Urban bridge zoned gap self-explanatory intersection safety device design system

Abstract

The application relates to a kind of urban bridge middle strip gap self-explaining intersection safety device design systems, including the longitudinal gap self-explaining intersection safety device of setting in the middle strip of elevated bridge upper layer and the indicating guide device of setting in the lower layer of elevated bridge, the longitudinal gap self-explaining intersection safety device includes anti-falling net and self-explaining anti-dazzle device, the anti-falling net and the self-explaining anti-dazzle device are fixedly arranged on the crossbeam of elevated bridge, the indicating guide device is arranged on the road surface under bridge, the self-explaining anti-dazzle device includes louvered shutter, longitudinal rib and transverse beam;The louvered shutter is fixedly arranged on the crossbeam of elevated bridge, the transverse beam is anchored in the side of crossbeam of elevated bridge, and the longitudinal rib is anchored on the transverse beam.The road surface projection point, line, circle of middle strip gap sunlight in the application become intermittent, dispersed, random, reduce the driving interference to road surface driver, and strengthen road surface indicating guide device, meet the psychological expectation of driver, and then realize easy, safe driving.

Description

Technical Field

[0001] The present invention relates to the technical field of road traffic safety, and more particularly to a self-explanatory traffic safety facility design system for a median gap in an urban bridge. Background Art

[0002] In recent years, my country has vigorously developed green transportation, aiming to create a resource-efficient and environmentally friendly transportation system. Reducing energy consumption and introducing more natural light to replace lighting has long been a key research topic. However, addressing shadows is particularly crucial when introducing natural light. When a vehicle travels beneath an overpass or other obstructing structures, the intensity and reflection of light received by the driver and the autonomous driving system's sensors may change, making it difficult for the driver and the autonomous driving system to recognize key elements such as lane markings and traffic signs. This not only affects the decision-making accuracy of the autonomous driving system but also negatively impacts the driver's vision and judgment, increasing the risk of traffic accidents. For example, shadows cast by an overpass can cause the color and shape of lane markings to mismatch with actual conditions, leading the driver and the autonomous driving system to misjudge lane positions. This misjudgment can cause the vehicle to stray from its lane and even lead to a collision with other vehicles or obstacles. Furthermore, shadows can make it difficult for the system to accurately recognize traffic signs and traffic lights, affecting the vehicle's driving path and speed control.

[0003] In addition, direct sunlight passing through gaps can also have a negative impact on traffic safety. Sudden sunlight hitting the driver's eyes can cause temporary blindness or impaired vision. Glare can prevent the driver from seeing the road, vehicles, pedestrians, or traffic lights ahead, increasing the risk of accidents. Direct exposure to strong light can cause eye fatigue, affecting the driver's concentration and reaction speed, and increasing the probability of operational errors. Strong light can change the driver's perception of the surrounding environment, affecting speed judgment, making the driver more likely to underestimate or overestimate the speed of themselves and other vehicles. In strong light, drivers may need longer to adapt to the light changes, which can lead to longer reaction times and reduced ability to respond to emergencies.

[0004] When a vehicle travels under obstructions such as overpasses or other buildings, the light directly hitting the road is partially or completely blocked, significantly reducing the ambient light intensity inside the vehicle. This not only affects the driver's visual comfort, but more importantly, the sudden change in light intensity can adversely affect key visual elements on the road. Currently, when vehicles travel under overpasses or other obstructions, the intensity and reflection of light received by drivers or sensors may vary, making it difficult for drivers and autonomous driving systems to identify key elements such as lane markings and traffic signs. Existing overpass designs generally use direct shielding such as nets and shields, or no shielding at all when the gaps are narrow. Direct shielding prevents the use of natural light, resulting in high energy consumption. Designs without any shielding can negatively impact driving due to direct sunlight glare, potentially causing serious accidents if people or vehicles fall. There is no transition between light intensity levels in shadowed and bright areas under overpasses, resulting in glare that can interfere with vision. This can affect drivers' vision, causing visual fatigue and discomfort, reduced obstacle recognition, delayed driving reactions, and potentially leading to a range of safety issues. Road signs and markings are also difficult to identify. Drivers and autonomous vehicles rely on vision to identify road signs and markings for safe and smooth driving. However, due to the shadows cast by the upper bridge deck, the road markings below are difficult to clearly identify and understand. Traditional transportation facilities are often unable to cope with the impact of direct sunlight on road traffic. Direct sunlight can easily cause strong reflections under the bridge, even creating long, noticeable vertical streaks. These lighting phenomena not only cause visual discomfort to drivers, but can also seriously affect lane recognition of autonomous vehicles, increasing the risk of traffic accidents. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a self-explanatory traffic safety facility design system for median gaps on urban bridges, which can prevent drivers and automatic driving systems from having difficulties in identifying key elements such as lane lines and traffic signs, reduce the negative impact on the driver's vision and judgment, and reduce the impact of this situation on the decision-making accuracy of drivers and automatic driving systems, thereby enhancing road traffic safety.

[0006] The technical solution adopted by the present invention to solve its technical problems is: constructing a self-explanatory traffic safety facility design system for the gap in the center strip of an urban bridge, including a self-explanatory traffic safety device for the longitudinal gap arranged in the center strip of the upper level of the viaduct and an indication and guidance device arranged in the lower level of the viaduct, the self-explanatory traffic safety device for the longitudinal gap includes an anti-fall net and a self-explanatory anti-glare device, the anti-fall net and the self-explanatory anti-glare device are both fixedly arranged on the crossbeam of the viaduct, and the indication and guidance device is arranged on the road surface under the bridge.

[0007] According to the above scheme, the gap range of the anti-fall net structure is 5~10cm. While preventing people or objects from falling, the road surface projection of sunlight with gaps in the middle strip is changed from direct light to a large light spot.

[0008] According to the above scheme, the self-explanatory anti-glare device includes a louver-type shielding sheet, a light guiding pipe, a longitudinal rib and a transverse beam; the louver-type shielding sheet is fixedly arranged on the viaduct crossbeam, the transverse beam is anchored on the side of the viaduct crossbeam, the longitudinal rib is anchored on the transverse beam, the louver-type shielding sheet is provided with openings at intervals, the positions of the openings are asymmetrical in the horizontal direction and discontinuous in the longitudinal direction, and the openings are fixedly provided with a light guiding pipe.

[0009] According to the above scheme, the small rectangles formed by the intersection of the longitudinal ribs and the transverse beams, p is the transverse beam spacing and the length is 50-150 cm, q is the longitudinal rib spacing and the width is 50-100 cm, there are i small rectangles in the longitudinal direction and j small rectangles in the transverse direction. The horizontal and vertical staggered design makes the device more solid and reliable, and the louver-type shielding sheet is in the small rectangle;

[0010] The width L1 of the longitudinal ribs is 4-8 cm, the height H1 is 4-8 cm, the width L2 of the transverse beams is 4-8 cm, the height H2 is 4-8 cm;

[0011] The longitudinal gap self-explanatory traffic safety device length ,width , w is a constant.

[0012] According to the above scheme, a spatial rectangular coordinate system is established with the intersection of the two elevated roads as the origin, the longitudinal direction as the X axis, the transverse direction as the Y axis, and the vertical direction as the Z axis. The different design contents of the self-explanatory anti-glare device are represented by coordinates (x, y, z); the inclination direction of the louver-type shielding sheet is the direction of lane travel. When assuming that the range of light intensity is L min to L max The angle range of the shutter of the shutter type shielding sheet is A min to A max , the angle A of the blinds is calculated according to the light intensity L using the following formula:

[0013]

[0014] Among them, L is the current light intensity, A min and A max are the minimum and maximum values ​​of the shutter angle, L min and L maxThe value of is determined by the local natural light intensity. In order to make the linear sunlight projection irregular in width, when setting a louver-type shielding piece with a length of 5p~10p in the longitudinal direction, adjust the louver-type shielding piece angle, and randomly add a certain angle tilt d to the louver angle A in different sections, d is 0°~15°, and the final angle of each louver-type shielding piece is Through the semi-covering design and intelligent control of the louver-type shielding sheet, the road surface projection lines with gaps in the middle of the sunlight are changed into discontinuous, scattered and random.

[0015] According to the above solution, the openings include longitudinal openings and transverse openings;

[0016] The longitudinal openings are arranged in the following manner: in the small rectangular area, three opening positions are arranged between two adjacent transverse beams, namely, front, middle, and rear. One of the three opening positions is randomly selected as a longitudinal opening, and the circular diameter R of the opening is 0.5m to 1m. The opening positions and the circular diameter of the openings are both random, so that the spacing between different longitudinal openings is randomly discontinuous.

[0017] The transverse opening is set in the following way: the elevated roads on both sides of the median strip are not parallel in their forward direction, and the intersection slope of the two lanes or their extension lines is k, the gap base width b is 0~2m, the actual width of the gap is y, and the length from the non-parallel starting point is x, then The first opening is set when the y value reaches 0.5m, the second opening is set when the y value reaches 1m, and the third opening is set when the y value reaches 1.5m. The circular diameter R of the opening is 0.5m~1m, and the position and diameter of the opening are both random.

[0018] According to the above scheme, the light guide pipe is set in the following way: the roads on both sides of the elevated median strip are not parallel to each other in the forward direction, and the intersection slope of the two lanes or their extension lines is k, the gap base width b is 0~2m, the actual width of the gap is y, and the length from the non-parallel starting point is x, then When the y value reaches 0.5m, the first opening is set, and a deflected light guiding pipe is set close to the driving lane side, that is, the straight lane is guided first; when the y value reaches 1m, the second opening is set on the left side, and a deflected light guiding pipe is set on the opposite side, that is, a pipe is set in the opposite direction to the first one; when the y value reaches 1.5m, the third opening 13 is set between the two openings, and a vertical light guiding pipe is set, and the length of the light guiding pipe is random.

[0019] According to the above scheme, the light guiding pipe includes an upper vertical section and a lower side deviation section, the length of the upper vertical section is 0.5 m, the guiding angle of the lower side deviation section includes 0°, 15°, 30° and 45°; wherein, 0° light guiding pipe is used when the vertical light guiding pipe is arranged in the middle, 15° light guiding pipe, 30° light guiding pipe and 45° light guiding pipe are used when the side deviation light guiding pipe is arranged on the left and right sides, so that the road surface projection circle of the sunbeam with a gap in the middle is not on the same straight line.

[0020] According to the above scheme, the indication guiding device includes an arched LED lamp strip, a column, a roadside guardrail, a linear profile marker, a flexible traffic column, a fluorescent marking tape, a protruding road sign, a road surface guide arrow and a viaduct beam, the road traffic is in line with the driver's psychological expectation by strengthening the road surface indication guiding device, and thus easy and safe driving is realized.

[0021] The column is arranged on the roadside of the viaduct, the arched LED lamp strip is arranged on the column, the roadside guardrail, the linear profile marker and the flexible traffic column are uniformly arranged on the roadside of the viaduct, and the fluorescent marking tape, the protruding road sign and the road surface guide arrow are uniformly arranged on the road surface under the viaduct.

[0022] According to the above scheme, the fluorescent film marking tape is arranged on the road surface under the viaduct, yellow-green fluorescent marking tapes with a length of 3-6 m and a width of 30-40 cm are arranged at both ends of the dashed line of the lane, and the protruding road signs are arranged on the lane boundary line of the road surface under the viaduct at intervals of 8-10 m, the inner side is yellow and the outer side is white, and the road surface guide arrow is covered with a yellow-green fluorescent film with a width of 5-10 cm.

[0023] According to the above scheme, the column is provided with yellow-black reverse reflection facade markers, the beam is provided with an arched LED lamp strip, the roadside guardrail is provided with linear profile markers with a length of 85-170 cm, and the outer side of the road boundary line is provided with a flexible traffic column.

[0024] The city bridge middle strip gap self-explaining intersection safety facility design system has the following beneficial effects:

[0025] 1、The present application introduces an advanced line-of-sight induction facility setting method, such as marking tape covered with fluorescent film, dense setting of protruding road signs, setting of linear induction markers on roadside guardrails, setting of arched high-brightness LED lamp strips on the lower layer, and setting of warning columns on the roadside, which not only improves the visibility of lane lines and traffic signs in insufficient light, but also reduces visual fatigue and misjudgment risk of drivers caused by insufficient light by dynamically adjusting the balance of indoor and outdoor light, and enhances contrast for light adaptability of automatic driving systems, which is convenient for visual recognition of automatic driving systems.

[0026] 2. The longitudinal gap self-explanatory traffic safety facility designed by the present invention is intended to enhance the safety of viaducts and other similar structures. An anti-fall net is set on the top layer of the facility to prevent workers or pedestrians on the bridge from accidentally falling and ensure their safety. The anti-fall net can also effectively prevent objects on the bridge deck from falling. If these objects fall, they will pose a potential safety threat to vehicles and pedestrians on the lower road. The setting of the anti-fall net can not only play a protective role, but also effectively reduce the accident rate caused by accidentally falling objects. Compared with traditional shielding plates or other isolation devices, the longitudinal gap self-explanatory traffic safety device achieves a better balance between safety and functionality. Although the shielding plates can prevent objects from falling, they are usually fully enclosed structures that will block the transmission of natural light. On the contrary, the well-designed anti-fall net The net allows natural light to penetrate through the gaps in the net surface and illuminate the lower road, thus providing good lighting conditions. This not only helps improve visibility on the lower road and reduce the risk of traffic accidents, but also provides a safer passage environment for pedestrians and drivers. The light transmittance of the anti-fall net prevents the environment below the bridge deck from being too dim, ensuring that drivers can more clearly identify road conditions while driving. At the same time, it also provides a certain degree of lighting support for the lower traffic. While improving the safety performance of the bridge, it also takes into account the effective use of natural light, allowing the bridge deck and the lower road to reach higher standards in terms of functionality and aesthetics. The longitudinal gap self-explanatory traffic safety device provides comprehensive protection for the safety of bridge use and provides new design ideas for the construction and maintenance of modern transportation infrastructure.

[0027] 3. This invention presents an innovative design in the field of traffic management and safety facilities – a self-explanatory traffic safety device with longitudinal median gaps. This design significantly improves safety and comfort in complex traffic environments. The lower layer utilizes unique self-explanatory anti-glare technology. Through cleverly designed irregular gaps, direct sunlight is dispersed into intricate light spots and irregular apertures, effectively reducing the glare effect caused by strong light on the driver's vision. Especially in direct sunlight, the optimized configuration of the anti-glare device achieves intelligent scattering and regulation of light, effectively reducing direct light exposure to the driver's eyes and avoiding the illusion of road lines caused by strong light reflection, thereby significantly improving driving comfort and safety.

[0028] 4. Through scientific and rational design, this invention utilizes a combination of multiple visual warning elements to effectively delineate and identify building boundaries, thereby enhancing safety and warning effectiveness. Yellow and black reflective film is installed at key locations. This film creates a strong visual contrast under illumination, allowing drivers and pedestrians to clearly identify building boundaries from a distance and heighten their awareness. To provide clear warnings at night or in low-visibility conditions, self-luminous light strips are also included. These light strips, through their built-in light sources or energy storage materials, continuously emit bright light in the dark, further enhancing visual recognition. To cope with potential collisions or impacts, resilient traffic bollards with high elasticity and impact resistance are also introduced. These resilient traffic bollards can not only withstand certain external impacts but also have excellent recovery capabilities, ensuring that they maintain their effective warning function over long-term use. The fluorescent film alleviates drivers' adaptation to light and dark conditions, enhancing their ability to identify underbridge facilities and making them more consistent with the laws and characteristics of visual recognition. This ensures that signs and markings maintain good visibility in various environmental conditions and provides accurate and reliable road information for autonomous vehicles. Through the combination of the above multiple measures, the conspicuousness and durability of building limit signs have been greatly improved, effectively reducing potential safety hazards and providing reliable protection for traffic safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0030] Figure 1 Schematic diagram of the multi-layer structure of the longitudinal gap self-explanatory traffic safety device of the present invention;

[0031] Figure 2 A top view of the longitudinal gap self-explanatory traffic safety device of the present invention;

[0032] Figure 3 A side view of the longitudinal gap self-explanatory traffic safety device of the present invention;

[0033] Figure 4 Schematic diagram of the self-explanatory anti-glare device of the present invention;

[0034] Figure 5 A schematic diagram showing the design of the position of the transverse opening of the self-explanatory anti-glare device of the present invention;

[0035] Figure 6 A schematic diagram of the arrangement of the light guide pipes of the present invention;

[0036] Figure 7 Schematic diagram of various guiding angles of the light guide tube of the present invention;

[0037] Figure 8 A longitudinal schematic diagram of the arrangement of the light guide pipes of the present invention;

[0038] Figure 9 A longitudinal schematic diagram of the lower level of the elevated structure of the present invention;

[0039] In the figure: 1. Self-explanatory anti-glare device, 2. Louver-type shielding sheet, 3. Anti-fall net, 11. Longitudinal rib, 12. Transverse beam, 13. Opening, 14. Light guide pipe, 21. Arched LED light strip, 22. Vertical column, 23. Roadside guardrail, 24. Linear contour mark, 25. Elastic traffic column, 26. Fluorescent marking tape, 27. Raised road sign, 28. Pavement guide arrow, 29. Pavement under the bridge, 30. Overpass crossbeam, 140. 0° light guide pipe, 141. 15° light guide pipe, 142. 30° light guide pipe, 143. 45° light guide pipe. DETAILED DESCRIPTION

[0040] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0041] like Figure 1-5 As shown, the self-explanatory traffic safety facility design system for the median gap of an urban bridge of the present invention includes a longitudinal gap self-explanatory traffic safety device set in the median gap of the upper level of the viaduct and an indication and guidance device set in the lower level of the viaduct. The longitudinal gap self-explanatory traffic safety device includes an anti-falling net 3 and a self-explanatory anti-glare device 1. The anti-falling net 3 and the self-explanatory anti-glare device 1 are both fixedly set on the viaduct crossbeam 30, and the indication and guidance device is set on the road surface under the bridge. The self-explanatory anti-glare device 1 includes a louver-type shielding piece 2, a longitudinal rib 11 and a transverse beam 12; the louver-type shielding piece 2 is fixedly set on the viaduct crossbeam 30, the transverse beam 12 is anchored on the side of the viaduct crossbeam 30, and the longitudinal rib 11 is anchored on the transverse beam 12. The louver-type shielding piece 2 is provided with openings 13 at intervals. The positions of the openings are asymmetrical in the horizontal direction and discontinuous in the vertical direction. A light guiding pipe 14 is fixedly set on the opening 13.

[0042] like Figure 1 As shown, the self-explanatory traffic safety device for the longitudinal gap in the median of an urban expressway viaduct is designed with a multi-layer structure: the upper layer is a net 3 with a structural gap of 5-10 cm, and the lower layer is a self-explanatory anti-glare device 1. While preventing people and objects from falling, it also transforms the road surface projection of sunlight through the median gap from direct light to a large spot. The self-explanatory anti-glare device 1 consists of a first part consisting of longitudinal ribs 11, transverse beams 12, and a louver-like shielding sheet 2. The second part consists of an opening 13 and a light-guiding duct 14.

[0043] like Figure 2As shown, the longitudinal gap self-explanatory traffic safety device is designed in a top view. The longitudinal gap self-explanatory traffic safety device in the median of the urban expressway viaduct is designed so that the length of the small rectangle produced by the intersection of the longitudinal rib and the transverse beam is p (50~150cm), p is also the transverse beam spacing, and the width is q (50~100cm), q is also the longitudinal rib spacing. The horizontal and vertical staggered design makes this device more solid and reliable. There are i small rectangles in the longitudinal direction and j small rectangles in the transverse direction, and a louver-type shielding piece 2 is set in the small rectangle. The width L1 of the longitudinal rib rod is 4~8cm, and the height H1 ranges from 4~8cm. The width L2 of the transverse beam rod is 4~8cm, and the height H2 ranges from 4~8cm. The length of the longitudinal gap self-explanatory traffic safety facility in the median is as follows. ,width , w is a constant. The transverse beams are directly anchored to the sides of the existing bridge beams, and the longitudinal ribs are anchored to the transverse beams.

[0044] like Figure 3 As shown, a side view of a longitudinally slotted self-explanatory traffic safety device shows the area and shape of the anti-fall net 3 covering the underlying self-explanatory anti-glare device 1, with a height of 1.2-2 mm. The self-explanatory anti-glare device 1 comprises a first portion consisting of longitudinal ribs 11, transverse beams 12, and a louver-like shielding sheet 2, and a second portion consisting of an opening 13 and a light guide duct 14. The height is H+h, where h is the height of the light guide duct 14 and H is the maximum value of the height of the longitudinal ribs 11 and transverse beams 12, which can be used depending on the situation.

[0045] like Figure 4 As shown, the self-explanatory anti-glare device takes the intersection of the two elevated roads as the origin, the longitudinal direction as the X-axis, the transverse direction as the Y-axis, and the vertical direction as the Z-axis to establish a spatial rectangular coordinate system. The different design contents of the facility can be represented by coordinates (x, y, z). The blind-type shielding plate 2 adopts an intelligent control system to intelligently adjust the inclination angle of its shielding plate, and senses the external light intensity through the sensor set on the topmost center strip. When the light intensity is large, the inclination angle of the shielding plate is small, and when the light intensity is small, the inclination angle of the shielding plate is large. The inclination direction of the shielding plate is the direction of the lane to prevent sunlight from directly hitting the driver's eyes. Assuming that the range of light intensity is L min to L max , and the angle range of the blinds is A min to A max , then the angle A of the blinds can be calculated according to the light intensity L using the following formula:

[0046]

[0047] Among them, L is the current light intensity, A min and A max are the minimum and maximum values ​​of the shutter angle, L min and L maxThe value of is determined by the local natural light intensity. For example, assuming the light intensity range is 0~10000 lux, and the blind angle range is 0°~60°, so that the natural light intensity received by the sensor is 4000 lux, then the blind angle should be adjusted to 24°. In order to make the linear sunlight projection irregular in width, when each section of the blind shield is set with a length of 5p~10p in the longitudinal direction, adjust the blind shield angle, and randomly add a certain angle tilt d to the blind angle A in different sections, d is 0°~15°, and the final angle of each blind shield is Through the semi-covering design and intelligent control of the louver-type shielding sheet, the road surface projection lines with gaps in the middle of the sunlight are changed into discontinuous, scattered and random.

[0048] like Figure 5 As shown, the schematic diagram of the design of the transverse opening position of the self-explanatory anti-glare device, the design of the opening 13 of the self-explanatory anti-glare device, in the longitudinal opening setting, each small rectangular area, that is, between two adjacent transverse beams 12, is provided with three opening positions at the front, middle and rear. One of the three opening positions is randomly selected as the longitudinal opening, and the circular diameter R of the opening is 0.5m~1m. In the transverse opening setting, the roads on both sides of the elevated median strip are not parallel to the forward direction. Let the intersection slope of the two lanes or their extensions be k, the gap base width b be 0~2m, the actual width of the gap be y, and the length from the non-parallel starting point be x, then there is , set the first opening when the y value reaches 0.5m, set the second opening when the y value reaches 1m, set the third opening when the y value reaches 1.5m, and the circular diameter R of the opening is 0.5m~1m, so that the longitudinal spacing between different openings is randomly discontinuous, and the opening position and the circular diameter of the opening have a certain degree of randomness. Because the spatial coordinate system is established, the position of the center of the opening circle can also be expressed by the plane coordinates (x, y) and each circular opening 13 can also be expressed by a function. For example, assuming that a circular hole with a radius of 0.5m is opened in front of the first area, the opening formula is .

[0049] like Figure 6 As shown, the arrangement of the light guide pipe 14 is self-explanatory. The road on both sides of the elevated median strip is not parallel in the forward direction. Let the intersection slope of the two lanes or their extensions be k, the gap base width b be 0~2m, the actual width of the gap be y, and the length from the non-parallel starting point be x, then When the y-value reaches 0.5m, the first opening 13 is set, along with a directional light guide duct 14 near the driving lane, giving priority to guiding the straight lane. When the y-value reaches 1m, a second opening 13 is set on the left side, along with a directional light guide duct 14 on the opposite side, oriented in the opposite direction from the first. When the y-value reaches 1.5m, a third opening 13 is set between the two openings, along with a vertical light guide duct 14. The length of the light guide duct 14 is random. For example, when the roads 26 on both sides of the central strip are parallel to the forward direction, the gap base width b is between 0m and 2m. Three openings 13 are set on the left, center, and right sides, with left-deflected, right-deflected, and vertical light guide ducts 14, respectively.

[0050] like Figure 7 As shown, a schematic diagram of various guiding angles of the light guiding duct is provided, which explains the design of various guiding angles of the light guiding duct for the anti-glare facility. The light guiding duct consists of two parts, the first part is the upper vertical section with a length of 0.5m, and the second part is the lower lateral section. The guiding angles are designed to be 0°, 15°, 30°, and 45°. Among them, the 0° light guiding duct 140 is used when the vertical light guiding duct is arranged in the middle, and the 15° light guiding duct 141, the 30° light guiding duct 142, and the 45° light guiding duct 143 are used when the lateral light guiding ducts are arranged on the left and right sides, so that the projection circles of the road surface with gaps in the middle are not on the same straight line.

[0051] like Figure 8 The diagram below shows the longitudinal arrangement of the light guiding conduits 14, explaining how the anti-glare light guiding conduits 14 are positioned at various angles within the openings 13. When the side panels' light guiding conduits 14 are arranged longitudinally, adjacent light guiding conduits 14 are positioned at different angles, and there is no pattern in the arrangement.

[0052] like Figure 9 As shown in the longitudinal schematic diagram of the elevated lower level, the underpass road surface 29 is equipped with fluorescent film markings. Yellow-green fluorescent marking strips 26, 30-40 cm long and 10-20 cm wide, are placed at both ends of lane lines with a length of 3-6 meters. Raised road signs 27, yellow on the inside and white on the outside, are installed at intervals of 8-10 meters along the lane edges of the underpass road surface 29. The edges of road directional arrows 28 are covered with a 5-10 cm wide yellow-green fluorescent film. Yellow and black retroreflective vertical markings are installed on the underpass columns 22. Arched LED light strips 21 are installed on the overpass crossbeams 30. Linear delineators 24, 85-170 cm long, are installed on the roadside guardrails 23. Flexible traffic bollards 25 are installed on the outer sides of the road. By strengthening the road sign and guidance system, road traffic is in line with drivers' expectations, ensuring easy and safe driving.

[0053] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and these all belong to the protection of the present application.

Claims

1. A self-explanatory traffic safety facility design system for median gaps in urban bridges, characterized by: It includes a longitudinal gap self-explanatory traffic safety device set in the middle strip of the upper level of the viaduct and an indication and guidance device set in the lower level of the viaduct, the longitudinal gap self-explanatory traffic safety device includes an anti-falling net and a self-explanatory anti-glare device, the anti-falling net and the self-explanatory anti-glare device are both fixedly set on the crossbeam of the viaduct, and the indication and guidance device is set on the road surface under the bridge; The self-explanatory anti-glare device includes a louver-type shielding sheet, a light guiding pipe, longitudinal ribs and a transverse beam; the louver-type shielding sheet is fixedly set on the viaduct crossbeam, the transverse beam is anchored on the side of the viaduct crossbeam, the longitudinal ribs are anchored on the transverse beam, the louver-type shielding sheet is provided with openings at intervals, and the openings are fixedly provided with light guiding pipes; sunlight is prevented from glare by the inclined louver-type shielding sheet, and the light guiding pipe changes the projection of sunlight on the road surface with a gap in the middle zone from direct light to a large light spot, avoiding direct sunlight at the gap.

2. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 1 is characterized in that: The small rectangles formed by the intersection of the longitudinal ribs and the transverse beams, p is the transverse beam spacing and the length is 50-150 cm, q is the longitudinal rib spacing and the width is 50-100 cm, there are i small rectangles in the longitudinal direction and j small rectangles in the transverse direction, and the louver-type shielding sheet is in the small rectangle; The width L1 of the longitudinal ribs is 4-8 cm, the height H1 is 4-8 cm, the width L2 of the transverse beams is 4-8 cm, the height H2 is 4-8 cm; The longitudinal gap self-explanatory traffic safety device length ,width , w is a constant.

3. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 2 is characterized in that: The intersection of the two elevated roads is used as the origin, the longitudinal direction is the X axis, the transverse direction is the Y axis, and the vertical direction is the Z axis to establish a spatial rectangular coordinate system. The self-explanatory anti-glare device is represented by the coordinates (x, y, z); the inclination direction of the louver-type shielding sheet is the driving direction of the lane. When assuming that the range of light intensity is L min to L max The angle range of the shutter of the shutter type shielding sheet is A min to A max , the angle A of the blinds is calculated according to the light intensity L using the following formula: Among them, L is the current light intensity, A min and A max are the minimum and maximum values ​​of the shutter angle, L min and L max The value of is determined by the local natural light intensity.

4. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 3 is characterized in that: The openings include longitudinal openings and transverse openings; The longitudinal openings are arranged in the following manner: in the small rectangular area, three opening positions are arranged between two adjacent transverse beams, namely, front, middle, and rear positions, and one of the three opening positions is randomly selected as a longitudinal opening, with a circular opening diameter R of 0.5 m to 1 m; The transverse opening is set in the following way: the elevated roads on both sides of the median strip are not parallel in their forward direction, and the intersection slope of the two lanes or their extension lines is k, the gap base width b is 0~2m, the actual width of the gap is y, and the length from the non-parallel starting point is x, then , set the first opening when the y value reaches 0.5m, set the second opening when the y value reaches 1m, set the third opening when the y value reaches 1.5m, and the circular diameter R of the opening is 0.5m~1m.

5. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 1 is characterized in that: The light guide pipe is set up in the following way: the roads on both sides of the elevated median strip are not parallel to each other in their forward direction, and the intersection slope of the two lanes or their extension lines is k, the gap base width b is 0-2m, the actual width of the gap is y, and the length from the non-parallel starting point is x, then When the y value reaches 0.5m, the first opening is set, and a deflected light guide pipe is set close to the driving lane side, that is, the straight lane is guided first; when the y value reaches 1m, the second opening is set on the left side, and a deflected light guide pipe is set on the opposite side, that is, a pipe is set in the opposite direction to the first one; when the y value reaches 1.5m, the third opening is set between the two openings, and a vertical light guide pipe is set.

6. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 1 is characterized in that: The light guiding pipe includes an upper vertical section and a lower lateral section, the upper vertical section is 0.5m long, and the guiding angles of the lower lateral section include 0°, 15°, 30°, and 45°; among them, the 0° light guiding pipe is used when the vertical light guiding pipe is set in the middle, and the 15° light guiding pipe, 30° light guiding pipe, and 45° light guiding pipe are used when the lateral light guiding pipes are set on the left and right sides.

7. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 1 is characterized in that: The indicating and guiding device includes an arched LED light strip, a column, a roadside guardrail, a linear delineator, an elastic traffic column, a fluorescent marking strip, a raised road sign, a road guide arrow and an elevated bridge beam; The columns are arranged on the roadside of the viaduct, the arched LED light strips are mounted on the columns, the roadside guardrails, linear contour markers, and elastic traffic columns are all arranged in multiple and evenly distributed on the roadside of the viaduct, and the fluorescent marking strips, raised road signs, and road guide arrows are all arranged in multiple and evenly distributed on the road surface under the viaduct.

8. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 7 is characterized in that: The road surface under the bridge is equipped with fluorescent film marking strips, with yellow-green fluorescent marking strips 30-40 cm long and 10-20 cm wide at both ends of the lane line with a length of 3-6 m. Raised road signs are set at intervals of 8-10 m on the lane edge of the road surface under the bridge, with yellow on the inside and white on the outside. A circle of yellow-green fluorescent film with a width of 5-10 cm is covered on the edge of the road guide arrow.

9. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 8 is characterized in that: The columns are provided with yellow and black retro-reflective facade markings; the crossbeams are provided with arched LED light strips; linear contour markers with a length of 85 to 170 cm are laid out on the roadside guardrails; and elastic traffic columns are provided on the outside of the road sideline.

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