Self-interpretation traffic safety facility design system for sub-zone gap in urban bridge

Abstract

The invention relates to an urban bridge mid-division zone gap self-interpretation traffic safety facility design system, which comprises a longitudinal gap self-interpretation traffic safety device arranged in a mid-division zone on the upper layer of a viaduct and an indication guide device arranged on the lower layer of the viaduct, and is characterized in that the longitudinal gap self-interpretation traffic safety device comprises an anti-falling net and a self-interpretation anti-dazzle device; the anti-falling net and the self-interpretation anti-dazzle device are both fixedly arranged on a cross beam of the viaduct, the indicating and guiding device is arranged on the road surface under the viaduct, and the self-interpretation anti-dazzle device comprises shutter type shielding pieces, longitudinal ribs and transverse beams; the shutter type shielding sheet is fixedly arranged on a cross beam of the viaduct, the transverse beam is anchored on the side edge of the cross beam of the viaduct, and the longitudinal rib is anchored on the transverse beam. According to the invention, road surface projection points, lines and circles of sunlight with gaps in the middle are changed to be discontinuous, scattered and random, the driving interference to road surface drivers is reduced, a road surface indicating and guiding device is strengthened, the psychological expectation of the drivers is met, and easy and safe driving is realized.

Description

Technical Field

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

[0002] In recent years, my country has vigorously developed green transportation and built a resource-saving and environmentally friendly transportation system. How to reduce energy consumption and introduce more natural light to replace lighting has always been an important research direction. However, when introducing natural light, it is particularly important to solve the shadow problem. When a vehicle is driving under an overpass or other obstructions, the light intensity and reflection received by the driver and the automatic driving system sensor may change, causing the driver and the automatic driving system to have difficulty in identifying key elements such as lane lines and traffic signs. This situation not only affects the decision-making accuracy of the automatic driving system, but also has a negative impact on the driver's vision and judgment, thereby increasing the risk of traffic accidents. For example, the shadow under the overpass may make the color and shape of the lane line inconsistent with the actual situation, causing the driver and the automatic driving system to misjudge the lane position. This misjudgment may cause the vehicle to deviate from the lane and even cause a collision with other vehicles or obstacles. In addition, shadows may make it difficult for the system to accurately identify traffic signs and signal lights, thereby affecting the vehicle's driving path and speed control.

[0003] In addition, direct sunlight through the gaps can also have a negative impact on traffic safety. Sudden direct sunlight hitting the eyes may cause temporary blindness or visual impairment to the driver, and glare will make it difficult for the driver to see the road, vehicles, pedestrians or traffic lights ahead, increasing the risk of accidents; facing strong light directly will cause eye fatigue, affect the driver's attention and reaction speed, and increase the probability of operating errors; strong light will change the driver's perception of the surrounding environment, affect the judgment of speed, and make the driver more likely to underestimate or overestimate the speed of himself and other vehicles; under strong light, the driver may need longer time to adapt to the light changes, which will lead to longer reaction time and weakened ability to respond to emergencies.

[0004] When a vehicle is traveling under an obstruction such as an overpass or other building, the light directly shining on the road surface will be partially or completely intercepted due to the existence of the obstruction, resulting in a significant decrease in the ambient light intensity inside the vehicle entering such an area. This situation not only affects the driver's visual comfort, but more importantly, the sudden change in light intensity will have an adverse effect on key visual elements on the road. At present, when a vehicle is traveling under an elevated bridge or other obstructions, the intensity and reflection of light received by the driver or sensor may change, making it difficult for the driver and the autonomous driving system to identify key elements such as lane lines and traffic signs. The current design of elevated bridges generally uses anti-fall nets and shielding plates to directly block the road, or does not set up any facilities when the gap is narrow. The direct blocking design cannot utilize natural light and consumes a lot of energy. The design without any facilities will have a negative impact on vehicle driving. If a person or vehicle falls, it will cause a serious accident. There is no transition interval between the intensity of light in the shadow and bright area under the elevated bridge. There is glare, which may interfere with vision. It will affect the driver's vision, cause visual fatigue and discomfort, reduce the ability to identify obstacles, delay driving response, etc., and may also lead to a series of safety problems. Road signs and markings have poor recognizability. Drivers or autonomous vehicles need to identify road signs and markings through vision to ensure safe and smooth driving. However, due to the obstruction of the upper bridge deck, the shadows produced make it difficult to clearly identify and understand the road signs and markings on the lower level. Traditional transportation facilities often have difficulty coping with the impact of direct sunlight on road traffic. Direct sunlight can easily form strong reflections under the bridge, and even produce obvious long vertical stripes. These light phenomena not only cause visual discomfort to drivers, but may also have a serious impact on the 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 the median gap of 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 middle zone of an urban bridge, including a self-explanatory traffic safety device for the longitudinal gap arranged in the middle zone of the upper layer of the viaduct and an indication and guidance device arranged in the lower layer of the viaduct, the self-explanatory traffic safety device for the longitudinal gap 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 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 to 10 cm. While preventing people or objects from falling, the road surface projection of sunlight through the gap in the center zone 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, longitudinal ribs 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 ribs are anchored on the transverse beam, the louver-type shielding sheet is provided with openings at intervals, the positions of the openings are asymmetric laterally and discontinuous longitudinally, and the light guiding pipe is fixedly arranged on the openings.

[0009] According to the above scheme, the small rectangles generated by the intersection of the longitudinal ribs and the transverse beams, p is the transverse beam spacing and the length is 50-150cm, q is the longitudinal rib spacing and the width is 50-100cm, there are i small rectangles in the longitudinal direction and j small rectangles in the transverse direction, and 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 rib bar is 4 to 8 cm, the height H1 is 4 to 8 cm, the width L2 of the transverse beam bar is 4 to 8 cm, and the height H2 is 4 to 8 cm;

[0011] The longitudinal gap self-explanatory traffic safety device length S1 = i×(p+L2)+w, width S2 = i×(q+L1)+w, 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 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:

[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 each section of the blinds is set with a length of 5p to 10p, the angle of the blinds is adjusted, and the blinds angle A is randomly added with a certain angle tilt d in different sections, d is 0° to 15°, and finally the angle A of each section of the blinds is i =A+d. Through the semi-covering design and intelligent regulation of the louver-type shielding sheet, the road projection lines with gaps in the middle of the sun are turned into discontinuous, scattered and random lines.

[0015] According to the above scheme, 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, the front, middle and rear opening positions, and 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 openings are arranged in the following manner: the elevated roads on both sides of the median strip are not parallel to each other in the forward direction, the intersection slope of the two lanes or their extension lines is set to be k, the gap foundation 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 y=kx+b, the first opening is arranged when the y value reaches 0.5m, the second opening is arranged when the y value reaches 1m, and the third opening is arranged when the y value reaches 1.5m, the circular diameter R of the opening is 0.5m-1m, and the opening position and the circular diameter of the opening are both random to a certain extent.

[0018] According to the above scheme, the light guiding conduit is arranged in the following manner: 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 set to be k, the gap basic 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 y=kx+b, and the first opening is set when the y value reaches 0.5m, and a deflected light guiding conduit is set close to the driving lane side, that is, the straight lane is guided preferentially; when the y value is 1m, the second opening is set on the left side, and a deflected light guiding conduit is set on the opposite side, that is, a conduit is set in the opposite direction to the first; when the y value reaches 1.5m, a third opening 13 is set between the two openings, and a vertical light guiding conduit is set, and the length of the light guiding conduit is random.

[0019] According to the above scheme, 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°; wherein, when a vertical light guiding pipe is set in the middle, a 0° light guiding pipe is used, and when lateral light guiding pipes are set on the left and right sides, a 15° light guiding pipe, a 30° light guiding pipe, and a 45° light guiding pipe are used, so that the road surface projection circle of the sunlight with a gap in the middle is not on the same straight line.

[0020] According to the above scheme, the indication and guidance device includes an arched LED light strip, a column, a roadside guardrail, a linear contour mark, an elastic traffic column, a fluorescent marking strip, a raised road sign, a road guide arrow and an elevated bridge beam. By strengthening the road indication and guidance device, the road traffic meets the psychological expectations of the driver, thereby achieving easy and safe driving;

[0021] The columns are arranged on the road side 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 arranged on the road side of the viaduct, and the fluorescent marking strips, raised road signs, and road guide arrows are all arranged in multiple and evenly arranged on the road surface under the viaduct.

[0022] According to the above scheme, a fluorescent film marking strip is set on the road surface under the bridge, and a yellow-green fluorescent marking strip with a length of 30 to 40 cm and a width of 10 to 20 cm is made at both ends of the virtual line of the lane with a length of 3 to 6 m. Raised road signs are set at intervals of 8 to 10 m on the edge line of the lane 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 to 10 cm is covered outside the edge of the road guide arrow.

[0023] According to the above scheme, the columns are provided with yellow and black retro-reflective facade markings; the crossbeams are provided with arched LED light strips; linear contour marks with a length of 85 to 170 cm are arranged on the roadside guardrails; and elastic traffic columns are provided on the outside of the road sideline.

[0024] The self-explanatory traffic safety facility design system for the median gap of a city bridge according to the present invention has the following beneficial effects:

[0025] 1. The present invention introduces advanced sight-guiding facility setting methods, such as covering the markings with fluorescent film, densely setting the raised road signs, setting linear guiding signs on the roadside guardrails, setting arched high-brightness LED light strips on the lower layer, and setting warning columns on the roadside. It can not only improve the visibility of lane lines and traffic signs in low-light conditions, but also reduce the visual fatigue and misjudgment risks of drivers caused by low light by dynamically adjusting the balance of light inside and outside the car. It also enhances the contrast and facilitates the visual recognition of the automatic driving system in view of the light adaptability problem of the automatic driving system.

[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 arranged 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 a fully enclosed structure 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 shine onto the lower road, thus providing good lighting conditions. This not only helps to improve the visibility of the lower road and reduce the risk of traffic accidents, but also provides a safer travel environment for pedestrians and drivers. The light transmittance of the anti-fall net prevents the environment under the bridge deck from being too dim, ensuring that the driver can more clearly identify the road conditions during 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 functionality and aesthetics. The longitudinal gap self-interpreting 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. The present invention proposes an innovative design in the field of traffic management and safety facilities - a longitudinal median gap self-explanatory traffic safety device, which significantly improves safety and comfort in complex traffic environments. The lower layer adopts a 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 interference of the glare effect caused by strong light on the driver's vision. Especially under direct sunlight conditions, through the optimized configuration of anti-glare facilities, intelligent scattering and adjustment of light are achieved, which can not only effectively reduce the direct exposure of light to the driver's eyes, but also avoid the illusion of road lines caused by strong light reflection, thereby significantly improving driving comfort and safety;

[0028] 4. The present invention adopts a scientific and reasonable design and a combination of multiple visual warning elements to effectively outline and mark the building limits, thereby improving safety and warning effects. Yellow and black reflective films are set at key positions. Such reflective films can produce strong visual contrast under light irradiation, so that drivers and pedestrians can clearly identify the building limits at a long distance and increase vigilance. In order to provide clear warnings at night or under low visibility conditions, self-luminous light strips are also configured. These light strips can continuously emit bright light in the dark through built-in light sources or energy storage materials, further enhancing visual recognizability. In order to cope with possible collisions or impacts, elastic traffic columns with high elasticity and impact resistance are also introduced. These elastic traffic columns can not only withstand certain external force impacts, but also have good recovery capabilities, ensuring that they maintain good warning functions in long-term use. By setting up fluorescent films, the driver's adaptation to light and dark is alleviated, and the driver's recognition of the facilities under the bridge is enhanced, making it more in line with the laws and characteristics of visual recognition, ensuring that the signs and markings can maintain good visibility under various environmental conditions, and providing accurate and reliable road information for autonomous driving vehicles. Through the combination of the above multiple measures, the conspicuousness and durability of the building limit signs are 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 of 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 guiding 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] Fig. 9 A longitudinal schematic diagram of the elevated lower layer 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 ribs, 12. Transverse beams, 13. Openings, 14. Light guiding pipes, 21. Arched LED light strips, 22. Upright columns, 23. Roadside guardrails, 24. Linear contour markers, 25. Elastic traffic columns, 26. Fluorescent marking strips, 27. Raised road signs, 28. Pavement guide arrows, 29. Pavement under bridge, 30. Viaduct crossbeam, 140. 0° light guiding pipe, 141. 15° light guiding pipe, 142. 30° light guiding pipe, 143. 45° light guiding 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 the urban bridge of the present invention comprises a longitudinal gap self-explanatory traffic safety device arranged in the median gap of the upper layer of the viaduct and an indication and guidance device arranged in the lower layer of the viaduct, the longitudinal gap self-explanatory traffic safety device comprises 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 arranged on the viaduct cross beam 30, and the indication and guidance device is arranged on the road surface under the bridge. The self-explanatory anti-glare device 1 comprises a louver-type shielding sheet 2, a longitudinal rib 11 and a transverse beam 12; the louver-type shielding sheet 2 is fixedly arranged on the viaduct cross beam 30, the transverse beam 12 is anchored on the side of the viaduct cross beam 30, the longitudinal rib 11 is anchored on the transverse beam 12, the louver-type shielding sheet 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, and a light guiding pipe 14 is fixedly arranged on the opening 13.

[0042] like Figure 1 As shown, the self-explanatory traffic safety device for the longitudinal gap in the median of the urban expressway viaduct is designed with a multi-layer structure: the upper layer is an anti-falling net 3 with a structural gap range of 5 to 10 cm, and the lower layer is a self-explanatory anti-glare facility 1, which prevents people or objects from falling and changes the road surface projection of sunlight in the median gap from direct light to a large light spot. The self-explanatory anti-glare device 1 is composed of a first part consisting of a longitudinal rib 11, a transverse beam 12 and a louver-type shielding sheet 2, and a second part consisting of an opening 13 and a light guide pipe 14.

[0043] like Figure 2As shown, the longitudinal gap self-explanatory traffic safety device top view, the urban expressway viaduct median longitudinal gap self-explanatory traffic safety device design, the longitudinal rib and the transverse beam intersection of the small rectangle length is p (50 ~ 150cm), p is also the transverse beam spacing, the width is q (50 ~ 100cm), q is also the longitudinal rib spacing, the horizontal and vertical staggered design makes the device more solid and reliable. There are i small rectangles in the longitudinal direction and j small rectangles in the transverse direction, and a shutter-type shielding structure 2 is set in the small rectangle. The longitudinal rib rod body width L1 is 4 ~ 8cm, the height H1 ranges from 4 to 8cm, the transverse beam rod body width L2 is 4 ~ 8cm, and the height H2 ranges from 4 to 8cm. The median longitudinal gap self-explanatory traffic safety facility length S1 = i × (p + L2) + w, width S2 = i × (q + L1) + w, 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, the longitudinal gap self-explanatory traffic safety device side view, the anti-falling net 3 area shape covers the lower self-explanatory anti-glare device 1, the height is 1.2 ~ 2mm. The self-explanatory anti-glare device 1 is composed of the longitudinal ribs 11, the transverse beams 12 and the louvered shielding sheet 2 as the first part, and the opening 13 and the light guide pipe 14 as the second part, the height is H + h, h is the height of the light guide pipe 14, H is the maximum value of the height of the longitudinal ribs 11 and the transverse beams 12 according to different situations.

[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 the coordinates (x, y, z). The louver-type shielding film 2 adopts an intelligent control system to intelligently adjust the inclination angle of its shielding film, 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 film is small, and when the light intensity is small, the inclination angle of the shielding film is large. The inclination direction of the shielding film is the direction of the lane to prevent sunlight from directly shining into 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 that the light intensity ranges from 0 to 10,000 lux, and the angle range of the blinds is from 0° to 60°, the natural light intensity received by the sensor is 4,000 lux, then the blinds angle should be adjusted to 24°. In order to make the linear sunlight projection irregular in width, when each section of the blinds shielding piece with a length of 5p to 10p is set longitudinally, the blinds shielding piece angle is adjusted, and the blinds angle A is randomly added with a certain angle tilt d in different sections, d is 0° to 15°, and finally the angle A of each section of the blinds shielding piece is i =A+d. Through the semi-covering design and intelligent regulation of the louver-type shielding sheet, the road projection lines with gaps in the middle of the sun are turned into discontinuous, scattered and random lines.

[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, sets three opening positions in the front, middle and back, and randomly selects one of the three opening positions as a longitudinal opening, and the circular diameter R of the opening is 0.5m~1m. In the transverse opening setting, the elevated roads 26 on both sides of the median strip are not parallel in the forward direction, and the intersection slope of the two lanes or their extension lines is k, the gap foundation 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 y=kx+b, the first opening is set when the y value reaches 0.5m, the second opening is set when the y value is 1m, and the third opening is set when the y value reaches 1.5m, and the circular diameter R of the opening is 0.5m~1m, so that the spacing between different longitudinal 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 center position of the opening can also be expressed by 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 (x-1.5) 2 +(y-1.5) 2 =(0.5) 2 .

[0049] like Figure 6As shown, the setting method of the light guiding conduit 14 is a self-explanatory setting method of the light guiding conduit 14 of the anti-glare device. The roads 26 on both sides of the elevated median strip are not parallel in the forward direction. The intersection slope of the two lanes or their extension lines is set to be k, the basic width b of the gap is 0-2m, the actual width of the gap is y, and the length from the non-parallel starting point is x, then y=kx+b, and the first opening 13 is set when the y value reaches 0.5m, and the deflected light guiding conduit 14 is set close to the driving lane side, that is, the straight lane is guided preferentially; when the y value is 1m, the second opening 13 is set on the left side, and the deflected light guiding conduit 14 on the opposite side is set, that is, a conduit is set in the opposite direction to the first direction; when the y value reaches 1.5m, the third opening 13 is set between the two openings, and a vertical light guiding conduit 14 is set, and the length of the light guiding conduit 14 is random. For example, when the roads 26 on both sides of the middle strip are parallel to the advancing direction, the gap basic width b is 0m to 2m, and three openings 13 are set on the left, middle and right sides, and left, right and vertical light guide pipes 14 are set respectively.

[0050] like Figure 7 As shown, a schematic diagram of various guiding angles of the light guiding pipe is provided, which is a self-explanatory design of various guiding angles of the light guiding pipe of the anti-glare facility. The light guiding pipe 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. There are four guiding angles designed: 0°, 15°, 30°, and 45°. Among them, the 0° light guiding pipe 140 is used when the vertical light guiding pipe is arranged in the middle, and the 15° light guiding pipe 141, the 30° light guiding pipe 142 and the 45° light guiding pipe 143 are used when the lateral light guiding pipes are arranged on the left and right sides, so that the road surface projection circle of the sunlight with a gap in the middle is not on the same straight line.

[0051] like Figure 8 As shown, the longitudinal layout diagram of the light guiding pipe 14 is self-explanatory, and the setting mode of the light guiding pipe 14 of the anti-glare facility at various angles at the position of the opening 13. When the side piece light guiding pipe 14 is arranged longitudinally, two adjacent pipes 14 are set at different guiding angles, and there is no regularity in the setting.

[0052] like Fig. 9As shown in the longitudinal schematic diagram of the elevated lower layer, a fluorescent film marking strip is set on the road surface 29 under the bridge, and a yellow-green fluorescent marking strip 26 with a length of 30 to 40 cm and a width of 10 to 20 cm is made at both ends of the lane line with a length of 3 to 6 m; a raised road sign 27 is set at intervals of 8 to 10 m on the lane edge of the road surface 29 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 to 10 cm is covered on the edge of the road guide arrow 28. Yellow-black retro-reflective vertical surface markings are set on the columns 22 under the bridge; an arched LED light strip 21 is arranged on the crossbeam 30; a linear contour mark 24 with a length of 85 to 170 cm is arranged on the roadside guardrail 23; and an elastic traffic column 25 is set on the outside of the road edge. By strengthening the road indication and guidance device, the road traffic meets the psychological expectations of the driver, thereby achieving easy and safe driving.

[0053] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A self-explanatory traffic safety facility design system for median gaps in urban bridges, characterized in that: It includes a self-explanatory longitudinal gap traffic safety device arranged in a middle zone on the upper level of the viaduct and an indication and guidance device arranged on the lower level of the viaduct. The self-explanatory longitudinal gap traffic safety device 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.

2. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 1 is characterized in that: The self-explanatory anti-glare device includes a louver-type shielding sheet, a light guiding duct, longitudinal ribs 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 ribs are anchored on the transverse beam, the louver-type shielding sheet is provided with openings at intervals, and the light guiding duct is fixedly arranged on the openings.

3. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 2 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 rib bar is 4 to 8 cm, the height H1 is 4 to 8 cm, the width L2 of the transverse beam bar is 4 to 8 cm, and the height H2 is 4 to 8 cm; The longitudinal gap self-explanatory traffic safety device length S1 = i×(p+L2)+w, width S2 = i×(q+L1)+w, w is a constant.

4. The self-explanatory traffic safety facility design system for the median gap of urban bridges according to claim 3 is characterized in that: 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 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 the range of the light intensity is assumed to be 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.

5. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 4 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 opening positions, and 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 transverse openings are arranged in the following manner: the elevated roads on both sides of the median strip are not parallel in the forward direction, the intersection slope of the two lanes or their extension lines is set to be k, the gap foundation width b is 0 to 2 m, the actual width of the gap is y, and the length from the non-parallel starting point is x, then y=kx+b, the first opening is arranged when the y value reaches 0.5 m, the second opening is arranged when the y value reaches 1 m, and the third opening is arranged when the y value reaches 1.5 m, and the circular diameter R of the opening is 0.5 m to 1 m.

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 conduit is arranged in the following manner: the roads on both sides of the elevated median strip are not parallel in the forward direction, the intersection slope of the two lanes or their extension lines is set to be k, the gap basic 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 y=kx+b, and the first opening is arranged when the y value reaches 0.5m, and a deflected light guiding conduit is arranged close to the driving lane side, that is, the straight lane is guided preferentially; when the y value is 1m, the second opening is arranged on the left side, and a deflected light guiding conduit is arranged on the opposite side, that is, a conduit is arranged in the opposite direction to the first; when the y value reaches 1.5m, a third opening is arranged between the two openings, and a vertical light guiding conduit is arranged.

7. 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°; wherein, when a vertical light guiding pipe is set in the middle, a 0° light guiding pipe is used, and when lateral light guiding pipes are set on the left and right sides, a 15° light guiding pipe, a 30° light guiding pipe, and a 45° light guiding pipe are used.

8. 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 surface guide arrow and a viaduct crossbeam; The columns are arranged on the road side 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 arranged on the road side of the viaduct, and the fluorescent marking strips, raised road signs, and road guide arrows are all arranged in multiple and evenly arranged on the road surface under the viaduct.

9. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 8 is characterized in that: A fluorescent film marking strip is arranged on the road surface under the bridge, and a yellow-green fluorescent marking strip with a length of 30 to 40 cm and a width of 10 to 20 cm is respectively arranged at both ends of the lane line with a length of 3 to 6 m; raised road signs are arranged at intervals of 8 to 10 m on the lane edge line 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 to 10 cm is covered outside the edge of the road guide arrow.

10. The self-explanatory traffic safety facility design system for median gaps in urban bridges according to claim 9 is characterized in that: The upright column is provided with a yellow and black retro-reflective vertical surface mark; the crossbeam is provided with an arched LED light strip; a linear contour mark with a length of 85 to 170 cm is arranged on the roadside guardrail; and an elastic traffic column is provided on the outer side of the road sideline.

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