CN219710115U

CN219710115U - Sound barrier

Info

Publication number: CN219710115U
Application number: CN202320056123.1U
Authority: CN
Inventors: 冀春雷; 刘敏; 国泛函; 陈夏晴; 彭胜群
Original assignee: China Railway Fifth Survey and Design Institute Group Co Ltd
Current assignee: China Railway Fifth Survey and Design Institute Group Co Ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-09-19
Anticipated expiration: 2033-01-09

Abstract

The utility model relates to the technical field of railway traffic, in particular to a sound barrier, which comprises the following components: the sound insulation part is configured to be fixed on the top of the existing wall body, and the length direction of the sound insulation part extends along the length direction of the existing wall body; the sound insulation part comprises a main body part and a fixing part, wherein the main body part is connected with the fixing part, the main body part is positioned above the fixing part, and the fixing part is configured to be fixedly connected with the existing wall body. According to the sound barrier, the fixing of the sound insulation part is fixedly connected with the existing wall body, so that the main body part can be fixed on the existing wall body, and the sound barrier is additionally arranged on the existing wall body in a mode of not dismantling the existing wall body (such as a protective wall), so that the recommended time is saved, the resources are saved, and the construction cost is reduced.

Description

Sound barrier

Technical Field

The utility model relates to the technical field of railway traffic, in particular to a sound barrier.

Background

The railway construction investment is large, the industry chain length is long, the method has remarkable effects on increasing national production and output values and pulling economic growth, and can also drive the research and development of new materials and information industries and pull the demands of industries such as machinery, metallurgy, construction, rubber, synthetic materials, electric power, information, computers, precise instruments and the like. The rapid development of railways brings vitality and vitality to the passenger and freight transportation of railways and also makes the noise condition of the railway environment more and more serious. In order to reduce the influence of noise on production facilities, buildings and life of people, a sound barrier is often arranged on a highway or railway bypass passing through a bridge, a living area or an industrial area to realize sound insulation and noise reduction, the sound barrier is an effective means for railway noise control, the current research on the sound barrier is concentrated on the aspects of construction form, development and application of sound absorption and insulation materials, and is basically designed for newly built sound barriers, most of the existing protective walls of railways are dismantled, and the sound insulation is realized in a newly built sound barrier mode, so that the whole process needs to be subjected to the dismantling and newly built processes, time and resources are consumed, and the construction cost is correspondingly increased.

Disclosure of Invention

The embodiment of the utility model provides a sound barrier to solve the problems that the existing protective wall of a railway is mostly dismantled and the sound barrier is newly built to realize sound insulation, so that the whole process needs to be subjected to the dismantling and newly built processes, the time is consumed, the resources are wasted, and the construction cost is correspondingly increased.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the embodiment of the utility model provides a sound barrier, which comprises: a sound insulation part configured to be fixed to a top of an existing wall, and a length direction of the sound insulation part extends along a length direction of the existing wall; the sound insulation part comprises a main body part and a fixing part, wherein the main body part is connected with the fixing part, the main body part is positioned above the fixing part, and the fixing part is configured to be fixedly connected with the existing wall body.

Optionally, the sound barrier further comprises a sound absorbing layer configured to be fixed to a side of the existing wall adjacent to the line.

Optionally, the sound absorption layer is made of foamed concrete.

Optionally, the main part includes two shells that set up relatively, two the face of shells is relative to be set up, and two be the angle setting between the face of shells, the length direction of shells with the length direction of existing wall body parallels.

Optionally, the main body portion further comprises an internal sound absorbing structure disposed between two of the skin panels.

Optionally, the shell plate is provided with a plurality of through holes.

Optionally, the lower edge of each shell plate is fixed with the fixed part, and the fixed part is fixedly connected with the existing wall body through a fastener.

Optionally, the number of the sound insulation parts is multiple, and the sound insulation parts are sequentially arranged along the length direction of the existing wall body in an extending mode.

Optionally, the sound barrier further comprises a heightening wall body, the heightening wall body is arranged at the top of the existing wall body, and the sound insulation part is arranged at the top of the heightening wall body.

Optionally, the thickness of the sound absorbing layer is not less than 1cm.

Compared with the prior art, the sound barrier provided by the embodiment of the utility model has the following technical effects:

according to the sound barrier, the fixing of the sound insulation part is fixedly connected with the existing wall body, so that the main body part can be fixed on the existing wall body, and the sound barrier is additionally arranged on the existing wall body in a mode of not dismantling the existing wall body (such as a protective wall), so that the recommended time is saved, the resources are saved, and the construction cost is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of a sound barrier applied to an existing wall according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a sound barrier applied to an existing wall according to another view angle of the present utility model;

FIG. 3 is a schematic structural diagram of a sound barrier according to an embodiment of the present utility model applied to another view angle of an existing wall;

fig. 4 is a schematic structural diagram of an acoustic isolation portion of an acoustic barrier according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of an acoustic isolation portion of an acoustic barrier according to an embodiment of the present utility model.

The figures are marked as follows:

101. a main body portion; 102. a fixing part; 103. a sound absorbing layer; 104. the existing wall body; 105. a housing plate; 106. a through hole; 107. a bolt; 108. heightening a wall body; 109. connecting the cross bars; 110. and (5) supporting the rod.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present utility model more apparent, the following detailed description of exemplary embodiments of the present utility model is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

The rapid development of railways brings vitality and vitality to the passenger and freight transportation of railways and also makes the noise condition of the railway environment more and more serious; research shows that when the train speed is lower than 250km/h, the main source of railway noise is wheel track noise, and the energy is concentrated at the frequency of 800-2500Hz; wheel track noise is generated by the propagation of vibrations of the track structure and wheel sets through the air; the sound barrier is an effective means of railway noise control, and the reasonable arrangement of the sound absorbing materials can increase the noise reduction effect of the sound barrier by about 3-6dB. The noise attenuation and the sound barrier height are not in a simple linear relation, and the proper height of the sound barrier in the high-speed railway roadbed section is 4-5 m under the condition of simultaneously considering the noise reduction requirement and the sound barrier cost; the height of the existing wall body of the railway is generally 2-2.5m, and the design height of the sound barrier is not 3-4m and the noise reduction index requirement is not met. At present, the research on the sound barrier is basically designed for newly constructing the sound barrier, and the existing protective wall of the railway is mostly dismantled and the sound insulation is realized by newly constructing the sound barrier, so that the whole process needs to be subjected to the dismantling and newly constructing processes, thereby not only consuming time and wasting resources, but also correspondingly increasing the construction cost.

Referring to fig. 1 and 2, in one or more embodiments, the present utility model provides a sound barrier that utilizes an existing wall 104 to achieve a sound screen to solve the above-described problems. The sound barrier in the embodiment of the utility model comprises: a sound insulation part configured to be fixed to a top of the existing wall 104, and a length direction of the sound insulation part extending along a length direction of the existing wall 104; the sound insulation part comprises a main body part 101 and a fixing part 102, wherein the main body part 101 is connected with the fixing part 102, the main body part 101 is positioned above the fixing part 102, and the fixing part 102 is configured to be fixedly connected with the existing wall 104.

According to the sound barrier provided by at least one embodiment of the utility model, the main body part 101 can be fixed on the existing wall 104 by fixedly connecting the fixing of the sound insulation part with the existing wall, so that the sound barrier is additionally arranged on the existing wall 104 in a mode of not dismantling the existing wall 104 (for example, a protective wall), which is beneficial to saving the recommended time, saving the resources and reducing the construction cost.

Referring to fig. 3, in some embodiments, the sound barrier further includes a sound absorbing layer 103, the sound absorbing layer 103 being configured to be secured to a side of the existing wall 104 proximate the line. Sound insulation is facilitated by providing a sound absorbing layer 103 on the side of the existing wall 104 that is adjacent to the railway or road.

In some embodiments, the sound absorbing layer 103 is made of foamed concrete, which facilitates construction. It should be noted that, the sound absorbing layer 103 may also be made of other materials, such as a foam board; or a honeycomb panel or the like. Note that, the material of the sound absorbing layer 103 may be fly ash mortar.

Referring to fig. 1, 3, 4 and 5, in some embodiments, the main body 101 includes two opposite shell plates 105, the plate surfaces of the two shell plates 105 are opposite, and the plate surfaces of the two shell plates 105 are disposed at an angle, and the length direction of the shell plates 105 is parallel to the length direction of the existing wall 104. The provision of two angled skin panels 105 is advantageous for improved noise reduction. In one embodiment, the outer shell plates 105 are all plate structures, and the included angles formed by the plate surfaces of the two outer shell plates 105 may be: 60 ° -90 °, for example: by arranging the two skin plates 105 at an angle of 70 or 80, the sound insulator is formed into a Y-shaped structure, which gives a relatively good noise reduction effect.

It should be noted that, in some other possible embodiments, the main body 101 further includes an internal sound absorbing structure disposed between the two outer shell plates 105, and the internal sound absorbing structure may be a foam layer filled between the two outer shell plates 105 or may be a foam plate fixed on the plate surface of the outer shell plates 105. In other possible embodiments, as shown in fig. 5, a support bar 110 may be connected between the two skin plates 105, which may increase the strength of the connection between the two skin plates 105. In addition, reinforcing ribs can be respectively arranged on the plate surface of the shell plate 105 along the length direction and the height direction of the shell plate 105, so that the stability of the structure of the shell plate 105 is improved, the bending condition is avoided, and the distance between two adjacent reinforcing ribs in the height direction can be 50cm.

Referring to fig. 1, in some embodiments, the outer shell 105 is provided with a plurality of through holes 106, so that the noise reduction effect of the sound barrier is more and more remarkable with the increase of the aperture ratio of the outer shell 105 under the condition that the sound barrier is of a certain height, and meanwhile, when the internal sound absorption structure is provided, the noise reduction effect of the sound barrier is more and more remarkable with the increase of the thickness of the internal sound absorption structure and the decrease of the density of the internal sound absorption structure. In some embodiments, the plurality of through holes 106 may be formed in the casing plate 105 in a row and column manner, and the shape of the through holes 106 may be circular, elliptical or polygonal. The lower edge of the outer shell 105 also has a through hole 106, so that the through hole 106 at the lower edge has drainage, and rainwater is reduced from collecting on the sound barrier.

Referring to fig. 3, in some embodiments, a fixing portion 102 is fixed to a lower edge of each of the shell plates 105, and the fixing portion 102 is fixedly connected to the existing wall 104 by a fastener. The installation of the sound barrier is facilitated to be quickly achieved through the fasteners. In one embodiment, the fastening piece is a bolt 107, the bolt 107 passes through the fixing part 102 connected with the lower edges of the two opposite shell plates 105 and the existing wall 104, and then the bolt 107 is matched with the nut to realize fastening, so that the sound barrier is fixed; the fixing portion 102 may have a plate-like structure, which is advantageous in improving the connection strength between the fixing portion 102 and the main body portion 101 and improving the stability of the sound barrier. Both the outer skin 105 and the fixing portion 102 may take the form of a metal plate or a color plate.

In some embodiments, the number of sound insulation portions is multiple, and the sound insulation portions are sequentially arranged along the length direction of the existing wall 104, so that the sound barrier is convenient to install on the existing wall 104. In one embodiment, two adjacent sound insulation parts can be overlapped or arranged at opposite intervals; when the overlapping is arranged, the width of the overlapping part is not less than 10cm, for example, 10 cm-30 cm, and the width of the overlapping part is exemplified by 15cm, 20cm or 25cm, and when the overlapping is spliced, a mode of matching the grooves with the protrusions can be adopted, so that the overlapping between two adjacent shell plates 105 along the length direction of the existing wall 104 can be better realized; when spaced apart, the spacing between adjacent two sound-insulating portions is no greater than 5cm, illustratively 1cm, 2cm, 3cm or 4cm.

Referring to fig. 1, in some embodiments, the sound barrier further includes a raised wall 108, where the raised wall 108 is disposed on top of the existing wall 104, and the sound insulation portion is located on top of the raised wall 108, and the noise reduction effect is achieved by increasing the height through the raised wall 108. In one embodiment, a side of the raised wall 108 adjacent the line is also provided with a sound absorbing layer 103, which facilitates sound insulation.

In some embodiments, the thickness of the sound absorbing layer 103 is not less than 1cm, for example, the thickness of the sound absorbing layer 103 is 1cm to 3cm, and illustratively, the thickness of the sound absorbing layer 103 is 1.5cm or 2cm, which is advantageous for improving the noise reduction effect.

Referring to fig. 4 and 5, in some embodiments, a connecting rail 109 is provided between the lower edges of the opposing outer shells 105, such that the connecting rail 109 sits atop an existing wall 104 or raised wall 108 for support. When the heightened wall 108 is arranged, the fixing part 102 can be fixedly connected with the heightened wall 108 through a fastener, so that the indirect fixed connection between the fixing part 102 and the existing wall 104 is realized; or a part of the fixing portion 102, which is attached to the heightened wall 108, is fixedly connected with the heightened wall 108 through a fastener, and another part of the fixing portion 102, which is attached to the existing wall 104, is fixedly connected with the existing wall 104 through a fastener.

The construction method of the sound barrier in at least one embodiment of the utility model comprises the following steps:

step S101, finishing the top of the existing wall 104, specifically, removing anti-crossing objects, such as wire netting, glass and the like, on the top of the existing wall 104 on two sides of the railway, so as to ensure the top surface of the existing wall 104 to be flat;

step S102, arranging a heightened wall body 108 on the top of the existing wall body 104, and constructing the heightened wall body 108 on site by adopting the same material as the existing wall body 104, such as by grouting bricks, wherein the construction height is 50cm-100cm, the width of the constructed heightened wall body 108 is the same as the width of the existing wall body 104, and the top of the heightened wall body 108 is plastered by cement mortar; the height h1 of the existing wall 104 is 2m, the height h2 of the heightened wall 108 is 50cm, and the height h3 of the main body 101 of the sound insulation portion is 1m, for example, the sum of the height of the sound insulation portion, the height of the heightened wall 108, and the height of the existing wall 104 is 3.5 m.

Step S103, installing an acoustic isolation part of a sound barrier, wherein during installation, two shell plates 105 which are oppositely arranged are respectively positioned at two sides of a heightened wall 108, and penetrate through the heightened wall 108 and an existing wall 104 through bolts 107 to be fixed; the fixing part 102 and the shell plate 105 can be prefabricated and formed in a welding or rolling mode, and the length of the sound insulation part is 2m-3m; the height of the fixing portion 102 is determined according to wind load, snow load and other factors of the region where the fixing portion is located.

In step S104, a sound absorbing material, such as foamed concrete, is applied to the raised wall 108 and the inner side (side near the railway line) of the existing wall 104, the thickness of the applied paint is not less than 1cm, the height of the applied paint is from the foundation of the existing wall 104 to the lower edge of the raised wall 108 to the shell plate 105, and the sound absorbing layer 103 is in the form of a rough surface.

In summary, the sound barrier provided by the embodiment of the utility model is applicable to railway noise control, and the existing wall 104 of the railway is transformed into a sound screen structure meeting the design requirements through the steps of arranging the top of the existing wall 104, arranging the heightened wall 108, installing the sound insulation part, constructing the sound absorption layer 103 and the like, so that the sound barrier has good practicability, saves the old and new construction cost and construction period, solves the problem of reutilization of the existing wall 104, and has good economic benefit and certain innovation. In addition, the construction process does not involve the use of large machinery, the construction is convenient and quick, the requirements on construction sites are not high, the existing wall 104 is not dismantled, only the top wire netting is dismantled and is trimmed into a plane, the heightened wall 108 is built to a certain height according to the design height of the sound barrier, the construction period and the cost are saved, the materials for construction are common and easy to obtain, the cost is low, and the economical efficiency is good.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A sound barrier, comprising: a sound insulation part configured to be fixed to a top of an existing wall, and a length direction of the sound insulation part extends along a length direction of the existing wall;

the sound insulation part comprises a main body part and a fixing part, the main body part is connected with the fixing part, the main body part is positioned above the fixing part, and the fixing part is configured to be fixedly connected with the existing wall body;

the sound absorption layer is configured to be fixed on one side surface of the existing wall body, which is close to the line;

the main body part comprises two shell plates which are oppositely arranged, the plate surfaces of the two shell plates are arranged at an angle, and the length direction of the shell plates is parallel to the length direction of the existing wall body;

the body portion further includes an internal sound absorbing structure disposed between the two skin panels.

2. The sound barrier of claim 1, wherein the sound absorbing layer is foamed concrete.

3. The sound barrier of claim 1, wherein the skin plate is formed with a plurality of through holes.

4. The sound barrier of claim 1, wherein the lower edge of each skin panel is secured with the securing portion, the securing portion being fixedly attached to the existing wall by fasteners.

5. The sound barrier of any one of claims 1-2, wherein a plurality of sound insulation parts are provided, and a plurality of sound insulation parts are sequentially arranged along the length direction of the existing wall body.

6. The sound barrier of any one of claims 1-2, further comprising a raised wall disposed on top of the existing wall, the sound insulation being located on top of the raised wall.

7. The sound barrier of claim 2, wherein the sound absorbing layer has a thickness of not less than 1cm.