Combined sound barrier structure for expressway

Abstract

The utility model discloses an expressway combined sound barrier structure which comprises a stand column and a sound absorption assembly, and the sound absorption assembly is provided with a sound absorption hole plate, a first sound absorption plate and a second sound absorption plate which are overlapped from inside to outside. Sound-absorbing holes are formed in the sound-absorbing pore plate, an elastic buffer layer is arranged on the inner side of the sound-absorbing pore plate, and the first sound-absorbing plate is provided with a sound-absorbing material layer; a porous metal sound absorption layer is arranged on the inner side of the second sound absorption plate; the stand column is provided with a vertical inserting groove matched with the sound absorption assembly, the vertical inserting groove comprises a first inserting groove matched with the sound absorption hole plate and a second inserting groove matched with the second sound absorption plate, and the first sound absorption plate is clamped between the sound absorption hole plate and the second sound absorption plate. The combined sound barrier structure for the expressway is simple in structure, low in processing and manufacturing cost, convenient to disassemble and assemble and good in sound absorption effect, solves the technical problem that in the prior art, sound absorption materials filled in the sound barrier structure cannot be replaced independently, and has high practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of highway sound barrier, specifically, relate to highway combined sound barrier structure. BACKGROUND

[0002] Sound barrier is a kind of acoustic barrier specially designed between noise source and sound receiving point, mainly used for highway, highway, elevated composite road and other noise source sound insulation and noise reduction. Especially with the increasing coverage of highway, the mileage and the traffic flow, the traffic noise generated thereby causes serious influence on the normal life of residents along the line, so it is necessary to set up sound barrier on both sides of highway to achieve the purpose of noise reduction.

[0003] The structure of highway sound barrier is mainly composed of foundation part, column and sound absorption board (or called barrier board). The foundation part is the root of sound barrier, usually made of concrete or other solid materials to ensure the stability and wind resistance of the whole structure. The column is the main component of supporting sound barrier board, usually made of steel and treated by corrosion to prolong service life. The column needs to be embedded in the foundation to ensure its sufficient firmness. The sound absorption board is the main part of sound barrier, mainly playing the role of sound insulation and noise reduction. The sound absorption board is connected with the column at both ends.

[0004] Combined sound barrier is a new type of sound barrier structure that can improve construction efficiency and reduce manufacturing and transportation costs. Usually, the sound absorption board of combined sound barrier is provided with a protrusion at both ends, and a corresponding slot is provided on the column. The assembly is realized by the cooperation of the protrusion and the slot. This installation method not only makes installation and replacement more convenient, but also avoids the problem of rainwater corrosion and rusting of traditional bolts, nuts and other fasteners. Among them, the sound absorption board is usually an aluminum alloy plate, galvanized steel plate and the like filled with sound absorption material, which is prefabricated in the factory. Once the sound absorption material inside the sound absorption board loses the sound absorption function due to rainwater infiltration and needs to be replaced, the sound absorption board usually needs to be replaced as a whole, resulting in high maintenance cost. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a highway combined sound barrier structure to solve the technical problem that the internally filled sound absorption material cannot be replaced individually in the prior art.

[0006] In order to achieve the above purpose, the utility model provides a highway combined sound barrier structure, and the technical scheme is as follows:

[0007] The utility model provides a highway combined sound barrier structure, including stand and sound absorption subassembly, the sound absorption subassembly has from inside to outside the sound absorption orifice plate, first sound absorption board and second sound absorption board of overlap placement, be equipped with sound absorption orifice on the sound absorption orifice plate, the inboard of sound absorption orifice plate is equipped with elastic buffer layer, the first sound absorption board has sound absorption material layer, the inboard of second sound absorption board is equipped with porous metal sound absorption layer, the stand has with sound absorption subassembly adaptation vertical slot, the vertical slot includes with sound absorption orifice plate adaptation first slot and with second sound absorption board adaptation second slot, the first sound absorption board is clamped between sound absorption orifice plate and second sound absorption board.

[0008] In the highway combined sound barrier structure of the utility model, first, the sound absorption subassembly has a combined structure, the internal sound absorption material layer can be replaced individually, and the maintenance cost is reduced, wherein, by setting the elastic buffer layer, the size deviation of the vertical slot and the sound absorption subassembly caused by the machining precision can be adapted, and the mutual coordination of the stand and the sound absorption subassembly is improved. Secondly, the sound absorption subassembly has multiple sound absorption layers, and the sound absorption effect can be significantly improved. It can be seen that the highway combined sound barrier structure of the utility model has the advantages of simple structure, low processing and manufacturing cost, easy disassembly and reassembly, good sound absorption effect, and solves the technical problem that the internal filling sound absorption material cannot be replaced individually in the prior art, and has strong practicality.

[0009] As a further improvement of the above-mentioned highway combined sound barrier structure: the sound absorption subassembly has a plurality of sound absorption units distributed from top to bottom, and an elastic sealing layer is provided between adjacent two sound absorption units. Thus, rainwater can be effectively prevented from seeping from the joint of adjacent sound absorption units, and the service life of the sound absorption board is prolonged.

[0010] As a further improvement of the above-mentioned highway combined sound barrier structure: the outer side of the sound absorption orifice plate is provided with a rainproof strip; and the body of the sound absorption orifice plate is a hollow aluminum alloy plate.

[0011] As a further improvement of the above-mentioned highway combined sound barrier structure: the elastic buffer layer is a rubber strip arranged at intervals from top to bottom, and the rubber strip is bonded to the body of the sound absorption orifice plate. Thus, the rubber strip can stably connect the sound absorption orifice plate and the first sound absorption board through small deformation, and at the same time form a small cavity; sound waves can be reflected multiple times inside the cavity, thereby increasing the propagation path of sound waves in the sound absorption board and enhancing the absorption effect of sound waves; the cavity can reduce the resonance frequency of the sound absorption board, so that it can effectively absorb sound in a lower frequency range, and the absorption effect of low-frequency noise is improved; the cavity can increase the sound absorption coefficient of the sound absorption board in multiple frequency ranges, and provide more extensive sound absorption performance.

[0012] As a further improvement of the above-mentioned combined sound barrier structure for expressway, the first sound-absorbing plate comprises a first wave-shaped metal mesh, a sound-absorbing material layer and a second wave-shaped metal mesh which are placed in a superposed manner from inside to outside. Similarly, the first wave-shaped metal mesh and the second wave-shaped metal mesh can also form the above-mentioned cavity. In addition, the wave-shaped metal mesh can increase the sound-absorbing area and thus improve the sound-absorbing effect.

[0013] As a further improvement of the above-mentioned combined sound barrier structure for expressway, the first wave-shaped metal mesh and the second wave-shaped metal mesh have a thickness of 0.5-2 mm and a porosity of 30-70%, and the sound-absorbing material layer is made of at least one of mineral wool, glass wool, polyurethane foam, cellulose material, rubber material and acoustic felt. Thus, the structure is simple, the cost is low and the processing and manufacturing are convenient.

[0014] As a further improvement of the above-mentioned combined sound barrier structure for expressway, the porous metal sound-absorbing layer is a foamed metal, and the body of the second sound-absorbing plate is a hollow aluminum alloy plate. The foamed metal has a certain sound-absorbing effect, and its porous structure can effectively weaken the propagation of sound and absorb part of the sound waves. In addition, the foamed metal is not only light and has high strength, but also can provide sound insulation while maintaining good mechanical properties.

[0015] As a further improvement of the above-mentioned combined sound barrier structure for expressway, the foamed metal is at least one of foamed aluminum, foamed nickel, foamed copper and foamed steel, the foamed metal has a thickness of 10-25 mm and a porosity of 70-90%, and the foamed metal and the body of the second sound-absorbing plate are welded. Thus, the structure is simple, the cost is low and the processing and manufacturing are convenient.

[0016] The utility model will be further described in connection with the drawings and specific embodiments. The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be known through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings which form a part of this utility model are intended to aid in the understanding of the utility model, and the content provided in the drawings and the related description in the utility model can be used to explain the utility model, but do not constitute improper limitation on the utility model.

[0018] In the drawings:

[0019] Figure 1 It is the plan view of the sound-absorbing assembly and the vertical column in the combined sound barrier structure for expressway of the utility model.

[0020] Figure 2 It is the sectional view of the sound-absorbing assembly, the top fixing assembly and the bottom fixing assembly in the combined sound barrier structure for expressway of the utility model.

[0021] The relevant marks in the above figures are:

[0022] 100 - post, 110 - vertical slot, 120 - first slot, 130 - second slot, 200 - sound absorption unit, 210 - body of sound absorption hole plate, 211 - elastic buffer layer, 212 - rainproof strip, 214 - sound absorption hole, 221 - first wave-shaped metal mesh, 222 - sound absorption material layer, 223 - second wave-shaped metal mesh, 230 - body of second sound absorption plate, 231 - porous metal sound absorption layer, 300 - elastic sealing layer, 410 - top plate, 510 - bottom plate, 520 - ground foundation. DETAILED DESCRIPTION

[0023] The present application will be described in connection with the preferred embodiments accompanied by the drawings. It will be appreciated by those skilled in the art that the present application can be practiced without specific details, which are provided to provide a thorough description of embodiments of the application. In the drawings:

[0024] The technical solutions and technical features provided in each part including the following description in the present application can be combined with each other without conflict.

[0025] In addition, the embodiments of the present application involved in the following description are generally only a part of the embodiments of the present application, not all the embodiments. Therefore, based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0026] Regarding the terms and units in the present application. The terms "include", "have" and any variations thereof in the specification and claims of the present application and related parts are intended to cover non-exclusive inclusion.

[0027] Figure 1 It is a top view of the post and sound absorption assembly in the highway combined sound barrier structure of the present application. Figure 2 It is a sectional view of the sound absorption assembly, top fixing assembly and bottom fixing assembly in the highway combined sound barrier structure of the present application.

[0028] As shown in Figures 1-2 The highway combined sound barrier structure comprises a post 100 and a sound absorption assembly. The sound absorption assembly has a plurality of sound absorption units 200 distributed from top to bottom, and each sound absorption unit 200 has a sound absorption hole plate, a first sound absorption plate and a second sound absorption plate placed from inside to outside. The post 100 has a vertical slot 110 adapted to the sound absorption assembly.

[0029] The sound absorption hole plate is provided with sound absorption holes 214, the inner side of the sound absorption hole plate is provided with an elastic buffer layer 211, and the outer side of the sound absorption hole plate is provided with a rain blocking strip 212; the body 210 of the sound absorption hole plate is a hollow aluminum alloy plate; the elastic buffer layer 211 is a rubber strip arranged in a top-to-bottom interval, and the rubber strip is bonded with the body 210 of the sound absorption hole plate.

[0030] The first sound absorption plate comprises a first wave-shaped metal net 221, a sound absorption material layer 222 and a second wave-shaped metal net 223 arranged in a top-to-bottom order; the thickness of the first wave-shaped metal net 221 and the second wave-shaped metal net 223 is 0.5-2 mm, and the porosity is 30-70%; the sound absorption material layer 222 adopts at least one of mineral wool, glass wool, polyurethane foam, cellulose material, rubber material and acoustic felt.

[0031] The inner side of the second sound absorption plate is provided with a porous metal sound absorption layer 231; the porous metal sound absorption layer 231 is a foam metal; the foam metal is at least one of foam aluminum, foam nickel, foam copper and foam steel; the thickness of the foam metal is 10-25 mm, and the porosity is 70-90%; the body 230 of the second sound absorption plate is a hollow aluminum alloy plate; and the foam metal and the body 230 of the second sound absorption plate are welded.

[0032] The vertical insertion slot 110 comprises a first insertion slot 120 matched with the sound absorption hole plate and a second insertion slot 130 matched with the second sound absorption plate, and the first sound absorption plate is clamped between the sound absorption hole plate and the second sound absorption plate.

[0033] An elastic sealing layer 300 is arranged between two adjacent sound absorption units 200, and the elastic sealing layer 300 is a rubber layer.

[0034] The bottom of the column 100 is provided with a bottom plate 510, in the installation, first, the bottom plate 510 of the column 100 is fixed on the ground foundation 520 (such as a concrete retaining wall, the ground) through a bolt, then the sound absorption unit 200 and the elastic sealing layer 300 are inserted between two adjacent columns 100, finally, a top plate 410 is fixed, and the top plate 410 and the top of the column 100 are connected in a detachable manner.

[0035] The related content of the utility model is described above. The ordinary skilled in the art can realize the utility model based on these descriptions. Based on the above content of the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor shall belong to the protection scope of the utility model.

Claims

1. A highway combined sound barrier structure, comprising a stand column (100) and a sound absorption assembly, characterized in that: the sound absorption assembly has sound absorption hole plates, first sound absorption plates and second sound absorption plates which are placed in a superimposed manner from inside to outside; the sound absorption hole plates are provided with sound absorption holes (214), and the inner side of the sound absorption hole plates is provided with an elastic buffer layer (211); the first sound absorption plates have sound absorption material layers (222); and the inner side of the second sound absorption plates is provided with a porous metal sound absorption layer (231); the stand column (100) has a vertical insertion slot (110) which is adapted to the sound absorption assembly, the vertical insertion slot (110) comprises a first insertion slot (120) which is adapted to the sound absorption hole plates and a second insertion slot (130) which is adapted to the second sound absorption plates, and the first sound absorption plates are clamped between the sound absorption hole plates and the second sound absorption plates.

2. The highway combination sound barrier structure of claim 1, wherein: The sound absorption assembly has a plurality of sound absorption units (200) which are distributed from top to bottom, and an elastic sealing layer (300) is arranged between adjacent two sound absorption units (200).

3. The highway combination sound barrier structure of claim 1, wherein: The outer side of the sound absorption hole plates is provided with a rain blocking strip (212); and the body (210) of the sound absorption hole plates is a hollow aluminum alloy plate.

4. The highway combination sound barrier structure of claim 1, wherein: The elastic buffer layer (211) is a rubber strip which is arranged in a spaced manner from top to bottom, and the rubber strip is bonded to the body (210) of the sound absorption hole plates.

5. The highway combination sound barrier structure of claim 1, wherein: The first sound absorption plates comprise first wave-shaped metal nets (221), sound absorption material layers (222) and second wave-shaped metal nets (223) which are placed in a superimposed manner from inside to outside.

6. The highway combination sound barrier structure of claim 1, wherein: The porous metal sound absorption layer (231) is a foamed metal; and the body (230) of the second sound absorption plates is a hollow aluminum alloy plate.

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