A full-enclosed sound barrier of steel-concrete composite structure

Abstract

The utility model provides a kind of steel-concrete composite structure full-enclosed sound barrier, including sound barrier main part and sound barrier foundation, the both ends of sound barrier main part and the both ends of sound barrier foundation are connected bridge, to form passageway, sound barrier main part includes steel structure, concrete layer and sound absorption and insulation layer, steel structure includes several axial stiffeners, several hoop stiffeners and steel plate layer, hoop stiffener is C type, steel plate layer includes several steel plates, steel plate connects axial stiffener and hoop stiffener, the side wall of steel plate layer away from passageway is provided with concrete layer, the side of steel plate layer towards passageway is provided with sound absorption and insulation layer, sound absorption and insulation layer includes several sound absorption and insulation material boards, sound absorption and insulation material board connects axial stiffener, hoop stiffener and steel plate. By using the above structure, steel-concrete composite structure full-enclosed sound barrier has structural strength, structural stability and excellent sound absorption and insulation performance at the same time, and the noise reduction effect is strong.

Description

Technical Field

[0001] This utility model relates to the field of railway bridge technology, and in particular to a fully enclosed sound barrier with a steel-concrete composite structure. Background Technology

[0002] With the rapid development of railway transportation, the construction scale of high-speed railways and urban rail transit continues to expand, and the operating speed and frequency of railway trains are constantly increasing. As a result, noise problems are becoming increasingly prominent, and noise control has become an important part of railway bridge engineering design.

[0003] To mitigate the negative impact of noise on the surrounding environment, the most widely adopted noise reduction measure is the installation of sound barriers. Currently, sound barriers on the market are mainly divided into two categories: open sound barriers and closed sound barriers. Open sound barriers typically use a single material, such as concrete slabs, metal plates, or acrylic panels, for support. They are installed on both sides of railway bridges to block noise transmission. However, due to their open structure, noise can easily diffract from the top, resulting in limited noise reduction effectiveness. Closed sound barriers, on the other hand, create a closed space above the bridge, effectively preventing noise diffraction and achieving significant noise reduction. They are usually installed retrofitted, connected to the bridge piers or crash barriers via brackets, bolts, and other connectors.

[0004] However, existing enclosed sound barriers are prone to problems such as loose connections and structural deformation under external forces such as strong wind loads and vehicle vibrations, affecting their safety. The main body of the sound barriers lacks reinforcement, resulting in insufficient structural stability and susceptibility to deformation over long-term use. Furthermore, many employ single-material or simple double-layer composite structures; for example, pure metal plate structures offer high strength but insufficient sound absorption and insulation, while pure concrete structures provide good sound insulation but are heavy and have poor sound absorption. Composite structures combining metal plates and sound-absorbing materials suffer from weak wind load resistance and low durability. Existing enclosed sound barriers struggle to simultaneously achieve structural strength, stability, and noise reduction performance. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fully enclosed sound barrier with a steel-concrete composite structure, which aims to solve the problem that it is difficult to balance the structural strength, structural stability and noise reduction performance of the existing enclosed sound barrier.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: A fully enclosed sound barrier with a steel-concrete composite structure includes a sound barrier body and a sound barrier foundation. Both ends of the sound barrier body and both ends of the sound barrier foundation are connected to bridges to enclose a passage. The sound barrier body includes a steel structure, a concrete layer, and a sound-absorbing and insulating layer. The steel structure includes several axial stiffening ribs, several circumferential stiffening ribs, and a steel plate layer. The axial stiffening ribs are parallel to the axis of the passage, and the several circumferential stiffening ribs are arranged along the axis of the passage in a C-shape. The steel plate layer includes several steel plates connecting the axial stiffening ribs and the circumferential stiffening ribs. The concrete layer is located on the side of the steel plate layer facing away from the passage, and the sound-absorbing and insulating layer is located on the side of the steel plate layer facing the passage. The sound-absorbing and insulating layer includes several sound-absorbing and insulating material plates connecting the axial stiffening ribs, the circumferential stiffening ribs, and the steel plates.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting the steel plate layer and respectively setting the concrete layer and the sound-absorbing and insulating layer on both sides of the steel plate layer, the metal material can provide better structural strength, and the concrete material has durability. The combination of the steel plate layer and the concrete layer is beneficial to significantly improve the structural strength and structural stability of the fully enclosed sound barrier; the sound-absorbing and insulating layer can effectively absorb and block the noise generated by train operation, and the concrete layer can further improve the sound insulation effect; the steel structure includes several axial stiffening ribs and several circumferential stiffening ribs, which further constitute the main steel structure of the sound barrier, improving the overall rigidity and stability of the sound barrier; the main body of the sound barrier and the foundation of the sound barrier are connected to the bridge to form an integrated force-bearing system, which jointly bears the load generated by the sound barrier and train operation. The steel-concrete composite structure fully enclosed sound barrier has structural strength, structural stability and excellent sound absorption and insulation performance, and strong noise reduction effect.

[0008] Furthermore, the sound-absorbing and sound-insulating material panel includes a sound-absorbing sub-panel and a sound-insulating sub-panel. The side of the steel plate layer facing the channel is connected to the sound-insulating sub-panel, and the side of the sound-insulating sub-panel facing away from the steel plate layer is connected to the sound-absorbing sub-panel.

[0009] Furthermore, the thickness of the concrete layer is 60mm~80mm, the thickness of the steel plate layer is 6mm~10mm, both the concrete layer and the steel plate layer are connected to the bridge, the thickness of the sound-absorbing sub-board is 50mm~80mm, and the thickness of the sound-insulating sub-board is 20mm~30mm.

[0010] Furthermore, a two-way steel mesh is provided inside the concrete layer.

[0011] Furthermore, several ventilation openings are provided on the top of the main body of the sound barrier.

[0012] Furthermore, the steel structure is provided with several reinforcing plates, which connect the axial stiffening ribs and the circumferential stiffening ribs.

[0013] Furthermore, the thickness of the reinforcing plate is 12mm~16mm.

[0014] Furthermore, the distance between adjacent circumferential stiffening ribs is 1m to 1.2m, and the distance between adjacent axial stiffening ribs is 1.5m to 2m. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the fully enclosed sound barrier with steel-concrete composite structure in an embodiment of this utility model; Figure 2 This is a partial structural schematic diagram of the fully enclosed sound barrier with steel-concrete composite structure in an embodiment of this utility model; Figure 3 This is a schematic diagram of the sound-absorbing and insulating material plate in the fully enclosed sound barrier with steel-concrete composite structure in this embodiment of the present invention; Figure 4 This is a schematic diagram of the connection method of the bidirectional steel reinforcement mesh in the fully enclosed sound barrier of the steel-concrete composite structure in this utility model embodiment; Figure 5 This is a schematic diagram of the ventilation opening in the fully enclosed sound barrier with steel-concrete composite structure in this embodiment of the present invention; Figure 6 This is a schematic diagram of the reinforcing plate in the fully enclosed sound barrier with steel-concrete composite structure in this embodiment of the present invention; Explanation of key component symbols:

[0016] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0018] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] Please see Figures 1 to 6 The steel-concrete composite structure fully enclosed sound barrier in this embodiment of the utility model includes a sound barrier body 100 and a sound barrier foundation 400. Both ends of the sound barrier body 100 and both ends of the sound barrier foundation 400 are connected to bridges to enclose and form a passage 600. Several ventilation openings 140 are opened on the top of the sound barrier body 100. Preferably, the sound barrier body 100 is a three-layer composite structure, with the sound barrier body 100, the sound barrier foundation 400, and the bridge top cast as one unit. Compared to traditional fully enclosed sound barriers that are installed after installation, the steel-concrete composite structure fully enclosed sound barrier eliminates the need for installing a large number of connectors, forming an integrated load-bearing system with the bridge to jointly bear the load generated by the sound barrier and train operation. The ventilation openings 140 are squares with a side length of 0.5m, and several ventilation openings 140 are arranged along the axial direction of the channel 600 at the top of the sound barrier body 100. The distance between adjacent ventilation openings 140 is 0.3m, which helps to alleviate the aerodynamic pressure inside the enclosed sound barrier and provides natural light. Understandably, the integrated cast-in-place sound barrier combined with the ventilation openings 140 helps to improve the load-bearing capacity and stability of the sound barrier.

[0021] The main body 100 of the sound barrier includes a steel structure, a concrete layer 200, and a sound-absorbing and insulating layer 300. The thickness of the concrete layer 200 is 60mm to 80mm, and a two-way steel mesh 210 is provided inside the concrete layer 200. Preferably, the two-way steel mesh 210 uses two-way HRB400 steel bars. The concrete layer 200 is made of basalt fiber concrete, with a basalt fiber volume content of 0.8% to 1.2% and a fiber length of 12mm to 18mm. The concrete layer 200 with added fibers has better crack resistance and durability. The concrete layer 200 has a certain sound insulation effect, and the addition of fibers can further enhance the sound insulation effect.

[0022] The steel structure includes several circumferential stiffeners 120, several axial stiffeners 130, and a steel plate layer 110. A concrete layer 200 is disposed on the side wall of the steel plate layer 110 facing away from the channel 600. The thickness of the steel plate layer 110 is 6mm~10mm. Both the concrete layer 200 and the steel plate layer 110 are connected to the bridge. The axial stiffeners 130 are parallel to the axis of the channel 600. The several circumferential stiffeners 120 are arranged along the axis of the channel 600. The structure is C-shaped, with the distance between adjacent circumferential stiffening ribs 120 being 1m to 1.2m and the distance between adjacent axial stiffening ribs 130 being 1.5m to 2m. The steel plate layer 110 includes several steel plates 111, which connect the axial stiffening ribs 130 and the circumferential stiffening ribs 120. Several reinforcing plates 150 are provided on the steel structure, which connect the axial stiffening ribs 130 and the circumferential stiffening ribs 120. The thickness of the reinforcing plates 150 is 12mm to 16mm.

[0023] Preferably, the steel plate 111 is made of Q235B grade steel plate, and the steel plate 111 is welded and fixed to the axial stiffening rib 130 and the circumferential stiffening rib 120. The reinforcing plate 150 is made of Q355B grade steel plate. The steel plate layer 110, as the main load-bearing component, is in direct contact with the concrete layer 200, which is beneficial to further improve the sound insulation performance. Both the concrete layer 200 and the steel plate layer 110 are connected to the bridge connection part 500. The steel plate layer 110 is partially located within the bridge connection part 500. During the construction of the railway bridge, it is constructed and poured simultaneously with the bridge structure. Specifically, the axial stiffening rib 130 is made of H-beam with a wall thickness of 8mm and a height of 100mm, and the circumferential stiffening rib is made of H-beam with a wall thickness of 10mm and a height of 160mm. The steel plate 111 can be welded to one end face of the axial stiffening rib 130 or to the side face of the axial stiffening rib 130. Please refer to [link to relevant documentation]. Figure 4When the steel plate 111 is welded to the side of the axial stiffening rib 130, one end of both the axial stiffening rib 130 and the circumferential stiffening rib 120 is connected to the concrete layer 200. The bidirectional steel mesh 210 is connected to the circumferential stiffening rib 120 and the axial stiffening rib 130, specifically by welding. The ends of the axial stiffening rib 130 and the circumferential stiffening rib 120 away from the concrete layer 200 are connected to the reinforcing plate 150. The intersection of the circumferential stiffening rib 120 and the axial stiffening rib 130 is provided with... The reinforcing plate 150, made of metal, provides better structural strength, while the concrete material offers durability. The combination of the steel plate layer 110 and the concrete layer 200 significantly improves the structural strength and stability of the fully enclosed sound barrier. The steel structure includes several axial stiffening ribs 130 and several circumferential stiffening ribs 120, and the reinforcing plate 150 is installed at the intersection of the circumferential stiffening ribs 120 and the axial stiffening ribs 130, further constituting the main steel structure of the sound barrier and enhancing the overall rigidity and stability of the sound barrier.

[0024] The sound-absorbing and insulating layer 300 is disposed on the side of the steel plate layer 110 facing the channel 600. The sound-absorbing and insulating layer 300 includes a plurality of sound-absorbing and insulating material plates. The sound-absorbing and insulating material plates are connected to the axial stiffening rib 130, the circumferential stiffening rib 120, and the steel plate 111. The sound-absorbing and insulating material plates include a sound-insulating sub-plate 310 and a sound-absorbing sub-plate 320. The side of the steel plate layer 110 facing the channel 600 is connected to the sound-insulating sub-plate 310, and the side of the sound-insulating sub-plate 310 facing away from the steel plate layer 110 is connected to the sound-absorbing sub-plate 320. Preferably, the sound-absorbing sub-plate 320 is made of centrifugal glass wool board with a density of 48 kg / m³. 3 ~64kg / m 3 The sound insulation sub-panel 310 is made of modified asphalt damping plate. The sound insulation sub-panel 310 and the sound absorption sub-panel 320 are fixed together by adhesive. The sound absorption and insulation material plate is connected to the axial stiffening rib 130 and the circumferential stiffening rib 120 by bolts. The sound absorption and insulation material plate is fixed to the steel plate 111 by pasting. The joints of the sound absorption sub-panel 320 are sealed with sealing tape to ensure the sound absorption effect. It can be understood that the sound absorption and insulation layer 300 forms a continuous composite structure, which can effectively absorb and block the noise generated by train operation, and has a better absorption effect on broadband noise, greatly improving the noise reduction effect of the sound barrier. The steel-concrete composite structure fully enclosed sound barrier has structural strength, structural stability and excellent sound absorption and insulation performance, and strong noise reduction effect.

[0025] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fully enclosed sound barrier with a steel-concrete composite structure, characterized in that, The system includes a sound barrier body and a sound barrier foundation. Both ends of the sound barrier body and the sound barrier foundation are connected to bridges to enclose a passage. The sound barrier body includes a steel structure, a concrete layer, and a sound-absorbing and insulating layer. The steel structure includes several axial stiffening ribs, several circumferential stiffening ribs, and a steel plate layer. The axial stiffening ribs are parallel to the axis of the passage, and the several circumferential stiffening ribs are arranged along the axis of the passage in a C-shape. The steel plate layer includes several steel plates connecting the axial stiffening ribs and the circumferential stiffening ribs. The concrete layer is located on the side of the steel plate layer facing away from the passage, and the sound-absorbing and insulating layer is located on the side of the steel plate layer facing the passage. The sound-absorbing and insulating layer includes several sound-absorbing and insulating material plates connecting the axial stiffening ribs, the circumferential stiffening ribs, and the steel plates.

2. The fully enclosed sound barrier with reinforced concrete composite structure according to claim 1, characterized in that, The sound-absorbing and sound-insulating material panel includes a sound-absorbing sub-panel and a sound-insulating sub-panel. The side of the steel plate layer facing the channel is connected to the sound-insulating sub-panel, and the side of the sound-insulating sub-panel facing away from the steel plate layer is connected to the sound-absorbing sub-panel.

3. The fully enclosed sound barrier with a steel-concrete composite structure according to claim 2, characterized in that, The thickness of the concrete layer is 60mm~80mm, the thickness of the steel plate layer is 6mm~10mm, both the concrete layer and the steel plate layer are connected to the bridge, the thickness of the sound-absorbing sub-board is 50mm~80mm, and the thickness of the sound-insulating sub-board is 20mm~30mm.

4. The fully enclosed sound barrier with a steel-concrete composite structure according to claim 1, characterized in that, The concrete layer is internally reinforced with a two-way steel mesh.

5. The fully enclosed sound barrier with reinforced concrete composite structure according to claim 1, characterized in that, Several ventilation openings are provided on the top of the main body of the sound barrier.

6. The fully enclosed sound barrier with reinforced concrete composite structure according to claim 1, characterized in that, The steel structure is provided with several reinforcing plates, which connect the axial stiffening ribs and the circumferential stiffening ribs.

7. The fully enclosed sound barrier with reinforced concrete composite structure according to claim 6, characterized in that, The thickness of the reinforcing plate is 12mm to 16mm.

8. The fully enclosed sound barrier with steel-concrete composite structure according to claim 1, characterized in that, The distance between adjacent circumferential stiffeners is 1m to 1.2m, and the distance between adjacent axial stiffeners is 1.5m to 2m.

Images