CN102592028A - Method for optimizing setting position and number of horizontal passageway on lane side - Google Patents

Method for optimizing setting position and number of horizontal passageway on lane side Download PDF

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Publication number
CN102592028A
CN102592028A CN2012100435273A CN201210043527A CN102592028A CN 102592028 A CN102592028 A CN 102592028A CN 2012100435273 A CN2012100435273 A CN 2012100435273A CN 201210043527 A CN201210043527 A CN 201210043527A CN 102592028 A CN102592028 A CN 102592028A
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interconnection
zone
vehicle
wish
limit
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王晓华
白子建
刘治国
马红伟
钟石泉
郑利
赵巍
王海燕
张磊
严西华
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Tianjin Municipal Engineering Design and Research Institute
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Abstract

The invention relates to the technical field of road design. For providing a specific method for carrying out guidance on the setting of position and number of a horizontal passageway on a lane side in a major transportation hub, the invention adopts the following technical scheme that: in a method for optimizing the setting position and number of a horizontal passageway on a lane side, the two-dimensional cellular automaton model simulation is taken as a platform, through carrying out analysis on the traffic flow characteristics of a horizontal passageway carrying a lane side design form and carrying out detailed description on the various influences of target functions of stopping models, stopping rules, cells of horizontal passageways and turning paths, a target is subjected to integrated simulation so as to obtain the position and number optimization data of passageway setting. The method disclosed by the invention is mainly applied to road designs.

Description

Limit, track interconnection is provided with position and quantity optimization method
Technical field
The invention belongs to the highway layout technical field, especially relate to limit, track interconnection position and quantity optimization method are set.
Background technology
In order to satisfy growing modern trip requirements, large-scale transport hub is built in each city in succession.As the distinctive means of transportation in transport hub, limit, track Research on Related Problems receives the attention of Chinese scholars day by day.Programming and distribution and correlative study have just been begun abroad to limit, large-scale pivoting system track facility as far back as the sixties in 20th century.In recent years, along with based on the going deep into of some theoretical microscopic behavior traffic analysis model investigations of traffic behavior, some urban transportation microcosmic Simulation systems have been developed.On the flow simulations that mainly is placed on interior passenger of hinge and luggage of these research centers of gravity, also few to the simulation study of outer roadside of hinge and roadway element.Domestic aspect is in the theory support for the formal shortage of being provided with of limit, track system.Especially calculate estimation according to the actual use experience of design data combination in the past often for the position and the quantity of interconnection setting, shortage makes interconnection that the position is set and quantity reaches optimized method.
Can know to have following characteristics to the prior art of the research on limit, large-scale hinge track from existing pertinent literature reading analysis:
(1) mainly be to the Research of Dynamic Analysis between each means of transportation of hinge to the research direction on limit, large-scale hinge track in the past; Even the research of the methods that are provided with to the track on limit, track is not enough; Also be the estimated value that draws through experience wherein, lack the definite theoretical method and the support of data the setting that limit, interconnection track is arranged.
(2) in the software of having developed, main emulation technology is mostly based on some theoretical microscopic behavior traffic analysis models of traffic behavior.Application is studied based on the cellular automaton of incorporate integrated emulation environment and still is in elementary developing stage.
Summary of the invention
The present invention is intended to solve the deficiency that overcomes prior art, provides clear and definite method that the setting of interconnection position, limit, track, large-scale transport hub and quantity is instructed.For achieving the above object; The technical scheme that the present invention takes is that limit, track interconnection is provided with position and quantity optimization method, adopts the emulation of two dimensional cellular automaton modeling as platform; Through comprising the analysis of limit, the track design form traffic stream characteristics that has interconnection; Stop the detailed description of the multiple influence of simulated target function, the cellular of stopping rule, interconnection, turning path, target is carried out integrated emulation, draw passage position and quantity optimization data are set.
The analysis of limit, the track design form traffic stream characteristics of interconnection is meant that the limit is provided with the situation of double stopway.
Stopping the simulated target function is meant: make x eExpression vehicle current location, x eThe get off start position of the station entrance direction of traffic that the guest requires of expression, D eThe expression station entrance width that the guest requires of getting off, the driver changes the wish function and can be expressed as:
v n d ( k , x c , x e ) = random ( 0 , &delta; 4 , k ) if x c > d s n ( k ) + x e 1 - [ ( x c - x e - d s n ( k ) + D e ) / ( x e + d s n ( k ) - D e ) ] &lambda; 4 if x e - D e + d s n ( k ) < x c &le; d s n ( k ) + x e 1 if x c &le; x e - D e + d s n ( k )
v w d ( k , x c , x e ) = random ( 0 , &delta; 5 , k ) if x c > d s w ( k ) + x e 1 - [ ( x c - x e - d s w ( k ) + D e ) / ( x e + d s w ( k ) - D e ) ] &lambda; 5 if x e - D e + d s w ( k ) < x c &le; d s w ( k ) + x e 1 if x c &le; x e - D e + d s w ( k ) In the following formula, δ 4, kRepresent k class driver on the limit, track that has interconnection inboard non-change the zone change the wish upper limit, relevant with driver's style and current traffic condition; λ 4What be illustrated in that the inboard target in the limit, track that has interconnection changes the zone changes the wish coefficient; Change to the wish of changing of fast lane
Figure BDA0000138060710000021
Be driver's type k, vehicle current location x c, the station entrance start position x that requires of the guest that gets off eFunction; Random (0, δ 4, k) be illustrated in the interval (0, δ 4, k) wish that produces at random;
Figure BDA0000138060710000022
Represent that inboard experience is changed and stop distance;
Figure BDA0000138060710000023
The position of expression is the inboard non-zone of changing;
Figure BDA0000138060710000024
The position of expression is that inboard target is changed the zone;
Figure BDA0000138060710000025
Zone, δ are changed for inboard punishment in the position of expression 5, kRepresent k class driver in limit, the track outside that has interconnection non-change the zone change the wish upper limit, relevant with driver's style and current traffic condition; λ 5What be illustrated in that limit, the track outside target that has interconnection changes the zone changes the wish coefficient; Change to the wish of changing of kerb lane
Figure BDA0000138060710000026
Be driver's type k, vehicle current location x c, the station entrance start position x that requires of the guest that gets off eFunction; Random (0, δ 5, k) be illustrated in the interval (0, δ 5, k) wish that produces at random;
Figure BDA0000138060710000027
Expression outside experience is changed and is stopped distance;
Figure BDA0000138060710000028
The position of expression is the non-zone of changing, the outside; The zone is changed for outside target in the position of expression;
Figure BDA00001380607100000210
The position of expression is that the zone is changed in outside punishment;
Get off the changing the wish function and can be expressed as of passenger:
v n p ( h , x c , x e ) = random ( 0 , &delta; 6 , k ) if x c > d s n ( k ) + x e 1 - [ ( x c - x e - d s n ( k ) + D e ) / ( x e + d s n ( k ) - D e ) ] &lambda; 6 if x e - D e + d s n ( k ) < x c &le; d s n ( k ) + x e 1 if x c &le; x e - D e + d s n ( k )
v w p ( h , x c , x e ) = random ( 0 , &delta; 7 , k ) if x c > d s w ( k ) + x e 1 - [ ( x c - x e - d s w ( k ) + D e ) / ( x e + d s w ( k ) - D e ) ] &lambda; 7 if x e - D e + d s w ( k ) < x c &le; d s w ( k ) + x e 1 if x c &le; x e - D e + d s w ( k )
In the following formula, δ 6, kRepresent the h class get off the passenger on the limit, track that has interconnection inboard non-change the zone change the wish upper limit, relevant with the passenger's that gets off style and current traffic condition; λ 6What be illustrated in that the inboard target in the limit, track that has interconnection changes the zone changes the wish coefficient; Random (0, δ 6, k) be illustrated in the interval (0, δ 6, k) wish that produces at random; δ 7, kRepresent the h class get off the passenger in limit, the track outside that has interconnection non-change the zone change the wish upper limit, relevant with the passenger's that gets off style and current traffic condition; λ 7What be illustrated in that limit, the track outside target that has interconnection changes the zone changes the wish coefficient; Random (0, δ 7, k) be illustrated in the interval (0, δ 7, k) wish that produces at random;
Objective function is stopped in the inboard stop of driver objective function, the driver outside, objective function is stopped outside stopping objective function and passenger in the passenger inboard, and the wish value of changing that these four objective functions are corresponding is used v i, i=1,2,3,4 represent, the inboard probability of stopping the zone in zone, stop zone, the driver outside, passenger inboard stop zone and the passenger outside of stopping of then corresponding driver is used p i(v i), i=1,2,3,4 expressions, the selection probability after its game:
p i ( v i ) = v i &Sigma; j = 1 4 v j , i = 1,2,3,4
V in the following formula iBe current location, driver's type, the station entrance start position of passenger's requirement and the function of passenger type, be actually along with vehicle operating changes, and final the selection be the payoff between these four wish values.
The cellular of interconnection is meant: to adopting two-dimentional cellular to divide in limit, track interconnection and the long scope of a left and right motorbus thereof; Other road area adopts the one dimension cellular; After being dispersed by two-dimentional cellular in the zone, need in the emulation to adopt cellular quantity and cellular position to describe the running orbit of vehicle.
The emulation rule of turning path is:
1) emulation constantly t roll the interconnection wheel of vehicle away from and the lane line angle is β (t), the vehicle body deflection angle does The speed of pivoted wheels on vehicle is V q(t), forefront vehicle body corner location is l (x (t), y (t));
2)t：＝t+1；
3) if l (x (t), y (t)) has got into runway, then β (t)=max (β (t)-δ d, 0), δ dExpression front-wheel revolution step-length changes 5;
4) if l (x (t), y (t)) does not get into runway, then β (t)=β (t)+δ a, δ aExpression front-wheel steer step-length;
5) if
Figure BDA0000138060710000032
V then B(t)=v B(t)+1, The top speed of going for interconnection;
6) continuity current state is estimated t+2 constantly, and the cellular of current vehicle and adjacent vehicle takies situation;
7) if t+2 moment current vehicle and other vehicle all do not have the overlapping situation of cellular that takies, change 2; Otherwise continue;
8) if t+2 constantly current vehicle only to take cellular overlapping with adjacent vehicle 1, v then B(t) :=v B(t)-1, change 6;
9) if t+2 constantly current vehicle only to take cellular overlapping with adjacent vehicle 2,5, β (t)=β (t)+δ then d, change 6;
10) if t+2 constantly current vehicle only to take cellular overlapping with adjacent vehicle 3,4, β (t)=β (t)-δ then a, change 6;
11) to take cellular overlapping if many places appear in t+2 constantly, then v B(t)=0, change 6;
12) turning emulation finishes.
Technical characterstic of the present invention and effect:
1) the track edge lengths that has interconnection can only be estimated through experience so far less than the definite method that quantizes.The present invention is through multiple influences such as careful portrayal vehicle at rest objective function, stop rule, turning paths, and it is integrated to adopt cellular automaton intelligence body to carry out, and has initiative.
2) in practical application, this present invention's method data acquisition is comparatively simple, if predict lane limit flow and vehicle ratio, and these data have possessed when terminal designs, so the actual use value of emulation mode of the present invention is bigger.
Description of drawings
Fig. 1 has limit, the track simulating scenes synoptic diagram of interconnection.
Traffic flow spacetime diagram during Fig. 2 interconnection.
Traffic flow spacetime diagram during Fig. 3 interconnection.
Traffic flow spacetime diagram during Fig. 4 interconnection.
Traffic flow spacetime diagram during Fig. 5 interconnection.
Traffic flow spacetime diagram during Fig. 6 interconnection.
Traffic flow spacetime diagram during Fig. 7 interconnection.
Delay time at stop under Fig. 8 different transverse channels number.
Fig. 9 traffic conflict synoptic diagram.
Figure 10 will have the stop simulated target zone, limit, track of interconnection and divide.
Figure 11 interconnection and upstream region two dimension cellular are divided.
Vehicle location and cellular presentation graphs in Figure 12 oversize vehicle.
The signal of Figure 13 motorbus interconnection turning cellular.
Figure 14 vehicle is at interconnection turning position synoptic diagram
Embodiment
1.1 have limit, the track design form traffic stream characteristics analysis of interconnection
Have under limit, the track design form of interconnection; Except normally changing; Car sidecar road vehicle can also get into runway through interconnection, has reduced owing to outer track blocks up making the inside lane vehicle can not get into the probability of runway, and its traffic conflict synoptic diagram is as shown in Figure 9.
Annotate: m+1, m, m-1 are the runway middle vehicle that goes.
N+4, n-1, n-3 are the outside stopway vehicle of dropping off the guests that stops.
N+3, n+1, n are the inboard stopway vehicle of dropping off the guests that stops.
N+2 is that inboard stopway vehicle sails runway into through interconnection.
N-2 is that inboard stopway vehicle prepares to get into interconnection.
N-1 is that outside stopway vehicle sails the runway car of preparing to interweave into.
As shown in Figure 9, when being provided with interconnection, owing to can not stop in the interconnection position; Make the fast lane vehicle can not stopped by the kerb lane vehicle fully and can only follow the car that speeds on; Can improve the road speed of fast lane, but this passage can take certain space, particularly fast lane turnover runway convenience is good more; Needed number of channels is also many more, so this form need be carried out adaptability design and optimization under certain transportation condition.
Stop the simulated target function 1.2 have the limit, track of interconnection
Have in limit, the track design form of interconnection, it is different for driver and passenger's influence that the track is stopped in the interior outside.Stop the track in the outside, vehicle changes to more easily to be stopped and the entering runway that swaps out, and stop track vehicle can not get into runway owing to adjacent vehicle hinders in the outside; And if vehicle will get into fast lane and start from inside lane and to carry out runway; Then need carry out changing for twice, particularly work as kerb lane and block up, whether inboard vehicle changes to runway and receives front vehicles and exist interconnection greatly to influence; Therefore as far as the driver, its desirable selection is a kerb lane.For the guest that gets off; Need pass fast lane after kerb lane is got off and to get into terminal,, therefore in crossing process, also have the conflict of people's car the pedestrian owing to generally do not have control signal under this limit, track design form; Therefore as far as the guest that gets off, its desirable selection is a fast lane.Owing to there is above-mentioned contradiction; Therefore need and get off the driver and form game equilibrium between the guest; Because oversize vehicle is generally the public service-oriented vehicle, private car is is generally met and sent off and is familiar with the crowd, and it is set to guest's priority level the present invention; Be that the driver also preferentially selects fast lane to stop, only consider the taximan and the game relation between the guest of getting off.The stop simulated target zone, limit, track that will have interconnection in the model of the present invention is divided, and is shown in figure 10.
Meaning of parameters among Figure 10 is stopped simulated target area dividing parameter basically identical with the limit, track that has middle express passway; The present invention does not give unnecessary details; Only the inconsistent part of its parking objective function is described, show that mainly the taxi stop has in limit, the track model of interconnection.
Taxi is stopped and is had in limit, the track model of interconnection, and objective function is divided into driver's objective function and passenger's objective function, finally stops track and position and is payoff between the two.Make x cExpression vehicle current location, x eThe get off start position of the station entrance direction of traffic that the guest requires of expression, D eThe expression station entrance width that the guest requires of getting off.
The driver changes the wish function and can be expressed as:
v n d ( k , x c , x e ) = random ( 0 , &delta; 4 , k ) if x c > d s n ( k ) + x e 1 - [ ( x c - x e - d s n ( k ) + D e ) / ( x e + d s n ( k ) - D e ) ] &lambda; 4 if x e - D e + d s n ( k ) < x c &le; d s n ( k ) + x e 1 if x c &le; x e - D e + d s n ( k )
v w d ( k , x c , x e ) = random ( 0 , &delta; 5 , k ) if x c > d s w ( k ) + x e 1 - [ ( x c - x e - d s w ( k ) + D e ) / ( x e + d s w ( k ) - D e ) ] &lambda; 5 if x e - D e + d s w ( k ) < x c &le; d s w ( k ) + x e 1 if x c &le; x e - D e + d s w ( k )
In the following formula, δ 4, kRepresent k class driver on the limit, track that has interconnection inboard non-change the zone change the wish upper limit, relevant with driver's style and current traffic condition; λ 4What be illustrated in that the inboard target in the limit, track that has interconnection changes the zone changes the wish coefficient; Change to the wish of changing of fast lane Be driver's type k, vehicle current location x c, the station entrance start position x that requires of the guest that gets off eFunction; Random (0, δ 4, k) be illustrated in the interval (0, δ 4, k) wish that produces at random; The position of expression is the inboard non-zone of changing;
Figure BDA0000138060710000055
The position of expression is that inboard target is changed the zone;
Figure BDA0000138060710000056
The zone is changed for inboard punishment in the position of expression.δ 5, kRepresent k class driver in limit, the track outside that has interconnection non-change the zone change the wish upper limit, relevant with driver's style and current traffic condition; λ 5What be illustrated in that limit, the track outside target that has interconnection changes the zone changes the wish coefficient; Change to the wish of changing of kerb lane Be driver's type k, vehicle current location x c, the station entrance start position x that requires of the guest that gets off eFunction; Random (0, δ 5, k) be illustrated in the interval (0, δ 5, k) wish that produces at random;
Figure BDA0000138060710000058
The position of expression is the non-zone of changing, the outside; The zone is changed for outside target in the position of expression;
Figure BDA00001380607100000510
The position of expression is that the zone is changed in outside punishment.
Get off the changing the wish function and can be expressed as of passenger:
v n p ( h , x c , x e ) = random ( 0 , &delta; 6 , k ) if x c > d s n ( k ) + x e 1 - [ ( x c - x e - d s n ( k ) + D e ) / ( x e + d s n ( k ) - D e ) ] &lambda; 6 if x e - D e + d s n ( k ) < x c &le; d s n ( k ) + x e 1 if x c &le; x e - D e + d s n ( k )
v w p ( h , x c , x e ) = random ( 0 , &delta; 7 , k ) if x c > d s w ( k ) + x e 1 - [ ( x c - x e - d s w ( k ) + D e ) / ( x e + d s w ( k ) - D e ) ] &lambda; 7 if x e - D e + d s w ( k ) < x c &le; d s w ( k ) + x e 1 if x c &le; x e - D e + d s w ( k ) In the following formula, δ 6, kRepresent the h class get off the passenger on the limit, track that has interconnection inboard non-change the zone change the wish upper limit, relevant with the passenger's that gets off style and current traffic condition; λ 6What be illustrated in that the inboard target in the limit, track that has interconnection changes the zone changes the wish coefficient; Change to the wish of changing of fast lane
Figure BDA00001380607100000513
Be get off passenger type k, vehicle current location x e, the station entrance start position x that requires of the guest that gets off eFunction; Random (0, δ 6, k) be illustrated in the interval (0, δ 6, k) wish that produces at random;
Figure BDA0000138060710000061
The position of expression is the inboard non-zone of changing;
Figure BDA0000138060710000062
The position of expression is that inboard target is changed the zone;
Figure BDA0000138060710000063
The zone is changed for inboard punishment in the position of expression.δ 7, kRepresent the h class get off the passenger in limit, the track outside that has interconnection non-change the zone change the wish upper limit, relevant with the passenger's that gets off style and current traffic condition; λ 7What be illustrated in that limit, the track outside target that has interconnection changes the zone changes the wish coefficient; Change to the wish of changing of kerb lane
Figure BDA0000138060710000064
Be get off passenger type k, vehicle current location x c, the station entrance start position x that requires of the guest that gets off eFunction; Random (0, δ 7, k) be illustrated in the interval (0, δ 7, k) wish that produces at random;
Figure BDA0000138060710000065
The position of expression is the non-zone of changing, the outside;
Figure BDA0000138060710000066
The zone is changed for outside target in the position of expression;
Figure BDA0000138060710000067
The position of expression is that the zone is changed in outside punishment.
Stop selective rule 1.3 have the limit, track of interconnection
Taxi is stopped and is had in limit, the track model of interconnection; There are four and change the regional aim function; Stop objective function outside being respectively driver inboard stop objective function, driver outside stop objective function, passenger's inboard stop objective function and passenger; Be preamble get off the passenger change wish function and driver change the wish function, be convenient statement, the present invention's wish value of changing that these four objective functions are corresponding is used v i, i=1,2,3,4 expressions.The inboard probability of stopping the zone in zone, stop zone, the driver outside, passenger inboard stop zone and the passenger outside of stopping of then corresponding driver is used p i(v i), i=1,2,3,4 expressions, the selection probability after its game:
p i ( v i ) = v i &Sigma; j = 1 4 v j , i = 1,2,3,4
V in the following formula iBe current location, driver's type, the station entrance start position of passenger's requirement and the function of passenger type, be actually along with vehicle operating changes, and final the selection be the payoff between these four wish values.
1.4 the cellular of interconnection is described
To adopting two-dimentional cellular to divide in limit, track interconnection and the long scope of a left and right motorbus thereof, other road area adopts the one dimension cellular.Because the existence of two-dimentional cellular can be carried out careful description to behaviors such as motorbus turnings near interconnection, and the one dimension cellular of other part can make emulation keep fast speed.Interconnection and upstream region two dimension cellular are divided shown in figure 11.
Among Figure 11, L hExpression interconnection length, L kExpression is made as 1 motorbus length near the upper reaches motorbus turning area length of field of interconnection among the present invention.The length and width of each two-dimentional cellular are 1.25 meters, and one dimension cellular length is 1.25 meters.Because the motorbus width generally is no more than 2.5 meters, so the cellular number that vehicle width occupies is no more than 3 at most, a track just is divided into 3 song cellulars for 3.75 meters.After being dispersed by two-dimentional cellular in the zone, need in the emulation to adopt cellular quantity and cellular position to describe the running orbit of vehicle, Figure 12 is vehicle location and a cellular presentation graphs in the oversize vehicle.
1.5 lateral direction of car passage turning rule
Figure 13 is the signal of motorbus interconnection turning cellular; When vehicle is turned at interconnection; Therefore operations such as adjacent vehicle location and signal can influence the turning to of current vehicle, brake, acceleration need carry out perception and decision operation space and risk to adjacent vehicle location and signal.The present invention adopts like the 1-5 position vehicle among Figure 14 as adjacent vehicle.
Vehicle is sailed the emulation rule of turning at interconnection:
1) emulation constantly t roll the interconnection wheel of vehicle away from and the lane line angle is β (t), the vehicle body deflection angle does
Figure BDA0000138060710000071
The speed of pivoted wheels on vehicle is V q(t), forefront vehicle body corner location is l (x (t), y (t)).
2)t：＝t+1；
3) if l (x (t), y (t)) has got into runway, then β (t)=max (β (t)-δ d, 0), δ dExpression front-wheel revolution step-length changes 5;
4) if l (x (t), y (t)) does not get into runway, then β (t)=β (t)+δ a, δ aExpression front-wheel steer step-length;
5) if
Figure BDA0000138060710000072
V then B(t)=v B(t)+1, The top speed of going for interconnection;
6) continuity current state is estimated t+2 constantly, and the cellular of current vehicle and adjacent vehicle takies situation;
7) if t+2 moment current vehicle and other vehicle all do not have the overlapping situation of cellular that takies, change 2; Otherwise continue;
8) if t+2 constantly current vehicle only to take cellular overlapping with adjacent vehicle 1, v then B(t) :=v B(t)-1, change 6;
9) if t+2 constantly current vehicle only to take cellular overlapping with adjacent vehicle 2,5, β (t)=β (t)+δ then d, change 6;
10) if t+2 constantly current vehicle only to take cellular overlapping with adjacent vehicle 3,4, β (t)=β (t)-δ then a, change 6;
11) to take cellular overlapping if many places appear in t+2 constantly, then v B(t)=0, change 6;
12) turning emulation finishes.
1.6 have limit, the track traffic capacity traffic simulation of interconnection
1.6.1 simulated environment setting
Stopway and runway respectively are set to two in the simulating scenes, 150 meters of track edge lengths, and three entry positions are shown in the following figure, wherein L e=L b/ 2=25 rice, runway speed limit are 20 kilometers/hour, and berthing time is defined as 2 seconds/people of large car, taxi 30 seconds, private car: 18 seconds.Motorbus, private car and taxi ratio were respectively 1: 1: 1.Interconnection and upstream region adopt two-dimentional cellular to divide, and length and width respectively are 1.25 meters, and other zone adopts the one dimension cellular that the track is divided, and each cellular length is 1.25 meters.It is as shown in Figure 1 that the aviation hinge that this joint is provided with has limit, the track scene synoptic diagram of interconnection, and wherein interconnection is provided with position, width, quantity and requires to carry out difference setting according to different experiments.
1.6.2 simulation result and analysis
The departure frequency that gets into the limit, track is made as 1000/hour, obtains limit, track traffic flow spacetime diagram.
Can find out by last figure traffic flow spacetime diagram; Along with interconnection quantity is increased to 7 by 2, traffic congestion appears and earlier reduces the trend that afterwards increases under identical departure frequency, when the interconnection number is 5; When being distributed between gateway and the gateway; Limit, the track degree of blocking up is minimum, stops to incur loss through delay and traffic delay is 13.48 and 8.23 seconds, and be interconnection position and quantity that the present invention recommends.In fact; Owing to can not stop in the zone, walkway; Therefore can pass through with lateral direction of car and pass through function suitably widening over against the walkway part of outlet as satisfying the pedestrian simultaneously; Simultaneously between the gateway, respectively add 1 interconnection, limit, track segments is increased, it is more convenient that the track nearby vehicle gets into runway.

Claims (6)

1. limit, track interconnection is provided with position and quantity optimization method; It is characterized in that; Adopt the emulation of two dimensional cellular automaton modeling as platform,, stop the detailed description of the multiple influence of simulated target function, the cellular of stopping rule, interconnection, turning path through comprising the analysis of limit, the track design form traffic stream characteristics that has interconnection; Target is carried out integrated emulation, draw passage position and quantity optimization data are set.
2. the method for claim 1 is characterized in that, the analysis of limit, the track design form traffic stream characteristics of interconnection is meant that the limit is provided with the situation of double stopway.
3. the method for claim 1 is characterized in that, stops the simulated target function and is meant: make x eExpression vehicle current location, x eThe get off start position of the station entrance direction of traffic that the guest requires of expression, D eThe expression station entrance width that the guest requires of getting off, the driver changes the wish function and can be expressed as:
Figure FDA0000138060700000012
In the following formula, δ 4, kRepresent k class driver on the limit, track that has interconnection inboard non-change the zone change the wish upper limit, relevant with driver's style and current traffic condition; λ 4What be illustrated in that the inboard target in the limit, track that has interconnection changes the zone changes the wish coefficient; Change to the wish of changing of fast lane
Figure FDA0000138060700000013
Be driver's type k, vehicle current location x c, the station entrance start position x that requires of the guest that gets off eFunction; Random (0, δ 4, k) be illustrated in the interval (0, δ 4, k) wish that produces at random;
Figure FDA0000138060700000014
Represent that inboard experience is changed and stop distance;
Figure FDA0000138060700000015
The position of expression is the inboard non-zone of changing;
Figure FDA0000138060700000016
The position of expression is that inboard target is changed the zone;
Figure FDA0000138060700000017
Zone, δ are changed for inboard punishment in the position of expression 5, kRepresent k class driver in limit, the track outside that has interconnection non-change the zone change the wish upper limit, relevant with driver's style and current traffic condition; λ 5What be illustrated in that limit, the track outside target that has interconnection changes the zone changes the wish coefficient; Change to the wish of changing of kerb lane
Figure FDA0000138060700000018
Be driver's type k, vehicle current location x c, the station entrance start position x that requires of the guest that gets off eFunction; Random (0, δ 5, k) be illustrated in the interval (0, δ 5, k) wish that produces at random;
Figure FDA0000138060700000019
Expression outside experience is changed and is stopped distance;
Figure FDA00001380607000000110
The position of expression is the non-zone of changing, the outside; The zone is changed for outside target in the position of expression;
Figure FDA00001380607000000112
The position of expression is that the zone is changed in outside punishment;
Get off the changing the wish function and can be expressed as of passenger:
Figure FDA00001380607000000113
Figure FDA0000138060700000021
In the following formula, δ 6, kRepresent the h class get off the passenger on the limit, track that has interconnection inboard non-change the zone change the wish upper limit, relevant with the passenger's that gets off style and current traffic condition; λ 6What be illustrated in that the inboard target in the limit, track that has interconnection changes the zone changes the wish coefficient; Random (0, δ 6, k) be illustrated in the interval (0, δ 6, k) wish that produces at random; δ 7, kRepresent the h class get off the passenger in limit, the track outside that has interconnection non-change the zone change the wish upper limit, relevant with the passenger's that gets off style and current traffic condition; λ 7What be illustrated in that limit, the track outside target that has interconnection changes the zone changes the wish coefficient; Random (0, δ 7, k) be illustrated in the interval (0, δ 7, k) wish that produces at random.
4. method as claimed in claim 3 is characterized in that, objective function is stopped in the inboard stop of driver objective function, the driver outside, objective function is stopped outside stopping objective function and passenger in the passenger inboard, and the wish value of changing that these four objective functions are corresponding is used v i, i=1,2,3,4 represent, the inboard probability of stopping the zone in zone, stop zone, the driver outside, passenger inboard stop zone and the passenger outside of stopping of then corresponding driver is used p i(v i), i=1,2,3,4 expressions, the selection probability after its game:
V in the following formula iBe current location, driver's type, the station entrance start position of passenger's requirement and the function of passenger type, be actually along with vehicle operating changes, and final the selection be the payoff between these four wish values.
5. the method for claim 1; It is characterized in that; The cellular of interconnection is meant: to adopting two-dimentional cellular to divide in limit, track interconnection and the long scope of a left and right motorbus thereof; Other road area adopts the one dimension cellular, after being dispersed by two-dimentional cellular in the zone, needs in the emulation to adopt cellular quantity and cellular position to describe the running orbit of vehicle.
6. the method for claim 1 is characterized in that, the emulation rule of turning path is:
1) emulation constantly t roll the interconnection wheel of vehicle away from and the lane line angle is β (t), the vehicle body deflection angle does
Figure FDA0000138060700000023
The speed of pivoted wheels on vehicle is V q(t), forefront vehicle body corner location is l (x (t), y (t));
2)t：＝t+1；
3) if l (x (t), y (t)) has got into runway, then β (t)=max (β (t)-δ d, 0), δ dExpression front-wheel revolution step-length changes 5;
4) if l (x (t), y (t)) does not get into runway, then β (t)=β (t)+δ a, δ aExpression front-wheel steer step-length;
5) if
Figure FDA0000138060700000024
V then B(t)=v B(t)+1,
Figure FDA0000138060700000025
The top speed of going for interconnection;
6) continuity current state is estimated t+2 constantly, and the cellular of current vehicle and adjacent vehicle takies situation;
7) if t+2 moment current vehicle and other vehicle all do not have the overlapping situation of cellular that takies, change 2; Otherwise continue;
8) if t+2 constantly current vehicle only to take cellular overlapping with adjacent vehicle 1, v then B(t) :=v B(t)-1, change 6;
9) if t+2 constantly current vehicle only to take cellular overlapping with adjacent vehicle 2,5, β (t)=β (t)+δ then d, change 6;
10) if t+2 constantly current vehicle only to take cellular overlapping with adjacent vehicle 3,4, β (t)=β (t)-δ then a, change 6;
11) to take cellular overlapping if many places appear in t+2 constantly, then v B(t)=0, change 6;
12) turning emulation finishes.
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