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Mountain road grade judgment and optimization method

A technology of road grade and optimization method, applied in the field of grade, can solve the problems of impossible road research, one-sidedness of mountain roads, etc., and achieve the effect of reducing cost, wide application range and maximizing service life.

Pending Publication Date: 2020-08-18
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it plays a one-sided role in the optimization of mountain roads, and cannot conduct research on a certain road

Method used

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  • Mountain road grade judgment and optimization method
  • Mountain road grade judgment and optimization method
  • Mountain road grade judgment and optimization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Now take the fourth-grade highway in a certain mountainous area of ​​Guangdong (the design period is 10 years, and the traffic volume growth rate in the design period is 5%) as the research object, and the present invention will be described in detail in conjunction with the accompanying drawings.

[0066] Table 4 Uneven coefficient of daily distribution of traffic volume in this area

[0067] on Monday Tuesday Wednesday Thursday friday Saturday sunday average K wi

1.00 1.02 1.02 1.02 1.02 0.98 0.94 1

[0068] Step 1: Assume that the Class 4 highway will be open to traffic for 3 years, then m=3; make statistics on the traffic volume change trend within 3 years after the completion of this section of road.

[0069] Table 5 The trend of traffic volume change within m years

[0070] January February March April May June July August September October November December 1st year 11238 12567...

Embodiment 2

[0083] The next case will be calculated as an example (four-level road single lane)

[0084] Taking the fourth-class highway (single-lane) in a mountainous area of ​​Guangdong as the research object, the present invention will be described in detail in conjunction with the accompanying drawings.

[0085] Step 1: The Class 4 highway will be open to traffic for 3 years, then m=3; make statistics on the traffic volume change trend within 3 years after the completion of this section of road.

[0086] Table 7 The trend of traffic volume change in m years

[0087] January February March April May June July August September October November December 1st year 11238 12567 13489 14562 14862 13245 15075 14856 14923 14238 13241 12469 2nd year 12486 12973 13564 14851 19460 14253 14560 16258 15987 14863 14298 13956 3rd year 13950 16528 15924 16463 17681 15326 18346 16543 15847 15432 15897 14982

[0088...

Embodiment 3

[0100] The next case will be calculated as an example (two-lane four-way highway)

[0101] Taking a fourth-class highway (two-lane lane) in a mountainous area in Guangdong as the research object, the present invention will be described in detail in conjunction with the accompanying drawings.

[0102] Step 1: The Class 4 highway will be open to traffic for 3 years, then m=3; make statistics on the traffic volume change trend within 3 years after the completion of this section of road.

[0103] Table 9 Change trend of traffic volume within m years

[0104] January February March April May June July August September October November December 1st year 31846 32547 34572 34562 34862 33245 35075 34856 34923 34238 33241 29469 2nd year 32548 38425 33564 34856 37460 34253 34560 36258 35987 34863 35298 33956 3rd year 42567 46583 45924 46463 47681 45326 38346 36543 35847 35432 35897 34982

[0105] St...

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Abstract

The invention discloses a mountain road grade judgment and optimization method. The method comprises the following steps: step 1, obtaining the change trend of the annual traffic volume of a section of road in recent m years; step 2, obtaining the maximum traffic volume time period; step 3, obtaining a standard traffic volume; step 4, based on the average daily traffic volume N1 obtained in the step 3, obtaining an annual average daily traffic volume N within a design age limit; step 5, the design data of the section of road is consulted to determine the design vehicle speed and the road gradeof the section of road; step 6, calculating the saturated traffic volume according to the road grade and the designed vehicle speed; and step 7, comparing the two traffic volumes to judge the road grade and proposing an optimization method. The method is wide in application range and can be suitable for judging road grades of all mountainous areas; the timeliness after road grade judgment is relatively long, and the change of future traffic volume is considered in the judgment process; the timeliness of the judgment result is good, so that the road reconstruction cost can be effectively reduced, and the service life of the road is maximized.

Description

technical field [0001] The invention relates to the field of road grades in mountainous areas, in particular to a method for judging and optimizing road grades in mountainous areas. [0002] technical background [0003] Currently, there are two main ways to update road grades. One is to determine the road grade of the road based on information such as the number of lanes of the road measured by the collectors on the spot and whether there is a separation zone on the road, and update the road grade of the road in the traffic road network data according to the determined road grade. The other is to obtain information such as the road width of the road by identifying satellite images, determine the road grade of the road according to the information, and update the road grade of the road in the traffic road network data according to the determined road grade. [0004] Based on a road grade update method updated in real time, the advantage lies in combining the traffic capacity...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/26G08G1/01
CPCG06Q10/04G06Q50/26G08G1/0125G08G1/0137Y02T10/40
Inventor 丁秦华李想彭永恒孙建刚万成亮
Owner DALIAN NATIONALITIES UNIVERSITY
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