Double-layer wind barrier for high-speed railway bridge in sandstorm environment
Through the design of the double-layer wind barrier, the combination of outer corrugated steel plate units and inner inclined blinds, the problem of insufficient wind and sand fixation of single-layer wind barriers is solved, and the safe operation and sand collection of bridges in harsh environments is achieved, which improves the wind and sand fixation effect of high-speed railway bridges.
Patent Information
- Application Number
- CN202422582324.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The single-layer open-hole wind barrier of existing high-speed railway bridges has limited wind protection effect, cannot take into account sand fixation, and is prone to damage in harsh environments and has poor durability.
A double-layer wind barrier is designed, with the outer layer being an outer wind barrier composed of corrugated steel plate unit and a different hole unit. The inner layer is an inner wind barrier with inclined shutters. The outer wind barrier increases turbulence through the different hole unit to reduce wind speed, and the inner wind barrier raises the wind speed and flows, and sand grains are collected in combination with the sand collector.
Effectively reduce incoming wind speed, reduce interference to train operation, improve safety, and take into account the windproof and sand fixing function through a double-layer structure to avoid sand accumulation on the track and extend the equipment life.
Smart Images
Figure CN223281227U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind and sand prevention equipment, in particular to a double-layer wind barrier for high-speed railway bridges in wind and sand environments. Background Art
[0002] Strong crosswinds not only pose a direct threat to the safety and smooth operation of high-speed railway trains, but the sand particles carried by strong crosswinds can also cause erosion and damage to railway lines, such as track surface wear, sand accumulation on the tracks, and signal equipment failures.
[0003] Currently, the primary sand control measure in the Gobi Desert is to install sand barriers 30-50 meters on both sides of high-speed railway lines. While existing high-speed railway sand control systems intercept coarse particles (medium, coarse, and very coarse) in windblown sand, fine sand and suspended particles can still escape the protection systems, settle on the high-speed railway lines, and be drawn into the train equipment compartments. Furthermore, to prevent high-speed trains from derailing or overturning due to strong crosswinds, windbreak structures, including windbreak walls, perforated wind barriers, and windbreak tunnels, are often installed along high-speed railway lines near the outside of the catenary columns. While windbreak walls and windbreak tunnels offer some wind protection, they are expensive, difficult to construct, and unsuitable for bridge structures.
[0004] Currently, perforated wind barriers are commonly used on both sides of bridge decks along high-speed railway lines. However, after years of operation and practice, this type of windbreak structure still has some technical issues that need to be improved. The main issue is that single-layer perforated wind barriers have limited wind protection and cannot also provide sand fixation.
[0005] Therefore, in order to ensure the safety of high-speed trains when passing through bridges in strong wind and sand environments, especially at low piers, it is particularly important to develop and design a new type of wind barrier that can overcome the above technical problems. Utility Model Content
[0006] In order to solve the above technical problems, the utility model provides a double-layer wind barrier for high-speed railway bridges in windy and sandy environments. The outer corrugated steel plate unit can not only resist strong wind loads by itself, but also some strong winds can increase their turbulence and reduce the incoming wind speed after passing through the outer wind barrier through the different-hole units; the inclined blades in the inner layer can further raise the direction of the incoming wind speed to above the critical height for driving safety, reducing the impact of strong winds on the safety of train operation; the inner and outer double-layer wind barriers cooperate with each other, and are very suitable for wind and sand fixation of high-speed railway bridges in windy and sandy environments.
[0007] The double-layer wind barrier used for high-speed railway bridges in a windy and sandy environment in this solution specifically includes an outer wind barrier and an inner wind barrier with a gap between them. The outer wind barrier is composed of a plurality of corrugated steel plate units connected in sequence in a first direction, and the corrugated steel plate units are provided with at least one row of different-hole units in a second direction, the second direction being perpendicular to the first direction, the different-hole units including at least two openings of different shapes and / or areas, so that the turbulence of the airflow is increased after passing through adjacent openings of the different-hole units, and the inner wind barrier includes louvers.
[0008] The technical solution further defined in the present utility model is:
[0009] Furthermore, the corrugated steel plate unit includes a first vertical plate, a first inclined plate, a second vertical plate and a second inclined plate connected in sequence to form a corrugated structure.
[0010] Furthermore, the first vertical plate, the first inclined plate, the second vertical plate and the second inclined plate are all provided with different hole units.
[0011] Furthermore, the opening area of the corrugated steel plate unit on the external wind barrier decreases step by step from top to bottom.
[0012] Furthermore, the blades of the shutter are arranged obliquely, and the lower ends of the blades are close to the side of the external wind barrier.
[0013] Furthermore, a sand collecting box with a sand discharge pipe is provided below the outer wind barrier and the inner wind barrier.
[0014] Furthermore, the openings include circular holes and elliptical holes.
[0015] Furthermore, the external wind barrier material is weather-resistant steel plate.
[0016] Furthermore, the outer wind barrier and the inner wind barrier are parallel and respectively connected to the columns, and the columns are connected by fixing members.
[0017] Furthermore, the inner wind barrier is connected to the column through an angle bracket.
[0018] The beneficial effects of the present invention are as follows: the double-layer wind barrier provided by the present invention for high-speed railway bridges in windy and sandy environments has a corrugated steel plate unit and a different-hole unit designed on the outer wind barrier. The corrugated steel plate unit can not only resist strong winds by itself, but also increase the turbulence of some strong winds after passing through the outer wind barrier through the different-hole unit, thereby reducing the magnitude of the incoming wind speed; the opening area of the corrugated steel plate unit adopts a top-to-bottom gradual transition form, thereby ensuring a certain opening rate while more effectively blocking sand particles of different particle sizes outside the opening; the coordinated use of multiple inclined blades can raise the flow direction of the incoming wind speed to above the critical height for driving safety, effectively reducing the interference of the incoming wind on the stability of train driving, ensuring the traffic capacity of the bridge and improving the safety of train driving; compared with the single-layer wind barrier, the double-layer wind barrier of the present invention works in coordination, taking into account the functions of wind and sand prevention, and can block sand particles as they pass through the wind barrier, causing them to accumulate in a sand collecting box at the bottom of the wind barrier, and then using a sand removal device to regularly remove them to prevent sand and gravel from accumulating on the train tracks. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic structural diagram of a double-layer wind barrier in an embodiment of the present utility model;
[0020] Figure 2 This is a side view of a corrugated steel plate unit in an embodiment of the present utility model;
[0021] Figure 3 This is a front view of the inner and outer wind barriers in the embodiment of the present utility model;
[0022] Figure 4 A three-dimensional diagram of the inner and outer wind barriers in an embodiment of the present invention;
[0023] Figure 5 This is a front view of the inner wind barrier in an embodiment of the present utility model;
[0024] Figure 6 This is a three-dimensional diagram of the inner wind barrier in an embodiment of the present utility model;
[0025] Figure 7 This is a side view of a double-layer wind barrier in an embodiment of the present utility model;
[0026] Figure 8 This is a schematic diagram of two double-layer wind barriers installed on a bridge in an embodiment of the present invention;
[0027] Among them: 100, external wind barrier; 110, corrugated steel plate unit; 111, first vertical plate; 112, first inclined plate; 113, second vertical plate; 114, second inclined plate; 120, different hole unit; 121, first opening; 122, second opening; 200, internal wind barrier; 300, column; 400, sand collecting box; 500, sand discharge pipe; 600, bridge. DETAILED DESCRIPTION
[0028] At present, open-type wind barriers are commonly used on both sides of bridge decks along high-speed railways. However, after years of operation and practice, this type of windbreak structure still has some technical problems that need to be improved: (1) Single-layer open-type wind barriers cannot play the role of both windbreak and sand fixation; (2) Open-type wind barriers are prone to bolt loosening, breakage, and windbreak damage, etc., which are insufficient in strength design; (3) Open-type wind barriers are prone to rust and corrosion on the steel plate surface in harsh natural environments such as high temperature, extreme cold, dryness, strong wind and sand, and strong ultraviolet rays, and the durability problem is very prominent. In response to these problems, the present utility model will combine the drawings and text to specifically explain the double-layer wind barrier proposed in this application for high-speed railway bridges in windy and sandy environments.
[0029] The double-layer wind barrier provided in this embodiment for high-speed railway bridges in windy and sandy environments is as follows: Figure 1 As shown, it includes an outer wind barrier 100 and an inner wind barrier 200 with a gap between them. The outer wind barrier 100 and the inner wind barrier 200 are parallel and connected to columns 300 at both ends. The columns 300 are connected by I-shaped steel and bolts. A sand collecting box 400 is connected below and the sand collecting box 400 is provided with a sand discharge pipe 500.
[0030] See also Figure 2 In this embodiment, the external wind shield 100 is composed of a plurality of corrugated steel plate units 110 connected in sequence in the vertical direction. Each corrugated steel plate unit 110 includes a first vertical plate 111, a first inclined plate 112, a second vertical plate 113 and a second inclined plate 114 connected in sequence to form a corrugated structure.
[0031] like Figure 3-4 As shown, each corrugated steel plate unit 110 is horizontally provided with four rows of heterogeneous hole units 120. These heterogeneous hole units 120 are specifically arranged in a repeated sequence of two openings of unequal shapes and areas. This embodiment uses a first opening 121 and a second opening 122 as an example. This creates strong turbulence when air passes through adjacent openings in the heterogeneous hole units 120. The four rows of heterogeneous hole units 120 are located on the first vertical plate 111, the first inclined plate 112, the second vertical plate 113, and the second inclined plate 114, respectively. This embodiment uses circular and elliptical holes as examples; in other embodiments, holes of other shapes or areas can also be used. This increases the turbulence of the two adjacent openings in each heterogeneous hole unit 120 after the incoming air enters, reducing the incoming wind speed. When the front and rear double-layer wind barriers are spaced apart, an air duct is formed. This duct allows airflow to flow between the two layers, increasing the turbulence of some strong winds after they pass through the heterogeneous hole units 120 through the outer wind barrier 100, thereby reducing the intensity of the incoming strong winds.
[0032] It should be noted that, in this embodiment, the first inclined plate 112, the second vertical plate 113 and the second inclined plate 114 have smaller areas, so the corresponding opening positions and sizes in each corrugated steel plate unit 110 are the same, and the area of the first vertical plate 111 is relatively large. Therefore, the different hole unit 120 of the first vertical plate 111 adopts a top-down gradual transition form. In the process of resisting wind and sand, due to the different weights of the particles themselves, the size of the particles is distributed in a linear relationship in the vertical direction, and the particle size increases from top to bottom, which blocks the wind and sand in a targeted manner, thereby ensuring a certain opening rate (the opening cross-sectional area of the entire plate) while being able to more effectively block the sand outside the opening.
[0033] like Figure 5-7 As shown, the inner wind barrier 200 in this embodiment is exemplified by a venetian blind. The blades of the venetian blind are arranged at an angle, with the lower ends of the blades positioned closer to the side of the outer wind barrier 100. The inner wind barrier 200 can also be connected to the columns 300 via angle brackets. The use of multiple angled blades can alter the overall crosswind flow direction, raising the wind speed above the critical height for driving safety, ensuring driving safety and better adapting to various windy and sandy environments. This effectively reduces the impact of wind flow on the safety of high-speed trains. The bottoms of the columns 300 can be fixed to the bridge deck, and the venetian blinds are secured between the columns 300 using angle brackets. The angle brackets are easy to install and effectively prevent the venetian blinds from shaking or loosening during use, ensuring their overall stability after installation. They can also evenly distribute the wind force exerted on the venetian blinds across the columns 300, reducing the risk of connection failure due to localized excessive force.
[0034] To ensure economical and safe wind barriers, the exterior wind barrier 100 primarily utilizes lightweight weathering corrugated steel plates. Made from high-strength weathering steel, these plates offer lightweight, high load-bearing capacity, strong impact resistance, and reduced steel consumption. Galvanizing is unnecessary, reducing both coating and maintenance costs and facilitating rapid and convenient construction. This structural material offers high strength and toughness, meeting the requirements of a variety of complex structures and adapting to increasingly complex natural environments.
[0035] See also Figure 8The double-layer wind barrier provided in this embodiment is used on a bridge 600. Two double-layer wind barriers are installed on either side of the bridge deck 600. When wind and sand pass through the first layer of wind barriers, the remaining wind force is insufficient to carry the remaining sand particles. The sand particles settle into a sand collection box 400 at the bottom of the two-layer wind barriers. The sand collection box 400 is connected to a sand discharge pipe 500. The sand discharge pipe 500 runs along the entire length of the bridge span, turns at the pier, and extends vertically to the bottom of the pier. The sand collection box 400 is bolted between four columns 300 and collects sand deposited between the wind barriers for disposal. The sand can be regularly cleaned from the ground using the sand discharge pipe 500 and large vacuum equipment. It can be understood that the outer wind barriers 100 of this utility model are designed to increase the turbulence of the incoming flow, reduce wind speed, and simultaneously provide sand fixation. The inner wind barrier 200 primarily serves to increase the speed and direction of the incoming flow. The resulting double-layer wind barrier has excellent wind-proof and sand-fixing effects.
[0036] In addition to the above embodiments, the present invention may also have other implementation methods; any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.
Claims
1. A double-layer wind barrier for high-speed railway bridges in a sandstorm environment, characterized in that: The invention relates to an outer wind barrier (100) and an inner wind barrier (200) with a gap therebetween. The outer wind barrier (100) is composed of a plurality of corrugated steel plate units (110) sequentially connected in a first direction, and the corrugated steel plate units (110) are provided with at least one row of different hole units (120) in a second direction, the second direction being perpendicular to the first direction. The different hole units (120) include at least two openings of different shapes and / or areas, so that the turbulence of the airflow is increased after the airflow passes through adjacent openings of the different hole units (120). The inner wind barrier (200) includes a louver.
2. The double-layer wind barrier according to claim 1, characterized in that: The corrugated steel plate unit (110) comprises a first vertical plate (111), a first inclined plate (112), a second vertical plate (113), and a second inclined plate (114) connected in sequence to form a corrugated structure.
3. The double-layer wind barrier according to claim 2, characterized in that: Different hole units (120) are provided on the first vertical plate (111), the first inclined plate (112), the second vertical plate (113), and the second inclined plate (114).
4. The double-layer wind barrier according to claim 1, characterized in that: The opening areas of the corrugated steel plate units (110) on the external wind barrier (100) decrease gradually from top to bottom.
5. The double-layer wind barrier according to claim 1, characterized in that: The blades of the shutter are arranged obliquely, and the lower ends of the blades are close to one side of the external wind barrier (100).
6. The double-layer wind barrier according to claim 1, characterized in that: A sand collecting box (400) having a sand discharge pipe (500) is further provided below the outer wind barrier (100) and the inner wind barrier (200).
7. The double-layer wind barrier according to claim 1, characterized in that: The openings include circular holes and elliptical holes.
8. The double-layer wind barrier according to claim 1, characterized in that: The material of the external wind barrier (100) is a weathering steel plate.
9. The double-layer wind barrier according to claim 1, characterized in that: The outer wind barrier (100) and the inner wind barrier (200) are parallel and respectively connected to the columns (300), and the columns (300) are connected via fixing members.
10. The double-layer wind barrier according to claim 9, characterized in that: The inner wind barrier (200) is connected to the column (300) via an angle bracket.