CN103761872B - The analysis method of BRT stations overpass and platform integrity service level - Google Patents
The analysis method of BRT stations overpass and platform integrity service level Download PDFInfo
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- CN103761872B CN103761872B CN201410032889.1A CN201410032889A CN103761872B CN 103761872 B CN103761872 B CN 103761872B CN 201410032889 A CN201410032889 A CN 201410032889A CN 103761872 B CN103761872 B CN 103761872B
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Abstract
The invention discloses a kind of BRT stations overpass and the analysis method of platform integrity service level, comprise the following steps：S1 obtains the basic document of BRT station overpasses and platform, and the basic document includes road segment classification and overall width, length, the gradient and the barrier in each section；S2 carries out basic road division to target BRT station overpasses and platform, and using basic road as analytic unit；S3 calculates the analytical parameters of basic road；S4 determines the service level of basic road；S5 determines bottleneck road according to the service level of basic road；S6 determines target BRT station overpasses and platform integrity service level.The present invention provides quantitative basis for the analysis of BRT stations overpass and platform integrity service level with improvement.
Description
Technical field
The present invention relates to field of traffic control, and in particular to a kind of BRT stations overpass and platform integrity service level
Analysis method.
Background technology
BRT stations overpass and platform integrity service level refer to overpass and all sections of platform in BRT stations
The service level that entirety is embodied, i.e. BRT stations overpass and platform integrity service level.
Overpass and platform integrity service level are the comprehensive embodiments of BRT stations service ability and level in BRT stations,
Scientific and reasonable analysis and evaluation is carried out to it and understands BRT operating administrations BRT stations operation situation, improve BRT stations fortune
Battalion's integrity service level, improves user satisfaction, it is to avoid produce that pedestrian is crowded in peak period and tread event etc. has very big
Meaning, but at present, corresponding method is lacked in China's BRT operation management to BRT stations overpass and platform integrity service
Level carries out science, the analysis of quantitative and system.
Most of researchs at present are all carried out just for single pedestrian facility such as overline bridge, stair, waiting station platform, pavement etc.
Analysis in terms of service level, is not yet found and BRT is entered the station overpass and platform regards an entirety as and carries out service level point
Analysis document explanation.
The content of the invention
For the shortcoming and deficiency that overcome prior art to exist, the present invention provides BRT station overpasses and platform entirety
The analysis method of service level.
The present invention is adopted the following technical scheme that：
A kind of BRT stations overpass and the analysis method of platform integrity service level, comprise the following steps：
S1 is obtained the basic document of target BRT station overpasses and platform by electronic map or plane design drawing, described
Basic document includes road segment classification, overall width, length, the gradient and barrier, wherein the barrier wide reference U.S.《Road
Ability handbook》The relevant regulations of the 18th chapter in 2000；Pavement and platform are waited the fringing in area：0.5m；Overpass lateral rail：
0.5m；Bushes：0.7m；Side building wall：0.5m；Trees：0.2m
S2 carries out basic road division according to road segment classification to target BRT station overpasses and platform, and with basic road
Duan Zuowei analytic units；
The road segment classification includes that horizontal sidewalk, stair, ramp pavement, booking enter the station area and platform is waited area.
S3 calculates the analytical parameters of basic road, the effective width of analytical parameters including pavement, per capita space, OK
People's per flow rate, pedestrian stream speed, V/C ratios and booking residence time；
The effective width on the pavement refers to the part that pedestrian can effectively utilize in Route for pedestrians.
The computing formula of pavement effective width is as follows：
WE=WT-WO
In formula：
WE- pavement effective width (m),
WT- pavement overall width (m),
WO- barrier width with pass round obstacle distance sum (m).
Pedestrian's per flow rate Vp (people/min/m):
Vp=V15/(15*WE)
Wherein, VP- pedestrian per flow rate (people/min/m)；V15The 15 minutes flow rates (people/15min) in-peak；WE- people row
Road effective width (m).
The pedestrian stream speed S：
BRT stations overpass and the integrity service level of platform to being completed are analyzed, and S is specific for pedestrian stream speed
Numerical value can calculate sample average and obtain according to field observation：
S=(∑ Si)/n
Wherein, Si is i-th sample walking speed (m/s)；N is sample size.
BRT stations overpass and the integrity service level of platform in planning and designing is analyzed, can basis《Road
Traffic capacity handbook》In recommendation：" pedestrian walking speed depends on the ratio of pedestrian the elderly (being higher than 65 years old).If
0%~20% pedestrian is the elderly, and when calculating pavement, pedestrian walking speed can use 1.2 meter per seconds；If it exceeds 20%
Pedestrian be the elderly, pedestrian walking speed can use 1 meter per second.In addition, when the gradient is more than 3%, the gradient often increases by 10%,
Walking speed 0.1 meter per second of reduction.”
The pace of the space S per capita (m2/p):
Space=1/k
K=60*Vp/S
Wherein：K is pedestrian's current density, p/m2；Vp is pedestrian's per flow rate, people/min/m；
S is pedestrian stream speed, m/s.
The V/C ratios：
It is assumed that the pavement traffic capacity is C=75 people/min/m, then V/C is：
V/C=Vp/75；Wherein Vp is pedestrian's per flow rate.
The booking residence time：
The booking residence time refers to passenger enters the station the time that area terminates to booking from into booking, to the BRT cars being completed
Stand passenger's average booking residence time when can directly count 15 minutes highest passenger flows, i.e.,：
Tw=∑s (TOi-TIi)/n (7)
In formula, TOi is i-th moment of passenger's completion booking, and TIi is moment of i-th passenger into booking area, and n is
Sample size.
Not yet build up such as target BRT stations, also N number of M/M/1 rows as can be regarded booking area of entering the station using the method for queueing theory
Team system, then booking residence time Tw be：
Tw=(∑ Twi)/N (8)
Twi=1/ (μ i- λ i) (9)
In formula, Twi is the residence time of i-th booking mouthful, and N is counted out for booking, and λ i are represented in the unit interval and averagely arrived
Up to the passenger flow number of booking mouthful i, μ i represent in the unit interval that booking service finishes the average passenger flow number for leaving booking mouthful i, and μ i>λi
It is that queuing system keeps stable premise.
S4 determines the service level of basic road, specially：The service level LOS of basic road divides leading indicator and behaves
Equal spatial parameter Space, is aided with pedestrian flow rate, walking speed and saturation degree V/C, with worst LOS as final result.
The level of service division standard difference of all types of basic roads is as follows：
When basic road is plane pavement, service level is divided according to following standard：
Plane pavement level of service division standard
"-" represents that data do not know in above table.
When basic road type is stair, service level is divided according to following standard：
Stair level of service division standard
"-" represents that data do not know in above table.
Wherein Level Walking speed SHFor
SH=LH/t
It is Level Walking speed, unit m/s in formula；LHIt is stair horizontal range, unit m；T is average for observation sample
Walking time.
The ramp pavement, the gradient in the ramp is more than ± 3%；
The level of service division standard of ramp basic road is identical with plane pavement, simply the size and climb and fall of the gradient
Walking speed S can be influenceed, so that the parameter such as pedestrian space, pedestrian flow rate, saturation degree V/C changes, consequently, it is possible to shadow
Ring LOS levels.
Platform is waited area：
BRT station platforms area's level of service division standard of waiting is as follows：
Booking is entered the station area：
The booking area's level of service division standard that enters the station in BRT stations is as follows：
The service level LOS of S5 and then each type basic road according to above-mentioned determination, service level class is minimum
Basic road j is bottleneck road, and the bottleneck road may more than one.
S6 determines target BRT station overpasses and platform integrity service level；
LOSW=LOSj
Wherein, LOSj is the service level of bottleneck road.
Because BRT stations overpass and platform pedestrian stream are continuous, therefore improve BRT station overpasses and platform
The horizontal LOS of integrity serviceWMaximally effective measure is exactly the service level LOSj for improving bottleneck road.
The present invention carries out quantitative analysis to BRT stations overpass and platform integrity service level, determines bottleneck road
Service level, finally determines BRT station overpasses and platform integrity service level.
Beneficial effects of the present invention：
The present invention can be analyzed to the BRT stations overpass and platform that are completed, it is also possible to the BRT cars in design
Stand overpass and platform is analyzed；And method is simple and easy to apply, can be to China BRT station overpasses and station using the method
The integrity service level of platform is analyzed, and carries out specific aim improvement accordingly, therefore the present invention has very big actual promotion price
Value.
Brief description of the drawings
Fig. 1 is workflow diagram of the invention；
Fig. 2 is the division schematic diagram of basic road in the specific embodiment of the invention；
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
The present embodiment obtains the station overpass and platform by taking Guangzhou BRT stations overpass and platform as an example
The analysis method of integrity service level, comprises the following steps：As shown in figure 1,
S1 obtains the basic document of BRT station overpasses and platform；
S2 carries out basic road division to target BRT station overpasses and platform, and with basic road as analytic unit,
As shown in Figure 2；
S3 calculates the analytical parameters of basic road, the effective width of analytical parameters including pavement, per capita space, OK
People's per flow rate, pedestrian stream speed, V/C ratios and booking residence time, table specific as follows；
The analytical parameters value of each basic road is as shown in the table：
Note：Section 1 and 4 is entered the station area for booking, and its level of service division standard only relies on one parameter of booking residence time；
Section 2 and 3 is platform, and its level of service division standard only relies on one, space parameter per capita.
Then S4 determines the service level in each rank section according to each analytical parameters value and level of service division standard, as follows
Shown in table.
| Basic road | Service level LOS | Basic road | Service level LOS |
| 1 | C | 7 | C |
| 2 | B | 8 | C |
| 3 | D | 9 | C |
| 4 | C | 10 | C |
| 5 | F | 11 | B |
| 6 | C |
S5 determines the minimum basic road 5 of service level by upper table, and its service level is that F, i.e. stair section 5 are Guangzhou
The bottleneck road at BRT stations.
Service levels of the S6 finally according to bottleneck road, it may be determined that Guangzhou BRT stations overpass and platform
Integrity service level is F.Show the Guangzhou BRT stations overpass and platform integrity service level error, service level is urgently
Lifting, and the bottleneck road 5 for improving is first had to, its integrity service level can just bring up to D grades；If further improved basic
Section 3, then the BRT stations overpass and platform integrity service level can bring up to C grades.
The basic road level of service division standard Primary Reference U.S. of the invention《HCM》.
Above-described embodiment is the present invention preferably implementation method, but embodiments of the present invention are not by the embodiment
Limitation, it is other it is any without departing from Spirit Essence of the invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (2)
1. the analysis method of a kind of BRT stations overpass and platform integrity service level, it is characterised in that including following step
Suddenly：
S1 obtains the basic document of BRT station overpasses and platform, and the basic document includes road segment classification and each section
Overall width, length, the gradient and barrier；
S2 carries out basic road division to target BRT station overpasses and platform, and make with basic road according to road segment classification
It is analytic unit；
S3 calculates the analytical parameters of basic road, and the analytical parameters include pavement effective width, per capita space, pedestrian's unit
Flow rate, pedestrian stream speed, V/C ratios and booking residence time；
S4 determines the service level of basic road, specially：The level of service division index of basic road is space, pedestrian per capita
Per flow rate, pedestrian stream speed and V/C ratios, with worst value as final result；
S5 determines bottleneck road according to the service level of basic road, and the minimum section of service level class is bottleneck road；
S6 determines target BRT station overpasses and platform integrity service level, i.e.,
LOSW=LOSj
Wherein, LOSj is the service level of bottleneck road.
2. analysis method according to claim 1, it is characterised in that in the S2 road segment classification include horizontal sidewalk,
Stair, ramp pavement, booking enter the station area and platform is waited area.
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