Optimization Method of Road Access Location Based on Modified Capacity
[1]YAN Yadan,LI Yang,TONG Pei.Optimization Method of Road Access Location Based on Modified Capacity[J].Journal of Zhengzhou University (Engineering Science),2020,41(04):7-11.[doi:10.13705/j.issn.1671-6833.2020.01.009]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
41
Number of periods:
2020 04
Page number:
7-11
Column:
Public date:
2020-08-12
- Title:
- Optimization Method of Road Access Location Based on Modified Capacity
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2020.01.009
- Abstract:
- Access point was important part of urban road sections.The number of entrances and exits was a main influencing factor on urban road capacity.Firstly,the influence of entrances and exits on capacity of a road section was analyzed.Effects caused by the number of entrances and exits was represented by the physical modification coefficient of entrances and exits on the outermost lane.Speed reduction and lane changing effects caused by the entering and exiting of vehicles on entrances and exits were represented by the transverse reduction coefficient.Furthermore,the comprehensive modification factor was proposed.Considering influences of entrances and exits,a calculating model of road section capacity was constructed.Secondly,taking into account the distance between access points and intersections,access spacing constraints,using the maximum sum of modified capacities as the objective function,an optimization method for access location was proposed.Finally,a residential area in Zhengzhou city was taken as an example to testify the feasibility.Results showed that in order to maximize the sum of modified capacities of roads around the residential area,accesses should be preferentially set in the middle of low-grade urban road sections.With the number of access increasing,the access roads should be selected from low-grade roads to high-grade roads in sequence.When road grades were same,priority should be given to roads with fewer lanes.
- References:
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Last Update:
2020-10-06