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Function-based quantitative evaluation method of urban road network planning

A road network and quantitative evaluation technology, applied in data processing applications, instruments, calculations, etc., can solve problems that do not involve the reliability of urban road network functions

Active Publication Date: 2018-02-23
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing evaluation indicators mainly focus on the three aspects of connectivity reliability, travel time reliability and road network capacity reliability, and do not involve the evaluation of urban road network functional reliability.

Method used

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  • Function-based quantitative evaluation method of urban road network planning
  • Function-based quantitative evaluation method of urban road network planning
  • Function-based quantitative evaluation method of urban road network planning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Quantitative evaluation of the reliability of the square road network of embodiment 1

[0052] In this embodiment, taking the square road network as an example, the reliability of the square road network is quantitatively evaluated, and three kinds of square road network schemes with different numbers of road sections and nodes are respectively constructed, such as figure 1 As shown, when constructing the road network, the node represents the intersection of the trunk road and the secondary trunk road, and the intersection of the trunk road and the secondary trunk road is the source-sink point. The dots in the figure represent the secondary trunk roads, and the solid lines represent the trunk roads . According to the passing function reliability model of the road section unit, without considering the congestion situation, the stochastic simulation algorithm is used to calculate the passing function system reliability of the urban road network with RANMGG software, and t...

Embodiment 2

[0060] Example 2 Quantitative Evaluation of the Reliability of the Annular Radial Road Network

[0061] In this embodiment, taking the circular radial road network as an example, the reliability of the circular radial road network is quantitatively evaluated, and three ring radial road network schemes with different numbers of road sections and nodes are respectively constructed, as shown in Figure 5 As shown, when constructing the road network, the node represents the intersection of the trunk road and the secondary trunk road, and the intersection of the trunk road and the secondary trunk road is the source-sink point. The dots in the figure represent the secondary trunk roads, and the solid lines represent the trunk roads . According to the passing function reliability model of the road section unit, without considering the congestion situation, the stochastic simulation algorithm is used to calculate the passing function system reliability of the urban road network with R...

Embodiment 3

[0069] Embodiment 3 Quantitative evaluation of the reliability of square format + circular radial road network

[0070] In this embodiment, taking the square format + circular radial road network as an example, the reliability of the square format + circular radial road network is quantitatively evaluated, and a square format + circular radial road network with 100 nodes and 128 road sections is constructed. Road network schemes, such as Figure 9 As shown, when constructing the road network, the node still represents the intersection of the trunk road and the secondary trunk road, and the intersection of the trunk road and the secondary trunk road is the source and sink point. The dots in the figure represent the secondary trunk roads, and the solid lines represent the trunk roads. road. According to the passing function reliability model of the road section unit, without considering the congestion situation, the stochastic simulation algorithm is used to calculate the passi...

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Abstract

The invention belongs to the technical field of urban road network reliability evaluation and specifically relates to a function-based quantitative evaluation method of urban road network planning. Anurban road network is divided into several road segment units, the reliability theory is used, with pass function reliability as an evaluation index, a pass function reliability model of the road segment units is constructed, and according to the pass function reliability of the road segment units and the degrees of importance of the road segment units, the reliability of different urban road network layout patterns and the distribution rules of the degrees of importance of the road segment units in different urban road network layout patterns are quantitatively evaluated. A reference value is provided for the quantitative evaluation of urban road network planning schemes, the method is also can be applied to the quantitative evaluation of an existing urban road network, and a solution isprovided for the contradiction between the existing urban road network and an increasingly serious traffic problem in urban development.

Description

technical field [0001] The invention belongs to the technical field of urban road network reliability evaluation, and in particular relates to a function-based quantitative evaluation method for urban road network planning. Background technique [0002] The urban road network system is the skeleton and lifeblood of the city. It carries the various behaviors and activities of travelers. It is the basis and premise for ensuring the normal operation of various functions of the city and maintaining the steady development of the social economy. As a complex system, the road network system should have Hierarchy is composed of different levels of urban roads; at the same time, it should have the ability to realize the orderly and efficient operation of traffic, that is, function. [0003] Since the "Urban Road Design Code" (CJJ37-1990) began to classify roads, and the "Urban Road Intersection Planning Code" (GB50647-2011) included urban road functions into the code for the first ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0639G06Q50/26
Inventor 严亚丹李辉王东炜仝佩宁佐强张征陈志举李杨
Owner ZHENGZHOU UNIV
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