Concrete sound barrier

Abstract

The utility model provides a concrete sound barrier which comprises a concrete face plate and a concrete back plate, the concrete face plate is used for absorbing sound, and the concrete back plate is used for supporting the concrete face plate. The concrete face plate is located on the concrete back plate, a ribbed beam embedded into the concrete face plate is arranged on one side of the concrete back plate, and the ribbed beam is obliquely arranged and used for improving the bonding strength between the concrete face plate and the concrete back plate; the concrete panel is made of a large-void-ratio concrete sound absorption material with the aggregate particle size of 2mm-9.5 mm and the porosity of 8%-40%; according to the utility model, the adopted large-void-ratio concrete material is of a porous structure, so that sound absorption is more facilitated; the inclined rib beams can ensure that the concrete face plate and the concrete back plate are firmly bonded; through the sound barrier formed by overlapping the concrete face plate and the concrete back plate, the noise reduction effect is more remarkable.

Description

Technical Field

[0001] The utility model relates to the field of highway ancillary projects, in particular to a concrete sound barrier. Background Art

[0002] Sound barriers are mainly used for sound insulation and noise reduction of railways, highways, expressways, elevated composite roads and other noise sources. Precast concrete sound barriers are widely used in engineering. Compared with traditional metal sound barriers, precast concrete sound barriers have the advantages of reliable structure, good noise reduction performance, durability, and beautiful appearance. However, there are still some shortcomings in concrete sound barriers: due to the low strength of the panel material, the traditional concrete sound barrier mainly relies on the back plate to bear the force. The back plate is usually set with equal thickness, which causes waste of concrete materials, increases material costs, and causes unnecessary waste. Taking the perlite ceramsite composite sound-absorbing board proposed in the prior art as an example, the sound barrier uses a perlite sound-absorbing material as the panel and ceramsite concrete as the back plate. In this scheme, the panel and the back plate are roughened to increase the bonding force, and the production requires extrusion molding. Although this scheme effectively enhances the bonding strength between the panel and the back plate, it requires extrusion molding, the process is cumbersome, and the back plate is set with equal thickness, which invisibly increases the amount of back plate concrete, resulting in material waste. For this reason, it is necessary to develop a composite concrete sound barrier with a simpler manufacturing process, more reasonable structural force, more reliable bonding effect, and more material saving. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a concrete sound barrier, comprising a concrete panel and a concrete backboard, wherein the concrete panel is stacked on the concrete backboard, and the concrete panel and the concrete backboard are cast and formed, and the concrete panel is a porous structure, which is more conducive to sound absorption, and one side of the concrete backboard is provided with a rib beam embedded in the concrete panel, and the rib beam is inclined to improve the bonding strength between the concrete panel and the concrete backboard; and while ensuring the overall strength, the concrete sound barrier has a simplified structure, which effectively improves the production and installation efficiency.

[0004] The utility model achieves the above technical purpose through the following technical means.

[0005] A concrete sound barrier comprises a concrete panel and a concrete back plate, wherein the concrete panel is used for sound absorption, and the concrete back plate is used for supporting the concrete panel; the concrete panel is located on the concrete back plate, and one side of the concrete back plate is provided with a rib beam embedded in the concrete panel to improve the bonding strength between the concrete panel and the concrete back plate.

[0006] Furthermore, the material of the concrete panel is a sound-absorbing material; the sound-absorbing material is a concrete material with a porosity of 10% to 40%, and the aggregate particle size in the sound-absorbing material is 2 to 9.5 mm; the material of the concrete backboard is a fiber concrete material.

[0007] Furthermore, the sound-absorbing surface of the concrete panel is provided with a concave-convex structure for diffuse reflection of sound waves.

[0008] Furthermore, the cross section of the concavo-convex structure is wavy or sawtooth.

[0009] Furthermore, the cross section of the rib beam is rectangular, trapezoidal or arc-shaped.

[0010] Furthermore, steel bars are provided in the rib beams to strengthen the strength of the rib beams.

[0011] Furthermore, the contact surfaces between the rib beam and the concrete face plate and the concrete back plate form an acute angle.

[0012] Furthermore, at least one hanging point is provided on the concrete back plate.

[0013] Furthermore, a groove is provided at one end of the concrete back plate, and a tenon is provided at the other end for cooperation and connection with adjacent concrete back plates.

[0014] Furthermore, the cross-sections of the groove and the tenon are trapezoidal or arc-shaped, and the height of the tenon is 5 mm to 10 mm less than the depth of the groove.

[0015] The beneficial effects of the utility model are:

[0016] 1. The concrete sound barrier described in the utility model is easy to demould after pouring, and the panel and the mold are not easily damaged by arranging a continuous concave-convex structure on the surface of the concrete panel.

[0017] 2. The concrete sound barrier described in the utility model can achieve connection between adjacent sound barrier panels by arranging mortise and tenon structures at the upper and lower ends of the concrete back plate, and at the same time play a fixing role during installation and use.

[0018] 3. The concrete sound barrier described in the utility model can improve the bonding strength between the panel and the backboard by arranging rib beams at the connection between the concrete panel and the concrete backboard, and can also realize the rapid replacement of the panel.

[0019] 4. The concrete sound barrier described in the utility model is formed by overlapping a concrete panel and a concrete back panel, and the effect of reducing noise is more significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. The drawings described below are some embodiments of the utility model. For ordinary technicians in this field, it is obvious that other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the concrete sound barrier described in Example 1 of the utility model;

[0022] Figure 2 This is a side view of the concrete sound barrier described in Example 1 of the utility model;

[0023] Figure 3 This is a top view of the concrete sound barrier described in Example 1 of the utility model;

[0024] Figure 4 This is a side view of the concrete sound barrier described in Example 2 of the utility model;

[0025] Figure 5 This is the front view of the concrete sound barrier described in Example 3 of the utility model;

[0026] Figure 6 This is a top view of the concrete sound barrier described in Example 3 of the utility model;

[0027] In the figure:

[0028] 1-concrete panel; 2-lifting point; 3-concrete back plate; 4-groove; 5-rib beam; 6-rebar; 7-tenon; 8-demolding lifting point. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The concrete sound barrier described in the utility model comprises a sound absorbing panel and a sound insulating backboard, wherein the sound absorbing panel is a concrete panel 1, such as Figure 1 As shown, a concrete back plate 3 is provided on the back of the concrete panel 1. The concrete back plate 3 is made of C50-C80 fiber concrete material. In the present utility model, C80 high-strength fiber concrete material is used as the back plate. C80 high-strength fiber concrete has high compressive and tensile strengths, and does not require steel bars inside. Under the condition of meeting the construction conditions, materials can be saved; the material of the concrete panel 1 is a sound-absorbing material. In the present utility model, the sound-absorbing material is permeable concrete. The permeable concrete is one of the large-pore ratio concrete materials. The aggregate particle size of the large-pore ratio concrete is 2mm-9.5mm, and the porosity is 10%-40%; the concrete panel 1 is 5cm-20cm narrower than the concrete back plate 3; Figure 3 As shown, a hoisting point 2 is provided on the side of the concrete back plate 3 facing away from the concrete panel 1, and the concrete back plate 3 is also provided with a demoulding point 8. The hoisting point 2 can be a sleeve, and the demoulding point 8 can be a hook.

[0033] The sound-absorbing layer of the concrete sound barrier described in the utility model adopts a large-pore-ratio concrete material and has a porous structure, which is more conducive to sound absorption. In addition, the concrete material has higher strength than other inorganic materials, and there is no need to take other measures to strengthen the strength of the surface structure. During the casting and forming process of the concrete panel 1 and the concrete backboard 3, the slurry of the concrete panel 1 and the slurry of the concrete backboard 3 can penetrate each other to form a connecting surface. The bonding strength of this connection method can reach or even exceed the tensile strength of the panel layer concrete, which can ensure that the concrete panel 1 and the concrete backboard 3 are firmly bonded, and there is no need to set connecting parts, so the construction is simpler and the connection strength is more reliable. In addition, the concrete panel 1 using a large-pore-ratio concrete material as the sound-absorbing panel and the concrete backboard 3 using a fiber concrete material as the sound insulation panel are overlapped, which has a more significant noise reduction effect. One side of the concrete backboard 3 is provided with an embedded concrete The rib beam 5 inside the soil panel 1 forms an acute angle with the contact surface between the rib beam 5 and the concrete panel 1 and the concrete backboard 3. The rib beam 5 can also be arranged horizontally, that is, the contact surface between the rib beam 5 and the concrete panel 1 and the concrete backboard 3 forms a right angle; on the one hand, the rib beam 5 can be used to improve the bonding strength between the concrete backboard 3 and the concrete panel 1; on the other hand, since the service life of the concrete panel 1 as the sound absorbing layer is shorter than the concrete backboard 3, the sound absorbing layer can be quickly replaced by arranging the rib beam 5. The cross-section of the rib beam 5 can be rectangular, trapezoidal, arc-shaped or other shapes; a continuous concave-convex structure is provided on the surface of the concrete panel 1, and the concave-convex structure can facilitate demoulding after pouring is completed to avoid damage to the panel and the mold during demoulding; the cross-section of the concave-convex structure is wavy or serrated, and the panel with the concave-convex structure shape refracts the sound waves to achieve a better sound absorption and noise reduction effect.

[0034] Embodiment 1:

[0035] like Figure 2 and Figure 3The concrete sound barrier shown in the figure has a concrete panel 1 on the concrete back plate 3, the concrete panel 1 is consistent in height with the concrete back plate 3, the left and right ends of the concrete panel 1 are 2.5cm to 10cm away from the left and right ends of the concrete back plate 3 respectively, and a rib beam 5 embedded in the concrete panel 1 is provided at the connection between the concrete back plate 3 and the concrete panel 1. The rib beam 5 is horizontally arranged, and the rib beam 5 can not only improve the bonding strength between the concrete back plate 3 and the concrete panel 1, but also facilitate the disassembly of the overall device. In this embodiment, the cross-section of the rib beam 5 is rectangular, and the height of the rib beam 5 is 1cm to 3cm; one end of the concrete back plate 3 is provided with The groove 4 has a tenon 7 at the other end, and adjacent sound barriers are connected by the groove 4 and the tenon 7. The shapes of the groove 4 and the tenon 7 can be trapezoidal or arc-shaped. The height of the tenon 7 is 5mm to 8mm less than the depth of the groove 4. In the present embodiment, the groove 4 and the tenon 7 are trapezoidal, and a continuous concave-convex structure is provided on the surface of the concrete panel 1. The concave-convex structure can facilitate demoulding after pouring is completed to avoid damage to the panel and the mold during demoulding. The concave-convex structure can also refract sound waves to achieve better sound absorption effect. In the present embodiment, the concave-convex structure is a trapezoidal structure arranged at intervals and the lower bottom surface is on the same plane, and the cross-section of the concave-convex structure is serrated.

[0036] Embodiment 2:

[0037] like Figure 4The concrete sound barrier shown in the figure has a concrete back plate 3 with a through-length groove body, and a large porosity concrete is filled in the groove body to form a concrete panel 1. The upper and lower ends of the concrete panel 1 are respectively 2.5 cm to 10 cm away from the upper and lower ends of the concrete back plate 3. A rib beam 5 embedded in the concrete panel 1 is provided at the connection between the concrete back plate 3 and the concrete panel 1. The contact surface between the rib beam 5 and the concrete panel 1 and the concrete back plate 3 forms an acute angle. The rib beam 5 can not only improve the bonding strength between the concrete back plate 3 and the concrete panel 1, but also facilitate the disassembly of the overall device. In this embodiment, the cross-section of the rib beam 5 is arc-shaped, and the height of the rib beam 5 is 1 cm to 3 cm; a steel bar 6 is provided in the rib beam 5 to improve the strength of the rib beam 5. The concrete back plate 3 is provided with a groove 4 at one end and a tenon 7 at the other end. Adjacent sound barriers are connected by the groove 4 and the tenon 7. The shapes of the groove 4 and the tenon 7 can be trapezoidal or arc-shaped. The height of the tenon 7 is 5mm to 8mm less than the depth of the groove 4. A continuous concave-convex structure is provided on the surface of the concrete panel 1. The concave-convex structure can facilitate demoulding after casting, avoid damage to the panel and mold during demoulding, and can also refract sound waves to achieve better sound absorption effect. In this embodiment, the concave-convex structure is a plurality of wavy arc-shaped protrusions arranged at intervals, and the wavelengths and peak arc radii of the plurality of wavy arc-shaped protrusions are consistent. The sound barrier can be formed by connecting a plurality of sound barriers through concave-convex tenons, or the whole plate can be prefabricated.

[0038] Embodiment three:

[0039] like Figure 5 , Figure 6 The concrete sound barrier shown in the figure has a concrete back plate 3 that is 2.48m long, 0.15m wide and 2m high. A trough that is 2.18m long, 0.08m wide and 1.775m high is provided on the concrete back plate 3. A large pore ratio concrete is filled in the trough to form a concrete panel 1. A continuous concave-convex structure is provided on the surface of the concrete panel 1. The concave-convex structure can facilitate demoulding after pouring to avoid damage to the panel and the mold during demoulding. The concave-convex structure can also refract sound waves to achieve a better sound absorption effect. A rib beam 5 embedded in the concrete panel 1 is provided at the connection between the concrete back plate 3 and the concrete panel 1. The contact surface between the rib beam 5 and the concrete panel 1 and the concrete back plate 3 is at an acute angle. A steel bar 6 is provided in the rib beam 5 to increase the strength of the rib beam 5. A groove 4 is provided at one end of the concrete back plate 3 and a tenon 7 is provided at the other end. Adjacent concrete back plates 3 are connected by the groove 4 and the tenon 7 to form a sound barrier as shown in the figure. Figure 5 The overall sound barrier shown is 2.48m long, 0.15m wide and 4m high.

[0040] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0041] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the protection scope of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete sound barrier, characterized in that: The invention comprises a concrete panel (1) and a concrete back plate (3), wherein the concrete panel (1) is used for sound absorption, and the concrete back plate (3) is used for supporting the concrete panel (1); the concrete panel (1) is located on the concrete back plate (3), and one side of the concrete back plate (3) is provided with a rib beam (5) embedded in the concrete panel (1) to improve the bonding strength between the concrete panel (1) and the concrete back plate (3).

2. The concrete sound barrier according to claim 1, characterized in that: The material of the concrete panel (1) is a sound-absorbing material; the sound-absorbing material is a concrete material with a porosity of 10% to 40%, and the aggregate particle size in the sound-absorbing material is 2 to 9.5 mm; the material of the concrete backboard (3) is a fiber concrete material.

3. The concrete sound barrier according to claim 1, characterized in that: The sound-absorbing surface of the concrete panel (1) is provided with a concave-convex structure for diffuse reflection of sound waves.

4. The concrete sound barrier according to claim 3, characterized in that: The cross section of the concavo-convex structure is wavy or sawtooth.

5. The concrete sound barrier according to claim 1, characterized in that: The cross section of the rib beam (5) is rectangular, trapezoidal or arc-shaped.

6. The concrete sound barrier according to claim 1, characterized in that: Steel bars are arranged inside the rib beam (5) to strengthen the strength of the rib beam (5).

7. The concrete sound barrier according to claim 1, characterized in that: The contact surfaces between the rib beam (5) and the concrete panel (1) and the concrete back panel (3) are at an acute angle.

8. The concrete sound barrier according to claim 1, characterized in that: At least one hanging point is provided on the concrete back plate (3).

9. The concrete sound barrier according to claim 1, characterized in that: The concrete back plate (3) is provided with a groove (4) at one end and a tenon (7) at the other end for matching and connecting with adjacent concrete back plates (3).

10. The concrete sound barrier according to claim 9, characterized in that: The cross-sections of the groove (4) and the tenon (7) are trapezoidal or arc-shaped, and the height of the tenon (7) is 5 mm to 10 mm less than the depth of the groove (4).

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