CN106021832A - Optimization design method for a path plane before track laying - Google Patents
Optimization design method for a path plane before track laying Download PDFInfo
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Abstract
The invention discloses an optimization design method for a path plane before track laying. The method comprises the following steps that firstly, an original data self-defining entity before track laying is established; secondly, plane optimization control parameters are set; thirdly, path plane linear intersection points are automatically adjusted; fourthly, the path plane curve slow length is automatically adjusted; fifthly, a path plane intelligent optimization mathematical model is established; sixthly, path plane intelligent optimization designing is carried out; seventhly, a path plane design drawing is updated; eighthly, a path plane optimization comparison effect is output. According to the method, automatic adjustment and an intelligent optimization algorithm are comprehensively adopted, the mathematical model is advanced, an existing working means is renovated, the plane optimization speed can be remarkably increased, the design quality can be remarkably improved, the automation degree and the intelligent degree are high, practicality is high, the design efficiency can be greatly improved, and the method has obvious application and popularization value.
Description
Technical field
The present invention relates to track plan Optimization Design, track plan intelligent optimization before particularly relating to lay a railway track
Method for designing.
Background technology
After railway and the bridge of city rail traffic route, tunnel civil engineering structure complete, due to measurement error,
, inevitably there is the circuit after civil engineering completion in working vessels or the factor such as error, malformation displacement
Centrage and the linear generation in design space deviation, have influence on design gauge and Track regularity etc..Above-mentioned execute
The horizontal alignment error produced after work must carry out the adjustment of necessity before track construction, to ensure design limit
Boundary and Track regularity meet relevant requirement.Track plan is linear can be decomposed into straight line, circular curve eases up
With curve three part, the coordinate of each intersection point, sweep long length of curve of easing up determine.Due to parameter
Numerous, plane optimizing design becomes sufficiently complex, and only thinking and imagination with people is difficult to find satisfied setting
Meter result.For a long time, designer carries out plane optimizing design in manual calculation mode always, needs
Mass data to be organized is repeated calculating contrast, process time and effort consuming, has a strong impact on work efficiency.Special
It is not for two-wire circuit, it is necessary to combine two wires design and distance between centers of tracks calculates, it is considered to design structure centre line
And the model conversation between designed lines centrage and measurement structure centrage, could correctly adjust satisfied
The planar line position that bridge tunnel and track structure technology require.In the past owing to being restricted by technical method, can only
First carry out single line adjustment according to baseline, then allotted two wires by circuit professional according to the baseline after adjusting,
Detect plane overrun condition after calculating central lines of track again, if improper, adjust the most again, so
Circulation is until satisfied, and its process is the most loaded down with trivial details, at present, does not the most also have corresponding mature technology
Method, art methods is primarily adapted for use in the process of single line, and method underaction, automatization and intelligence
Level can be changed relatively low, constrain track plan optimization design.
Summary of the invention
For the problem existing for current track plan optimization design and present situation, the present invention proposes one and lays a railway track
Front circuit plane optimizing method for designing, circuit initial data custom entities before being laid a railway track by structure, arrange
Plane optimizing controls parameter, automatically adjusts track plan straight-line intersection and curve is slow long, on this basis,
Build track plan intelligent optimization mathematical model, carry out track plan Intelligent Optimal Design, final updating line
Road plane design drawing, outlet line plane optimizing contrast effect.
Involved in the present invention lay a railway track before circuit plane optimizing method for designing, it is characterised in that the method includes
Following steps:
S1, build lay a railway track before circuit initial data custom entities
Using original construction drawing circuit design data and bridge tunnel field data to build, circuit design data includes
Circuit design specification, circuit model title, chain rupture mileage, plane and straight line intersection point data, Plane Curved
Line delays long data, superrelation on curve data, vertical section knick point data, bridge gap data, tunnel gap
Data, yard gap data, two-wire circuit includes an original line and two wires planar design data, and bridge tunnel is real
Survey data refers to that bridge tunnel surveys structure centre line data, is made up of actual measurement structure centre line node, each node
A corresponding measured profile, each node includes marking mileage, coordinate and elevation, surveys structure centre line
Node uses polyline to connect, and draws actual measurement terminus mark mileage at actual measurement terminus.
S2, arrange plane optimizing control parameter
Plane optimizing controls parameter and includes gauge parameter and plane error standard, and plane error standard includes height
Build bridge and tunnel lateral direction allows maximum error；Optimal control parameter is on circuit initial data custom entities
It is configured by first original circuit mileage, corresponding with the change of bridge tunnel structure, including adding, editing and delete behaviour
Make；According to first original circuit mileage calculation plane coordinates position, mark controls parameter and mileage.
S3, automatically adjust track plan straight-line intersection
By fitting a straight line, adjust plane and straight line limit intersecting point coordinate；First, calculate straightway plane difference,
Plane difference calculates according to actual measurement structure centre line node correspondence, i.e. by eyeball coordinate projection to current flat
In the design lines of face, calculate continuous mileage, chain rupture sequence number, mark mileage and Coordinate of central line by intersection point, then
According to measured data, it is calculated each plane difference measuring point；Secondly, determine to be adjusted straight
Line segment falls, and is calculated each value that transfinites measuring point according to plane difference, according to plane error standard
Each straightway being invaded limit situation be analyzed, provide paragraph properties, paragraph properties includes the section of not transfiniting
Fall and the paragraph that transfinites, determine straight line paragraph to be adjusted；Again, computational analysis intersection point adjusts mode, hands over
Point adjusts and adjusts intersecting point coordinate exactly, including moving along front tangential direction, move along rear tangential direction, certainly
By adjusting and not adjusting, if straightway does not transfinites before intersection point, after intersection point, straightway transfinites, then along front cutting
Intersection point is moved in line direction, if straightway transfinites before intersection point, after intersection point, straightway does not transfinites, then along rear cutout
Intersection point is moved in line direction, if intersection point tandem section all transfinites, then moves freely intersection point, if intersection point
Tandem section does not transfinites, and does not adjusts；Then, fitting a straight line section, calculate position of intersecting point, for
Each straightway, according to the terminus mileage of straightway, obtains the actual measurement structure centre line in straightway
Data, plane difference and the value that transfinites, use the minimum of maximal possibility estimation to actual measurement structure centre line node
Square law carries out fitting a straight line, obtains the straight line parameter of matching, obtains new straight line, to new straight line
While ask friendship two-by-two, calculate the position of intersecting point made new advances, and be modified according to intersection point adjustment mode；?
After, adjust position of intersecting point, according to the adjustment mode of paragraph properties and intersection point, amendment track plan straight line is handed over
Point coordinates.
S4, automatically to adjust track plan curve slow long
According to circuit design specification, determine length of transition curve scope, by the principle that the value that transfinites is minimum, adjust
Whole length of transition curve；First, calculate flat vertical difference, after by curve segmentation, superrelation on curve array is set,
Calculate flat vertical difference；Secondly, determine curve paragraph to be adjusted, be calculated each according to plane difference
The individual value that transfinites measuring point, then each straightway and curved section being invaded limit situation is analyzed, and is given
Paragraph properties, paragraph properties includes do not transfinite paragraph and the paragraph that transfinites, determines curve paragraph to be adjusted；
Again, computational analysis curve delays long adjustment mode, and curve delays long adjustment mode and is divided into adjustment easement curve long
Spend and do not adjust, when 3 in Curve Segment has and transfinites, adjusting length of transition curve, when 3 in Curve Segment does not surpass
Limit, but tandem section has overrun condition, the most also adjusts length of transition curve, and other situation is the most uncomfortable
Whole；Then, acquisition standard delays long scope, and calculated curve is slow long, and curve delays long adjustment and must is fulfilled for line
Road design specification, length of transition curve is according to sweep, section passenger train designed driving speed and work
Journey condition determines, according to sweep, obtains the length of transition curve of standard recommendation, minimum easement curve
Length is typically worth and difficulty value, with minimum length of transition curve difficulty value as lower limit, slow according to recommend
Typically it is worth calculating upper limit with length of curve and minimum length of transition curve, determines easement curve adjusting range,
For each curve paragraph, according to easement curve adjusting range, by relaxing song before and after step-length loop modification
Line length, recalculates the value that transfinites, and by the principle that the value that transfinites is minimum, determines that optimized curve is slow long；
Finally, adjusting curve slow long, delay long adjustment mode according to paragraph properties and curve, amendment track plan delays
And length of curve.
S5, build track plan intelligent optimization mathematical model
Based on planar design variable, constraints and optimization aim, build track plan intelligent optimization mathematics
Model；Track plan is linear is divided into straight line, circular curve and three parts of easement curve, and easement curve divides again
For front easement curve and rear easement curve, planar design variable includes straight-line intersection coordinate, circular curve radius
Length of transition curve front and back, these variablees uniquely determine track plan midline position；Constraints refers to line
Specification that road planar design is to be met and control requirement, minimum including smallest curve radius constraint, circular curve
The constraint of length constraint, intermediate straight line minimum length, minimum length of transition curve constraint, terminus wiring constraint
Constraint is widened with two wires design lines spacing；Optimization aim refers to that track plan always transfinites value, by each eyeball
Place level transfinite value absolute value sum calculating, be the target judging track plan Intelligent Optimal Design effect
Functional value, the level value value peace right side of face that includes transfiniting on the left of plane that transfinites transfinites value, and target function value is
Little representing optimized effect is best.
S6, track plan Intelligent Optimal Design
On the basis of adjustment track plan straight-line intersection automatically and the automatic slow length of adjustment track plan curve,
Utilize track plan intelligent optimization mathematical model, by arranging plane intelligent optimal control parameter, initialization
Plane population scheme, Calculation Plane population scheme always transfinite value and 4 steps of plane population intelligent optimization,
Realize track plan Intelligent Optimal Design；
Plane intelligent optimal control parameter includes design variable number, population scale, Optimizing Mode, variation
Zoom factor, crossover probability and evolution end condition；The number of design variable is relevant with the number of intersection point,
When only considering to optimize intersecting point coordinate, the number of design variable is 2 times of intersection point number, considers to optimize simultaneously
Intersecting point coordinate, radius and when front and back delaying long, the number of design variable is 5 times of intersection point number；Population is advised
Mould refers to be optimized the plane population scheme number being designed with, and is directly proportional to optimizing time-consuming length；Optimize
The mutation operation method used when pattern refers to plane population scheme optimization, based on current optimum optimization scheme and
The parent scheme randomly choosed is carried out；The size of variation zoom factor control design case variable variation scaling, root
Evolutionary process self-adaptative adjustment from big to small according to Optimized model；Crossover probability designs before and after referring to scheme variation
The probability of variable selection；Evolution end condition include plane maximum evolutionary generation, plane always transfinite value optimize
Threshold values and forced termination, when evolutionary generation reaches maximum, terminate evolving, when the most certain algebraically is optimum
The plane of scheme always transfinite value difference less than threshold values time, evolve terminate；
Initialize plane population scheme be according to original and automatic adjustment after track plan, each by disturbance
The value of design variable, generates initial plane population scheme by population scale；Straight-line intersection coordinate is according to straight line
Eyeball the Fitting Calculation in Duan Qianhou range of disturbance, circular curve radius is according to radius left and right range of disturbance meter
Calculating, front and back length of transition curve according to easement curve adjusting range disturbance and rounds；
The Calculation Plane population scheme value that always transfinites is to all initial plane population computation schemes object functions
Value, and target function value is ranked up, select current best fit plane scheme；
Plane population intelligent optimization refers to by plane population scheme is made a variation by Optimizing Mode circulation, handed over
Fork and selection operation, until meeting evolution end condition, it is thus achieved that plane optimal solution；Mutation operation is according to flat
The face value that always transfinites is found out when evolution is for the best fit plane scheme in population, optimal as in current population
Individuality, then randomly chooses two schemes in population, calculates the difference between the two scheme, utilizes
Difference value is multiplied by variation zoom factor to adjust current plane scheme；The operation that intersects determines according to crossover probability
The value mode of each planar design variable, after taking variation when the real number randomly generated is less than crossover probability
Planar design variable, take the planar design before variation when the real number randomly generated is more than crossover probability and become
Amount；Operation is selected to determine according to target function value and constraints, if formed after variation, intersection operation
The target function value of candidate plane scheme be better than current plane scheme, meanwhile, the pact of candidate plane scheme
Bundle condition meets requirement, then current plane scheme candidate plane scheme replaced, and otherwise retains current flat
Face scheme；
For two-wire circuit, after variation every time, intersection operation, the most automatically carry out two wires design, its flow process
Including obtaining original two wires planar design data, calculating distance between centers of tracks before and after slow long standard, calculated curve, join
The slow length in two wires and sweep, amendment two wires plane；Original two wires planar design data is from circuit original number
Obtain according in custom entities；Slow long standard includes recommending length of transition curve, minimum length of transition curve
General value is worth with difficulty, and combines an original slow long setting in two wires, determines that two wires length of transition curve is reasonable
Span；Before and after curve, distance between centers of tracks is determined according to the distance between centers of tracks at curve tandem section midpoint；
Two wires delay before and after the long and configuration of sweep considers curve slow long the most identical with curve before and after whether
Two factors of displacement, point 4 kinds of situations process: slow long identical before and after curve, not displacement, by with one heart
Circule method joins the slow length in two wires and sweep；Before and after curve, slow length is identical, and curve displacement uses non-concentric
Method joins radius, slow long by equal length configuration before and after two wires；Slow long difference before and after curve, not displacement, point
Yong front and back not delay long, slow long before and after using method of altering course with a concentric circle to determine two wires, calculate twice, then further according to
One two wires is slow long, with non-concentric circule method tentative calculation two wires radius；Slow long difference before and after curve, curve displacement,
The most respectively with slow long front and back, slow long before and after using method of altering course with a concentric circle to determine two wires, calculate twice, so
Afterwards according to distance between centers of tracks front and back, determine Widening on Curve value, slow long further according to a two wires, try by non-concentric circule method
Calculate two wires radius.
S7, update track plan design drawing
The design variable using plane optimal solution substitutes first original circuit planar design variable, updates track plan
Design drawing.
S8, outlet line plane optimizing contrast effect
According to the track plan after updating, recalculate plane contrast difference and the value that transfinites, then calculate also
Outlet line plane optimizing contrast effect；The plane that includes plane optimizing contrast effect transfinite node change number
And optimize the maximum on the right side of value and changing value, plane that transfinites of maximum on the left of percentage ratio, plane and transfinite value and changing
Value and plane always transfinite value and changing value.
This beneficial effect of the invention is: circuit initial data custom entities before being laid a railway track by structure, integrates
Original construction drawing circuit design data and bridge tunnel field data, data management is more efficient, comprehensively uses
Automatically adjusting and intelligent optimization algorithm, mathematical model is advanced, has reformed work on hand means, has effectively reduced
Manual calculation and repeatable operation, can significantly improve plane optimizing speed and designing quality, and model considers automatically
Two wires design lines spacing is widened, single two-pass use, and automatization and intelligence degree are high, practical, energy
Design efficiency is greatly improved, shortens the design cycle, there is obvious application value.
Accompanying drawing explanation
Fig. 1 be lay a railway track before the flow chart of circuit plane optimizing method for designing.
Description of symbols in figure:
S1, build lay a railway track before circuit initial data custom entities
S2, arrange plane optimizing control parameter
S3, automatically adjust track plan straight-line intersection
S4, automatically to adjust track plan curve slow long
S5, build track plan intelligent optimization mathematical model
S6, track plan Intelligent Optimal Design
S7, update track plan design drawing
S8, outlet line plane optimizing contrast effect
Detailed description of the invention
It is described with reference to the concrete technical scheme of the present invention.Shown in the flow chart of Fig. 1, the present invention relates to
And lay a railway track before the step of circuit plane optimizing method for designing include: build before laying a railway track circuit initial data from
Definition entity, arranges plane optimizing and controls parameter, automatically adjusts track plan straight-line intersection, automatically adjusts
Track plan curve is slow long, builds track plan intelligent optimization mathematical model, and track plan intelligent optimization sets
Meter, updates track plan design drawing, outlet line plane optimizing contrast effect.
S1, build lay a railway track before circuit initial data custom entities
Before laying a railway track, circuit initial data custom entities uses original construction drawing circuit design data and bridge tunnel real
Survey data builds, and circuit design data includes circuit design specification, circuit model title, chain rupture mileage number
According to, plane and straight line intersection point data, plane curve delay long data, superrelation on curve data, vertical section knick point
Data, bridge gap data, tunnel gap data, yard gap data, two-wire circuit includes original one
Line and two wires planar design data, two wires planar design data includes breaking in two-wire line model name, two wires
Chain mileage, two wires plane and straight line intersection point data, two wires plane curve delay long data and two wires curve surpasses
High data, bridge tunnel field data refers to that bridge tunnel surveys structure centre line data, by actual measurement structure centre line node
Composition, the corresponding measured profile of each node, each node includes marking mileage, coordinate and elevation,
Actual measurement structure centre line node uses polyline to connect, and draws actual measurement terminus mark at actual measurement terminus
Mileage.
S2, arrange plane optimizing control parameter
Plane optimizing controls parameter and includes gauge parameter and plane error standard, and plane error standard includes height
Build bridge and tunnel lateral direction allows maximum error；Optimal control parameter is on circuit initial data custom entities
It is configured by first original circuit mileage, corresponding with the change of bridge tunnel structure, including adding, editing and delete behaviour
Make；According to first original circuit mileage calculation plane coordinates position, mark controls parameter and mileage.
S3, automatically adjust track plan straight-line intersection
By fitting a straight line, adjust plane and straight line limit intersecting point coordinate；First, calculate straightway plane difference,
Plane difference calculates according to actual measurement structure centre line node correspondence, i.e. by eyeball coordinate projection to current flat
In the design lines of face, calculate continuous mileage, chain rupture sequence number, mark mileage and Coordinate of central line by intersection point, then
According to measured data, it is calculated each plane difference measuring point；Secondly, determine to be adjusted straight
Line segment falls, and is calculated each value that transfinites measuring point according to plane difference, according to plane error standard
Each straightway being invaded limit situation be analyzed, provide paragraph properties, paragraph properties includes the section of not transfiniting
Fall and the paragraph that transfinites, determine straight line paragraph to be adjusted；Again, computational analysis intersection point adjusts mode, hands over
Point adjusts and adjusts intersecting point coordinate exactly, including moving along front tangential direction, move along rear tangential direction, certainly
By adjusting and not adjusting, if straightway does not transfinites before intersection point, after intersection point, straightway transfinites, then along front cutting
Intersection point is moved in line direction, if straightway transfinites before intersection point, after intersection point, straightway does not transfinites, then along rear cutout
Intersection point is moved in line direction, if intersection point tandem section all transfinites, then moves freely intersection point, if intersection point
Tandem section does not transfinites, and does not adjusts；Then, fitting a straight line section, calculate position of intersecting point, for
Each straightway, according to the terminus mileage of straightway, obtains the actual measurement structure centre line in straightway
Data, plane difference and the value that transfinites, use the minimum of maximal possibility estimation to actual measurement structure centre line node
Square law carries out fitting a straight line, obtains the straight line parameter of matching, obtains new straight line, to new straight line
While ask friendship two-by-two, calculate the position of intersecting point made new advances, and be modified according to intersection point adjustment mode；?
After, adjust position of intersecting point, according to the adjustment mode of paragraph properties and intersection point, amendment track plan straight line is handed over
Point coordinates.
S4, automatically to adjust track plan curve slow long
According to circuit design specification, determine length of transition curve scope, by the principle that the value that transfinites is minimum, adjust
Whole length of transition curve；First, calculate flat vertical difference, after by curve segmentation, superrelation on curve array is set,
Calculate flat vertical difference；Secondly, determine curve paragraph to be adjusted, be calculated each according to plane difference
The individual value that transfinites measuring point, then each straightway and curved section being invaded limit situation is analyzed, and is given
Paragraph properties, paragraph properties includes do not transfinite paragraph and the paragraph that transfinites, determines curve paragraph to be adjusted；
Again, computational analysis curve delays long adjustment mode, and curve delays long adjustment mode and is divided into adjustment easement curve long
Spend and do not adjust, when 3 in Curve Segment has and transfinites, adjusting length of transition curve, when 3 in Curve Segment does not surpass
Limit, but tandem section has overrun condition, the most also adjusts length of transition curve, and other situation is the most uncomfortable
Whole；Then, acquisition standard delays long scope, and calculated curve is slow long, and curve delays long adjustment and must is fulfilled for line
Road design specification, length of transition curve is according to sweep, section passenger train designed driving speed and work
Journey condition determines, according to sweep, obtains the length of transition curve of standard recommendation, minimum easement curve
Length is typically worth and difficulty value, with minimum length of transition curve difficulty value as lower limit, slow according to recommend
Typically it is worth calculating upper limit with length of curve and minimum length of transition curve, determines easement curve adjusting range,
For each curve paragraph, according to easement curve adjusting range, by relaxing song before and after step-length loop modification
Line length, recalculates the value that transfinites, and by the principle that the value that transfinites is minimum, determines that optimized curve is slow long；
Finally, adjusting curve slow long, delay long adjustment mode according to paragraph properties and curve, amendment track plan delays
And length of curve；Automatically, after adjusting track plan straight-line intersection and the slow length of plane curve, formed and automatically adjust
After track plan.
S5, build track plan intelligent optimization mathematical model
Based on planar design variable, constraints and optimization aim, build track plan intelligent optimization mathematics
Model；Track plan is linear is divided into straight line, circular curve and three parts of easement curve, and easement curve divides again
For front easement curve and rear easement curve, planar design variable includes straight-line intersection coordinate, circular curve radius
Length of transition curve front and back, these variablees uniquely determine track plan midline position；Constraints refers to line
Specification that road planar design is to be met and control requirement, minimum including smallest curve radius constraint, circular curve
The constraint of length constraint, intermediate straight line minimum length, minimum length of transition curve constraint, terminus wiring constraint
Constraint is widened with two wires design lines spacing；Optimization aim refers to that track plan always transfinites value, by each eyeball
Place level transfinite value absolute value sum calculating, be the target judging track plan Intelligent Optimal Design effect
Functional value, the level value value peace right side of face that includes transfiniting on the left of plane that transfinites transfinites value, and target function value is
Little representing optimized effect is best.
S6, track plan Intelligent Optimal Design
On the basis of adjustment track plan straight-line intersection automatically and the automatic slow length of adjustment track plan curve,
Utilize track plan intelligent optimization mathematical model, by arranging plane intelligent optimal control parameter, initialization
Plane population scheme, Calculation Plane population scheme always transfinite value and 4 steps of plane population intelligent optimization,
Realize track plan Intelligent Optimal Design；
Plane intelligent optimal control parameter includes design variable number, population scale, Optimizing Mode, variation
Zoom factor, crossover probability and evolution end condition；The number of design variable is relevant with the number of intersection point,
When only considering to optimize intersecting point coordinate, the number of design variable is 2 times of intersection point number, considers to optimize simultaneously
Intersecting point coordinate, radius and when front and back delaying long, the number of design variable is 5 times of intersection point number；Population is advised
Mould refers to be optimized the plane population scheme number being designed with, and is directly proportional to optimizing time-consuming length；Optimize
The mutation operation method used when pattern refers to plane population scheme optimization, based on current optimum optimization scheme and
The parent scheme randomly choosed is carried out；The size of variation zoom factor control design case variable variation scaling, root
Evolutionary process self-adaptative adjustment from big to small according to Optimized model；Crossover probability designs before and after referring to scheme variation
The probability of variable selection；Evolution end condition include plane maximum evolutionary generation, plane always transfinite value optimize
Threshold values and forced termination, when evolutionary generation reaches maximum, terminate evolving, when the most certain algebraically is optimum
The plane of scheme always transfinite value difference less than threshold values time, evolve terminate；
Initialize plane population scheme be according to original and automatic adjustment after track plan, each by disturbance
The value of design variable, generates initial plane population scheme by population scale；Straight-line intersection coordinate is according to straight line
Eyeball the Fitting Calculation in Duan Qianhou range of disturbance, circular curve radius is according to radius left and right range of disturbance meter
Calculating, front and back length of transition curve according to easement curve adjusting range disturbance and rounds；
The Calculation Plane population scheme value that always transfinites is to all initial plane population computation schemes object functions
Value, and target function value is ranked up, select current best fit plane scheme；
Plane population intelligent optimization refers to by plane population scheme is made a variation by Optimizing Mode circulation, handed over
Fork and selection operation, until meeting evolution end condition, it is thus achieved that plane optimal solution；Mutation operation is according to flat
The face value that always transfinites is found out when evolution is for the best fit plane scheme in population, optimal as in current population
Individuality, then randomly chooses two schemes in population, calculates the difference between the two scheme, utilizes
Difference value is multiplied by variation zoom factor to adjust current plane scheme；The operation that intersects determines according to crossover probability
The value mode of each planar design variable, after taking variation when the real number randomly generated is less than crossover probability
Planar design variable, take the planar design before variation when the real number randomly generated is more than crossover probability and become
Amount；Operation is selected to determine according to target function value and constraints, if formed after variation, intersection operation
The target function value of candidate plane scheme be better than current plane scheme, meanwhile, the pact of candidate plane scheme
Bundle condition meets requirement, then current plane scheme candidate plane scheme replaced, and otherwise retains current flat
Face scheme；
For two-wire circuit, after variation every time, intersection operation, the most automatically carry out two wires design, its flow process
Including obtaining original two wires planar design data, calculating distance between centers of tracks before and after slow long standard, calculated curve, join
The slow length in two wires and sweep, amendment two wires plane；Original two wires planar design data have been reacted two wires and have been set
The correlation principle of meter, is by the important references of new two wires design, from the self-defined reality of circuit initial data
Body obtains；Slow long standard includes recommending length of transition curve, minimum length of transition curve are typically worth and are stranded
Difficult value, and combine an original slow long setting in two wires, determine two wires length of transition curve reasonable value scope,
Ensure not omit valuable scheme when optimizing；Before and after curve, distance between centers of tracks is according to curve tandem section midpoint
Distance between centers of tracks be determined；
Two wires delay before and after the long and configuration of sweep considers curve slow long the most identical with curve before and after whether
Two factors of displacement, point 4 kinds of situations process: slow long identical before and after curve, not displacement, by with one heart
Circule method joins the slow length in two wires and sweep；Before and after curve, slow length is identical, and curve displacement uses non-concentric
Method joins radius, slow long by equal length configuration before and after two wires；Slow long difference before and after curve, not displacement, point
Yong front and back not delay long, slow long before and after using method of altering course with a concentric circle to determine two wires, calculate twice, then further according to
One two wires is slow long, with non-concentric circule method tentative calculation two wires radius；Slow long difference before and after curve, curve displacement,
The most respectively with slow long front and back, slow long before and after using method of altering course with a concentric circle to determine two wires, calculate twice, so
Afterwards according to distance between centers of tracks front and back, determine Widening on Curve value, slow long further according to a two wires, try by non-concentric circule method
Calculate two wires radius.
S7, update track plan design drawing
The design variable using plane optimal solution substitutes first original circuit planar design variable, updates track plan
Design drawing.
S8, outlet line plane optimizing contrast effect
According to the track plan after updating, recalculate plane contrast difference and the value that transfinites, then calculate also
Outlet line plane optimizing contrast effect；The plane that includes plane optimizing contrast effect transfinite node change number
And optimize the maximum on the right side of value and changing value, plane that transfinites of maximum on the left of percentage ratio, plane and transfinite value and changing
Value and plane always transfinite value and changing value.
Claims (4)
1. one kind lay a railway track before circuit plane optimizing method for designing, it is characterized in that, comprise the following steps: build circuit initial data custom entities (S1) before laying a railway track, plane optimizing is set and controls parameter (S2), automatically track plan straight-line intersection (S3) is adjusted, automatically track plan curve slow long (S4) is adjusted, build track plan intelligent optimization mathematical model (S5), track plan Intelligent Optimal Design (S6), update track plan design drawing (S7), outlet line plane optimizing contrast effect (S8)；
Described structure lay a railway track before circuit initial data custom entities (S1), original construction drawing circuit design data and bridge tunnel field data is used to build, circuit design data includes circuit design specification, circuit model title, chain rupture mileage, plane and straight line intersection point data, plane curve delays long data, superrelation on curve data, vertical section knick point data, bridge gap data, tunnel gap data, yard gap data, two-wire circuit includes an original line and two wires planar design data, bridge tunnel field data refers to that bridge tunnel surveys structure centre line data, it is made up of actual measurement structure centre line node, the corresponding measured profile of each node, each node includes marking mileage, coordinate and elevation, actual measurement structure centre line node uses polyline to connect, actual measurement terminus mark mileage is drawn at actual measurement terminus；
The described plane optimizing that arranges controls parameter (S2), and plane optimizing controls parameter and includes gauge parameter and plane error standard, and plane error standard includes that overpass and tunnel lateral direction allow maximum error；Optimal control parameter is configured by first original circuit mileage on circuit initial data custom entities, corresponding with the change of bridge tunnel structure, including adding, editing and deletion action；According to first original circuit mileage calculation plane coordinates position, mark controls parameter and mileage；
Described automatic adjustment track plan straight-line intersection (S3), refer to, by fitting a straight line, adjust plane and straight line limit intersecting point coordinate；First, calculate straightway plane difference, plane difference calculates according to actual measurement structure centre line node correspondence, i.e. by eyeball coordinate projection to current plane design lines, continuous mileage, chain rupture sequence number, mark mileage and Coordinate of central line is calculated by intersection point, then according to measured data, it is calculated each plane difference measuring point；Secondly, determine straight line paragraph to be adjusted, it is calculated each value that transfinites measuring point according to plane difference, according to plane error standard, each straightway is invaded limit situation to be analyzed, provide paragraph properties, paragraph properties includes do not transfinite paragraph and the paragraph that transfinites, and determines straight line paragraph to be adjusted；Again, computational analysis intersection point adjusts mode, and intersection point adjusts and adjusts intersecting point coordinate exactly, including moving along front tangential direction, move along rear tangential direction, freely adjusting and do not adjust；Then, fitting a straight line section, calculates position of intersecting point, for each straightway, terminus mileage according to straightway, obtain actual measurement structure centre line data, plane difference and the value that transfinites in straightway, use the method for least square of maximal possibility estimation to carry out fitting a straight line actual measurement structure centre line node, obtain the straight line parameter of matching, obtain new straight line, new straight line is asked two-by-two friendship, calculates the position of intersecting point made new advances, and be modified according to intersection point adjustment mode；Finally, adjust position of intersecting point, according to the adjustment mode of paragraph properties and intersection point, revise track plan straight-line intersection coordinate；
Slow long (the S of described automatic adjustment track plan curve4), refer to, according to circuit design specification, determine length of transition curve scope, by the principle that the value that transfinites is minimum, adjust length of transition curve；First, calculate flat vertical difference, after superrelation on curve array is set by curve segmentation, calculate flat vertical difference；Secondly, determine curve paragraph to be adjusted, be calculated each value that transfinites measuring point according to plane difference, then each straightway and curved section are invaded limit situation to be analyzed, providing paragraph properties, paragraph properties includes do not transfinite paragraph and the paragraph that transfinites, and determines curve paragraph to be adjusted；Again, computational analysis curve delays long adjustment mode, and curve delays long adjustment mode and is divided into adjustment length of transition curve and do not adjusts；Then, acquisition standard delays long scope, calculated curve is slow long, according to sweep, obtain the length of transition curve of standard recommendation, minimum length of transition curve is typically worth and difficulty value, with minimum length of transition curve difficulty value as lower limit, calculating upper limit typically it is worth according to the length of transition curve recommended and minimum length of transition curve, determine easement curve adjusting range, for each curve paragraph, according to easement curve adjusting range, by length of transition curve before and after step-length loop modification, recalculate the value that transfinites, by the principle that the value that transfinites is minimum, determine that optimized curve is slow long；Finally, adjust curve slow long, delay long adjustment mode according to paragraph properties and curve, revise track plan length of transition curve；
Described structure track plan intelligent optimization mathematical model (S5), refer to, based on planar design variable, constraints and optimization aim, build track plan intelligent optimization mathematical model；Track plan is linear is divided into straight line, circular curve and three parts of easement curve, easement curve is divided into again front easement curve and rear easement curve, planar design variable includes straight-line intersection coordinate, circular curve radius and front and back length of transition curve, and these variablees uniquely determine track plan midline position；Constraints refers to that track plan designs specification to be met and controls requirement, widens constraint including smallest curve radius constraint, the constraint of circular curve minimum length, the constraint of intermediate straight line minimum length, minimum length of transition curve constraint, terminus wiring constraint and two wires design lines spacing；Optimization aim refers to that track plan always transfinites value, by the level of each eyeball transfinite value absolute value sum calculate, it it is the target function value judging track plan Intelligent Optimal Design effect, the level value value peace right side of face that includes transfiniting on the left of plane that transfinites transfinites value, and target function value minimum representing optimized effect is best；
Described track plan Intelligent Optimal Design (S6), finger is on the basis of adjustment track plan straight-line intersection automatically and the automatic slow length of adjustment track plan curve, utilize track plan intelligent optimization mathematical model, by arranging plane intelligent optimal control parameter, initializing plane population scheme, Calculation Plane population scheme and always transfinite value and 4 steps of plane population intelligent optimization, it is achieved track plan Intelligent Optimal Design；Plane intelligent optimal control parameter includes design variable number, population scale, Optimizing Mode, variation zoom factor, crossover probability and evolution end condition；Initialize plane population scheme be according to original and automatic adjustment after track plan, by the value of each design variable of disturbance, by population scale generation initial plane population scheme；The Calculation Plane population scheme value that always transfinites is to all initial plane population computation schemes target function values, and is ranked up target function value, selects current best fit plane scheme；Plane population intelligent optimization refers to by making a variation, intersect and select operation to plane population scheme by Optimizing Mode circulation, until meeting evolution end condition, it is thus achieved that plane optimal solution；
Described renewal track plan design drawing (S7), uses the design variable of plane optimal solution to substitute first original circuit planar design variable, updates track plan design drawing；
Described outlet line plane optimizing contrast effect (S8), according to the track plan after updating, recalculate plane contrast difference and the value that transfinites, then calculate and outlet line plane optimizing contrast effect；The plane that includes plane optimizing contrast effect transfinites node change number and optimize the maximum on the right side of value and changing value, plane that transfinites of maximum on the left of percentage ratio, plane and transfinite value and changing value and plane always transfinites value and changing value.
Automatic adjustment track plan straight-line intersection (S the most according to claim 13), it is characterized in that, if straightway does not transfinites before intersection point, after intersection point, straightway transfinites, then move intersection point along front tangential direction, if straightway transfinites before intersection point, after intersection point, straightway does not transfinites, then move intersection point along rear tangential direction, if intersection point tandem section all transfinites, then move freely intersection point, if intersection point tandem section does not transfinites, do not adjust.
Slow long (the S of automatic adjustment track plan curve the most according to claim 14), it is characterised in that when 3 in Curve Segment has and transfinites, adjusting length of transition curve, when 3 in Curve Segment does not transfinite, but tandem section has overrun condition, the most also adjusts length of transition curve, and other situation does not adjusts；Curve delays long adjustment and must is fulfilled for circuit design specification, and length of transition curve determines according to sweep, section passenger train designed driving speed and engineering specifications.
Track plan Intelligent Optimal Design (S the most according to claim 16), initialize plane population scheme be according to original and automatic adjustment after track plan, by the value of each design variable of disturbance, by population scale generation initial plane population scheme；Straight-line intersection coordinate calculates according to radius left and right range of disturbance according to the eyeball the Fitting Calculation in range of disturbance before and after straightway, circular curve radius, and front and back length of transition curve according to easement curve adjusting range disturbance and rounds；Operation is selected to determine according to target function value and constraints, if the target function value of the candidate plane scheme formed after variation, intersection operation is better than current plane scheme, simultaneously, the constraints of candidate plane scheme meets requirement, then current plane scheme candidate plane scheme is replaced, otherwise retain current plane scheme；For two-wire circuit, every time variation, intersecting after operation, the most automatically carry out two wires design, its flow process includes obtaining original two wires planar design data, calculates distance between centers of tracks before and after slow long standard, calculated curve, joins that two wires is slow long and sweep, amendment two wires plane.
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