CN107480330A - A kind of calculating of the lane side traffic capacity, improved method - Google Patents
A kind of calculating of the lane side traffic capacity, improved method Download PDFInfo
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- CN107480330A CN107480330A CN201710546004.3A CN201710546004A CN107480330A CN 107480330 A CN107480330 A CN 107480330A CN 201710546004 A CN201710546004 A CN 201710546004A CN 107480330 A CN107480330 A CN 107480330A
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Abstract
The invention discloses a kind of calculating of the lane side traffic capacity, improved method, including：1) current lane side preliminary design scheme is drafted according to target year traffic flow, comprehensive transportation hub totality traffic design；2) judge whether current lane side preliminary design scheme meets the transport need in target year according to traffic flow method, meet to perform step 4)；Otherwise step 3) is performed；3) preliminary tentative calculation is carried out to current lane side preliminary design scheme using analytic approach, queueing theory method, obtains lane side longitudinal length and required port number respectively；4) using traffic simulation software structure lane side model, layout details is solved, evaluate traffic circulation efficiency；5) lane side design after improving is determined；Parking stall time T is driven into traffic flow methodhrValue is 5s, and the time of dropping off the guests is 35 second.The present invention determines the lane side traffic capacity with a variety of theoretical models, and drafts lane side design according to the traffic capacity or existing lane side is improved.
Description
Technical field
The present invention relates to comprehensive transportation hub design field out of the station, especially relates to the logical of transport hub lane side
Row capacity calculation method.
Background technology
Road traffic facility, the major class of Uninterrupted and interrupted flows means of transportation two, track can be divided into according to traffic characteristics at present
Side traffic pattern is both not belonging to continuous stream, is stopped be not equal to again between.
So road passage capability computational methods and theoretical formula are for the complicated traffic flow of lane side and traffic group at present
Knit and have no direct reference significance, it is difficult to directly as the traffic capacity and technical parameter theoretical foundation for determining lane side, it is impossible to refer to
Lead the design for determining lane side.
The content of the invention
The invention provides a kind of calculating of the lane side traffic capacity, improved method, the present invention uses a variety of theoretical moulds
Type determines the traffic capacity of lane side, and existing lane side is improved according to the traffic capacity, described below：
A kind of calculating of the lane side traffic capacity, improved method, the described method comprises the following steps：
1) current lane side initial designs side is drafted according to target year traffic flow, comprehensive transportation hub totality traffic design
Case；
2) judge whether current lane side preliminary design scheme meets the transport need in target year according to traffic flow method, it is such as full
Foot, perform step 4)；Otherwise, step 3) is performed；
3) preliminary tentative calculation is carried out to current lane side preliminary design scheme using analytic approach, queueing theory method, obtains car respectively
The longitudinal length on road side and required port number；
4) using the model of traffic simulation software structure lane side, layout details is solved, evaluate the effect of traffic circulation
Rate；
5) it is final to determine the lane side design after improving；
Wherein, parking stall time T is driven into traffic flow methodhrValue be 5s, the time of dropping off the guests is 35 second.
Wherein, the model of lane side is built using traffic simulation software, solving layout details is specially：
Determine number of track-lines；Upper objective point；Upper objective number of track-lines；Lane side reasonable length；Lane side segments；Pedestrian's queue paths
Arrangement form.
The beneficial effect of technical scheme provided by the invention is：
1st, this method passes through the investigation on the spot to built multiple Large-sized Integrated Traffic Terminals, theoretical calculation, emulation point
Analysis, demonstrating this method has the advantages of directly perceived, practical, quantitative；
2nd, this method provides gross data for the determination of lane side design and calculates basis, compensate for sky in this respect
In vain, can be as the design and calculation method of newly-built transport hub lane side scheme.
Brief description of the drawings
Fig. 1 is a kind of calculating of the lane side traffic capacity, the flow chart of improved method.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention is made below further
It is described in detail on ground.
Embodiment 1
A kind of calculating of the lane side traffic capacity, improved method, this method determine setting for lane side using three-phase approach
Meter, referring to Fig. 1, this method comprises the following steps：
101：Current lane side initial designs are drafted according to target year traffic flow, comprehensive transportation hub totality traffic design
Scheme；
Wherein, the city of target year traffic flow and comprehensive transportation hub totality traffic design in practical application
Planning, development are set, and can be following 1 year, the magnitude of traffic flow of 10 years 2 years ... etc., and the embodiment of the present invention is not limited this
System.
102：Judge whether current lane side preliminary design scheme meets the transport need in target year according to traffic flow method, such as
Meet, perform step 104；Otherwise, step 103 is performed；
Wherein, urban planning, development of the default transport need in practical application is set, and can be future 1
Year, the transport need of 10 years 2 years ... etc., the embodiment of the present invention are without limitation.
103：Current lane side preliminary design scheme is carried out using macroscopical computational methods (analytic approach, queueing theory method) preliminary
Tentative calculation, the longitudinal length of lane side and required port number are obtained respectively；
104：Using traffic simulation software VISSIM, (software is known to those skilled in the art, and the present invention is real
Example is applied not repeat this) model of structure lane side, solve layout details, evaluate the efficiency of traffic circulation；
105：It is final to determine the lane side design after improving.
In summary, the embodiment of the present invention provides reason by determination of the above-mentioned steps 101- steps 105 for lane side scale
Basis is calculated by data, the computational methods that can be established as newly-built transport hub lane side scale, by more to what is be completed
The investigation on the spot of individual Large-sized Integrated Traffic Terminals, theoretical calculation, simulation analysis, demonstrating this method has directly perceived, practicality, quantifies
The advantages of.
Embodiment 2
The scheme in embodiment 1 is further introduced with reference to specific calculation formula, example, it is as detailed below
Description：
201：Current lane side initial designs are drafted according to target year traffic flow, comprehensive transportation hub totality traffic design
Scheme；
202：Judge whether current lane side preliminary design scheme meets the transport need in target year according to traffic flow method, such as
Meet, perform step 204；Otherwise, step 203 is performed；
Wherein, traffic flow law theory calculation formula is：
Wherein, C is the maximum vehicle number for completing to drop off the guests in one parking stall of unit time lane side；E(Thr) stop to drive into
Car parking stall time desired value, value 5 seconds；E(Tlk) to drop off the guests time desired value, value 35 seconds；NEParking stall number is shared for lane side；
λ is vehicle arriving rate；tcFor time headway.
Parking stall time T is driven into traffic flow methodhrWith for the time T that drops off the guestslkFor important parameter, this two parameter value mistakes
Greatly, single parking stall parking capacity calculation value can be caused relatively low, to meet the needs of future transportation amount, it is necessary to set more
Parking stall, increases the design scale of lane side, and causes the increase of engineering cost, produces unnecessary fund and wastes；Conversely, meeting
Cause lane side design scale less than normal, it is impossible to meet the needs of future transportation amount.
The lane side for multiple Large-sized Communication comprehensive hinges that the embodiment of the present invention has been built up at present to China is adjusted
Grind, collection in worksite mass data, then T drawn by the method for mathematical statisticshrValue 5s, TlkValue 35 seconds, take this two
Parameter value, using traffic flow method to current China into the current operation conditions of multiple transport hub lane sides carried out mould
Intend calculating, result of calculation is consistent substantially with lane side operation conditions.
203：Design is calculated using analytic approach and queueing theory method, obtain the longitudinal length of lane side with it is required
Port number；
Wherein, analytic approach theoretical calculation formula is：
Wherein, CL is lane side longitudinal length demand (m)；DiNeeded for the peak hour lane side parking of different vehicle type
Ask (veh/h)；TiFor the average lane side residence time (min) of different vehicle type；ViTrack is needed for different vehicle type
Edge lengths (m).
Wherein, waiting line approach theoretical calculation formula is：
Wherein, WqFor average queuing time；LqFor average queue length；S is service time；G is time departure；D is side
Difference；λ is vehicle arriving rate；K is offer parking position number.
That is, the port number according to required for can determining at present above-mentioned result of calculation.
204：Built using traffic simulation software VISSIM, according to longitudinal length and the required port number of lane side
The model of lane side, solve layout details, evaluate the efficiency of traffic circulation；
On the basis of the longitudinal length of lane side and required port number are determined by analytic approach and queueing theory method, first to car
Road side arrangement form carries out details arrangement, it is determined that corresponding suggested design and scheme analysis, specify corresponding scheme key factor, it is as follows
It is shown：
1. number of track-lines (including two aspects of total number of track-lines and upper objective number of track-lines), general to consider to be no more than 3 track situations,
It is highly difficult more than 3 lane traffic tissues, it is general to consider to be divided into multigroup lane side；
2. upper objective point (including upper visitor counts out and position distribution)；
3. upper objective number of track-lines；
4. lane side reasonable length；
5. lane side segments；
6. the arrangement form of pedestrian's queue paths.
Model according to scheme key factor using traffic simulation software VISSIM structure lane sides again, to each scheme
Analogue simulation is carried out, by the way that simulation result, such as average speed, mean delay, average queue length are carried out com-parison and analysis, confirmed
Final scheme.
205：It is final to determine the lane side design after improving.
In summary, the embodiment of the present invention provides reason by determination of the above-mentioned steps 201- steps 205 for lane side scale
Basis is calculated by data, the computational methods that can be established as newly-built transport hub lane side scale, by more to what is be completed
The investigation on the spot of individual Large-sized Integrated Traffic Terminals, theoretical calculation, simulation analysis, demonstrating this method has directly perceived, practicality, quantifies
The advantages of.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the embodiments of the present invention
Sequence number is for illustration only, does not represent the quality of embodiment.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (2)
1. a kind of calculating of the lane side traffic capacity, improved method, it is characterised in that the described method comprises the following steps：
1) current lane side preliminary design scheme is drafted according to target year traffic flow, comprehensive transportation hub totality traffic design；
2) judge whether current lane side preliminary design scheme meets the transport need in target year according to traffic flow method, such as meet,
Perform step 4)；Otherwise, step 3) is performed；
3) preliminary tentative calculation is carried out to current lane side preliminary design scheme using analytic approach, queueing theory method, obtains lane side respectively
Longitudinal length and required port number；
4) using the model of traffic simulation software structure lane side, layout details is solved, evaluate the efficiency of traffic circulation；
5) it is final to determine the lane side design after improving；
Wherein, parking stall time T is driven into traffic flow methodhrValue be 5s, the time of dropping off the guests is 35 second.
2. a kind of calculating of lane side traffic capacity according to claim 1, improved method, it is characterised in that described
Using the model of traffic simulation software structure lane side, solving layout details is specially：
Determine number of track-lines；Upper objective point；Upper objective number of track-lines；Lane side reasonable length；Lane side segments；The cloth of pedestrian's queue paths
Put form.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710546004.3A CN107480330A (en) | 2017-07-06 | 2017-07-06 | A kind of calculating of the lane side traffic capacity, improved method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109377755A (en) * | 2018-10-31 | 2019-02-22 | 惠州市德赛西威汽车电子股份有限公司 | A kind of lane efficiency optimization apparatus for grouping and method |
| CN111695241A (en) * | 2020-05-18 | 2020-09-22 | 东南大学 | Method for determining length of accelerating lane of left-turn ramp confluence area based on VISSIM simulation |
| CN112380597A (en) * | 2020-10-30 | 2021-02-19 | 东南大学 | Traffic organization design method for passenger transport hub drop platform based on lane group modularization |
-
2017
- 2017-07-06 CN CN201710546004.3A patent/CN107480330A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109377755A (en) * | 2018-10-31 | 2019-02-22 | 惠州市德赛西威汽车电子股份有限公司 | A kind of lane efficiency optimization apparatus for grouping and method |
| CN109377755B (en) * | 2018-10-31 | 2021-11-30 | 惠州市德赛西威汽车电子股份有限公司 | Lane traffic efficiency optimizing grouping device and method |
| CN111695241A (en) * | 2020-05-18 | 2020-09-22 | 东南大学 | Method for determining length of accelerating lane of left-turn ramp confluence area based on VISSIM simulation |
| CN112380597A (en) * | 2020-10-30 | 2021-02-19 | 东南大学 | Traffic organization design method for passenger transport hub drop platform based on lane group modularization |
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Application publication date: 20171215 |