Light high-strength concrete sound barrier self-standing system

Abstract

The utility model discloses a light high-strength concrete sound barrier self-standing system which is formed by fixedly connecting a plurality of sound barrier units into a row, and each sound barrier unit comprises a light high-strength concrete sound insulation wall and a sound absorption material. The light high-strength concrete sound insulation wall is of an integrated structure and comprises a vertical sound insulation panel and rib columns with cavities. The sound absorption material is adhered to the sound source surface of the sound insulation panel, and the rib column is positioned on the other side surface of the sound insulation panel and is opposite to the sound source surface; the lower ends of the rib columns extend out of the sound insulation panel; the bottom of the sound insulation panel is fixed to a building or a foundation. The sound barrier is reliable in installation, and stability of a sound barrier system is improved.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction technology, specifically to a lightweight, high-strength concrete sound barrier self-supporting system. Background Technology

[0002] With the development of the social economy and the advancement of urbanization, people have higher and higher requirements for environmental protection, such as solving urban traffic congestion and noise control. As a result, a large number of sound barriers have been set up on both sides of the roads and rail transit lines in the city.

[0003] In recent years, the preparation technology of lightweight high-strength concrete (lightweight high-strength concrete refers to structural lightweight concrete with a dry apparent density of no more than 1950 kg / m3 and a strength grade of LC30 or above, prepared using high-strength lightweight coarse aggregates such as high-strength ceramsite, ordinary sand, cement, and water) has been continuously improved and applied to the field of sound barriers. The resulting lightweight high-strength cement sound-absorbing and insulating panels possess excellent sound absorption and insulation performance, mechanical properties, weather resistance, and durability. They are lightweight, easy to construct, and place little burden on the foundation. Their structural types can be varied, and their appearance easily blends with the surrounding environment, making them a highly efficient sound-absorbing and noise-reducing product. When used in conjunction with sound-absorbing materials, they achieve even better sound absorption and insulation effects. Currently, they have been applied to some extent in highways, railways, and viaducts. The conventional approach uses H-shaped steel columns as the central connecting frame, fixing the H-shaped steel columns with bolts pre-embedded in the ground. A 500mm wide lightweight high-strength cement sound-absorbing and insulating panel is inserted between the flanges of the H-shaped steel column, and sealed with rubber strips and connected to the steel column using angle steel and bolts. During on-site construction, it is often difficult to accurately embed ground bolts, which not only affects the fixation of H-shaped steel columns, but also limits the installation accuracy of sound-absorbing and insulating panels. During use, rubber strips are prone to falling off and bolts may loosen. Moreover, in open-air environments, steel components are prone to corrosion, affecting aesthetics and safety. Utility Model Content

[0004] In view of this, the present invention provides a lightweight, high-strength concrete sound barrier self-supporting system, which is reliable to install and improves the stability of the sound barrier system.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A lightweight, high-strength concrete sound barrier self-supporting system consists of several sound barrier units fixedly connected in a row. The sound barrier unit includes a lightweight, high-strength concrete sound insulation wall and sound-absorbing material.

[0007] The lightweight, high-strength concrete soundproof wall is an integrated structure, comprising an upright soundproof panel and ribs with cavities; the sound-absorbing material is bonded to the sound source surface of the soundproof panel, and the ribs are located on the other side of the soundproof panel, opposite to the sound source surface; the lower end of the ribs extends out of the soundproof panel, and the extended part is fixed into the foundation; the bottom of the soundproof panel is fixed to the building or foundation.

[0008] Furthermore, one end of the sound insulation panel has a groove on the sound source surface, and the other end of the sound insulation panel has a protrusion; the protrusions and grooves between adjacent sound insulation panels are overlapped and fixedly connected.

[0009] Furthermore, the soundproof panel has an internal cavity.

[0010] Furthermore, the sound insulation panel is provided with reinforcing bars or wire mesh.

[0011] Furthermore, the upper end of the soundproof panel is provided with embedded parts for hoisting.

[0012] Furthermore, the ribs are evenly distributed with a spacing of 1000mm-4000mm, the rib wall thickness is 20-50mm, and the minimum side length of the rib is ≥100mm.

[0013] Furthermore, the base is provided with a mounting groove, the volume of which is greater than the volume of the protruding portion of the rib.

[0014] Furthermore, the cavity of the rib column is provided with a steel reinforcement skeleton pre-embedded in the installation groove, and the end of the steel reinforcement skeleton extends into the bottom of the installation groove.

[0015] Furthermore, the cavity of the rib column is provided with a pre-embedded steel frame in the installation groove. The end of the steel frame is flush with the bottom of the groove. The end of the steel frame is provided with stiffening ribs. The bottom of the steel frame is fixed to the bottom of the installation groove by welding steel plates.

[0016] Beneficial effects:

[0017] 1. This utility model is lightweight, simple in structure, easy to install, and highly precise. Each sound barrier unit is an integral unit, with the ribs embedded to a certain depth in the building or foundation, ensuring reliable connection and improving the stability of the self-supporting sound barrier system. The rib cavity can be filled with self-compacting concrete for connection and fixation, further enhancing its stability. The elimination of steel columns and bolt connections avoids problems such as column rusting and bolt loosening, truly leveraging the weather resistance and durability of the non-metallic sound barrier. This reduces maintenance costs and extends service life.

[0018] Furthermore, due to the uniformity and integrity of the facade of the self-supporting sound barrier system, the sound barrier unit can be designed according to the local landscape on the sound source surface, which can improve the landscape of the area along the route.

[0019] 2. The sound insulation panels of this utility model are spliced ​​in a staggered manner through protrusions and grooves, making the structure more stable.

[0020] 3. In order to achieve the requirements of lightweighting and better sound insulation, the sound insulation panel of this utility model can adopt a cavity structure.

[0021] 4. The sound insulation panel of this utility model is equipped with steel bars or wire mesh, which can improve its strength and rigidity against wind pressure and airflow.

[0022] 5. The rib cavity of this utility model is provided with a steel reinforcement skeleton or steel frame pre-embedded in the installation groove, which further improves the reliability of the installation connection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the sound barrier unit structure of this utility model.

[0024] Figure 2 This is a horizontal cross-sectional view of a lightweight, high-strength concrete soundproof wall.

[0025] Figure 3 This is a schematic diagram of the installation structure for Example 1.

[0026] Figure 4 This is a schematic diagram of the steel reinforcement cage fixing in Example 1.

[0027] Figure 5 This is a schematic diagram of the installation structure for Example 2.

[0028] Figure 6 This is a schematic diagram of the fixing of the steel frame in Example 2.

[0029] Among them, 1-sound insulation panel, 2-cavity, 3-rib column, 4-rough surface, 5-steel frame, 6-steel frame, 7-foundation, 8-bolt, 9-installation groove, 10-steel plate, 11-stiffening rib. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] This invention provides a lightweight, high-strength concrete sound barrier self-supporting system, consisting of several sound barrier units fixedly connected in a row. Each sound barrier unit includes a lightweight, high-strength concrete sound insulation wall and sound-absorbing material.

[0032] like Figure 1 As shown, the lightweight high-strength concrete soundproof wall is an integrated structure, including an upright soundproof panel 1 and a rib 3 with a cavity 2; the sound-absorbing material is bonded to the sound source surface of the soundproof panel 1, and the rib 3 is located on the other side of the soundproof panel 1, opposite to the sound source surface; the lower end of the rib 3 extends out of the soundproof panel 1, and the extended part extends into the foundation 7 for fixation.

[0033] Specifically, the lightweight, high-strength concrete soundproof wall is made of UHPC ultra-high performance concrete that meets strength requirements, and is prefabricated in one piece. The thickness of the soundproof panel 1 ranges from 10-100mm, and the surface density is 30-100kg / m³. 2 Within this range, a thickness that is too small will not meet the strength and stiffness requirements for withstanding wind loads, while a thickness that is too large will increase construction costs. A thickness of 40-80 kg / m² is preferred. 2 To achieve lightweight design and better sound insulation, the sound insulation panel 1 can adopt a hollow structure. The lightweight, high-strength concrete sound insulation panel 1 can be reinforced with steel bars or wire mesh during casting, depending on the requirements. The upper end of the sound insulation panel 1 is equipped with embedded parts for hoisting.

[0034] like Figure 2 As shown, one end of the sound insulation panel 1 has a groove on the sound source surface, and the other end of the sound insulation panel 1 has a protrusion; the protrusions and grooves between adjacent sound insulation panels 1 are overlapped and fixed together. The gaps at the overlap are filled tightly with silicone sealant or sealing strips.

[0035] Ribs 3 are evenly distributed with a spacing of 1000mm-4000mm, and the wall thickness of rib 3 is 20-50mm; the minimum side length of rib 3 is ≥100mm.

[0036] The foundation 7 is provided with a mounting groove 9, the volume of which is greater than the volume of the protruding part of the rib 3 extending downward from the sound insulation panel 1. The mounting groove 9 can be made by cast-in-place or prefabrication.

[0037] like Figure 3 , Figure 4 As shown in Embodiment 1, the rib column 3 has dimensions of 200mm × 200mm, a wall thickness of 30mm, a spacing of 2000mm, and an insertion length of 500mm. A steel reinforcement frame 5 is embedded in the mounting groove 9 within the cavity 2 of the rib column 3, with the end of the steel reinforcement frame 5 extending below the bottom of the mounting groove 9. The steel reinforcement frame 5 is used when the sound barrier height is low and the wind load and train wind pressure load are small. The bottom of the upright sound insulation panel 1 is fixed to the building or foundation 1.

[0038] like Figure 5 , Figure 6As shown in Embodiment 2, the rib column 3 has dimensions of 200mm × 200mm, a wall thickness of 30mm, a spacing of 2000mm, and an insertion length of 500mm. A steel frame 6 is embedded in the mounting groove 9 within the cavity 2 of the rib column 3. The end of the steel frame 6 is flush with the bottom of the groove, and stiffening ribs 11 are provided at the end of the steel frame 6. A welded steel plate 10 is fixed to the bottom of the steel frame 6, and the welded steel plate 10 is fixed to the bottom of the mounting groove 9 by bolts 8. When the sound barrier is high and the wind load and train wind pressure load are large, the steel frame 6 can be an H-shaped steel frame. The bottom of the upright sound insulation panel 1 is fixed to the building or foundation 7.

[0039] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A lightweight, high-strength concrete sound barrier self-supporting system, characterized in that, The sound barrier consists of several sound barrier units fixedly connected in a row, wherein the sound barrier unit includes a lightweight high-strength concrete sound insulation wall and sound-absorbing material; The lightweight, high-strength concrete soundproof wall is an integrated structure, comprising an upright soundproof panel and ribs with cavities; the sound-absorbing material is bonded to the sound source surface of the soundproof panel, and the ribs are located on the other side of the soundproof panel, opposite to the sound source surface; the lower end of the ribs extends out of the soundproof panel, and the extended part is fixed into the foundation; the bottom of the soundproof panel is fixed to the building or foundation.

2. The lightweight, high-strength concrete sound barrier self-supporting system as described in claim 1, characterized in that, The sound insulation panel has a groove on one end of the sound source surface and a protrusion on the other end; the protrusions and grooves of adjacent sound insulation panels are overlapped and fixedly connected.

3. The lightweight, high-strength concrete sound barrier self-supporting system as described in claim 1, characterized in that, The soundproof panel has a cavity inside.

4. The lightweight, high-strength concrete sound barrier self-supporting system as described in claim 3, characterized in that, The sound insulation panel is equipped with steel bars or wire mesh.

5. The lightweight, high-strength concrete sound barrier self-supporting system as described in any one of claims 1-4, characterized in that, The soundproof panel is equipped with embedded parts for hoisting at its upper end.

6. The lightweight, high-strength concrete sound barrier self-supporting system as described in claim 1, characterized in that, The ribs are evenly spaced, with a spacing of 1000mm-4000mm, a rib wall thickness of 20-50mm, and a minimum side length of ≥100mm.

7. The lightweight, high-strength concrete sound barrier self-supporting system as described in claim 1 or 6, characterized in that, The base is provided with a mounting groove, the volume of which is greater than the volume of the protruding part of the rib.

8. The lightweight, high-strength concrete sound barrier self-supporting system as described in claim 7, characterized in that, The cavity of the rib column is provided with a steel reinforcement skeleton pre-embedded in the installation groove, and the end of the steel reinforcement skeleton extends into the bottom of the installation groove.

9. The lightweight, high-strength concrete sound barrier self-supporting system as described in claim 7, characterized in that, The cavity of the rib column is provided with a pre-embedded steel frame in the installation groove. The end of the steel frame is flush with the bottom of the groove. The end of the steel frame is provided with stiffening ribs. The bottom of the steel frame is fixed to the bottom of the installation groove by welding steel plates.

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