CN103177581B - Bridge damage reducing system setting method utilizing driver visual perception - Google Patents
Bridge damage reducing system setting method utilizing driver visual perception Download PDFInfo
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- CN103177581B CN103177581B CN201310074253.9A CN201310074253A CN103177581B CN 103177581 B CN103177581 B CN 103177581B CN 201310074253 A CN201310074253 A CN 201310074253A CN 103177581 B CN103177581 B CN 103177581B
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Abstract
The invention provides a bridge damage reducing system setting method utilizing driver visual perception. The method includes: collecting lane width data and vehicle driving data, which includes vehicle speed data and vehicle distance data, of a road bridge section which requires a bridge damage reducing system; analyzing the data to build a vehicle speed distribution model and a vehicle distance distribution model; finding a position where the vehicle speed just exceeds a designed speed to serve as a first position; finding a position where the vehicle distance just exceeds a standard stopping sight distance to serve as a second position; taking the middle point of the first position and the second position as an initial setting point of the bridge damage reducing system; and calculating single marking design parameters according to Mueller-Lyle illusion effect. The bridge damage reducing system is set according to the Mueller-Lyle illusion effect, drivers are induced to actively control vehicle speed and enlarge vehicle distance, and accordingly driving safety of the bridge road section is improved.
Description
Technical field
The invention belongs to traffic safety technology field, be specifically related to a kind of bridge impairment Operation system setting method utilizing driver's visual perception.
Background technology
Vehicular load is the key factor affecting bridge security, and the bridge seat number damaged because of vehicular load increases year by year.Along with the development of communication, the volume of traffic constantly increases, running velocity also improves constantly, carload has become the one of the main reasons causing bridge pavement breakage, many bridges opened soon, under the impact being subject to the ever-increasing rapid vehicle of the volume of traffic, bridge surface mangle is serious, what have is even forced to interruption maintenance, and bridge Social benefit and economic benefit can not be given full play to.
Spaces of vehicles is the direct factor affecting vehicular load.Spaces of vehicles is little, then vehicular load number spanning arranged is many, and deflection of bridge span also increases thereupon, all will have a negative impact to the health of bridge self and bridge pavement.Therefore how effectively to expand spaces of vehicles, improve actual loading, to raising bridge safty, extend bridge pavement significant for serviceable life.
The measure having had a lot of speed of a motor vehicle to control both at home and abroad at present, comprise: stereopsis illusion graticule, thin layer are mated formation, vibrated speed reduction marking etc., but said method existing defects separately, the bridge speed of a motor vehicle can not be applicable to control: stereopsis illusion graticule can cause the vigilance of driver, but for the driver being unfamiliar with situation, easily cause emergency brake thus bring out rear-end collision, for the driver be in the push, its reduction of speed effect weakens again greatly; Thin layer is mated formation and is reduced the speed of a motor vehicle by color and vibrating alert driver, but its Vehicular vibration brought causes bridge pavement to damage aggravation; Vibration speed reduction marking exists to mat formation same problem with thin layer, and it is not suitable for the control of the bridge speed of a motor vehicle.Can not play a role to expansion vehicle driving spacing in said method, and the measure of the domestic and international expansion vehicle driving spacing for bridge impairment at present imperfection.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of bridge impairment Operation system setting method utilizing driver's visual perception, principle according to Müller-Lyer proposes method for designing to bridge impairment system, driver perception velocities raising, spaces of vehicles in highway bridge sections of road process are shortened, thus induction driver active operation control lines vehicle speed, expansion spaces of vehicles, promote the traffic safety in highway bridge section.
The present invention for solving the problems of the technologies described above taked technical scheme is: a kind of bridge impairment Operation system setting method utilizing driver's visual perception, is characterized in that: it comprises the following steps:
S1, the lane width data gathering the highway bridge section of bridge to be established impairment system and vehicle driving data, vehicle driving data comprise vehicle speed data and vehicle distance data;
The vehicle driving data that S2, analysis gather, set up highway bridge non-intersection speed distributed model and spacing distributed model;
S3, based on highway bridge non-intersection speed distributed model, finding out the position of the speed of a motor vehicle just beyond design rate, is primary importance; Based on highway bridge section spacing distributed model, finding out vehicle specifies stopping sight distance value just beyond Highway Code position by spacing during highway bridge section, is the second place;
S4, calculate distance d between primary importance and the second place, get the initial set-point of point midway as bridge impairment system of primary importance and the second place, bridge impairment system is periodic structure, each cycle is divided into front semiperiod and later half cycle, wherein the front semiperiod is made up of yellow graticule group and follow-up white space thereof, and the later half cycle is made up of white line group and follow-up white space thereof; Yellow graticule group and white line group form by two openings V-shaped graticule in opposite directions and the diagonal angle connecting line that is connected two V-shaped graticules;
S5, according to Müller-Lyer effect, single reticle design parameter to be calculated:
Calculate the design parameter value of single graticule in bridge impairment system according to highway bridge lane width data L, comprise the diagonal angle connecting line length b of oblique line length a, two openings V-shaped graticule in opposite directions, computing formula is:
In formula, θ is the opening angle of V-shaped graticule.
By such scheme, described step S1 comprises: 101) choose and gather section; 102) determine to gather section; 103) video traffic detection system is adopted to gather lane width data, vehicle speed data and vehicle distance data to collection section.
By such scheme, described step 102) in collection section point centered by highway bridge starting point of determining, choose upstream and downstream 50m, upstream and downstream 100m respectively, to amount to 6 section faces be data acquisition section to upstream and downstream 150m.
By such scheme, described step 103) in the collection of each collection section more than 360 sample datas.
By such scheme, in described step S4, each Cycle Length of bridge impairment system is 4b, and the yellow graticule group length wherein in each cycle is b, and white line group length is b, and the follow-up white space length of each graticule group is b.
By such scheme, in described step S4, the diagonal angle connecting line of two openings V-shaped graticule in opposite directions in bridge impairment system per cycle adopts void-solid ratio to be the design of 1:1, and every section of bold portion length value of diagonal angle connecting line is b/4.
By such scheme, in described step S4, the total length of bridge impairment system is 400m.
By such scheme, in each cycle, two openings V-shaped graticule in opposite directions adopts and is interrupted opening design: by two openings V-shaped graticule point of intersection in opposite directions, in the process that both sides, track are launched successively, arrange the opening that width is 3cm every 10cm, graticule thickness is 15cm.
Beneficial effect of the present invention is:
1, the present invention is by the setting of bridge impairment system, from the speed of a motor vehicle control main body---driver takes measures to the intrinsic propesties that the speed of a motor vehicle controls, driver can be made to produce speed over-evaluate, induction driver active operation control lines vehicle speed, expansion spaces of vehicles, reduce the coefficient of impact to bridge pavement in vehicle driving process, the traffic safety of Improving Expressway bridge, reduction bridge damnification, regulation speed successful.
2, the present invention is by the setting of bridge impairment system, from spaces of vehicles control main body---driver takes measures to the intrinsic propesties that spaces of vehicles controls, driver can be made to produce spaces of vehicles perception shorten, thus initiatively expand spaces of vehicles, the distribution of the bridge load being is tending towards even, reduces the bridge damnification brought because lotus load is excessive.
3, bridge impairment system graticule arranges simply, and raw material economics cost is low, does not produce the influential material of environment.
4, the present invention is interrupted opening design by adopting the V-shaped graticule of two subtends of single graticule group, does not affect the horizontal and vertical draining of highway, ensures that the draining of highway bridge is smooth and easy.
Accompanying drawing explanation
Fig. 1 is the setting procedure figure of one embodiment of the invention.
Fig. 2 is vehicle driving data acquisition schematic diagram.
Fig. 3 is the single cycle schematic diagram of bridge impairment system.
Fig. 4 is two openings V-shaped graticule in opposite directions and is interrupted opening design diagram.
In figure: 1-video traffic detection system, 2-highway bridge starting point, 3-V font graticule, 4-diagonal angle connecting line.
Embodiment
The present invention utilize Müller-Lyer effect (refer to the isometric lines of two scripts because of two ends arrow towards different and seem the phenomenon that arrow lines are inwardly shorter than arrow lines outwardly), (the edge rate) being changed driver's visual perception by the pavement strip of manual change's express highway pavement is referred to from driver's visual perception edge rate, entering the laying bridge impairment system graticule in track in highway bridge section, induction driver active operation control lines vehicle speed, expand spaces of vehicles, the traffic safety of Improving Expressway bridge, reduce bridge damnification.The present invention does not affect the horizontal and vertical draining of highway simultaneously, ensures that the draining of highway bridge is smooth and easy.
Below with instantiation, and with reference to accompanying drawing in detail the present invention is described in detail.
The setting procedure of bridge impairment system of the present invention can with reference to figure 1, and it comprises the following steps:
S1, the lane width data gathering the highway bridge section of bridge to be established impairment system and vehicle driving data, vehicle driving data comprise vehicle speed data and vehicle distance data.
The vehicle driving data that S2, analysis gather, set up highway bridge non-intersection speed distributed model and spacing distributed model.
S3, based on highway bridge non-intersection speed distributed model, finding out the position of the speed of a motor vehicle just beyond design rate, is primary importance; Based on highway bridge section spacing distributed model, finding out vehicle specifies stopping sight distance value just beyond Highway Code position by spacing during highway bridge section, is the second place.
S4, calculate distance d between primary importance and the second place, get the initial set-point of point midway as bridge impairment system of primary importance and the second place, bridge impairment system is periodic structure, as shown in Figure 3, each cycle is divided into front semiperiod and later half cycle, wherein the front semiperiod is made up of yellow graticule group and follow-up white space thereof, and the later half cycle is made up of white line group and follow-up white space thereof; Yellow graticule group forms with the diagonal angle connecting line 4 being connected two V-shaped graticules by two openings V-shaped graticule 3 in opposite directions with white line group.In the present embodiment, each Cycle Length of bridge impairment system is 4b, and the yellow graticule group length wherein in each cycle is b, and white line group length is b, and the follow-up white space length of each graticule group is b.The diagonal angle connecting line of two openings V-shaped graticule in opposite directions in bridge impairment system per cycle adopts void-solid ratio to be the design of 1:1, and every section of bold portion length value of diagonal angle connecting line is b/4.The total length of bridge impairment system is 400m.
S5, according to Müller-Lyer effect, single reticle design parameter to be calculated:
Calculate the design parameter value of single graticule in bridge impairment system according to highway bridge lane width data L, comprise the diagonal angle connecting line length b of oblique line length a, two openings V-shaped graticule in opposite directions, computing formula is:
In formula, θ is the opening angle of V-shaped graticule, through test, and the best results when θ=90 degree.
As shown in Figure 2, described step S1 comprises: 101) choose and gather section; 102) determine to gather section; 103) video traffic detection system 1 is adopted to gather lane width data, vehicle speed data and vehicle distance data to collection section.Step 102) in the collection section determined point centered by the starting point of bridge impairment system, choose upstream and downstream 50m, upstream and downstream 100m respectively, to amount to 6 section faces be data acquisition section to upstream and downstream 150m; Step 103) in the collection of each collection section more than 360 sample datas.
As shown in Figure 4, in each cycle, two openings V-shaped graticule in opposite directions adopts and is interrupted opening design: by two openings V-shaped graticule point of intersection in opposite directions, in the process that both sides, track are launched successively, arrange the opening that width is 3cm every 10cm, graticule thickness is 15cm.
Have selected in example that speed limit is 60km/h, lane width is the Jiujiang Bridge over Yangtse River of 3.5m, speed data collection is selected fine, the non-traffic peak period, and in strict accordance with required by the present invention, in collection vehicle speed data process, eliminates other disturbing factors.Picking rate sample data is more than 8000.
Utilize MATLAB7.0 software to carry out matching to speed data, the distribution of vehicle distance data collection, obtain primary importance and the second place.
According to design rate be 60km/h and speed data matching distribution, determine that primary importance is 48.45m place after the starting point of bridge top.
The stopping sight distance value specified according to Highway Code and speed data matching distribution, determine that the second place is 32.63m place after the starting point of bridge top.
Calculating bridge impairment Operation system setting position starting point is 40.54m place after the starting point of bridge top.
A=2.48m is calculated according to formula (1).B=4.13m is calculated according to formula (2).
Single Cycle Length is 4b=16.52m.
In diagonal angle connecting line between the V-shaped graticule of two subtends of the single graticule group of bridge impairment system, every section of solid line length value is b/4=1.04m.
The applicant is according to patent working scheme, and lay road speed control effects significantly by carrying out experimental verification on road in middle Jiujiang Bridge over Yangtse River, spaces of vehicles expands Be very effective.
Claims (8)
1. utilize a bridge impairment Operation system setting method for driver's visual perception, it is characterized in that: it comprises the following steps:
S1, the lane width data gathering the highway bridge section of bridge to be established impairment system and vehicle driving data, vehicle driving data comprise vehicle speed data and vehicle distance data;
The vehicle driving data that S2, analysis gather, set up highway bridge non-intersection speed distributed model and spacing distributed model;
S3, based on highway bridge non-intersection speed distributed model, finding out the position of the speed of a motor vehicle just beyond design rate, is primary importance; Based on highway bridge section spacing distributed model, finding out vehicle specifies stopping sight distance value just beyond Highway Code position by spacing during highway bridge section, is the second place;
S4, calculate distance d between primary importance and the second place, get the initial set-point of point midway as bridge impairment system of primary importance and the second place, bridge impairment system is periodic structure, each cycle is divided into front semiperiod and later half cycle, wherein the front semiperiod is made up of yellow graticule group and follow-up white space thereof, and the later half cycle is made up of white line group and follow-up white space thereof; Yellow graticule group and white line group form by two openings V-shaped graticule in opposite directions and the diagonal angle connecting line that is connected two V-shaped graticules;
S5, according to Müller-Lyer effect, single reticle design parameter to be calculated:
Calculate the design parameter value of single graticule in bridge impairment system according to highway bridge lane width data L, comprise the diagonal angle connecting line length b of oblique line length a, two openings V-shaped graticule in opposite directions, computing formula is:
In formula, θ is the opening angle of V-shaped graticule.
2. the bridge impairment Operation system setting method utilizing driver's visual perception according to claim 1, is characterized in that: described step S1 comprises: 101) choose and gather section; 102) determine to gather section; 103) video traffic detection system is adopted to gather lane width data, vehicle speed data and vehicle distance data to collection section.
3. the bridge impairment Operation system setting method utilizing driver's visual perception according to claim 2, it is characterized in that: described step 102) in collection section point centered by highway bridge starting point of determining, choose upstream and downstream 50m, upstream and downstream 100m respectively, to amount to 6 section faces be data acquisition section to upstream and downstream 150m.
4. the bridge impairment Operation system setting method utilizing driver's visual perception according to claim 2, is characterized in that: described step 103) in the collection of each collection section more than 360 sample datas.
5. the bridge impairment Operation system setting method utilizing driver's visual perception according to claim 1, it is characterized in that: in described step S4, each Cycle Length of bridge impairment system is 4b, yellow graticule group length wherein in each cycle is b, white line group length is b, and the follow-up white space length of each graticule group is b.
6. the bridge impairment Operation system setting method utilizing driver's visual perception according to claim 1, it is characterized in that: in described step S4, the diagonal angle connecting line of two openings V-shaped graticule in opposite directions in bridge impairment system per cycle adopts void-solid ratio to be the design of 1:1, and every section of bold portion length value of diagonal angle connecting line is b/4.
7. the bridge impairment Operation system setting method utilizing driver's visual perception according to claim 1, it is characterized in that: in described step S4, the total length of bridge impairment system is 400m.
8. the bridge impairment Operation system setting method utilizing driver's visual perception according to claim 1, it is characterized in that: in each cycle, two openings V-shaped graticule in opposite directions adopts and is interrupted opening design: by two openings V-shaped graticule point of intersection in opposite directions, in the process that both sides, track are launched successively, arrange the opening that width is 3cm every 10cm, graticule thickness is 15cm.
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| CN109887308B (en) * | 2019-03-29 | 2021-05-04 | 武汉理工大学 | Long tunnel vehicle speed control system and method based on optical flow rate |
| CN113846582B (en) * | 2021-09-02 | 2023-03-28 | 武汉工程大学 | Expressway rear-end collision prevention marking design method based on inverse straight line perspective |
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| EP1400630A3 (en) * | 2002-09-19 | 2004-09-22 | Roke Manor Research Limited | A vehicle control system, array and array deployment apparatus |
| CN101727743B (en) * | 2009-11-27 | 2012-04-18 | 东南大学 | Method for setting roadside speed limit signs on ordinary road |
| DK177199B1 (en) * | 2010-06-29 | 2012-05-29 | Automania Aps | Roadway marking for traffic safety |
| CN102888816B (en) * | 2012-10-11 | 2015-01-21 | 长安大学 | Express way deceleration marked line and configuring method thereof |
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