Bridge closed type sound barrier snow falling prevention safety device based on snow block cutting

Abstract

The invention relates to the technical field of bridge snow falling prevention, and discloses a bridge closed type sound barrier snow falling prevention safety device based on snow block cutting, a closed type sound barrier comprises a steel stand column and a horizontal main beam, and arc transition sections are arranged between the two ends of the steel stand column and the two ends of the horizontal main beam; the snow falling prevention installation device comprises two supporting stand columns, a cross beam, a plurality of vertical snow cutting blades and a plurality of transverse snow cutting blades. The cross beam is perpendicularly fixed to the top ends of the two supporting stand columns, the bottom ends of the two supporting stand columns are fixed to the end, close to the arc transition section, of the horizontal main beam, the vertical snow cutting blades are arrayed between the two supporting stand columns in the length direction of the closed sound barrier, the top ends of the vertical snow cutting blades are fixed to the cross beam, and the thickness direction of the vertical snow cutting blades is the length direction of the closed sound barrier; the transverse snow cutting blade is arranged between the lower middle portions of the two supporting stand columns and perpendicularly fixed to the vertical snow cutting blade. The integrity of hardened snow blocks is destroyed through a cutting mechanism, large accumulated snow blocks are divided into small fragments, and the problem of impact force overload caused by concentrated falling of snow bodies is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of snowfall prevention for fully enclosed bridge sound barriers, and in particular to a snowfall prevention safety device for enclosed bridge sound barriers based on snow block cutting. Background Art

[0002] To reduce the impact of traffic noise on elevated bridges, fully enclosed sound barriers are usually installed along the route. The main load-bearing structure of such sound barriers is generally made of steel. Its core load-bearing components mainly include:

[0003] Vertical columns: Made of H-shaped steel, they are anchored to the main structure of the bridge at a certain distance along the longitudinal direction of the bridge, bearing the main structural loads, such as the axial force of self-weight and the bending moment of wind load.

[0004] Horizontal main beam: H-shaped steel is used, and both ends are reliably connected to the vertical columns, directly supporting the sound barrier unit panels and transmitting their loads, such as deadweight and wind pressure. At the same time, it forms a lateral force resisting frame with the columns to bear plane shear force.

[0005] Arc-shaped transition section: Custom H-shaped steel formed by three-dimensional bending and torsion is used at the vertical corners of the horizontal main beam and the vertical column to ensure the rigid connection of the spatial structure and continuous load transfer.

[0006] Steel purlins: Made of C / Z type cold-bent thin-walled steel, they are set within the main frame grid of the bridge to enhance the local support of the screen and the overall stability of the structure.

[0007] Regarding the anti-snowfall technology for fully enclosed sound barriers on bridges, the existing technologies all use passive blocking designs to intercept accumulated snow. For example, the Chinese invention patent "Anti-snowfall device suitable for fully enclosed sound barriers on bridges" with application number CN202420785000.6 discloses a solution for preventing accumulated snow from falling by forming a barrier structure with steel curved beams and steel columns. The structure includes steel columns and steel curved beams. The lower surface of the steel curved beams is symmetrically fixedly connected to the steel columns, and the steel curved beams and the steel columns form a complete fully enclosed sound barrier. The upper surface of the steel curved beams is symmetrically fixedly connected to the steel support base plate. The upper surface of the steel support base plate is fixedly connected to the inner cavity of the steel support plate, which is fixedly connected to a square steel pipe. The outer wall of the square steel pipe is fixedly connected to a baffle. Through physical blocking, accumulated snow is effectively prevented from sliding off the sound barrier. However, this type of passive blocking design has the following inherent defects in actual applications:

[0008] Structural stress and failure risks: Snow barriers must withstand the static load of snow and the dynamic load of wind and snow for a long time. Especially when there is heavy snowfall or the snow is compacted, it is easy to cause deformation of the supporting structure, cracking of welds, or even collapse of the entire structure, which in turn exacerbates safety hazards.

[0009] The risk of secondary falls is prominent: Passive blocking can only delay the sliding of snow, but cannot actively intervene in the state of the snow. When the snow accumulates to a critical mass on the surface of the snow barrier, it may still cause large chunks of snow to fall due to temperature changes, bridge vibrations, or wind, with an impact force even greater than that of natural sliding without a blocking device.

[0010] Insufficient maintenance cost and adaptability: The gaps between the snow guards are easily blocked by ice or wet snow, and require frequent manual cleaning to maintain functionality. The sound barrier structure is difficult to climb and poses a safety hazard.

[0011] The above problems show that the passive blocking design essentially only transfers risks by "blocking". It can neither solve the problem of concentrated gravity release after the snow blocks are compacted, nor can it adapt to the complex climate and long-term safety needs of bridge structures. Summary of the Invention

[0012] The purpose of the present invention is to destroy the integrity of compacted snow blocks through a cutting mechanism, divide large pieces of snow into small pieces, and fundamentally solve the problem of impact force overload caused by concentrated falling of snow in passive blocking type snowfall prevention devices.

[0013] In order to achieve the above object, the present invention provides the following technical solutions:

[0014] A snow block cutting-based bridge closed sound barrier anti-snow falling safety device includes snow falling prevention installation devices located on both sides of the closed sound barrier width, with at least one snow falling prevention installation device arranged along the length of the closed sound barrier on each side of the closed sound barrier width;

[0015] The closed sound barrier includes a horizontal main beam and steel columns located at both ends of the horizontal main beam. Arc transition sections are provided between the steel columns and both ends of the horizontal main beam. The steel columns are anchored to the main structure of the bridge.

[0016] The snow-fall prevention installation device includes two supporting columns, a crossbeam, a plurality of vertical snow-cutting blades, and a transverse snow-cutting blade;

[0017] The two ends of the crossbeam are vertically fixed to the top ends of the two supporting columns, and the bottom ends of the two supporting columns are fixed to one end of the horizontal main beam close to the arc transition section. All vertical snow-cutting blades are arrayed between the two supporting columns along the length direction of the closed sound barrier. The top ends of the vertical snow-cutting blades are fixed to the crossbeam, and the thickness direction of the vertical snow-cutting blades is the length direction of the closed sound barrier.

[0018] The transverse snow-cutting blade is arranged between the middle and lower parts of the two supporting columns and is vertically fixed to the middle and lower parts of each vertical snow-cutting blade; a gap is formed between the bottom end of the vertical snow-cutting blade and the closed sound barrier;

[0019] When multiple snow-fall prevention installation devices are arranged on each side of the width of the closed sound barrier, adjacent snow-fall prevention installation devices share one supporting column.

[0020] Furthermore, there is a gap between the bottom end of the vertical snow-cutting blade and the closed sound barrier.

[0021] Furthermore, the horizontal main beam is made of H-shaped steel and is arranged in an I-shape, and the supporting columns are fixed on the top surface of the upper flange of the H-shaped steel.

[0022] Furthermore, the anti-snowfall installation device also includes two base plates and a plurality of column foot stiffening plates, the bottom end of each supporting column is fixed with a base plate, and the base plate is anchored to the upper flange of the H-shaped steel by bolts;

[0023] The column foot stiffening plate is arranged between the supporting column and the bottom plate.

[0024] Furthermore, the bolts are high-strength bolts.

[0025] Furthermore, the bottom plate is provided with oblong holes for mounting bolts.

[0026] Furthermore, the anti-snow falling installation device also includes an L-plate with a magnetic bottom surface, the bottom surface of the L-plate is sucked onto the upper flange of the H-shaped steel, the two bottom plates are backed against the vertical surface of the L-plate, and the holes for installing bolts on the bottom plate are processed on site and then the L-plate is removed.

[0027] Furthermore, it also includes a vertical stainless steel grille assembly located below the anti-snow falling installation device, the stainless steel grille assembly including two grille columns, grille crossbeams, grille column foot stiffening plates, high-strength bolts, stainless steel grille plates, and two grille bottom plates;

[0028] The two grille columns and the grille crossbeam form a door-shaped frame, the stainless steel grille plate is arranged in the door-shaped frame, the grille bottom plate is fixed to the bottom end of the grille column, the grille bottom plate is anchored to the closed sound barrier by high-strength bolts, and the grille column foot stiffening plate is connected between the grille bottom plate and the grille column;

[0029] The opening size of the stainless steel grid plate is 3-5 cm.

[0030] Furthermore, steel purlins are arranged between adjacent H-shaped steels in the length direction of the bridge to enhance the strength of the closed sound barrier, and the supporting columns are arranged at the intersection of the horizontal main beam and the steel purlins.

[0031] Furthermore, the vertical snow cutting blade and the horizontal snow cutting blade are made of stainless steel plates.

[0032] In the above technical solution, the present invention has the following beneficial effects:

[0033] 1. Actively intervene in the state of snow: Use horizontal and vertical snow-cutting blades to cut snow blocks, use the cutting mechanism to destroy the integrity of compacted snow blocks, and divide large snow blocks into small pieces, fundamentally solving the problem of impact overload caused by concentrated snow falling. In addition, by installing it on the horizontal main beam of the closed sound barrier, the bridge micro-vibration caused by the passage of vehicles is used to make the device generate high-frequency and low-amplitude vibrations, automatically shaking off the sticking snow fragments.

[0034] 2. Reduce structural loads and failure risks: Abandoning traditional passive load-bearing designs, lightweight components such as horizontal and vertical snow-cutting blades are used to prevent deformation or damage to the sound barrier and snow barrier due to long-term static loads from accumulated snow.

[0035] 3. Improve adaptability to complex environments: The snow-cutting blade is made of high-strength, corrosion-resistant stainless steel to ensure excellent anti-freeze adhesion and wear resistance in low-temperature, high-humidity environments. At the same time, the non-direct cutting parts of the device are treated with weather-resistant coating to effectively resist rain and snow erosion, snow-melting agent corrosion, and material degradation caused by freeze-thaw cycles, thereby extending the overall life of the device and reducing the failure rate and maintenance frequency caused by environmental corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0037] Figure 1 A schematic structural diagram of the closed sound barrier provided by the present invention;

[0038] Figure 2 A schematic diagram of the front structure of the snow-fall prevention installation device provided by the present invention;

[0039] Figure 3 A schematic diagram of the top view of the snow-fall prevention installation device provided by the present invention;

[0040] Figure 4 A schematic side view of the structure of the snow-fall prevention installation device provided by the present invention;

[0041] Figure 5 A schematic structural diagram of the stainless steel grille assembly provided by the present invention;

[0042] Figure 6 A schematic side view of the vertical snow-cutting blade and the horizontal snow-cutting blade provided by the present invention;

[0043] Figure 7 This is a schematic diagram of the top structure of the base plate provided by the present invention.

[0044] Reference numerals:

[0045] Steel column 1, horizontal main beam 2, stainless steel grating plate 3, stainless steel grating assembly 4, supporting column 5, crossbeam 6, vertical snow cutting blade 7, horizontal snow cutting blade 8, column base stiffener 9, bottom plate 10, oblong hole 101, L-plate 11, steel purlin 12. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0047] It should be noted that the terms "above", "one end", "upper", etc. used in this article indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. Similar expressions are only for illustrative purposes, and do not indicate or imply 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 invention; in addition, the terms "one part", "two parts", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] Example 1:

[0049] like Figure 1-7 The bridge enclosed sound barrier anti-snow falling safety device shown is based on snow block cutting, including anti-snow falling installation devices located on both sides of the width of the enclosed sound barrier, and there is at least one anti-snow falling installation device arranged along the length direction of the enclosed sound barrier on each side of the width of the enclosed sound barrier.

[0050] The closed sound barrier includes a horizontal main beam 2 and steel columns at both ends of the horizontal main beam 2. A circular arc transition section is fixed between the steel columns 1 and the ends of the horizontal main beam 2. The horizontal main beam 2 is approximately horizontal as a whole. Multiple steel columns 1 are anchored to the main structure of the bridge along the length of the bridge. The steel columns 1 are fixed to the circular arc transition section. Figure 1 In the cross section of the closed sound barrier shown, two steel columns, two arc transition sections and a horizontal main beam 2 form the closed sound barrier.

[0051] The snow-fall prevention installation device includes two supporting columns 5 , a crossbeam 6 , a plurality of vertical snow-cutting blades 7 , and a transverse snow-cutting blade 8 .

[0052] The ends of the crossbeam 6 are vertically fixed to the tops of the two support columns 5, forming a gantry frame for mounting multiple vertical snow-cutting blades 7 and transverse snow-cutting blades 8. The bottom ends of the two support columns 5 are fixed to the end of the horizontal main beam 2 near the arc transition section. This is to facilitate the installation of the support columns and to ensure that the snow generates a greater tangential force under its own weight to ensure a cutting effect.

[0053] All vertical snow-cutting blades 7 are arrayed between two supporting columns 5 along the length direction of the closed sound barrier. The top ends of the vertical snow-cutting blades 7 are fixed to the crossbeam 6. The thickness direction of the vertical snow-cutting blades 7 is the length direction of the closed sound barrier.

[0054] The transverse snow-cutting blade 8 is arranged between the middle and lower parts of the two supporting columns 5 and is fixed vertically to the middle and lower parts of each vertical snow-cutting blade 7; this can minimize the number of vertical snow-cutting blades 7 and transverse snow-cutting blades 8 and reduce the weight of the entire device. Multiple vertical snow-cutting blades 7 and transverse snow-cutting blades 8 can simultaneously cut the snow horizontally and vertically, thereby dispersing the snow. The position of the transverse snow-cutting blade 8 is designed according to the actual cutting size requirements. Figure 6 As shown, the front and rear widths of the transverse snow-cutting blade 8 and the vertical snow-cutting blade 7 are aligned with each other, and the transverse snow-cutting blade 8 is arranged at about the lower quarter of the vertical snow-cutting blade 7 .

[0055] When multiple snow-fall prevention devices are arranged on each side of the width of the closed sound barrier, adjacent snow-fall prevention devices share a support column 5. The number and length of the snow-fall prevention devices are selected as needed according to the length of the closed sound barrier. When multiple snow-fall prevention devices are arranged on each side of the width of the closed sound barrier, it is convenient for transportation, installation, disassembly and maintenance.

[0056] There is a gap between the bottom end of the vertical snow-cutting blade 7 and the closed sound barrier, which is conducive to the passage of light snow and rainwater. The gap is preferably 10-20 mm.

[0057] Preferably, the vertical snow-cutting blades 7 and the transverse snow-cutting blades 8 are made of stainless steel plates to ensure structural durability while reducing structural weight. The transverse snow-cutting blades 8 are 3mm thick stainless steel plates, the distance between adjacent vertical snow-cutting blades 7 is 150mm, and the height of the vertical snow-cutting blades 7 is 290mm.

[0058] Preferably, the horizontal main beam 2 is made of H-shaped steel and arranged in an I-shape, and the support column 5 is fixed on the top surface of the upper flange of the H-shaped steel. The length direction of the H-shaped steel is arranged along the width direction of the bridge. Along the length direction of the bridge, adjacent H-shaped steels are fixed together by connecting parts such as purlins. Figure 2 The figure shows the longitudinal cross-section of the bridge. The horizontal main beam 2 has multiple H-shaped steels arranged at intervals. The two H-shaped steels are connected as a whole through purlins. In order to facilitate the installation of purlins on the H-shaped steels, connecting plates are welded on both sides of the web of each H-shaped steel. Each connecting plate is fixed to the purlin by bolts.

[0059] Preferably, the anti-snowfall installation device also includes two base plates 10 and multiple column base stiffening plates 9. The bottom end of each supporting column 5 is fixed with a base plate 10, and the base plate 10 is anchored to the upper flange of the H-shaped steel by bolts. The column base stiffening plate 9 is fixed and arranged between the supporting column 5 and the base plate 10, and plays the role of a reinforcing rib. Multiple column base stiffening plates 9 are evenly distributed around the supporting column 5, and preferably the number of column base stiffening plates 9 is 4 or 2. The H-shaped steel includes an upper flange (upper wing plate) and a lower flange (lower wing plate) arranged up and down, with a web between the two flanges, and the base plate is attached to the upper flange, and the base plate is perpendicular to the axis of the supporting column 5.

[0060] High-strength bolts are preferably used, anchored to the H-shaped steel of the sound barrier through the base plate and high-strength bolts. Stainless steel column foot stiffeners (9) are installed at the column base to effectively ensure the safety of the structure. The entire device is mounted on the horizontal main beam of the sound barrier with high-strength bolts. The micro-vibration of the bridge caused by traffic will cause the device to generate high-frequency, low-amplitude vibrations, automatically shaking off stuck snow fragments.

[0061] The base plate 10 is provided with oblong holes 101 for mounting bolts. For example, the base plate is pre-set with oblong holes, which allow for ±10mm longitudinal displacement and displacement along the length of the bridge. These holes are used to adjust for horizontal positioning errors during on-site assembly and to accommodate thermal expansion and contraction of the H-beam of the enclosed sound barrier.

[0062] The anti-snowfall installation device also includes an L-plate 11 with a magnetic bottom surface. The bottom surface of the L-plate 11 is sucked onto the upper flange of the H-shaped steel. The two bottom plates 10 are backed against the vertical surface of the L-plate 11. The holes for installing bolts on the bottom plate 10 are processed on site and then the L-plate 11 is removed. The L-plate 11 can be equipped during installation. The two ends of the L-plate 11 have a magnetic attraction function by installing magnet sheets, and the magnet sheets are made of low-temperature resistant strong magnetic material. Usage process: ① Adsorb the L-plate 11 onto the upper flange of the sound barrier H-shaped steel; ② Position the bottom plate close to the vertical surface of the L-plate 11; ③ Remove the L-plate 11 after drilling to complete the high-precision bolt installation.

[0063] Steel purlins 12 are arranged between adjacent H-beams along the length of the bridge to enhance the strength of the enclosed sound barrier. Support columns 5 are located at the intersection of the horizontal main beam 2 and the steel purlins 12. The steel purlins are located on the lower side of the upper flange, while the support columns 5 are located on the upper side of the upper flange. This strengthens the enclosed sound barrier where the snow protection device is installed, facilitating fixation and ensuring the stability of the device structure.

[0064] Example 2

[0065] In areas with dense traffic, severe snow conditions, or those under priority for prevention and control, a stainless steel grille can be installed approximately 1 meter below the snow barrier. This grille can secondary-segment the small pieces of snow formed by the snow barrier above, effectively attenuating the kinetic energy of the snow fragments, causing them to eventually slide down as snow fragments. The cutting action is primarily accomplished passively by the relative motion between the bottom of the snow fragments and the stainless steel grille as they slide down the arc transition section of the sound barrier under the action of gravity.

[0066] Specifically, based on the first embodiment, it also includes a vertical stainless steel grille assembly 4 located below the anti-snow falling installation device. The stainless steel grille assembly includes two grille columns, grille crossbeams, grille column base stiffening plates, high-strength bolts, stainless steel grille plates, and two grille bottom plates.

[0067] Two grille columns and a grille crossbeam form a portal frame, within which the stainless steel grille plate 3 is mounted. The grille base is fixed to the bottom ends of the grille columns, perpendicular to the axis of the columns. The grille base is bolted to the upper flange of the H-shaped steel used in the closed sound barrier using high-strength bolts. The upper flange of the H-shaped steel typically has an arc-shaped transition section. A grille column foot stiffener connects the grille base and the grille columns, acting as a reinforcing rib.

[0068] The opening width of the stainless steel grating plate 3 is 3-5 cm. The vertical height between the grating bottom plate and the bottom plate of the snow-fall prevention installation device is preferably 1 m.

[0069] The stainless steel grating assembly is similar to the snow protection device. It can be a pre-assembled grating, continuously welded to the door frame, with a 3-5cm gap between the gratings. The stainless steel grating utilizes the inherent micro-vibration characteristics of bridges to effectively shake off most loose snow debris in common snow adhesion situations.

[0070] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A bridge enclosed sound barrier anti-snow falling safety device based on snow block cutting, characterized in that: It includes snow-falling prevention installation devices located on both sides of the width of the closed sound barrier, and at least one snow-falling prevention installation device is arranged along the length direction of the closed sound barrier on each side of the width of the closed sound barrier; The closed sound barrier comprises a horizontal main beam (2) and steel columns (1) located at both ends of the horizontal main beam (2), wherein arc transition sections are provided between the steel columns (1) and both ends of the horizontal main beam (2), and the steel columns (1) are anchored to the main structure of the bridge; The snow-fall prevention installation device comprises two supporting columns (5), a crossbeam (6), a plurality of vertical snow-cutting blades (7), and a transverse snow-cutting blade (8); The two ends of the crossbeam (6) are vertically fixed to the top ends of the two supporting columns (5), the bottom ends of the two supporting columns (5) are fixed to one end of the horizontal main beam (2) close to the arc transition section, all the vertical snow-cutting blades (7) are arrayed between the two supporting columns (5) along the length direction of the closed sound barrier, the top ends of the vertical snow-cutting blades (7) are fixed to the crossbeam (6), and the thickness direction of the vertical snow-cutting blades (7) is the length direction of the closed sound barrier; The transverse snow-cutting blade (8) is arranged between the middle and lower parts of the two supporting columns (5) and is vertically fixed to the middle and lower parts of each vertical snow-cutting blade (7); a gap is formed between the bottom end of the vertical snow-cutting blade (7) and the closed sound barrier; When a plurality of anti-snowfall installation devices are arranged on each side of the width of the closed sound barrier, adjacent anti-snowfall installation devices share a supporting column (5).

2. The bridge enclosed sound barrier anti-snow falling safety device based on snow block cutting according to claim 1 is characterized in that: The horizontal main beam (2) is made of H-shaped steel and is arranged in an I-shape, and the supporting column (5) is fixed on the top surface of the upper flange of the H-shaped steel.

3. The bridge enclosed sound barrier anti-snow falling safety device based on snow block cutting according to claim 2 is characterized in that: The snow-fall prevention installation device further comprises two base plates (10) and a plurality of column foot stiffening plates (9), the bottom end of each supporting column (5) is fixed with a base plate (10), and the base plate (10) is anchored to the upper flange of the H-shaped steel by bolts; The column foot stiffening plate (9) is arranged between the supporting column (5) and the bottom plate (10).

4. The bridge enclosed sound barrier anti-snow falling safety device based on snow block cutting according to claim 3 is characterized in that: The bolts are high-strength bolts.

5. The bridge enclosed sound barrier anti-snow falling safety device based on snow block cutting according to claim 3 is characterized in that: The bottom plate (10) is provided with an oblong hole (101) for mounting a bolt.

6. The bridge enclosed sound barrier anti-snow falling safety device based on snow block cutting according to claim 3 is characterized in that: The snow-fall prevention installation device further comprises an L-plate (11) with a magnetic bottom surface, wherein the bottom surface of the L-plate (11) is attracted to the upper flange of the H-shaped steel, and the two bottom plates (10) are backed against the vertical surface of the L-plate (11). After the holes for installing bolts on the bottom plate (10) are processed on site, the L-plate (11) is removed.

7. The bridge enclosed sound barrier anti-snow falling safety device based on snow block cutting according to claim 1 is characterized in that: It also includes a stainless steel grille assembly (4) located below the anti-snowfall installation device, the stainless steel grille assembly (4) including two grille columns, a grille crossbeam, a grille column foot stiffening plate, high-strength bolts, a stainless steel grille plate (3), and two grille bottom plates; The two grid posts and the grid crossbeam form a door-shaped frame, the stainless steel grid plate (3) is arranged in the door-shaped frame, the grid bottom plate is fixed to the bottom end of the grid post, the grid bottom plate is anchored to the closed sound barrier by high-strength bolts, and the grid column foot stiffening plate is connected between the grid bottom plate and the grid post; The opening size of the stainless steel grid plate (3) is 3-5 cm.

8. The bridge enclosed sound barrier anti-snow falling safety device based on snow block cutting according to claim 2 is characterized in that: Steel purlins (12) are arranged between adjacent H-shaped steels in the length direction of the bridge to enhance the strength of the closed sound barrier, and the supporting columns (5) are arranged at the intersection of the horizontal main beam (2) and the steel purlins (12).

9. The bridge enclosed sound barrier anti-snow falling safety device based on snow block cutting according to claim 3 is characterized in that: The vertical snow cutting blade (7) and the horizontal snow cutting blade (8) are made of stainless steel plates.

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