Unit type sound barrier sound absorption and insulation wall

Abstract

The utility model relates to the technical field of sound barriers, and discloses a unit type sound barrier sound absorption and insulation wall body which is formed by connecting a plurality of unit structures in the extending direction of a road, and each unit structure is composed of a sound absorption plate and a sound insulation framework. The sound insulation framework is of a U-shaped structure, the opening end of the sound insulation framework faces a sound source, the sound absorption plate seals the opening end of the sound insulation framework to form a columnar structure with a cavity, and the cavity is an air layer. The sound absorption and insulation structure is easy to install, good in sound absorption and insulation effect and high in durability.

Description

Technical Field

[0001] This utility model relates to the field of sound barrier technology, and in particular to a unit-type sound barrier sound absorption and insulation wall. Background Technology

[0002] With socio-economic development and increasing urbanization, urban roads, rail transit, railways, and other public infrastructure are becoming increasingly sophisticated. Consequently, noise pollution is attracting growing public attention. Sound barriers are a commonly used and effective noise reduction measure.

[0003] Sound barriers are mainly divided into metal sound barriers and non-metal sound barriers based on their materials. Currently, the sound-absorbing materials used inside metal sound barriers are traditional rock wool and polyester fibers. These materials have disadvantages such as poor durability, low strength, and the potential to generate harmful dust; furthermore, metal sound barriers are prone to corrosion. Non-metal sound barriers are mostly made of cement concrete. Cement concrete sound barriers are heavy, difficult to hoist, have long production cycles, and high construction costs. Moreover, cement concrete sound barriers generally only consist of sound insulation materials and do not contain sound-absorbing materials, resulting in poor sound absorption.

[0004] In addition, the current sound barrier system consists of a screen and columns. The screen is inserted between the flanges of the columns and fixed with bolts and spring clips, which is complicated to install. Moreover, the columns are made of H-shaped steel, which is prone to rust and corrosion, resulting in high maintenance costs. Utility Model Content

[0005] In view of this, the present invention provides a unit-type sound barrier sound-absorbing and sound-insulating wall, which is simple to install and has good sound absorption and sound insulation effect and high durability.

[0006] This utility model is achieved through the following technical solution: a unit-type sound barrier sound-absorbing and sound-insulating wall, which is composed of several unit structures connected along the road extension direction. The unit structure is composed of sound-absorbing panels and sound-insulating frames. The sound-insulating frames are U-shaped structures with the open end of the sound-insulating frames facing the sound source. The sound-absorbing panels close the open end of the sound-insulating frames to form a columnar structure with a cavity, and the cavity is an air layer.

[0007] Furthermore, the sound insulation frame material is UHPC high-performance concrete, with a flexural strength of 2KPa or above and an impact strength of 30J or above; the thickness of the sound insulation frame is 5-100mm.

[0008] Furthermore, the sound-absorbing panel is composed of cementitious material and particles. The cementitious material is bonded with two different particle sizes to form two particle layers. The two particle layers are bonded together by the cementitious material to form the sound-absorbing panel. The thickness of the sound-absorbing panel is 5-20 mm.

[0009] Furthermore, the air layer thickness is 30–200 mm.

[0010] Furthermore, the sound-absorbing panel is a single panel, or it is composed of several sound-absorbing panels spliced ​​together along its height direction; the surface of the sound-absorbing panel facing the sound source is flat, or the flat surface has wavy protrusions or pagoda-shaped protrusions.

[0011] Furthermore, the sound insulation frame has grooves on two opposite sides, the width of which is the same as the thickness of the sound-absorbing board, and the depth of which is not less than 2mm; the two ends of the sound-absorbing board are respectively fitted into the grooves and embedded into the two sides of the sound insulation frame; the grooves are located at least 10mm away from the ends of the sides.

[0012] Furthermore, the sound insulation frame has two opposite ends that protrude perpendicularly to the sides, and the protruding parts are called protrusions.

[0013] Furthermore, the two protrusions have grooves on their opposite end faces, with the central axis of the grooves coinciding with the central axis of the protrusions. The thickness of the protrusions is more than 20mm greater than the width of the grooves, and the thickness of the protrusions is consistent with the wall thickness of the sound insulation frame.

[0014] Compared with existing technologies, the beneficial effects of this utility model are:

[0015] 1. The sound-absorbing and sound-insulating wall is composed of several unit structures connected together. The sound-absorbing panels facing the sound source absorb noise, the sound insulation frame isolates noise, and the air layer further improves the sound absorption and insulation effect. In addition, the sound insulation frame and the sound-absorbing panels form a columnar structure, which is easy to install and reduces the number of components that are prone to rust and corrosion, thus enhancing the durability of the sound barrier.

[0016] 2. The sound insulation frame is made of UHPC high-performance concrete, which is lightweight, has a shorter production cycle than cement concrete, and has high bending and impact resistance.

[0017] 3. Sound-absorbing panels made of cementitious materials and granules have better sound absorption effects than traditional rock wool and polyester fiber, while producing less dust and being more environmentally friendly.

[0018] 4. The sound-absorbing panel has wave-shaped or pagoda-shaped protrusions on the surface facing the sound source, which can further enhance the noise absorption effect.

[0019] 5. The sound-absorbing panel is inserted into the groove of the cavity frame without the need for connectors. The installation is simple and the unit structure formed by the sound-absorbing panel and the sound insulation frame has high airtightness, ensuring sound absorption and insulation effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the assembly of this utility model.

[0021] Figure 2 This is a schematic diagram of the unit structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the sound insulation frame of this utility model.

[0023] Figure 4 This is a schematic diagram of the sound-absorbing panel of the present utility model.

[0024] Among them, 1 is the unit structure, 2 is the sound insulation skeleton, and 3 is the sound-absorbing panel. Specific embodiments

[0025] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] The present utility model provides a unit type sound barrier sound absorption and insulation wall body, as Figure 1 , 2 shown. This wall body is formed by connecting a plurality of unit structures 1 in the shape of columns along the extension direction of roads and railways. The unit structure 1 is composed of a sound-absorbing panel 3 and a sound insulation skeleton 2; the sound insulation skeleton 2 is of a concave shape, and the shape is The open end of the sound insulation skeleton 2 faces the sound source, and the sound-absorbing panel 3 closes the open end of the sound insulation skeleton 2 to form a columnar structure with a cavity. The cavity forms an air layer, and the thickness of the air layer can be 30 - 200 mm. The thickness of the air layer refers to the length along the direction perpendicular to the sound-absorbing panel 3. That is, the side of the unit structure 1 facing the sound source is the sound-absorbing panel 3, and the sound insulation skeleton 2 and the sound-absorbing panel 3 enclose a columnar structure that is closed on all four sides. The cross-section of the columnar structure is a "hui" character shape with a cavity.

[0027] The material of the sound insulation skeleton 2 adopts UHPC high-performance concrete. After forming, the flexural strength of the sound insulation skeleton 2 reaches 2 KPa or more, and the impact strength reaches 30 J or more; the wall thickness of the sound insulation skeleton 2 is 5 - 100 mm. The wall thickness of the sound insulation skeleton 2 refers to the thickness of three sides, and the thickness of all three sides is 5 - 100 mm. As Figure 3 shown, the two opposite side ends of the sound insulation skeleton 2 can relatively protrude perpendicularly to the sides. The protruding part is the protruding portion, and the sound insulation skeleton 2 forms shape.

[0028] The sound-absorbing panel 3 is composed of a gelling material and particles. The gelling material respectively forms two particle layers with two different particle sizes, and the two particle layers are bonded together by the gelling material to form the sound-absorbing panel 3. The particles can be grit, and the gelling material can be epoxy resin; the thickness of the sound-absorbing panel 3 is 5 - 20 mm.

[0029] As Figure 4 shown, the side of the unit structure 1 facing the sound source can be composed of a whole sound-absorbing panel 3, or be composed of several sound-absorbing panels 3 spliced along the height direction of the unit structure 1; the plate surface of the sound-absorbing panel 3 facing the sound source can be a plane, or have a wavy protrusion or a pagoda-shaped protrusion on the plane.

[0030] The sound-absorbing panel 3 can be fixedly connected to the sound insulation frame 2 via connectors, or the sound-absorbing panel 3 can be inserted into the sound insulation frame 2. In this embodiment, the sound insulation frame 2 has grooves on two opposite sides. The width of the grooves is the same as the thickness of the sound-absorbing panel 3, and the groove depth is not less than 2mm. The groove depth refers to the length of the sound-absorbing panel 3 embedded in the sound insulation frame 2. The two ends of the sound-absorbing panel 3 are respectively embedded into the two sides of the sound insulation frame 2 with the grooves. For the sound insulation frame 2 that does not protrude inward on the two opposite sides, i.e. The sound insulation frame 2 has a groove at least 10mm from the end of its side. For the sound insulation frame 2 with two opposing convex sides, i.e. The sound insulation frame 2 has a groove set on the opposite end face of two protrusions. The central axis of the groove coincides with the central axis of the protrusion. The thickness of the protrusion is more than 20mm greater than the width of the groove. The thickness of the protrusion is the same as the wall thickness of the sound insulation frame 2.

[0031] Several unit structures 1 are connected along the extension direction of the road and railway to form a sound-absorbing and sound-insulating wall. The gaps between unit structures 1 can be filled with rubber strips.

[0032] The unit-type sound barrier provided by this utility model consists of a sound insulation frame 2 and a sound-absorbing panel 3 forming a unit structure 1. It is easy to install, greatly reduces the number of components that are prone to rust and corrosion, and the sound insulation frame 2 and the sound-absorbing panel 3 are made of lightweight concrete material, which has better sound absorption and insulation effect, better weather resistance, less maintenance, and simple manufacturing process.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A unit-type sound barrier sound-absorbing and sound-insulating wall, characterized in that, The wall is composed of several unit structures connected along the road extension direction. Each unit structure consists of sound-absorbing panels and a sound-insulating frame. The sound insulation frame has a U-shaped structure with the open end facing the sound source. The sound-absorbing panel closes the open end of the sound insulation frame to form a columnar structure with a cavity, which is an air layer.

2. The unit-type sound barrier sound-absorbing and sound-insulating wall as described in claim 1, characterized in that, The sound insulation frame material is UHPC high-performance concrete, with a bending strength of 2KPa and above, and an impact strength of 30J and above; the thickness of the sound insulation frame is 5-100mm.

3. The unitary sound barrier sound-absorbing and sound-insulating wall as described in claim 1, characterized in that, The sound-absorbing panel is composed of cementitious material and particles. The cementitious material is bonded with two different particle sizes to form two particle layers. The two particle layers are bonded together by the cementitious material to form the sound-absorbing panel. The thickness of the sound-absorbing panel is 5-20mm.

4. The unitized sound barrier sound-absorbing and sound-insulating wall as described in claim 1, characterized in that, The air layer thickness is 30–200 mm.

5. The unitary sound barrier sound-absorbing and sound-insulating wall as described in claim 1, characterized in that, A sound-absorbing panel is a single panel, or it can be composed of several sound-absorbing panels spliced ​​together along its height. The surface of the sound-absorbing panel facing the sound source is flat, or the flat surface has wavy or pagoda-shaped protrusions.

6. The unit-type sound barrier sound-absorbing and sound-insulating wall as described in any one of claims 1-5, characterized in that, The sound insulation frame has grooves on two opposite sides. The width of the grooves is the same as the thickness of the sound-absorbing board, and the depth of the grooves is not less than 2mm. The two ends of the sound-absorbing board are respectively fitted into the grooves and embedded into the two sides of the sound insulation frame. The grooves are located at least 10mm away from the ends of the sides.

7. The unit-type sound barrier sound-absorbing and sound-insulating wall as described in any one of claims 1-5, characterized in that, The sound insulation frame has two opposite ends that protrude perpendicularly to the sides, and the protruding parts are called protrusions.

8. The unitized sound barrier sound-absorbing and sound-insulating wall as described in claim 7, characterized in that, The two protrusions have grooves on their opposite end faces, with the central axis of the grooves coinciding with the central axis of the protrusions. The thickness of the protrusions is more than 20mm greater than the width of the grooves, and the thickness of the protrusions is consistent with the wall thickness of the sound insulation frame.

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