A method for automatic generation of large-scale urban rail networks based on land use

Abstract

The invention discloses a method for automatically generating a large-scale urban rail network based on land use, which is divided into six steps: S1 establishes a mathematical model; S2 performs cluster analysis to obtain multiple station clusters; S3 solves each station cluster with the minimum Spanning trees, merging each minimum spanning tree; S4 performing network correction on the network scheme generated after merging; S5 calculating the total length of the revised generating network scheme, if less than the minimum total length, updating the optimal generating network scheme and the minimum total length; S6 if the number of iterations does not reach the upper limit, return to step S3, iterate the above steps S3-S5 multiple times, otherwise end the process; the generation method can quantitatively carry out urban rail network design based on the site selection scheme of land use, to overcome The difficulty of subjective design and planning schemes, the variety of station and network structures, and the difficulty of scheme selection due to many influencing factors will improve the scientificity and rationality of urban rail network planning.

Description

technical field [0001] The invention belongs to the technical field of urban rail network planning, in particular to a method for automatically generating a large-scale urban rail network based on land use. Background technique [0002] Overview of Urban Rail Network Planning [0003] Urban rail network planning is the premise of efficient and reliable construction of urban rail system. The main purpose is to guide the rational construction of urban rail network with the principle of prudence, and ensure the functional applicability, operational rationality and engineering feasibility of the network. At this stage, many cities in China are carrying out large-scale urban rail planning or construction, providing planners with scientific and quantitative urban rail network planning methods, which will help reduce the workload of planners and improve the standards of network planning sex and science. [0004] The main research content of urban rail network planning is the over...

AI Technical Summary

Problems solved by technology

[0019] 1. Due to frequent changes in urban land use and rapid urban renewal, the old network planning scheme does not provide sufficient support for urban development;

[0020] 2. The preset scale of the planning network lacks traffic quantification analysis and does not consider urban expansion;

[0021] 3. Due to the lack of stable track network guidance, transfer conditions are basically not reserved, resulting in the subsequent stations and the first phase of the project mainly using passageways for transfers, which is inconvenient;

[0022] 4. The network level is single, there is no city express line, and the difference between the backbone line and the ordinary line is not obvious

[0025] 2. No transfer conditions have been reserved, resulting in difficulties in the construction of transfer and connection projects between subsequent stations and preliminary projects;

[0027] 4. The connection mode between the new city line and the central city line is single, and the connection mode between the new city or peripheral line of the city and the central city line or the current main line network is relatively single, and most of them are single-line connection

The biggest problem brought about by this connecting transfer mode is that the transfer point is located on the edge of the city, and there is a lack of a large number of jobs around the transfer station, so most passengers need to choose to transfer to other lines to enter the central city. and its transfer stations bring greater passenger flow and operating pressure;

[0028] 5. Insufficient transfer station capacity leads to network bottlenecks. Since some transfer stations are used as transportation hubs, segmental planning may lead to continuous addition of multiple lines to a single hub transfer station, resulting in insufficient transfer capacity of the transfer station and becoming a network bottleneck.

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