CN109345154A - A kind of intersection time and space utilization efficiency rating method - Google Patents
A kind of intersection time and space utilization efficiency rating method Download PDFInfo
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Abstract
The present invention relates to a kind of evaluation methods of intersection time and space utilization efficiency, it is characterized in that, the evaluation method establishes a kind of algorithm containing 6 intersection utilization efficiency evaluation indexes, the lane quantity (two-way) of quantity and each road including road intersection, guided vehicle road quantity/lane quantity, intersection greening, the unbalance factor of the road intersection volume of traffic, the angle of the crossing, red line inner area utilization rate, the corresponding coefficient of each index is determined according to the above index, then the marking of time and space utilization efficiency is carried out according to suggesting formulas, finally according to scoring event divided rank, determine the time and space utilization efficiency of intersection, realize the utilization efficiency to intersection in time by the evaluation of spacial influence, assess to quantification the time and space utilization efficiency of intersection.
Description
Technical field
This application involves traffic circulation efficiency fields, in particular to a kind of intersection time and space utilization efficiency rating side
Method.
Background technique
With social progress, the automobile quantity on road is growing day by day, and traffic congestion becomes government and the people pay close attention to
Social concern, since intersection is the bottleneck of road network, traffic volume constrains the utilization efficiency of road network, and traffic volume and intersection
Time and space utilization efficiency be directly related；After intersection is designed, built up, whether effective area, the transit time utilized is closed
Reason is that the principal element of influence intersection efficiency will increase intersection if road time-space distribution cannot utilize well
Stop delay, the stop frequency of mouth；The form type of intersection is more, and a kind of evaluation method is needed to imitate intersection time and space utilization
Rate is evaluated, and to find out the problem of intersection design is with canalization, and provides optimization direction.
Summary of the invention
Given this problem, it is an object of the invention to the utilization efficiency to existing intersection to evaluate, thus after being
Optimization or newly-built intersection provide solid reference.
The present invention proposes a kind of evaluation method of intersection time and space utilization efficiency, which is characterized in that the evaluation method is established
A kind of algorithm containing 6 intersection utilization efficiency evaluation indexes, the lane quantity of quantity and each road including road intersection
(two-way), guided vehicle road quantity/lane quantity, intersection greening, the proportionate relationship of the road intersection volume of traffic, the angle of the crossing, red line
Inner area utilization power determines the corresponding coefficient of each index according to the above index, secondly carries out space-time benefit according to suggesting formulas
It is given a mark with efficiency, finally according to scoring event divided rank, determines the time and space utilization efficiency of intersection, realize the benefit to intersection
With efficiency in time by the evaluation of spacial influence, the utilization efficiency of intersection is assessed to quantification.
The present invention adopts the following technical scheme that realization, is described as follows in conjunction with attached drawing 1:
1, a kind of method of intersection time and space utilization efficiency rating, which is characterized in that this method passes through the shape of score divided rank
Formula evaluates the time and space utilization efficiency of intersection, includes the following steps.
Step 1: the corresponding coefficient of six basic indexs is determined；
(1) coefficient is determined by the lane quantity (two-way) of the quantity of road intersection and each road --- S1:
1 road intersection situation of table
| Road intersection | Road intersection 1 | Road intersection 2 | Road intersection 3 |
| Lane quantity (two-way) t11 | |||
| Left straight right division t12 |
Crossing inlet lane quantity is to determine the key point of intersection efficiency, and import number of track-lines is more, corresponding logical
Row ability is bigger, then opposite will reduce in the vehicle of entrance driveway stagnation of movement, and the direction in import lane divides and signal lamp phase
It is consistent, interference can be reduced to traveling by dividing, but be influenced each other after transit time division.As shown in table 1, the lane of road intersection
Quantity (two-way) is set as t11, directly right division is set as t on a left side12, wherein left straight right division t12It is divided into two kinds of situations: 1) left straight right lane
It is provided with the lane of dedicated left-hand rotation, straight trip, dedicated right-hand rotation, at this time t121=1；2) not set left-hand rotation, straight trip, three directions of turning right
The dedicated Lanes of (one or two direction is only set), at this time t122=0.5, corresponding t is more improved in road setting12It is also bigger,
According to number of track-lines situation, coefficient S1=(t111*t12j1+t112*t12j2+…+t11i*t12ji)/10, wherein i indicates road intersection number, j
Indicate that the setting of left straight right lane belongs to any situation, j=1,2；
(2) guided vehicle road quantity/lane quantity --- S2
Since the right-of-way of intersection is alternately to pass through, and no matter whether the intersection is signalized intersections, vehicle is entering
Can all occur queuing phenomena when entrance driveway, wait preceding vehicle starting by intersection, due to workshop spacing, speed, starting etc.
Reason, behind queuing vehicle may not be able to pass through in time.For this purpose, increasing number of track-lines formation guided vehicle road in entrance driveway can widen
Entrance driveway, to increase throughput.Inlet guide lane quantity and direction number of track-lines are measured into ratio, take road intersection
In biggish ratio, it is as shown in table 2 situation occur: inlet guide lane quantity and direction lane quantity ratio are 1, are greater than 1
And less than 2, be more than or equal to 2, then assign different coefficient Ss2(S2=0.5,0.8,1), wherein S2Become larger with the increase of ratio,
It is more to also mean that guided vehicle road number increases on the basis of original number of track-lines, coefficient is also bigger；
2 S of table2Value suggestion is set
| Inlet guide lane quantity/lane quantity | Coefficient |
| 1 | 0.5 |
| Greater than 1 and less than 2 | 0.8 |
| More than or equal to 2 | 1 |
(3) situation is afforested according to intersection and determines environmental-friendly coefficient --- S3
Inside intersection often be equipped with greening, one is the machine being arranged between car lane and non-motorized lane it is non-greening every
From for motor vehicle and non-motor vehicle is isolated, it is ensured that traffic safety；Another kind be arranged in the road among two-way lane greening every
From, i.e., composition median strip.There is certain protective role to environment equipped with green plant, while occupying land area, influences to drive a vehicle
Sight.By afforesting situation inside intersection, environmental-friendly coefficient S is introduced3, as shown in table 3, according to whether there is or not greenings to be isolated, green
Environmental-friendly coefficient is divided into level Four by the operation conditions of the position and traffic of changing isolation, they are respectively: 1) it is unimpeded, there is greening
When, S3=1；2) unimpeded, when no greening, S3=0.9；3) crowded, when greening isolation, the non-greening of machine are isolated in road, S3=0.8；4) it gathers around
It squeezes, in road when greening isolation, inorganic non-greening isolation, S3=0.7, wherein as traffic noise prediction and greening condition are deteriorated,
Environmental-friendly coefficient S3Also can accordingly reduce；
3 S of table3Value suggestion
| Traffic circulation and greening situation | Environmental-friendly coefficient |
| It is unimpeded, there is greening | 1 |
| It is unimpeded, no greening | 0.9 |
| It is crowded, greening isolation, the non-greening isolation of machine in road | 0.8 |
| It is crowded, greening isolation, inorganic non-greening isolation in road | 0.7 |
(4) unbalance factor of the road intersection volume of traffic --- S4
The unbalance factor S of the road intersection volume of traffic4The 1/ volume of traffic 2 of=volume of traffic, wherein " volume of traffic 1 " indicates that the volume of traffic is opposite
The volume of traffic in smaller section is significantly less than another if there is the volume of traffic of a road for the two road to intersect
The volume of traffic unbalance factor of the volume of traffic of road, i.e. road intersection is too small, and it is mainly that the volume of traffic is big that this, which results in intersection,
Road service, remaining road intersection traffic efficiency is not obviously high, so that entire intersection efficiency is lower, two phase dealings
Volume of traffic difference bigger corresponding coefficient value in road is smaller；
(5) intersect ascent --- S5
If road intersection number is m, the angle of the crossing θ of intersection should all be equal to 360 °/2m as far as possible, to make between road intersection
Apart from short, and the area of entire intersection can also reduce.According to angle of the crossing situation, preferably crossing at right angle, then friendship at this time
Pitch ascent S5=θ/90°；
(6) red line inner area utilization rate --- S6
The boundary line of intersection land used in intersection red line, that is, traffic planning and design, if red line inner area is road, vehicle
(being such as canalized into import lane) used, then red line inner area utilization rate, which is substantially achieved, makes full use of；If part land used is advertisement, builds
It builds, land use for greening, then red line inner area utilization rate is underutilized, and according to the area in red line, red line inner face can be obtained
Product utilization rate S6=intersection area/intersection the gross area.
Step 2: the six evaluation index coefficients obtained according to step 1 carry out time and space utilization using formula suggested below
Efficiency marking, score are indicated with W: W=S1*S2*S3*S4*S5*S6* 100(points).
Step 3: according to time and space utilization efficiency score situation according to table 4 to the time and space utilization efficiency divided rank of intersection,
It is evaluated:
The time and space utilization level of efficiency of 4 intersection of table divides
| Score | > 50 | (35,50] | (20,35] | [0,20] |
| Grade | One | Two | Three | Four |
A. when space-time utilization efficiency score is greater than 50 timesharing, the time and space utilization level of efficiency of intersection is level-one；B. when space-time benefit
It is greater than 35 points with efficiency score and is less than or equal to 50 timesharing, the time and space utilization level of efficiency of intersection is second level；C. work as time and space utilization
Efficiency score is greater than 20 points and is less than or equal to 35 timesharing, and the time and space utilization level of efficiency of intersection is three-level；D. when time and space utilization is imitated
Rate score is level Four less than 20 timesharing, the time and space utilization level of efficiency of intersection.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Fig. 2 is intersection schematic diagram.
In Fig. 2: 1, the lane of road intersection；2, inlet guide lane；3, isolation is afforested in road；4, the non-greening isolation of machine；
5, non-motorized lane；6, the angle of the crossing；7, unutilized area in red line.
Specific embodiment
Specific introduction is done to the present invention with the following Examples.
As shown in Fig. 2, it is the intersection schematic diagram of embodiment, wherein the specifying information of the intersection is as follows:
The intersection is made of the intersection of the two road A, B, and wherein A is two-way 8 lane, and B is two-way 6 lane, and A, B are provided with a left side
The dedicated Lanes in three directions in the straight right side；The inlet guide number of track-lines of A road is that the inlet guide number of track-lines of 5, B road is 3, entirely
Intersection is unobstructed greening, the volume of traffic Q of A roadA=6000/hour, the volume of traffic Q of B roadB=4000/hour are intersected
The angle of the crossing of mouth is 90 °, and intersection area and intersection gross area ratio are 0.7.
With reference to the accompanying drawings 1, a kind of intersection time and space utilization efficiency rating method of the embodiment of the present invention, comprising the following steps:
Step 1: determining six basic index coefficients of intersection:
(1) coefficient is determined by the lane quantity (two-way) of the quantity of road intersection and each road --- S1:
Known by embodiment, A is two-way 8 lane and the dedicated Lanes for being provided with left straight right three directions, then t111=8, t1211=1, B
It is two-way 6 lane and the dedicated Lanes for being provided with left straight right three directions, then t112=6, t1212=1, road intersection situation such as table 1
It is shown:
1 road intersection situation of table
| Road intersection | Road intersection 1 | Road intersection 2 | Road intersection 3 |
| Lane quantity (two-way) t11 | 8 | 6 | Nothing |
| Left straight right division t12 | 1 | 1 | Nothing |
According to number of track-lines situation, coefficient S1=(t111*t12j1+t112*t12j2+…+t11i*t12ji)/10, wherein i indicates road intersection
Number, j indicate that the setting of left straight right lane belongs to any situation, j=1,2, then S in embodiment1=8*1/10+6*1/10=1.4；
(2) guided vehicle road quantity/lane quantity --- S2
The inlet guide number of track-lines of A road is 5, and unidirectional number of track-lines is that the inlet guide number of track-lines of 4, B road is 3, unidirectional lane
Number is 3, and the inlet guide lane quantity in two road and direction number of track-lines are measured ratio, A:5/4=1.25, B:3/3 respectively
=1, the larger ratio 1.25 in the two is taken, coefficient S is selected according to table 22, then S2=0.8；
2 S of table2Value suggestion is set
| Inlet guide lane quantity/lane quantity | Coefficient |
| 1 | 0.5 |
| Greater than 1 and less than 2 | 0.8 |
| More than or equal to 2 | 1 |
(3) situation is afforested according to intersection and determines environmental-friendly coefficient --- S3
According to whether there is or not the operation conditions of greening isolation, the position of greening isolation and traffic, and environmental-friendly coefficient is divided into level Four,
They are respectively: 1) it is unimpeded, when having greening, and S3=1；2) unimpeded, when no greening, S3=0.9；3) crowded, greening isolation, machine in road
When non-greening is isolated, S3=0.8；4) crowded, in road when greening isolation, inorganic non-greening isolation, S3=0.7, the intersection in embodiment
Mouth is unobstructed greening, then knows environmental-friendly coefficient S according to table 33=1；
3 S of table3Value suggestion
| Traffic circulation and greening situation | Environmental-friendly coefficient |
| It is unimpeded, there is greening | 1 |
| It is unimpeded, no greening | 0.9 |
| It is crowded, greening isolation, the non-greening isolation of machine in road | 0.8 |
| It is crowded, greening isolation, inorganic non-greening isolation in road | 0.7 |
(4) unbalance factor of the road intersection volume of traffic --- S4
The unbalance factor S of the road intersection volume of traffic4The 1/ volume of traffic 2 of=volume of traffic, wherein " volume of traffic 1 " indicates that the volume of traffic is opposite
The volume of traffic in smaller section, by the volume of traffic Q of A roadA=6000/hour, the volume of traffic Q of B roadB=4000/hour can
Know, S4=4000/6000=0.67；
(5) intersect ascent --- S5
If road intersection number is m, the angle of the crossing θ of intersection should all be equal to 360 °/2m as far as possible, to make between road intersection
Apart from short, and the area of entire intersection can also reduce.According to angle of the crossing situation, preferably crossing at right angle, then friendship at this time
Pitch ascent S5=θ/90 °, the angle of the crossing of the embodiment are 90 °, angle of the crossing coefficient S5=90°/90°=1；
(6) red line inner area utilization rate --- S6
According to red line inner area utilization rate S6=intersection area/intersection the gross area, by embodiment intersection area
It is 0.7 it is found that red line inner area utilization rate S with intersection gross area ratio6=0.7。
Step 2: the six evaluation index coefficients obtained according to step 1 carry out time and space utilization using formula suggested below
Efficiency marking, score W are indicated: W=S1*S2*S3*S4*S5*S6* 100(points)=1.4*0.8*1*0.67*1*0.7*100=52.528
(dividing).
Step 3: according to time and space utilization efficiency score situation according to table 4 to the time and space utilization efficiency divided rank of intersection,
It is evaluated:
The time and space utilization level of efficiency of 4 intersection of table divides
| Score | > 50 | (35,50] | (20,35] | [0,20] |
| Grade | One | Two | Three | Four |
W=52.528 point are acquired by step 2, then are divided by the time and space utilization level of efficiency of intersection it is found that when the intersection
Empty utilization efficiency grade is level-one.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (9)
1. the evaluation method that the present invention proposes a kind of intersection time and space utilization efficiency, which is characterized in that the evaluation method establishes one
Algorithm of the kind containing 6 intersection utilization efficiency evaluation indexes, the lane quantity of quantity and each road including road intersection are (double
To), guided vehicle road quantity/lane quantity, intersection greening, in the unbalance factor of the road intersection volume of traffic, the angle of the crossing, red line
Area utilization determines the corresponding coefficient of each index according to the above index；
Secondly the marking of time and space utilization efficiency is carried out using six index coefficients and suggesting formulas, score is indicated with W, W=S1*S2*S3*
S4*S5*S6* 100(points)；
Finally the time and space utilization efficiency divided rank of intersection is evaluated according to time and space utilization efficiency score situation.
2. a kind of intersection time and space utilization efficiency rating method according to claim 1, which is characterized in that left straight right vehicle
The division in road is divided into two kinds of situations: 1) left straight right lane is provided with the lane of dedicated left-hand rotation, straight trip, dedicated right-hand rotation；2) it does not set
Set left-hand rotation, straight trip, turn right three directions (one or two direction is only set) dedicated Lanes.
3. a kind of intersection time and space utilization efficiency rating method according to claim 1, which is characterized in that inlet guide
The ratio of lane quantity and direction lane quantity is centainly not less than 1.
4. a kind of intersection time and space utilization efficiency rating method according to claim 1, which is characterized in that intersection
It afforests situation and only considers that whether there is or not greenings if traffic condition is unimpeded, do not consider the position of its greening；If traffic appearance is crowded, having
On the basis of greening, greening isolation or the non-greening isolation of machine in road are divided.
5. a kind of intersection time and space utilization efficiency rating method according to claim 1, which is characterized in that road intersection
The unbalance factor value of the volume of traffic is 1/ volume of traffic 2 of the volume of traffic, wherein " volume of traffic 1 " indicates the relatively small section of the volume of traffic
The volume of traffic.
6. a kind of intersection time and space utilization efficiency rating method according to claim 1, which is characterized in that take intersection
The range at angle be (0 °, 90 °].
7. a kind of intersection time and space utilization efficiency rating method according to claim 1, which is characterized in that red line inner face
Product refers mainly to land area that is unutilized or being not converted into path resource inside intersection.
8. a kind of intersection time and space utilization efficiency rating method according to claim 1, which is characterized in that utilize six
Index coefficient and suggesting formulas carry out the marking of time and space utilization efficiency, and score is indicated with W, W=S1*S2*S3*S4*S5*S6* 100(points).
9. a kind of intersection time and space utilization efficiency rating method according to claim 1, which is characterized in that when intersection
The grade classification of empty utilization efficiency is divided into four grades.
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