Railway sound barrier mounting structure

Abstract

The utility model provides a railway sound barrier installation structure which comprises preassembled bottom beams, installation stand columns, a first sound insulation screen and a second sound insulation screen, an expansion joint is arranged between every two adjacent preassembled bottom beams, the number of the installation stand columns is multiple, and the first sound insulation screen and the second sound insulation screen are both connected between every two adjacent installation stand columns. The two adjacent installation stand columns of the same preassembled bottom beam are provided with inserting bases respectively, the two installation stand columns located on the two sides of the expansion joint are provided with telescopic movable bases respectively, telescopic grooves are formed in the telescopic movable bases, and elastic assemblies are arranged in the telescopic grooves. According to the railway sound barrier installation structure, the first sound insulation screen is connected between the two adjacent installation stand columns above the same preassembled bottom beam, the second sound insulation screen is connected between the two installation stand columns of different preassembled bottom beams, and the second sound insulation screen is elastically connected between the two installation stand columns through the elastic assembly. And meanwhile, the sound insulation effect of the sound barrier is also ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of railway sound barrier installation structure, and more specifically, it relates to a railway sound barrier installation structure. Background Technology

[0002] As a major mode of transportation, railway infrastructure is becoming increasingly sophisticated. Currently, when high-speed railways are located close to residential areas, fully enclosed sound barriers are often installed to reduce noise pollution and impact on daily life. However, the sound barrier panels are typically installed as a single unit on-site, which presents several problems.

[0003] First, sound barriers need to be cut on-site according to dimensions. The raw materials are generally large, resulting in low efficiency and high cost for manual installation. The transportation and installation are also inconvenient. More importantly, the sound insulation panels cannot adapt to the expansion and contraction requirements of temperature changes, which can easily cause shrinkage or tension damage and affect the service life of the sound barriers. Utility Model Content

[0004] The purpose of this utility model is to provide a railway sound barrier installation structure that facilitates the installation of the sound barrier, improves installation accuracy and efficiency, and extends the service life of the sound barrier.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a railway sound barrier installation structure is provided, including a pre-installed bottom beam, mounting columns, a first sound barrier and a second sound barrier. Several pre-installed bottom beams are provided and arranged sequentially in the horizontal direction. An expansion joint is provided between two adjacent pre-installed bottom beams. Several mounting columns are provided and connected to the top of the pre-installed bottom beams in the vertical direction. The first sound barrier and the second sound barrier are both connected between two adjacent mounting columns.

[0006] Among them, two adjacent mounting columns of the same pre-installed bottom beam are respectively provided with plug-in seats that correspond to the two sides of the first sound barrier and are plugged in one by one. Two mounting columns located on both sides of the expansion joint are respectively provided with telescopic movable seats. The telescopic movable seats are provided with telescopic grooves that extend in the vertical direction and are plugged in with the side edges of the second sound barrier. The telescopic grooves are provided with elastic components, which are set between the telescopic movable seats and the second sound barrier to cooperate with the expansion and contraction of the expansion joint.

[0007] In one possible implementation, a flange seat is connected to the top surface of the pre-installed bottom beam. The bottom wall of the flange seat protrudes outward from the peripheral wall of the flange seat and is welded to the top surface of the pre-installed bottom beam. The mounting column is sleeved on the outer periphery of the flange seat and connected to the flange seat through a connector.

[0008] In one possible implementation, the side of the plug-in socket is provided with a plug groove extending in the vertical direction, and the side of the first sound barrier is provided with a plug strip that engages with the plug groove. Both the plug groove and the plug strip have dovetail-shaped cross sections, and the width of the opening side of the plug groove gradually decreases.

[0009] In one possible implementation, the opening width of the expansion groove is smaller than the inner cavity width of the expansion groove, and the side of the second sound barrier is provided with a mating strip that can be inserted into the expansion groove. The elastic component is located on the side of the mating strip away from the bottom wall of the expansion groove, and is used to push the second sound barrier towards the side closer to the mounting column.

[0010] In some embodiments, the elastic component includes a helical elastic element and a flexible sleeve layer, the main axis of the helical elastic element extending in a horizontal direction, and the flexible sleeve layer having a through cavity that is horizontally through to accommodate the helical elastic element, the peripheral wall of the helical elastic element abutting against the peripheral wall of the through cavity.

[0011] In some embodiments, several second sound barriers are arranged sequentially along the direction of the mounting column, and several elastic components are arranged sequentially along the direction of the mounting column, corresponding one-to-one with the second sound barriers.

[0012] In one possible implementation, both the first and second sound barriers include a covering shell and a lightweight sound-absorbing panel. The lightweight sound-absorbing panel has sound-absorbing holes on the side wall near the sound-facing surface. The cross-section of the sound-absorbing holes is hexagonal, and the size of the opening side of the sound-absorbing holes gradually increases.

[0013] In some embodiments, the upper end face of the first sound barrier and the second sound barrier is provided with a raised upper strip, and the lower end face of the first sound barrier and the second sound barrier is provided with a recessed lower groove. The lower groove can be inserted and engaged with the upper strip of the first sound barrier and the second sound barrier located below. The cross-section of the upper strip and the lower groove are both isosceles trapezoids.

[0014] In some embodiments, a horizontally extending connecting strip is formed below the first soundproof screen and the second soundproof screen. The connecting strip has two sections, which are respectively located near the two side walls of the first soundproof screen or the two side walls of the second soundproof screen. The first soundproof screen or the second soundproof screen located below is located between the two connecting strips.

[0015] In one possible implementation, the mounting column is made of aluminum alloy, the pre-installed bottom beam is made of steel, and an elastic pad is provided between two adjacent pre-installed bottom beams.

[0016] Compared with the prior art, the railway sound barrier installation structure provided in this application embodiment uses embedded parts pre-embedded underground to fix the pre-installed base beam to the ground. The installation columns are connected above the pre-installed base beam. The first sound barrier is connected between two adjacent installation columns above the same pre-installed base beam, and the second sound barrier is connected between two installation columns of different pre-installed base beams. While using expansion joints to meet the expansion and contraction performance of the two adjacent pre-installed base beams, elastic components are set to make the second sound barrier elastically connected between the two installation columns to meet the expansion and contraction requirements of the expansion joints and avoid the second sound barrier from being stretched and damaged. The above structure is easy to install and simple to operate, solves the problem of structural expansion and contraction, ensures the sound insulation effect of the sound barrier, and has good performance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the railway sound barrier installation structure provided in this embodiment of the utility model;

[0019] Figure 2 This is an embodiment of the present utility model. Figure 1 Structural schematic diagram of the pre-assembled bottom beam and flange seat;

[0020] Figure 3 This is an embodiment of the present utility model. Figure 1 A structural diagram showing the installation of the uprights, connectors, and telescopic seats.

[0021] Figure 4 This is an embodiment of the present utility model. Figure 1 A schematic diagram of the partial top-view cross-sectional structure;

[0022] Figure 5 This is an embodiment of the present utility model. Figure 1 A schematic diagram of the left-side structure of the elastic component;

[0023] Figure 6 This is an embodiment of the present utility model. Figure 1 A schematic diagram of the left-side structure of the two first soundproof barriers at the top and bottom or the two second soundproof barriers at the top and bottom.

[0024] The following are the labeling elements in the figure:

[0025] 1. Pre-installed base beam; 11. Flange seat; 12. Elastic pad; 2. Mounting column; 3. First sound barrier; 31. Insert strip; 32. Encasing shell; 33. Lightweight sound-absorbing board; 34. Sound-absorbing hole; 35. Upper protruding strip; 36. Lower groove; 37. Connecting strip; 4. Second sound barrier; 41. Mating strip; 5. Insert seat; 51. Insert groove; 6. Telescopic movable seat; 61. Telescopic groove; 7. Elastic component; 71. Spiral elastic element; 72. Flexible sleeve pad layer; 73. Through cavity. Detailed Implementation

[0026] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a number" means two or more, unless otherwise explicitly specified.

[0028] Please refer to the following: Figures 1 to 6 The installation structure of the railway sound barrier provided by this utility model is described below. The railway sound barrier installation structure includes a pre-installed base beam 1, mounting columns 2, a first sound barrier 3, and a second sound barrier 4. Several pre-installed base beams 1 are provided and are arranged sequentially in the horizontal direction. An expansion joint is provided between two adjacent pre-installed base beams 1. Several mounting columns 2 are provided and are respectively connected to the top of the pre-installed base beams 1 in the vertical direction. The first sound barrier 3 and the second sound barrier 4 are both connected between two adjacent mounting columns 2.

[0029] Among them, two adjacent mounting columns 2 of the same pre-installed bottom beam 1 are respectively provided with plug-in seats 5 that are inserted and matched with the two sides of the first sound barrier 3. Two mounting columns 2 located on both sides of the expansion joint are respectively provided with telescopic movable seats 6. The telescopic movable seats 6 are provided with telescopic grooves 61 that extend in the vertical direction and are inserted and matched with the side edges of the second sound barrier 4. The telescopic grooves 61 are provided with elastic components 7. The elastic components 7 are set between the telescopic movable seats 6 and the second sound barrier 4 to cooperate with the expansion and contraction of the expansion joint.

[0030] Compared with the prior art, the railway sound barrier installation structure provided in this embodiment uses pre-embedded parts embedded in the ground to fix the pre-installed base beam 1 to the ground. The installation column 2 is connected above the pre-installed base beam 1. The first sound barrier 3 is connected between two adjacent installation columns 2 above the same pre-installed base beam 1. The second sound barrier 4 is connected between two installation columns 2 of different pre-installed base beams 1. Based on the expansion joint to meet the expansion and contraction performance of the two adjacent pre-installed base beams 1, the second sound barrier 4 is elastically connected between the two installation columns 2 by setting the elastic component 7, so as to cooperate with the expansion and contraction requirements of the expansion joint and avoid the stretching damage of the second sound barrier 4. The above structure is easy to install and simple to operate, solves the expansion and contraction problem of the structure, ensures the sound insulation effect of the sound barrier, and has good performance.

[0031] In this embodiment, the first sound barrier 3 and the second sound barrier 4 are two different specifications of structures, and are prefabricated in the factory. For multiple mounting columns 2 above the same pre-installed base beam 1, the first sound barrier 3 is used to insulate between adjacent mounting columns 2. For the area between two adjacent pre-installed base beams 1, the corresponding two mounting columns 2 are connected by the second sound barrier 4. An elastic component 7 is provided at this location to meet the expansion and contraction requirements of the expansion joint below, while ensuring the sound insulation effect and helping to extend the service life of the structure.

[0032] Please refer to one possible implementation as well. Figures 1 to 6 A flange seat 11 is connected to the top surface of the pre-installed bottom beam 1. The bottom wall of the flange seat 11 protrudes outward from the peripheral wall of the flange seat 11 and is welded to the top surface of the pre-installed bottom beam 1. The mounting column 2 is sleeved on the outer periphery of the flange seat 11 and is connected to the flange seat 11 through a connector.

[0033] In this embodiment, a flange seat 11 is provided on the top surface of the pre-installed bottom beam 1. The mounting column 2 is inserted into and sleeved on the outer periphery of the flange seat 11. The bottom wall of the pre-installed bottom beam 1 protrudes outward to increase the connection area between the flange seat 11 and the pre-installed bottom beam 1, thereby improving the reliability of the connection. The connector is used to connect the flange seat 11 and the mounting column 2, ensuring that the mounting column 2 can be stably sleeved on the outer periphery of the flange seat 11, thereby improving the reliability of the subsequent installation of the first sound barrier 3 and the second sound barrier 4.

[0034] Please refer to one possible implementation as well. Figures 1 to 6 The side of the plug-in socket 5 is provided with a plug groove 51 extending in the vertical direction, and the side of the first soundproof barrier 3 is provided with a plug strip 31 that is plugged into the plug groove 51. The cross-section of the plug groove 51 and the plug strip 31 are both dovetail shaped, and the width of the opening side of the plug groove 51 gradually decreases.

[0035] In this embodiment, the insertion strip 31 on the side edge of the first sound barrier 3 can be inserted into the insertion slot 51 of the insertion seat 5. Both the insertion slot 51 and the insertion strip 31 adopt a dovetail structure, which has a good lateral locking effect, preventing the first sound barrier 3 from detaching from the mounting column 2, and has a good connection effect, thus satisfying the sound insulation effect. In another possible implementation, please refer to [further details omitted]. Figures 1 to 6 The opening width of the telescopic groove 61 is smaller than the inner cavity width of the telescopic groove 61. The side of the second sound barrier 4 is provided with a mating strip 41 that can be inserted into the telescopic groove 61. The elastic component 7 is located on the side of the mating strip 41 away from the bottom wall of the groove 61, and is used to push the second sound barrier 4 towards the side closer to the mounting column 2.

[0036] In this embodiment, the side edge of the second sound barrier 4 is inserted into the expansion groove 61. The expansion movable seat 6 is elastically connected to the second sound barrier 4 through the elastic component 7, allowing the second sound barrier 4 to have a certain translational range to accommodate the expansion and contraction of the expansion joint. The opening width of the expansion groove 61 is smaller than the inner cavity width, and the cross-section of the expansion groove 61 is approximately "convex" shaped, ensuring that the elastic component 7 and the mating strip 41 are stably confined within the inner cavity of the expansion groove 61. The mating strip 41 is inserted into the expansion groove 61, with sufficient space in the depth direction of the expansion groove 61 to facilitate the installation of the elastic component 7. The elastic component 7 is located within the inner cavity of the expansion groove 61 and on the side of the mating strip 41 away from the bottom wall of the expansion groove 61. It can elastically push the second sound barrier 4 towards the side corresponding to the mounting column 2. When the expansion joint extends outward, the mating strip 41 can press against the elastic component 7, causing the elastic component 7 to contract to meet the deformation requirements and ensuring the structural stability of the second sound barrier 4.

[0037] In some embodiments, please refer to the following: Figures 1 to 6 The elastic component 7 includes a helical elastic element 71 and a flexible sleeve layer 72. The main axis of the helical elastic element 71 extends in a horizontal direction. The flexible sleeve layer 72 has a through cavity 73 that is horizontally through to accommodate the helical elastic element 71. The peripheral wall of the helical elastic element 71 abuts against the peripheral wall of the through cavity 73.

[0038] In this embodiment, the elastic component 7 adopts a combination of a spiral elastic element 71 and a flexible sleeve pad 72 to ensure elastic performance while ensuring an effective contact area with the end face of the mating strip 41, so that the entire structure has the ability to deform and meet the expansion and contraction requirements of the expansion joint.

[0039] In some embodiments, please refer to the following: Figures 1 to 6 Several second sound barriers 4 are arranged sequentially along the direction of the mounting column 2, and several elastic components 7 are arranged sequentially along the direction of the mounting column 2, corresponding one-to-one with the second sound barriers 4.

[0040] In this embodiment, according to the height requirements of the sound barrier, multiple second sound barriers 4 are arranged in an orderly manner from bottom to top. Correspondingly, multiple elastic components 7 are also arranged at intervals along the direction of the mounting column 2, which can correspond one-to-one with the second sound barriers 4 to meet the elastic expansion and contraction requirements of the structure and ensure the sound insulation performance at the preset height.

[0041] Please refer to one possible implementation as well. Figures 1 to 6 The first sound barrier 3 and the second sound barrier 4 both include a covering shell 32 and a lightweight sound-absorbing panel 33. The lightweight sound-absorbing panel 33 has sound-absorbing holes 34 on the side wall near the sound-facing surface. The cross-section of the sound-absorbing holes 34 is hexagonal, and the size of the opening side of the sound-absorbing holes 34 gradually increases.

[0042] In this embodiment, the first sound barrier 3 and the second sound barrier 4 are respectively constructed by combining a shell 32 and a lightweight sound-absorbing panel 33. The lightweight sound-absorbing panel 33 can effectively reduce the overall weight of the second sound barrier, thereby reducing the support load on the mounting column 2 and ensuring reliable installation of the structure.

[0043] Based on this, the sound-absorbing hole 34 adopts a hexagonal structure, and the size of the opening side gradually increases, which can effectively enhance the sound absorption performance of the lightweight sound-absorbing panel 33, while also reducing the material consumption of the lightweight sound-absorbing panel 33.

[0044] In some embodiments, please refer to the following: Figures 1 to 6 The upper surface of the first sound barrier 3 and the second sound barrier 4 is provided with a raised upper strip 35, and the lower surface of the first sound barrier 3 and the second sound barrier 4 is provided with a recessed lower groove 36. The lower groove 36 can be inserted and matched with the upper strip 35 of the first sound barrier 3 and the second sound barrier 4 located below. The cross sections of the upper strip 35 and the lower groove 36 are both isosceles trapezoids.

[0045] In this embodiment, the connection between the upper and lower first soundproof screens 3 is taken as an example. The lower groove 36 on the bottom wall of the upper first soundproof screen 3 can engage with the upper protrusion 35 on the top wall of the lower first soundproof screen 3, so that the upper and lower first soundproof screens 3 form an effective connection and avoid excessive gaps between them from affecting the sound insulation performance.

[0046] Specifically, both the upper protruding strip 35 and the lower groove 36 adopt an isosceles trapezoidal structure, which facilitates the installation of the first sound barrier 3 one by one from bottom to top, making the installation operation easier and improving installation efficiency. The upper and lower second sound barriers 4 adopt the same connection structure, which will not be described in detail here.

[0047] In some embodiments, please refer to the following: Figures 1 to 6 Below the first sound barrier 3 and the second sound barrier 4, horizontally extending connecting strips 37 are formed. Two connecting strips 37 are provided, one near each side wall of the first sound barrier 3 or the other near each side wall of the second sound barrier 4. The lower sound barrier 3 or the lower sound barrier 4 is located between the two connecting strips 37. The connecting strips 37 near the sides of the first sound barrier 3 can cooperate with the lower end face of the first sound barrier 3 to form a downward opening, thereby effectively limiting the lower sound barrier 3 and preventing rainwater and other external moisture from entering the gap between the upper and lower first sound barriers 3. The first sound barrier 3 uses the same connecting structure, which will not be described further here.

[0048] Please refer to one possible implementation as well. Figures 1 to 6 The installation column 2 is made of aluminum alloy, the pre-installed bottom beam 1 is made of steel, and an elastic pad 12 is provided between two adjacent pre-installed bottom beams 1.

[0049] In this embodiment, the mounting column 2 is made of aluminum alloy, which effectively reduces the overall weight of the material. The pre-installed base beam 1 is made of steel to meet the support strength requirements. The elastic pad 12 set between two adjacent pre-installed base beams 1 is used to cooperate with the expansion and contraction of the expansion joint, meeting the expansion and contraction requirements of the expansion joint.

[0050] The above-mentioned railway sound barrier installation structure uses pre-embedded parts embedded in the ground to fix the pre-installed base beam 1 to the ground. The mounting columns 2 are connected above the pre-installed base beam 1. The first sound barrier 3 is connected between two adjacent mounting columns 2 above the same pre-installed base beam 1. The second sound barrier 4 is connected between two mounting columns 2 of different pre-installed base beams 1. Based on the expansion joint to meet the expansion and contraction performance of the two adjacent pre-installed base beams 1, the second sound barrier 4 is elastically connected between the two mounting columns 2 by setting the elastic component 7, so as to cooperate with the expansion and contraction requirements of the expansion joint and avoid the second sound barrier 4 from being stretched and damaged. The above structure is easy to install and simple to operate, solves the problem of structural expansion and contraction, ensures the sound insulation effect of the sound barrier, and has good performance.

[0051] The above are merely preferred embodiments of the present utility model and are 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 railway sound barrier installation structure, characterized in that, The system includes a pre-installed base beam (1), mounting columns (2), a first sound barrier (3), and a second sound barrier (4). The pre-installed base beam (1) is provided in several units and is arranged sequentially in the horizontal direction. An expansion joint is provided between two adjacent pre-installed base beams (1). The mounting columns (2) are provided in several units and are respectively connected above the pre-installed base beams (1) in the vertical direction. The first sound barrier (3) and the second sound barrier (4) are both connected between two adjacent mounting columns (2). Among them, the two adjacent mounting columns (2) of the same pre-installed bottom beam (1) are respectively provided with plug-in seats (5) that are corresponding to the two sides of the first sound barrier (3) and are plugged into each other. The two mounting columns (2) located on both sides of the expansion joint are respectively provided with telescopic movable seats (6). The telescopic movable seats (6) are provided with telescopic grooves (61) that extend in the vertical direction and are plugged into the side edges of the second sound barrier (4). The telescopic grooves (61) are provided with elastic components (7). The elastic components (7) are disposed between the telescopic movable seats (6) and the second sound barrier (4) to cooperate with the expansion and contraction of the expansion joint.

2. The railway sound barrier installation structure as described in claim 1, characterized in that, A flange seat (11) is connected to the top surface of the pre-installed bottom beam (1). The bottom wall of the flange seat (11) protrudes outward from the peripheral wall of the flange seat (11) and is welded to the top surface of the pre-installed bottom beam (1). The mounting column (2) is sleeved on the outer periphery of the flange seat (11) and is connected to the flange seat (11) through a connector.

3. The railway sound barrier installation structure as described in claim 1, characterized in that, The side of the plug-in seat (5) is provided with a plug groove (51) extending in the vertical direction, and the side of the first soundproof screen (3) is provided with a plug strip (31) that is plugged into the plug groove (51). The cross-section of the plug groove (51) and the plug strip (31) are both dovetail shaped, and the width of the opening side of the plug groove (51) gradually decreases.

4. The railway sound barrier installation structure as described in claim 1, characterized in that, The opening width of the telescopic groove (61) is smaller than the inner cavity width of the telescopic groove (61). The side of the second soundproof screen (4) is provided with a mating strip (41) that can be inserted into the telescopic groove (61). The elastic component (7) is located on the side of the mating strip (41) away from the bottom wall of the telescopic groove (61) and is used to push the second soundproof screen (4) towards the side close to the mounting column (2).

5. The railway sound barrier installation structure as described in claim 4, characterized in that, The elastic component (7) includes a helical elastic element (71) and a flexible sleeve layer (72). The main axis of the helical elastic element (71) extends in a horizontal direction. The flexible sleeve layer (72) has a through cavity (73) that extends horizontally to accommodate the helical elastic element (71). The peripheral wall of the helical elastic element (71) abuts against the peripheral wall of the through cavity (73).

6. The railway sound barrier installation structure as described in claim 5, characterized in that, The second sound barrier (4) is arranged in a plurality of units along the direction of the mounting column (2), and the elastic component (7) is arranged in a plurality of units along the direction of the mounting column (2) and is configured in a one-to-one correspondence with the second sound barrier (4).

7. The railway sound barrier installation structure as described in any one of claims 1-6, characterized in that, Both the first sound barrier (3) and the second sound barrier (4) include a covering shell (32) and a lightweight sound-absorbing plate (33). The lightweight sound-absorbing plate (33) has a sound-absorbing hole (34) on the side wall near the sound-facing surface. The cross-section of the sound-absorbing hole (34) is hexagonal, and the opening side size of the sound-absorbing hole (34) gradually increases.

8. The railway sound barrier installation structure as described in claim 7, characterized in that, The upper end face of the first sound barrier (3) and the second sound barrier (4) is provided with a raised upper convex strip (35), and the lower end face of the first sound barrier (3) and the second sound barrier (4) is provided with a recessed lower groove (36). The lower groove (36) can be inserted and cooperated with the upper convex strip (35) of the first sound barrier (3) and the second sound barrier (4) located below. The cross-section of the upper convex strip (35) and the lower groove (36) are both isosceles trapezoids.

9. The railway sound barrier installation structure as described in claim 8, characterized in that, The first soundproof barrier (3) and the second soundproof barrier (4) are further provided with horizontally extending connecting strips (37). The connecting strips (37) are provided in two, respectively close to the two side walls of the first soundproof barrier (3) or the two side walls of the second soundproof barrier (4). The first soundproof barrier (3) or the second soundproof barrier (4) located below is located between the two connecting strips (37).

10. The railway sound barrier installation structure as described in any one of claims 1-6, characterized in that, The mounting column (2) is made of aluminum alloy, the pre-installed bottom beam (1) is made of steel, and an elastic pad (12) is provided between two adjacent pre-installed bottom beams (1).

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