve the sound insulation performance of the wall panel, and help reduce the impact of external noise on the acoustic environment in the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 This is an overall schematic diagram of a sea sand sound-absorbing panel made of porous composite metamaterial.

[0022] Figure 2 This is a schematic diagram of the structure of the main wall of a sea sand sound-absorbing panel made of porous composite metamaterial.

[0023] Figure 3 This is a schematic cross-sectional view of the main wall of a sea sand sound-absorbing panel made of a porous composite metamaterial.

[0024] Figure 4 This is a schematic cross-sectional view of the auxiliary wall of a sea sand sound-absorbing panel made of a porous composite metamaterial.

[0025] Figure 5 This is a schematic diagram of the structure of the side fixing plate of a sea sand sound-absorbing panel made of porous composite metamaterial.

[0026] Figure 6 This is a schematic diagram of the structure of the main top fixing plate of a sea sand sound-absorbing board made of porous composite metamaterials.

[0027] Figure 7 This is a schematic diagram of the structure of an auxiliary top fixing plate of a sea sand sound-absorbing panel made of porous composite metamaterial.

[0028] Figure 8 Schematic diagram of the structure of a porous composite metamaterial core layer unit cell of a sea sand sound-absorbing board of a porous composite metamaterial.

[0029] Fig. 9 This is a schematic diagram of the cross-sectional structure of a sea sand sound-absorbing panel made of a porous composite metamaterial.

[0030] Fig.10 Schematic diagram of the porous composite metamaterial core layer structure of a sea sand sound-absorbing board of a porous composite metamaterial.

[0031] Fig.11 This is a schematic diagram of the connection between the main wall, side fixing plate and main top fixing plate of a sea sand sound-absorbing panel made of a porous composite metamaterial. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0036] Example 1

[0037] Reference Figure 1-Figure 11, provides a schematic diagram of the overall structure of a sea sand sound-absorbing panel of a porous composite metamaterial, an assembled sea sand concrete sandwich wall panel, comprising a wall component 100, including a main wall 101, an auxiliary wall 102 connected to the main wall 101, a sandwich panel 103 arranged in the main wall 101, and grouting holes 104 opened on the surfaces of the main wall 101 and the auxiliary wall 102; a fixing component 200, including a side fixing plate 201 connected to the wall component 100, a main top fixing plate 202 connected to the main wall 101, and an auxiliary top fixing plate 203 connected to the auxiliary wall 102; wherein the sandwich panel 103 is composed of a plurality of unit cells, and the unit cell includes a polyester fiber board 103a fixedly connected to the main wall 101 and the auxiliary wall 102, and an aluminum alloy plug board 103b arranged in the polyester fiber board 103a.

[0038] Specifically, the main wall 101 and the auxiliary wall 102 are symmetrically arranged with two pieces about the sandwich panel 103. The two sides of the sandwich panel 103 are fixed to the main wall 101 and the auxiliary wall 102 by gluing. The main wall 101 and the auxiliary wall 102 are only different in structure, and the material and size are the same. The main wall 101 and the auxiliary wall 102 can be connected to each other. When multiple main walls 101 and auxiliary walls 102 are set, only one auxiliary wall 102 is set, and each adjacent main wall The main wall 101 and the auxiliary wall 102 are connected to each other, and the auxiliary wall 102 is connected to the main wall 101 at the end. The side fixing plate 201 can be connected to the main wall 101 and the auxiliary wall 102 to close the two ends of the main wall 101 and the auxiliary wall 102. The main top fixing plate 202 is installed at the upper and lower ends of the main wall 101, and the auxiliary top fixing plate 203 is installed at the upper and lower ends of the auxiliary wall 102. The main top fixing plate 202 and the auxiliary top fixing plate 203 are connected to each other and can be connected to the side fixing plate 201.

[0039] Furthermore, the surface layers of the main wall 101 and the auxiliary wall 102 are both sea sand sound absorbing board surface layers, which are hard sea sand sound absorbing panels of a specific mesh size formed by selecting natural sea sand particles aggregated by cementitious materials.

[0040] Furthermore, the sandwich panel 103 is composed of N unit cells with consistent structures and arranged periodically along the plane. Each unit cell is composed of a polyester fiber board 103a and aluminum alloy inserts 103b with increasing widths from top to bottom and inserted at equal intervals along the thickness direction of the polyester fiber board 103a. At the same time, the main wall 101 is bonded to both sides of the unit cell through a gel layer 103c.

[0041] Furthermore, the aluminum alloy insert plates 103b are inserted along one side of the upper surface of each polyester fiber board 103a, and each layer of the aluminum alloy insert plates 103b has the same length and thickness, and the insertion depth increases from top to bottom.

[0042] Furthermore, each unit cell and each unit cell and the main wall 101 and the auxiliary wall 102 are connected by adhesive.

[0043] Specifically, the surface layers of the main wall 101 and the auxiliary wall 102 are both made of selected natural sand particles, which are aggregated by cementitious materials to form a hard sea sand sound-absorbing panel with a specific mesh size. The sound insulation performance of the sound-absorbing panel can be adjusted according to the size of the sea sand particles, by adjusting the pore size and the thickness of the board, to meet the sound absorption design requirements of different frequency bands. At the same time, the porous material exhibits high sound absorption performance characteristics in the medium and high frequency broadband range. Combining the design principle of acoustic metamaterials and traditional porous materials, it is designed as a composite structure with high sound absorption performance in a wide frequency range to improve the overall sound insulation of the structure. A group of rigid aluminum alloy inserts 103b of different lengths are carefully inserted into the polyester fiber board 103a porous material board to form a super porous layer material. The super porous layer generates a low-frequency absorption peak by forming multiple slow waves, thereby improving the low-frequency sound absorption effect. The high sound absorption performance in the low-frequency range is mainly attributed to the global resonance formed by multiple slow waves on the thickness of the porous layer, while the enhanced sound absorption performance in the high-frequency range is attributed to the combined effect of the global resonance and the local resonance directly related to the size of the inserted partition.

[0044] Operation process: During production, the sandwich panel 103 is clamped between the main wall 101 and the auxiliary wall 102, and the sandwich panel 103 and the wall are fixed by glue. Then, the main walls 101 are connected to each other, and finally the auxiliary wall 102 is connected to the main wall 101. The side fixing plates 201, the main top fixing plates 202 and the auxiliary top fixing plates 203 are connected to the main wall 101 and the auxiliary wall 102 to assemble a whole wall. Concrete is poured through the grouting holes 104. After the concrete solidifies, the side fixing plates 201, the main top fixing plates 202 and the auxiliary top fixing plates 203 can be fixed to the wall. When in use, the noise is absorbed by the polyester fiber board 103a and the aluminum alloy plug plate 103b in the sandwich panel 103.

[0045] Example 2

[0046] Reference Figure 2-Figure 5 This embodiment is different from the first embodiment in that: a first top positioning groove 101a is provided on both the upper and lower surfaces of the main wall 101, a first side positioning groove 101b is provided on one side of the main wall 101, a first connecting groove 101c is provided inside the main wall 101, a first slot 101d is also provided on one side of the main wall 101, and a first positioning column 101e and a first insert 101f are fixedly connected to the other side of the main wall 101, wherein the first insert 101f includes a connecting plate body adapted to the first slot 101d and a deformation cylinder adapted to the first connecting groove 101c.

[0047] Specifically, two first top positioning grooves 101a are provided, the first side positioning groove 101b and the first slot 101d are both provided on one side of the main wall 101, two first side positioning grooves 101b are symmetrically provided about the first slot 101d, the first connecting groove 101c is a circular through groove opened in the main wall 101, penetrating the main wall 101 up and down, the first slot 101d is provided on the side surface of the main wall 101, one end of the first slot 101d penetrates the main wall 101, and the other end is connected to the first connecting groove 101c, and the first insert 101f is provided on the other side of the main wall 101.

[0048] Furthermore, a second top positioning groove 102a is provided on both the upper and lower surfaces of the auxiliary wall 102, a second side positioning groove 102b is provided on both the side surfaces of the auxiliary wall 102, two second connecting grooves 102c are provided inside the auxiliary wall 102, and a second slot 102d is provided on both the side surfaces of the auxiliary wall 102. The second top positioning groove 102a has the same size and shape as the first top positioning groove 101a, the second side positioning groove 102b has the same size and shape as the first side positioning groove 101b, the second connecting groove 102c has the same shape and size as the first connecting groove 101c, the second slot 102d has the same shape and size as the first slot 101d, and the second slot 102d is connected to the second connecting groove 102c.

[0049] Furthermore, the side fixing plate 201 includes a mounting plate body 201a disposed on both sides of the wall component 100, a second positioning column 201b disposed on the mounting plate body 201a, a second insert 201c disposed on the mounting plate body 201a, and a first connecting plate 201d disposed on the mounting plate body 201a, the first positioning column 101e is plugged into the second side positioning groove 102b, the first insert 101f is inserted into the slot, and the first insert 101f is plugged into the second connecting groove 102c is adapted, the slot width is smaller than the diameter of the connecting slot, the first insert 101f includes two components, one part is a connecting plate body, and the other part is made of an elliptical deformable material. The first insert 101f enters the second connecting slot 102c after being inserted through the second slot 102d. As the main wall 101 approaches the auxiliary wall 102, the elliptical part of the first insert 101f will press against the inner wall of the second connecting slot 102c and deform, thereby being stuck in the second connecting slot 102c.

[0050] The rest of the structure is the same as that of Example 1.

[0051] Operation process: When in use, the main wall 101 and the auxiliary wall 102 are spliced ​​together, so that the first positioning column 101e and the first insert 101f on the main wall 101 are inserted into the second side positioning groove 102b and the second slot 102d of the auxiliary wall 102. As the main wall 101 and the auxiliary wall 102 gradually approach each other, the first positioning column 101e will be completely inserted into the second side positioning groove 102b, and the first insert 101f will enter the second connecting groove 102c from the second slot 102d and be squeezed and deformed, thereby being stuck in the second connecting groove 102c. Subsequently, the second positioning columns 201b of each side fixing plate 201 are inserted into each side positioning groove of the main wall 101 and the auxiliary wall 102, and the second insert 201c on the side fixing plate 201 is inserted into the connecting groove of the main wall 101 and the auxiliary wall 102, so that the main wall 101, the auxiliary wall 102 and the side fixing plate 201 can be connected.

[0052] Example 3

[0053] Reference Figure 6-Figure 7 This embodiment is different from the above embodiments in that the main top fixing plate 202 includes a first fixing plate body 202a arranged on the upper and lower surfaces of the main wall 101, a first top positioning plate 202b arranged on the first fixing plate body 202a, a second connecting plate 202c arranged on the first fixing plate body 202a, and a first insertion tube 202d arranged on the first fixing plate body 202a.

[0054] Specifically, the first top positioning plate 202b is adapted to the size and shape of each top positioning groove on the main wall 101 and the auxiliary wall 102, and is plugged in and matched. The main top fixing plate 202 can cover the upper surface of the main wall 101 and the sandwich panel 103, and the auxiliary top fixing plate 203 can cover the upper surface of the auxiliary wall 102 and the sandwich panel 103. Two first insertion tubes 202d are provided, and the first insertion tube 202d can be inserted into the first connecting groove 101c of the main wall 101. A top connecting groove 203c is provided at one end of the main top fixing plate 202 away from the second connecting plate 202c.

[0055] Furthermore, the auxiliary top fixing plate 203 includes a second fixed plate body 203a arranged on the upper and lower surfaces of the auxiliary wall 102, a second top positioning plate 203b arranged on the second fixed plate body 203a, a top connecting groove 203c arranged at both ends of the second fixed plate body 203a, and a second insertion tube 203d arranged on the second fixed plate body 203a. The auxiliary top fixing plate 203 has the same size and shape as the main top fixing plate 202. The difference between the auxiliary top fixing plate 203 and the main top fixing plate 202 is that there are two more second insertion tubes 203d.

[0056] Furthermore, the first slot 101d is connected to the first connection slot 101c, the second slot 102d is connected to the second connection slot 102c, the first inserting piece 101f is matched with the first slot 101d, and the second inserting piece 201c is matched with the second slot 102d.

[0057] The rest of the structure is the same as that of Example 2.

[0058] Operation process: The main top fixing plate 202 and the auxiliary top fixing plate 203 are connected to each other through the second connecting plate 202c and the top connecting groove 203c, and each insertion tube is inserted into each connecting groove of the main wall 101 and the auxiliary wall 102, and then the main top fixing plate 202 and the auxiliary top fixing plate 203 are connected to each other with the side fixing plates 201 on both sides through the top connecting groove 203c. Since the diameter of the insertion tube is smaller than the diameter of the connecting groove, the insertion tube is also inserted into the insert after being inserted into the connecting groove. The insertion tube and the insert are both provided with mesh holes. At this time, concrete is poured into each connecting groove through the grouting hole 104. When the concrete solidifies, each side fixing plate 201 and the top fixing plate can be firmly fixed on the main wall 101 and the auxiliary wall 102, and the main wall 101 and the auxiliary wall 102 are also connected and fixed to each other. When the device needs to be installed on a beam or column, the entire wall can be installed at one time through a connecting frame and expansion bolts.

[0059] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0060] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0061] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A porous composite metamaterial sea sand sound-absorbing board, characterized by: include, A wall component (100) comprises a main wall (101), an auxiliary wall (102) connected to the main wall (101), a porous composite metamaterial sandwich layer (103) arranged in the main wall (101), and grouting holes (104) opened on the surfaces of the main wall (101) and the auxiliary wall (102); A fixing component (200) comprising a side fixing plate (201) connected to the wall component (100), a main top fixing plate (202) connected to the main wall (101), and an auxiliary top fixing plate (203) connected to the auxiliary wall (102); The surface layer of the main wall (101) is a sea sand sound-absorbing board, and the porous composite metamaterial sandwich layer (103) is composed of a plurality of unit cells, wherein the unit cells include a polyester fiber board (103a) fixedly connected to the main wall (101) and the auxiliary wall (102), and an aluminum alloy plug board (103b) arranged in the polyester fiber board (103a).

2. The porous composite metamaterial sea sand sound-absorbing board according to claim 1, characterized in that: The porous composite metamaterial sandwich layer (103) is composed of N unit cells that are periodically arranged along a plane with consistent structures, and each unit cell is composed of a polyester fiber board (103a) and an aluminum alloy insert plate (103b) that is inserted at equal intervals along the thickness direction of the polyester fiber board (103a) and has a width that increases from top to bottom.

3. The porous composite metamaterial sea sand sound-absorbing board according to claim 2, characterized in that: The aluminum alloy insert plates (103b) are inserted along one side of the upper surface of each polyester fiber board (103a), and each layer of the aluminum alloy insert plates (103b) has the same length and thickness, and the insertion depth increases from top to bottom.

4. The porous composite metamaterial sea sand sound-absorbing board according to claim 3, characterized in that: Each of the unit cells and the unit cells and the main wall (101) and the auxiliary wall (102) are connected by gluing.

5. The porous composite metamaterial sea sand sound-absorbing board according to claim 4, characterized in that: The upper and lower surfaces of the main wall (101) are both provided with a first top positioning groove (101a); a side surface of the main wall (101) is provided with a first side positioning groove (101b); a first connecting groove (101c) is provided inside the main wall (101); a side surface of the main wall (101) is also provided with a first slot (101d); and the other side surface of the main wall (101) is fixedly connected with a first positioning column (101e) and a first insert (101f); Wherein, the first inserting member (101f) comprises a connecting plate body adapted to the first inserting slot (101d) and a deforming cylinder adapted to the first connecting groove (101c).

6. The porous composite metamaterial sea sand sound-absorbing board according to claim 5, characterized in that: The upper and lower surfaces of the auxiliary wall (102) are both provided with a second top positioning groove (102a), the side surfaces of the auxiliary wall (102) are both provided with a second side positioning groove (102b), the interior of the auxiliary wall (102) is provided with two second connecting grooves (102c), and the side surfaces of the auxiliary wall (102) are both provided with a second slot (102d).

7. The porous composite metamaterial sea sand sound-absorbing board according to claim 6, characterized in that: The side fixing plate (201) comprises a mounting plate body (201a) arranged on both sides of the wall component (100), a second positioning column (201b) arranged on the mounting plate body (201a), a second insert (201c) arranged on the mounting plate body (201a), and a first connecting plate (201d) arranged on the mounting plate body (201a).

8. The porous composite metamaterial sea sand sound-absorbing board according to claim 7, characterized in that: The main top fixing plate (202) comprises a first fixing plate body (202a) arranged on the upper and lower surfaces of the main wall body (101), a first top positioning plate (202b) arranged on the first fixing plate body (202a), a second connecting plate (202c) arranged on the first fixing plate body (202a), and a first insertion tube (202d) arranged on the first fixing plate body (202a).

9. The porous composite metamaterial sea sand sound-absorbing board according to claim 8, characterized in that: The auxiliary top fixing plate (203) comprises a second fixing plate body (203a) arranged on the upper and lower surfaces of the auxiliary wall body (102), a second top positioning plate (203b) arranged on the second fixing plate body (203a), top connecting grooves (203c) arranged at both ends of the second fixing plate body (203a), and a second insertion tube (203d) arranged on the second fixing plate body (203a).

10. The porous composite metamaterial sea sand sound-absorbing board according to claim 9, characterized in that: The first slot (101d) is connected to the first connecting slot (101c), the second slot (102d) is connected to the second connecting slot (102c), the first insert (101f) is matched with the first slot (101d), and the second insert (201c) is matched with the second slot (102d).

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