Screen body structure for rail transit sound barrier and assembly of screen body structure

Abstract

The utility model relates to a screen body structure for a rail transit sound barrier and a combination of the screen body structure, the screen body structure is a sound absorption configuration or a sound insulation configuration, and the screen body structure comprises a panel which is a sound absorption board panel or a sound insulation board panel; the reinforcing ribs are positioned below the panel and are used for enhancing the wind load resistance and the structural stability of the screen body; the functional layer is arranged below the reinforcing ribs and is used for realizing a sound absorption or sound insulation effect; and the shell comprises a side shell and a bottom shell and is used for protecting the side surface and the bottom surface of the screen body. Through organic combination of the panel, the reinforcing ribs, the functional layer and the shell, the screen body structure achieves excellent noise reduction performance, wind load resistance and lightweight design.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sound barrier technology, in particular to a screen body structure for rail transit sound barrier and its combination. BACKGROUND

[0002] With the acceleration of urbanization, rail transit as an efficient, environmentally friendly public transportation mode has been widely used in the global range. However, rail transit brings convenience to the city, but also produces significant noise pollution problem. The noise produced by train operation, especially when driving at high speed or entering and leaving the station, has an adverse effect on the quality of life and health of the surrounding residents. In order to alleviate this problem, sound barrier technology emerges as the times require, and becomes an effective means to reduce the influence of rail transit noise. The traditional sound barrier is mainly composed of foundation, column, screen body, fixing part and sealing part, and part also includes top structure. The screen body as the core part of the sound barrier, its performance directly affects the noise reduction effect. The existing sound barrier screen body mostly uses single material or structure, which is difficult to meet the noise reduction demand in different noise environment. In addition, the traditional sound barrier on the project has limitations in wind load capacity and structural stability. In order to increase the wind load capacity, the thickness of the plate is often increased, even if there is a reinforcing rib structure, the transverse rib, longitudinal rib or transverse and longitudinal combination rib is usually used, which improves the rigidity of the plate, but also greatly increases the weight of the plate.

[0003] It should be noted that the information disclosed in the above background section is only for understanding the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the utility model is to overcome the defects in the above background technology, and provide a screen body structure for rail transit sound barrier and its combination.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A screen body structure for rail transit sound barrier is provided for sound absorption or sound insulation, comprising:

[0007] The panel is a sound absorption panel or a sound insulation panel;

[0008] The reinforcing rib is located below the panel and is used to enhance the wind load capacity and structural stability of the screen body;

[0009] The functional layer is arranged below the reinforcing rib and is used to realize the sound absorption or sound insulation effect;

[0010] The shell includes a side shell and a bottom shell, and is used to protect the side and bottom of the screen body.

[0011] Further, the sound-absorbing panel is a metal perforated panel with a diameter of 0.05-5mm and a perforation rate of 0.1-40%.

[0012] Further, the functional layer comprises a porous material layer, a film layer, an air layer, a perforated panel and a baffle, wherein the perforation on the film layer is in the form of a circle or a slit, the diameter of the perforated panel is 0.05-1mm, the perforation rate is 0.1-10%, and there are at least two kinds of aperture or pitch.

[0013] Further, the sound-absorbing panel is a metal perforated panel with a diameter of 0.05-5mm and a perforation rate of 0.1-40%.

[0014] Further, the functional layer comprises a porous material layer, a film layer, an air layer, a perforated panel and a baffle, wherein the perforation on the film layer is in the form of a circle or a slit, the diameter of the perforated panel is 0.05-1mm, the perforation rate is 0.1-10%, and there are at least two kinds of aperture or pitch.

[0015] Further, the sound-absorbing panel is a metal perforated panel with a diameter of 0.05-5mm and a perforation rate of 0.1-40%.

[0016] Further, the sound-absorbing panel is a metal perforated panel with a diameter of 0.05-5mm and a perforation rate of 0.1-40%.

[0017] Further, the sound-absorbing panel is a metal perforated panel with a diameter of 0.05-5mm and a perforation rate of 0.1-40%.

[0018] Further, the sound-absorbing panel is a metal perforated panel with a diameter of 0.05-5mm and a perforation rate of 0.1-40%.

[0019] A screen body structure combination for a rail transit sound barrier comprises two or more screen body structures, wherein the sound-absorbing screen body structure and the sound-insulating screen body structure are stacked.

[0020] The utility model has the advantages of:

[0021] The utility model provides a rail transit sound barrier screen body structure, this screen body structure adopts sound absorption or sound insulation composite board material, realizes excellent noise reduction performance, structural stability and light weight design through the organic combination of panel, reinforcing rib, functional layer and shell. The panel adopts metal perforated plate or dense metal plate material to adapt to different acoustic requirements. The functional layer preferably comprises a porous material layer, a film layer, and an air layer, which can be adjusted in number and arrangement according to different noise reduction requirements to achieve targeted noise reduction and improve sound absorption or sound insulation effect. The reinforcing rib preferably adopts an X-shaped design, which enhances the wind load resistance and structural stability of the screen body. The X-shaped reinforcing rib design effectively enhances the wind load resistance of the screen body through the midpoint and corner point of the plate material, while avoiding excessive reinforcement and reducing the structural weight.

[0022] Different performance screen body plate materials can be combined, and sound insulation plate materials and sound absorption plate materials can be arranged in different combinations in height to achieve targeted noise reduction for different train noise spectra.

[0023] Other beneficial effects of the embodiments of the utility model will be further described below. DRAWINGS

[0024] Figure 1 The utility model discloses a screen body composite board material basic structure schematic diagram.

[0025] Figure 2 The utility model discloses a screen body sound absorption composite board material structure schematic diagram.

[0026] Figure 3 The utility model discloses a screen body sound insulation composite board material structure schematic diagram.

[0027] Figure 4 is an X-shaped reinforcing rib schematic diagram of the utility model embodiment.

[0028] Figure 5 The utility model discloses a screen body sound absorption and sound insulation composite board material arrangement scheme schematic diagram in height. DETAILED DESCRIPTION

[0029] The embodiments of the utility model will be described in detail below. It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the utility model and its applications.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the connection can be for fixing, coupling, or communicating.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0032] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0033] Referring to Figures 1 to 3 The utility model embodiment provides a kind of for rail transit sound barrier's screen body structure, for sound absorption configuration or sound insulation configuration, comprising: panel 1, is sound absorption board panel 1a or sound insulation board panel 1b;Reinforcing rib 2, it is located below the panel 1, for enhancing the wind load capacity and structural stability of screen body;Functional layer 3, it is arranged below the reinforcing rib 2, for realizing sound absorption or sound insulation effect;Shell, including side shell 4 and bottom shell 5, for protecting the side and bottom of screen body.The organic combination of panel 1, reinforcing rib 2, functional layer 3 and shell, this screen body structure can realize excellent noise reduction performance, wind load capacity and lightweight design.

[0034] Referring to Figure 2 In preferred embodiments, for the screen body structure of sound absorption configuration, the sound absorption board panel 1a is metal perforated plate, perforated diameter 0.05-5mm, perforation rate is 0.1-40%.The functional layer 3 includes porous material layer 31, perforated film layer 32a, air layer 33, perforated plate 34 and baffle 35.Preferably, the perforated form on the perforated film layer 32a is circular or slit.Preferably, the baffle 35 is honeycomb or grid structure.Preferably, the diameter of the perforated plate 34 is 0.05-1mm, and the perforation rate is 0.1-10%, and there are at least two aperture diameters or hole spacings.

[0035] Referring to Figure 3In a preferred embodiment, the sound insulation panel 1b of the sound insulation configuration is a dense metal plate. The functional layer 3 comprises a porous material layer 31, a non-porous film layer 32b, an air layer 33, a perforated plate 34 and a baffle 35 arranged in layers. Preferably, the baffle 35 is a honeycomb or grid structure. Preferably, the perforated plate 34 has a diameter of 1-10 mm, a perforation rate of 10-40%, and at least two hole diameters or hole spacings.

[0036] In a preferred embodiment, the shell is a dense metal plate, and the shell is located on the side and bottom of the functional layer 3.

[0037] Referring to Figures 4A to 4C In a preferred embodiment, the reinforcing rib 2 is a single X-shaped structure or an array of multiple X-shaped structures, and the reinforcing rib 2 passes through the midpoints 6 and the four corner points 7 of the plate.

[0038] In order to increase the wind load resistance of the sound barrier, the thickness of the plate is often increased, and even with the reinforcing rib 2 structure, horizontal ribs, vertical ribs or a combination of horizontal and vertical ribs are usually used, which increases the rigidity of the plate but also greatly increases the weight of the plate. The four edges of the sound barrier panel are constrained after installation, usually two opposite edges are constrained by the support, and the other two opposite edges are constrained by the panel-to-panel constraint of the panel, and the load is the wind load. The present application is based on the mechanical response (deformation and stress distribution) of the plate for reinforcement, the X-shaped reinforcing rib 2 is designed to reinforce the midpoints and stress concentration areas of the structure, avoiding excessive reinforcement, and reducing the weight of the structure while meeting the requirements of rigidity and strength.

[0039] In some preferred embodiments, the material of the panel 1, the shell (side shell 4 and bottom shell 5), and the perforated plate of the functional layer 3 is selected from aluminum alloy, galvanized steel plate; the porous material is polyurethane, and the material of the film is selected from PET, aluminum and aluminum alloy; the material of the reinforcing rib 2 is selected from glass steel, aluminum alloy and steel.

[0040] As Figure 5 The utility model embodiment further provides a screen body structure combination for rail transit sound barrier, comprising two or more screen body structures, wherein the sound insulation configuration screen body structure 100 and the sound absorption configuration screen body structure 200 are stacked and combined, and different stacking arrangement schemes can be adopted for different noise sources.

[0041] The utility model specific embodiments are further described below.

[0042] A screen body structure for rail transit sound barrier, which is assembled with composite panels with sound absorption or sound insulation functions in the height direction. These panels are all composed of a panel, a reinforcing rib, a functional layer and a shell.Figure 1 Fig. 1 is a basic structure schematic diagram of a screen body composite board according to an embodiment of the present application. Figure 2 Fig. 2 is a structure schematic diagram of a screen body sound absorption composite board according to an embodiment of the present application. Figure 3 Fig. 3 is a structure schematic diagram of a screen body sound insulation composite board according to an embodiment of the present application. Figure 5 Fig. 4 is a schematic diagram of an X-shaped reinforcing rib according to an embodiment of the present application.

[0043] The main difference between the sound absorption board and the sound insulation board lies in the type of the panel and the perforation characteristics of the film layer in the functional layer: the panel of the sound absorption board is equipped with a metal perforated plate, and the film layer thereof is designed with perforations; while the panel of the sound insulation board adopts a dense metal plate without perforations, and the film layer thereof also has no perforations. The detailed composition of the sound absorption and sound insulation boards is as follows:

[0044] Details of the sound absorption board composition:

[0045] - Panel: composed of a metal perforated plate, with a perforation diameter ranging from 0.05-5mm and a perforation rate of 0.1-40%.

[0046] - Functional layer: composed of a porous material layer, a film layer (with perforations, the perforation shape can be circular or slit), an air layer, a perforated plate (diameter 0.05-1mm, perforation rate 0.1-10%, at least two different perforated plate parameters), and a partition (honeycomb or grid structure).

[0047] - Shell: composed of a dense metal plate without perforations.

[0048] - Reinforcing rib: designed in an X-shaped structure.

[0049] Details of the sound insulation board composition:

[0050] - Panel: composed of a dense metal plate without perforations.

[0051] - Functional layer: contains a porous material layer, a non-perforated film layer, an air layer, a perforated plate (diameter 1-10mm, perforation rate 10-40%, at least two different hole diameters), and a partition (honeycomb or grid structure).

[0052] - Shell: same as the sound absorption board, a dense metal plate without perforations.

[0053] - Reinforcing rib: same as the sound absorption board, designed in an X-shaped structure.

[0054] For the sound absorption and sound insulation boards, the selection of each layer of material is as follows:

[0055] - Panel, outer shell, perforated plate: preferred materials include aluminum alloy and galvanized steel plate.

[0056] - Layer of porous material: polyurethane is used.

[0057] - Layer of film: optional materials include PET, aluminum or aluminum alloy.

[0058] - Reinforcing ribs: optional materials include glass fiber reinforced plastic, aluminum alloy or steel.

[0059] The design of the screen body structure allows flexible adjustment of the number and arrangement of each layer in the functional layer according to the specific requirements of noise reduction performance, to achieve the best noise reduction effect. In addition, the design of the reinforcing ribs is an X-shaped array structure, which is reinforced through the midpoint and four corner points of the plate. This design effectively reduces the overall weight while ensuring the rigidity and strength of the structure.

[0060] The screen body structure adopts a composite plate design with sound absorption or sound insulation, achieving excellent noise reduction performance. The combination of sound insulation and sound absorption plate materials improves the overall performance of the sound barrier. Through the combination of screen body plate materials with different performance, as well as different arrangement schemes of sound insulation and sound absorption plate materials in height, targeted noise reduction of different train noise spectra can be achieved. In addition, the basic configuration of the reinforcing rib design is an X-shaped array structure. The reinforcing ribs reinforce the midpoint and stress concentration areas of the structure through the midpoint and four corner points of the plate, avoiding excessive reinforcement, and can reduce the weight of the structure while meeting the requirements of rigidity and strength.

[0061] The above is further detailed description of the utility model in combination with specific / preferred embodiments, and cannot be deemed as limitation of the specific implementation of the utility model to these descriptions. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, some substitutions or variations can be made to the described embodiments, and these substitutions or variations shall be deemed as falling within the protection scope of the utility model. In the description of the specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the case of not mutually contradictory, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples. Although the embodiments of the utility model and its advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made in this paper without departing from the protection scope of the utility model application.

Claims

1. A screen structure for a rail transit sound barrier, for an absorption configuration or a reflection configuration, characterized in that, The application relates to a screen structure, comprising: a panel, which is an acoustic absorption panel or an acoustic insulation panel; a reinforcing rib, which is arranged below the panel and is used for reinforcing the wind load resistance and structural stability of the screen structure; a functional layer, which is arranged below the reinforcing rib and is used for realizing the acoustic absorption or acoustic insulation effect; an outer shell, which comprises a side outer shell and a bottom outer shell and is used for protecting the side and bottom of the screen structure.

2. The panel structure for a rail transit sound barrier according to claim 1, wherein The acoustic absorption panel is a metal perforated plate, the perforation diameter is 0.05-5mm, and the perforation rate is 0.1-40%.

3. The panel structure for a rail transit sound barrier according to claim 2, wherein The functional layer comprises a porous material layer, a film layer, an air layer, a perforated plate and a baffle, wherein the perforation on the film layer is in the form of a circle or a slit, the diameter of the perforated plate is 0.05-1mm, the perforation rate is 0.1-10%, and there are at least two kinds of hole diameters or hole spacings.

4. The panel structure for a rail transit sound barrier according to claim 1, wherein The acoustic insulation panel is a dense metal plate.

5. The panel structure for a rail transit sound barrier according to claim 4, wherein The functional layer comprises a porous material layer, a film layer, an air layer, a perforated plate and a baffle which are arranged in a laminated mode, wherein the film layer is not perforated, the diameter of the perforated plate is 1-10mm, the perforation rate is 10-40%, and there are at least two kinds of hole diameters or hole spacings.

6. The panel structure for a rail transit sound barrier according to claim 3 or 5, wherein The baffle is a honeycomb or grid structure.

7. The panel structure for a rail transit sound barrier according to any one of claims 1 to 5, wherein The outer shell is a dense metal plate and is arranged on the side and bottom of the functional layer.

8. The panel structure for a rail transit sound barrier according to claim 1, wherein The reinforcing rib is an array structure of single X-shaped structures or multiple X-shaped structures, and the reinforcing rib passes through the middle point and four corner points of the panel.

9. The panel structure for a rail transit sound barrier according to claim 3, wherein The panel, the outer shell and the perforated plate of the functional layer are made of aluminum alloy or galvanized steel plate; the porous material is polyurethane, the film is PET, aluminum or aluminum alloy; and the reinforcing rib is made of glass fiber reinforced plastic, aluminum alloy or steel.

10. A panel structure assembly for a rail transit sound barrier, characterized in that, The application further relates to a screen structure, comprising two or more screen structures as claimed in any one of claims 1 to 9, wherein the screen structures in the acoustic absorption configuration and the screen structures in the acoustic insulation configuration are combined in a laminated mode in the height direction.

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