CN101694745A - Safety detection method based on freeway geometry linear comprehensive technical indexes - Google Patents
Safety detection method based on freeway geometry linear comprehensive technical indexes Download PDFInfo
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Abstract
The invention relates to a safety detection method based on freeway geometry linear comprehensive technical indexes, comprising the following steps: determining distribution forms and feature parameters of end face vehicles speed; establishing a descriptive model to inform the freeway geometry linear comprehensive technical indexes; structuring a freeway operating vehicle speed predicting model according to the relationship between an operating vehicle speed and the linear comprehensive indexes; and structuring a freeway linear safety detection model according to the relationship between operating vehicle speed feature indexes and safety detection indexes. Compared with the prior art, the invention has the advantages of systematicness, universal applicability, maneuverability and the like.
Description
Technical field
The present invention relates to the Modern Transportation Technology field, particularly relate to a kind of safety detection method based on freeway geometry linear comprehensive technical indexes.
Background technology
In people-Che-Lu system, the road plays crucial effects as the carrier of whole system, and the every linear index of highway has determined traveling security and comfortableness.Highway alignment is the aggregate of horizontal alignment, vertical alignment and transversal section.China is satisfying under motor racing and the mechanics requirement prerequisite at present, adopting " design speed " is that design speed carries out highway route design, design speed is a fixed value for a specific road section, it is as underlying parameter, is used to stipulate that this highway section satisfies minimum route technical indicators such as required minimum curvature of operation security and minimum sighting distance.According to " specification of the highway route design ", after the design speed of a highway is determined, its corresponding circular curve radius, lane width, superelevation, widen, the minimum index of design considerations such as longitudinal gradient, sighting distance, vertical curve radius just determined.As long as minimum how much indexs that designing institute adopts greater than pairing minimum how much indexs of selected design speed, think that then this design is that compliant requires.
Yet studies show that both at home and abroad in recent decades: the highway geometry linear that only single-phase individual index compliant requires can not guarantee running safety effectively.When automobile travelled on highway, the driver generally was the speed of a motor vehicle of determining oneself according to road travel condition (linear how much, road surface, weather, environment and traffic flow density) and the performance of vehicle own.As long as conditions permit, the driver always tends to adopt higher speed to travel.When automobile sails the lower curve highway section of index suddenly into by the higher highway section of design objective, many drivers are former thereby can not recognize in time that the speed of a motor vehicle is too high because of driving inertia etc., maybe had little time to slow down or slow down inadequately when the sensation speed of a motor vehicle is too high, traffic hazard just takes place in moment like this.
In view of the deficiency that the Route Design method based on design speed exists, in recent years, developed countries such as Germany, France and Australia extensively adopt the Route Design Method based on travelling speed.China also is in the starting stage in the research of association area, and desiring to adopt fully operating speed to carry out highway route design also needs more deep research.
Summary of the invention
Technical matters to be solved by this invention is exactly to provide a kind of safety detection method based on freeway geometry linear comprehensive technical indexes for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: the safety detection method based on freeway geometry linear comprehensive technical indexes is characterized in that this method comprises:
Determine end face speed of a motor vehicle distribution form and characteristic parameter;
High speed geometry linear comprehensive technical indexes descriptive model is told in foundation;
According to the relation of operating speed and linear overall target, make up highway operating speed forecast model;
Relation according to operating speed characteristic index and security detection index makes up highway route security detection model.
Described definite end face speed of a motor vehicle distribution form and characteristic parameter further comprise: according to highway lineament and traffic conditions, and data such as traffic volume of highway and traffic flow composition, accident situation, design document, utilization systematic analysis, dynamics of vehicle, ergonomics, psychophysiology are carried out the internal and external reasons analyzing and processing to the road conditions, vehicle performance, driver characteristics and other traffic control measures that influence vehicle operating, determine the moving law and the difference of different vehicle; According to the dissimilar instrument characteristics that test the speed, selection principle, the speed measuring position in the highway section of determining to test the speed, scheme tests the speed; By to vehicle on highway operating speed distribution inspection, determine section speed of a motor vehicle distribution form and characteristic parameter.
The described freeway geometry linear comprehensive technical indexes descriptive model of setting up further comprises: according to the space geometry characteristic of highway alignment, highway section is carried out feature classification and statement, Changing Pattern in conjunction with running velocity, utilization analytical hierarchy process and system analysis method, in correlativity, comparability, feasibility in principle, choose suitable index and quantification; By analyzing the correlativity of all kinds of linear indexs and operating speed, choose the linear index of appreciable impact operating speed with this, make up the function that reflects highway space geometry characteristic and can embody the correlation type highway section different section alternate position spike opposite sex, each parameter in the linear described function is carried out analyzing and processing to the susceptibility of linear overall target, set up the objective description model of freeway geometry linear comprehensive technical indexes.
Described structure highway operating speed forecast model further comprises: the relation of determining the automobilism speed of a motor vehicle and freeway geometry linear comprehensive technical indexes, the utilization mathematical modeling theory is set up the operating speed forecast model, and model is verified and is revised in conjunction with actual conditions and traffic simulation technology; Use Principle of Statistics, artificial neural network theories, driver psychology to learn the Forecasting Methodology of determining model simultaneously, and checked with measured data.
Described structure highway route security detection model further comprises: according to the mutual relationship of operating speed characteristic index and highway safety, determine to meet the safety evaluatio index of China's speed of a motor vehicle distribution characteristics, set up freeway geometry linear safety evaluatio model; To integrate theory with practice, utilization highway section accident data data, driver psychology physiological data, system simulation technology are set up concrete exercisable evaluation flow process for the model evaluation standard; Make up highway route security detection model.
Compared with prior art, the invention solves the difficulty that the numerous indexs of direct employing are carried out the road alignment design quality assessment, avoided the limitation of single evaluation index, a kind of linear overall target descriptive model of comprehensive sign highway alignment space geometry characteristics has been proposed, by prediction highway section operating speed, thereby the highway route design safety is carried out the comprehensive quantification evaluation, and present technique has the following advantages:
(1) systematicness.Flat according to highway, vertical, the linear technical indicator of horizontal three aspects is to the Different Effects mechanism of security, choose the curvature of space, curvature variation, the curve corner, top rake, technical indicators such as lane width, make up the horizontal alignment descriptive model respectively, the linear correction model in vertical alignment model and transversal section, consider geometry of space principle and road alignment design characteristics at last, with flat, ordinate shape overall target is main, the linear index in transversal section is as the mode of revising, combination makes up three-dimensional highway alignment overall target descriptive model, the line parameter of going forward side by side is demarcated and sensitivity analysis, in order to describe the objective security of highway route;
(2) general applicability.Present technique has taken into full account operating speed on the highway with the variation of the road traffic condition continuous variation along vehicle heading.The highway alignment overall target has certain correlativity as quantizating index that characterizes the flat, vertical, horizontal geometrical property of highway alignment and speed of a motor vehicle variation, not only the linear feature with this section is relevant for the operating speed V85 of certain section simultaneously, and is subjected to vehicle to cross linear influence in highway section and highway section, the place ahead certain-length scope.Be changed to fundamental point with the linear common speed of a motor vehicle that influences before and after the highway, acceleration and deceleration performance according to driver's visual demand and vehicle, relation by highway alignment overall target accumulated value and current section operating speed in the certain-length scope before and after the research, foundation can be predicted the highway operating speed in China 4～8 tracks continuously based on the operating speed forecast model of freeway geometry linear overall target;
(3) operability.In conjunction with China's highway overall safety service level, determine the road safety relative indicatrix, set up highway route design consistance evaluation criterion, thereby formed the exercisable safety evaluatio technology of a cover based on freeway geometry linear comprehensive technical indexes; And the computer technology of application of advanced, worked out linear designing quality safety evaluatio program, set up operating speed prediction and linear design safety evaluation system based on the highway route overall target.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, based on the safety detection method of freeway geometry linear comprehensive technical indexes, this method comprises:
Determine end face speed of a motor vehicle distribution form and characteristic parameter;
High speed geometry linear comprehensive technical indexes descriptive model is told in foundation;
According to the relation of operating speed and linear overall target, make up highway operating speed forecast model;
Relation according to operating speed characteristic index and security detection index makes up highway route security detection model.
Described definite end face speed of a motor vehicle distribution form and characteristic parameter further comprise: according to highway lineament and traffic conditions, and data such as traffic volume of highway and traffic flow composition, accident situation, design document, utilization systematic analysis, dynamics of vehicle, ergonomics, psychophysiology are carried out the internal and external reasons analyzing and processing to the road conditions, vehicle performance, driver characteristics and other traffic control measures that influence vehicle operating, determine the moving law and the difference of different vehicle; According to the dissimilar instrument characteristics that test the speed, selection principle, the speed measuring position in the highway section of determining to test the speed, scheme tests the speed; By to vehicle on highway operating speed distribution inspection, determine section speed of a motor vehicle distribution form and characteristic parameter; The described freeway geometry linear comprehensive technical indexes descriptive model of setting up further comprises: according to the space geometry characteristic of highway alignment, highway section is carried out feature classification and statement, Changing Pattern in conjunction with running velocity, utilization analytical hierarchy process and system analysis method, in correlativity, comparability, feasibility in principle, choose suitable index and quantification; By analyzing the correlativity of all kinds of linear indexs and operating speed, choose the linear index of appreciable impact operating speed with this, make up the function that reflects highway space geometry characteristic and can embody the correlation type highway section different section alternate position spike opposite sex, each parameter in the linear described function is carried out analyzing and processing to the susceptibility of linear overall target, set up the objective description model of freeway geometry linear comprehensive technical indexes; Described structure highway operating speed forecast model further comprises: the relation of determining the automobilism speed of a motor vehicle and freeway geometry linear comprehensive technical indexes, the utilization mathematical modeling theory is set up the operating speed forecast model, and model is verified and is revised in conjunction with actual conditions and traffic simulation technology; Use Principle of Statistics, artificial neural network theories, driver psychology to learn the Forecasting Methodology of determining model simultaneously, and checked with measured data; Described structure highway route security detection model further comprises: according to the mutual relationship of operating speed characteristic index and highway safety, determine to meet the safety evaluatio index of China's speed of a motor vehicle distribution characteristics, set up freeway geometry linear safety evaluatio model; To integrate theory with practice, utilization highway section accident data data, driver psychology physiological data, system simulation technology are set up concrete exercisable evaluation flow process for the model evaluation standard; Make up highway route security detection model.
The present invention uses the relevant knowledge of traffic engineering, systems engineering, traffic flow theory, running car dynamics, driver psychology physiology principle and other field, utilize technological means such as real road observation combines with traffic simulation, theoretical analysis combines with numerical analysis, engineering is used and tracking observation combines, propose safety evaluatio technology based on freeway geometry linear comprehensive technical indexes.Concrete technical scheme is divided into four parts:
(1) extensively consults domestic and foreign literature, on the basis of fully summary, contrast, analysis on achievements and mature technology, use for reference advanced experience, analyze the present situation of the present correlative study of China and the deficiency of existence; In conjunction with China's highway lineament and traffic conditions, ruuning situation to typical vehicle (lorry, passenger vehicle, car) is investigated, extensively collect data and data such as traffic volume of highway and traffic flow composition, accident situation, design document, utilization systematic analysis, dynamics of vehicle, ergonomics, psychophysiology scheduling theory carry out the internal and external reasons analysis to the road conditions, vehicle performance, driver characteristics and other traffic control measures that influence vehicle operating, the moving law and the difference of research different vehicle; On the basis of the more dissimilar instrument characteristics that test the speed, test the speed in the investigation selection principle, the speed measuring position in highway section, the scheme that tests the speed etc. are studied; By to vehicle on highway operating speed distribution inspection, determine section speed of a motor vehicle distribution form and characteristic parameter.
(2) the space geometry characteristic with highway alignment is the starting point, highway section is carried out feature classification and statement, in conjunction with the Changing Pattern of running velocity, utilization analytical hierarchy process and system analysis method, in correlativity, comparability, feasibility in principle, choose suitable index and quantification.By analyzing the correlativity of all kinds of linear indexs and operating speed, make up the function that reflects highway space geometry characteristic and can embody the correlation type highway section different section alternate position spike opposite sex with this linear index of choosing the appreciable impact operating speed, each parameter in the linear described function is analyzed the susceptibility of linear overall target, set up the objective description model of freeway geometry linear comprehensive technical indexes.
(3) method that combines with test by theoretical analysis, the relation of the research automobilism speed of a motor vehicle and freeway geometry linear comprehensive technical indexes, the utilization mathematical modeling theory is set up the operating speed forecast model, and model is verified and is revised in conjunction with actual conditions and traffic simulation technology; Use Principle of Statistics, artificial neural network theories, driver psychology to learn the multiple Forecasting Methodology of research model simultaneously, and checked with measured data.
(4) analysing in depth on operating speed characteristic index and the highway safety mutual relationship basis, propose to meet the safety evaluatio index of China's speed of a motor vehicle distribution characteristics, set up freeway geometry linear safety evaluatio model; To integrate theory with practice, utilization highway section accident data, driver psychology physiological data, system simulation technology are studied the model evaluation standard, set up concrete exercisable evaluation flow process, the final safety evaluatio technology that proposes based on freeway geometry linear comprehensive technical indexes.
Embodiment
Safety evaluatio technology based on freeway geometry linear comprehensive technical indexes mainly is to carry out the operating speed prediction by unified model and the operating speed forecast model that uses the description highway alignment space geometry characteristic of setting up to building or plan to build highway, determine the operating speed characteristic index, highway is carried out the analysis of aspects such as operating speed harmony and linear design consistance according to linear design method for evaluating consistency and evaluation criterion, specific implementation method is as follows:
(1) determines the research highway section, research object mainly comprises the highway of planning to build He having built in 4～8 tracks, type of vehicle mainly comprises A type car (minibus) and D type car (large-scale bogie), collects flat, vertical, horizontal linear design data of highway and linear achievement data.
(2) according to linear design data arrangement highway route design index, comprise radius, the gradient, corner, length of transition curve, transversal section overall width etc., adjust spacing voluntarily according to accuracy requirement, calculate the linear comprehensive index value of pointwise and be accumulated to the linear overall target accumulated value of this point from starting point.Calculate the accumulated value of linear overall target in the linear coverage of forward and backward side.Comprise the linear comprehensive index value F (back 200m) in the rear 200m acceleration and deceleration length range, linear comprehensive index value F (preceding 250m), the F (preceding 100m) in the effective fixation range of the place ahead 250m, 100m.
(3) application speed forecast model predetermined speed value.Carry out prediction of speed according to the corresponding respectively I class of linear index classification index A type vehicle speed forecast model, II class index A type vehicle speed forecast model, I class index D type vehicle speed forecast model, II class index D type vehicle speed forecast model.
(4) according to the division result and the operating speed predicted data of unit, highway section, calculating is used for all types of speed of a motor vehicle characteristic indexs of linear consistency analysis, comprises that the speed of a motor vehicle coefficient of variation, passenger-cargo speed of a motor vehicle extreme difference compare, the section speed of a motor vehicle is poor, the speed of a motor vehicle reduces coefficient, non-intersection speed dispersion.Carry out the linear design safety analysis in highway section according to the result of calculation of speed of a motor vehicle characteristic index and highway route design safety evaluation method and evaluation criterion, determine the residing operation security grade in analyzed highway section.
Claims (5)
1. based on the safety detection method of freeway geometry linear comprehensive technical indexes, it is characterized in that this method comprises:
Determine end face speed of a motor vehicle distribution form and characteristic parameter;
High speed geometry linear comprehensive technical indexes descriptive model is told in foundation;
According to the relation of operating speed and linear overall target, make up highway operating speed forecast model;
Relation according to operating speed characteristic index and security detection index makes up highway route security detection model.
2. the safety detection method based on freeway geometry linear comprehensive technical indexes according to claim 1, it is characterized in that, described definite end face speed of a motor vehicle distribution form and characteristic parameter further comprise: according to highway lineament and traffic conditions, and traffic volume of highway and traffic flow composition, accident situation, data such as design document, the utilization systematic analysis, dynamics of vehicle, ergonomics, psychophysiology is to influencing the road conditions of vehicle operating, vehicle performance, the internal and external reasons analyzing and processing is carried out in driver characteristics and other traffic control measures, determines the moving law and the difference of different vehicle; According to the dissimilar instrument characteristics that test the speed, selection principle, the speed measuring position in the highway section of determining to test the speed, scheme tests the speed; By to vehicle on highway operating speed distribution inspection, determine section speed of a motor vehicle distribution form and characteristic parameter.
3. the safety detection method based on freeway geometry linear comprehensive technical indexes according to claim 1 and 2, it is characterized in that, the described freeway geometry linear comprehensive technical indexes descriptive model of setting up further comprises: according to the space geometry characteristic of highway alignment, highway section is carried out feature classification and statement, Changing Pattern in conjunction with running velocity, utilization analytical hierarchy process and system analysis method, in correlativity, comparability, feasibility in principle, choose suitable index and quantification; By analyzing the correlativity of all kinds of linear indexs and operating speed, choose the linear index of appreciable impact operating speed with this, make up the function that reflects highway space geometry characteristic and can embody the correlation type highway section different section alternate position spike opposite sex, each parameter in the linear described function is carried out analyzing and processing to the susceptibility of linear overall target, set up the objective description model of freeway geometry linear comprehensive technical indexes.
4. the safety detection method based on freeway geometry linear comprehensive technical indexes according to claim 3, it is characterized in that, described structure highway operating speed forecast model further comprises: the relation of determining the automobilism speed of a motor vehicle and freeway geometry linear comprehensive technical indexes, the utilization mathematical modeling theory is set up the operating speed forecast model, and model is verified and is revised in conjunction with actual conditions and traffic simulation technology; Use Principle of Statistics, artificial neural network theories, driver psychology to learn the Forecasting Methodology of determining model simultaneously, and checked with measured data.
5. the safety detection method based on freeway geometry linear comprehensive technical indexes according to claim 4, it is characterized in that, described structure highway route security detection model further comprises: according to the mutual relationship of operating speed characteristic index and highway safety, determine to meet the safety evaluatio index of China's speed of a motor vehicle distribution characteristics, set up freeway geometry linear safety evaluatio model; To integrate theory with practice, utilization highway section accident data data, driver psychology physiological data, system simulation technology are set up concrete exercisable evaluation flow process for the model evaluation standard; Make up highway route security detection model.
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| CN101976501B (en) * | 2010-10-29 | 2012-05-30 | 天津市市政工程设计研究院 | Principal component analysis and neural network based port road safety prediction method |
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| CN102360530B (en) * | 2011-10-17 | 2014-04-23 | 天津市市政工程设计研究院 | Method for checking speed consistency for basic road sections of collection and distribution harbors of port |
| CN104680790A (en) * | 2015-03-17 | 2015-06-03 | 天津市市政工程设计研究院 | Assembling and evacuating port road security evaluation method based on error back-propagation algorithm |
| CN104657623A (en) * | 2015-03-17 | 2015-05-27 | 天津市市政工程设计研究院 | Road alignment safe checking method based on driving simulation technology |
| CN106781505A (en) * | 2015-04-24 | 2017-05-31 | 王栋 | A kind of data processing method of mountainous area highway actual road test GES detecting system |
| CN106781505B (en) * | 2015-04-24 | 2020-08-14 | 西安航空学院 | Data processing method of mountain area highway road test vehicle speed signal detection system |
| CN106485919A (en) * | 2016-10-11 | 2017-03-08 | 东南大学 | A kind of method for judging that through street fixed point tachymeter is affected on traffic accident quantity |
| CN107392373A (en) * | 2017-07-19 | 2017-11-24 | 哈尔滨工业大学 | A kind of linear index selection and optimization method based on sensitivity analysis and traffic safety |
| CN108711281A (en) * | 2018-03-23 | 2018-10-26 | 武汉理工大学 | A method of with section actual driving speed data evaluation Highway Safety |
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Open date: 20100414 |