A digital modeling method for urban group highway-railway-air integrated transportation network

Abstract

The application provides a kind of urban agglomeration highway railway aviation integrated transport network digital modeling method. By considering the transfer behavior of travelers between various transport modes, the method simulates a complete transfer network to effectively handle the transfer behavior. In this model, the three main transport modes of highway, railway and aviation are particularly considered to build a comprehensive transport transfer model. First, the spatial data and network structure of the transport network are collected, and the real single network is simulated using latitude and longitude data. Second, the transfer behavior of travelers is analyzed to simulate the real travel behavior of travelers between the starting and ending points. Finally, based on the transfer of travelers, the concept of "city layer" is proposed to build a complete urban agglomeration integrated three-dimensional transport network digital model.

Description

Technical Field

[0001] This invention relates to a digital modeling method for integrated urban agglomeration road, rail, and air transportation networks, belonging to the field of infrastructure operation and maintenance in transportation planning and management. Background Technology

[0002] Modern urban agglomerations employ multiple modes of transportation, including highways, railways, and aviation. These modes intertwine to form a complex transportation system. Traditional single-modal transportation modeling methods often struggle to fully consider the interactions and interrelationships between different modes of transport. People may use multiple modes of transportation depending on the context and their needs. With technological advancements, traffic management increasingly requires intelligence and precision. To better meet the diverse needs of travelers, models that comprehensively consider different modes of transport are needed to better understand and predict travel behavior.

[0003] Digital modeling technology is a technique that comprehensively describes and models the characteristics, behavior, formation process, and performance of physical entities using digital means. However, a review of currently available patents and papers reveals that the implementation of integrated three-dimensional transportation network digitization still has many shortcomings in terms of visualization, control logic consistency, and data granularity. Integrated three-dimensional transportation network digital modeling provides a method based on topological data and simulation technology that can more accurately reflect actual traffic conditions, thereby supporting intelligent traffic planning and management. Summary of the Invention

[0004] In view of the shortcomings of the above-mentioned background technology, the present invention proposes a digital modeling method for integrated urban agglomeration road, rail and air transportation networks, which takes into account the transfer routes between different modes of transportation.

[0005] A digital modeling method for integrated urban agglomeration transportation networks (highways, railways, and aviation) includes the following steps:

[0006] Step 1: Collect spatial geometric data of the transportation infrastructure of the integrated three-dimensional transportation network, mainly including three types of transportation infrastructure: highways, railways, and aviation.

[0007] Step 2: Construct a GIS model based on the spatial geometric data of transportation infrastructure;

[0008] Step 3: Divide the GIS model into a point model and a line model. The point model represents the hub nodes for transfers between different modes of transportation, while the line model represents the routes for a single mode of transportation.

[0009] Step 4: Based on the analysis of the connection relationships between points and lines in Steps 2 and 3, construct the adjacency matrix of the single-mode transportation subnet;

[0010] Step 5: Merge all hub nodes in each city to construct an intra-city transportation hub to cover transfer behavior within the city;

[0011] Step 6: Based on the adjacency matrix in Step 4 and the urban internal transportation hubs in Step 5, construct an integrated transfer model for the comprehensive three-dimensional transportation network of the urban agglomeration to meet the travel transfer needs between the three types of transportation networks: highway, railway, and aviation.

[0012] In step 1, the three types of transportation infrastructure include: toll stations and highway sections, ramps and other infrastructure in the expressway network; railway stations and train line facilities in the railway network; and airports and air routes including departure airports and arrival airports in the aviation network.

[0013] In step 2, the geographical distribution characteristics of highway and railway infrastructure are located based on the latitude and longitude of toll stations, railway stations and lines, and the geographical distribution of aviation network infrastructure is located based on the latitude and longitude of airports and the routes between departure airports and destination airports.

[0014] The specific process of step 4 is as follows:

[0015] Step 42: Construct a digital model of the highway network, treating nodes as toll stations and edges as connections between toll stations, denoted as V. f (N f E f W f ):

[0016] V f =V f (N f E f W f )

[0017]

[0018]

[0019]

[0020] Among them, V f Indicates a highway network; N f Represents the set of highway nodes; m1 represents the highway node labeled i; m1 represents N. f The number of internal nodes; E f N represents f The corresponding set of edges; if highway nodes With highway nodes If nodes are connected by edges, then the edges between nodes are... otherwise Wf Then it is represented as weight, and its corresponding set of highway edges E f middle Find the edge and assign its weight to it, denoted as .

[0021] Step 43: Construct a digital model of the railway network, treating nodes as train stations and edges as connections between stations, denoted as V. r (N r E r W r )

[0022] V r =V r (N r E r W r )

[0023]

[0024]

[0025]

[0026] Among them, V r Indicates railway network; N r Indicates a train station meeting point; m1' represents the railway node labeled i; m1' represents N. r The number of internal nodes; E r N represents r The corresponding set of edges; if and If nodes are connected by edges, then the edges between nodes are... otherwise W r This is represented as a weight, corresponding to E. r middle Find the edge and assign its weight to it, denoted as .

[0027] Step 44: Construct a digital model of the aviation network, treating nodes as airports and edges as connections between airports, denoted as V. a (N a E a W a ):

[0028] V a =V a (N a E a W a )

[0029]

[0030]

[0031]

[0032] Among them, V a Indicates aviation network; N a This indicates meeting at the airport. This represents the railway node labeled i; m1″ represents N. a The number of internal nodes; E a N represents a The corresponding set of edges; if and If nodes are connected by edges, then the edges between nodes are... otherwise W a This is represented as a weight, corresponding to E. a middle Find the edge and assign its weight to it, denoted as .

[0033] The construction of the urban internal transportation hub described in step 5 is mainly handled by the "city layer" digital model. In the processing of the comprehensive three-dimensional transportation network digital model, the "city layer" mainly encompasses two elements: nodes and connections, denoted as...

[0034]

[0035]

[0036]

[0037]

[0038]

[0039]

[0040] Among them, V c Indicates the city level; m1 represents a node in city j that belongs to the highway network; m1 represents... The number of internal nodes; Let j represent a node in the city that belongs to the railway network, and m1′ represent... The number of internal nodes; This indicates that j is a node in the aviation network within the city, and m1″ represents... The number of internal nodes; E c Represents the set of edges connected to the city layer; This represents a city-to-city transfer route. If any two of the three types of nodes have a transfer relationship, then... otherwise W c This is represented as a weight, corresponding to E. c middle Find the edge and assign its weight to it, denoted as .

[0041] Compared with the prior art, the present invention, employing the above technical solution, has the following technical effects:

[0042] This invention provides a digital modeling method for integrated urban agglomeration transportation networks combining highways, railways, and aviation. Traditional integrated three-dimensional transportation networks treat different sub-network nodes within a certain range as coupled nodes, typically representing a one-to-one relationship. However, in real-world networks, both railway hubs and airports exhibit one-to-many connections, meaning a single railway hub or airport connects to multiple highway toll stations. Therefore, using traditional integrated three-dimensional transportation networks for multi-network fusion to create a digital model of the integrated three-dimensional transportation network can lead to node connection conflicts, rendering it unsuitable for multi-modal network modeling.

[0043] This invention proposes the concept of a "city layer," establishing connections between city nodes and all internal transportation network nodes, and calculating the travel distance and time for all connections within the city layer, thus achieving one-to-many modeling of nodes in the integrated transportation network. The "city layer" simplifies the structure of the internal urban transportation network, clarifies transfer routes between different modes of transportation, and reduces the complexity of modeling. Attached Figure Description

[0044] Figure 1 This is a flowchart of a digital modeling method for an integrated urban agglomeration road, rail, and air transportation network according to an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of a GIS model of the urban agglomeration highway, railway and aviation transportation sub-network according to an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the digital model of the urban agglomeration highway, railway and aviation sub-network according to an embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of the "city layer" in an embodiment of the present invention;

[0048] Figure 5 This is a schematic diagram of a traveler's transfer based on the "city level" according to an embodiment of the present invention;

[0049] Figure 6 This is a schematic diagram of the integrated three-dimensional transportation network digital modeling method according to an embodiment of the present invention. Detailed Implementation

[0050] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0051] like Figure 1 As shown in the figure, this invention proposes a digital modeling method for integrated urban agglomeration road, rail, and air transportation networks. The method includes the following steps:

[0052] Step 1: Collect spatial geometric data of the transportation infrastructure in the target area, including the following data types.

[0053] The toll station data includes the toll station name, the highway number to which it belongs, and latitude and longitude information.

[0054] Highway section and ramp data include route code, route name, origin and destination names, design speed, number of lanes, mileage, and other data.

[0055] Railway station data includes information such as station name and spatial location (longitude, latitude);

[0056] Railway lines include information such as origin and destination, and mileage;

[0057] Airports include latitude and longitude information;

[0058] The route includes destination airport and departure / on-call information.

[0059] Step 2: Using the ArcGIS platform, construct a GIS model based on the spatial geometry of transportation infrastructure, such as... Figure 2 As shown.

[0060] Step 3: Extract point files and line files from the GIS model and use the L-space model to build the model.

[0061] Transportation stations are treated as nodes, and the connections between stations are represented as edges. This directly reflects the geographical connectivity of actual transportation and provides a comprehensive analysis of the transportation network's infrastructure.

[0062] Step 4: Use the site mapping method to construct a digital model of the adjacency matrix, such as... Figure 3 As shown.

[0063] In the digital model of highway networks, nodes are considered as toll stations, and edges are considered as connections between toll stations, denoted as V. f (N f E f W f ).

[0064] Among them, Vf Indicates a highway network;

[0065] Highway node set

[0066] m1 represents N f The number of internal nodes;

[0067] E f N represents f The set of corresponding edges,

[0068] If node With nodes If two nodes are connected by an edge, then the edge connecting the two nodes is... otherwise

[0069] W f This is represented as a weight, corresponding to E. f middle Find the edge and assign its weight to it, denoted as .

[0070] In the processing of the digital model of railway networks, nodes are regarded as train stations, and edges are regarded as the connections between stations, denoted as V. r (N r E r W r ).

[0071] Among them, V r Represents the railway network;

[0072] Railway node set

[0073] m1 ′ N represents r The number of internal nodes;

[0074] E r N represents r The set of corresponding edges,

[0075] If node With nodes If two nodes are connected by an edge, then the edge between them is... otherwise

[0076] W r This is represented as a weight, corresponding to E. r middle Find the edge and assign its weight to it, denoted as .

[0077] In the processing of digital models of aviation networks, nodes are regarded as airports, and edges are regarded as connections between airports, denoted as V. a (N a E a W a ).

[0078] Among them, V a Indicates aviation network;

[0079] Aviation network node set

[0080] m1 ′′ N represents a The number of internal nodes;

[0081] E a n a The set of corresponding edges,

[0082] If node With nodes If two nodes are connected by an edge, then the edge between them is... otherwise

[0083] W a This is represented as a weight, corresponding to E. aa middle Find the edge and assign its weight to it, denoted as .

[0084] Step 5, selecting the construction of the urban internal transportation hub, is mainly processed by the "city layer" digital model.

[0085] In the processing of the digital model of the integrated three-dimensional transportation network, the "city layer" mainly encompasses two elements: nodes and connections, which are denoted as...

[0086] Among them, V c Indicates the city level;

[0087] This represents a node in city j that belongs to the highway network.

[0088] m1 represents The number of internal nodes;

[0089] This indicates that node j in the city belongs to the railway network.

[0090] m1 ′ express The number of internal nodes;

[0091] This indicates that j is a node in the aviation network within the city.

[0092] m1 ′ 'express The number of internal nodes;

[0093] E c Represents the set of edges connected to the city layer.

[0094] This represents a city-to-city transfer route. If any two of the three types of nodes have a transfer relationship, then... otherwise

[0095] W c This is represented as power. Its corresponding E c middle Find the edge and assign its weight to it, denoted as .

[0096] Based on the point model in step 3, the relationship between points and each city is analyzed, and all hub points within each city are extracted to construct a "city-level" transfer model, such as... Figure 4 , Figure 5 As shown.

[0097] Step 6: Based on the results of steps 4 and 5, construct an integrated transfer model for the urban agglomeration's comprehensive three-dimensional transportation network to facilitate travel transfers between highway, railway, and aviation transportation networks, such as... Figure 6 As shown.

[0098] The above embodiments are merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solutions based on the technical concept proposed in this invention shall fall within the scope of protection of this invention.

Claims

1. A digital modeling method for integrated highway, railway, and aviation transportation networks in urban agglomerations, characterized in that: Includes the following steps: Step 1: Collect spatial geometric data of the integrated three-dimensional transportation network infrastructure, which mainly includes highways, railways, and aviation. Step 2: Construct a GIS model based on the spatial geometric data of transportation infrastructure; Step 3: Divide the GIS model into a point model and a line model. The point model represents the hub nodes for transfers between different modes of transportation, while the line model represents the routes for a single mode of transportation. Step 4: Based on the analysis of the connection relationships between points and lines in Steps 2 and 3, construct the adjacency matrix of the single-mode transportation subnet; Step 5: Merge all hub nodes in each city to construct an intra-city transportation hub to cover transfer behavior within the city; Step 6: Based on the adjacency matrix in Step 4 and the urban internal transportation hubs in Step 5, construct an integrated transfer model for the comprehensive three-dimensional transportation network of the urban agglomeration to meet the needs of travel transfers between highway, railway and air transportation networks. The construction of the urban internal transportation hub in step 5 is mainly handled by the "city layer" digital model; In the processing of the digital model of the integrated three-dimensional transportation network, the "city layer" mainly encompasses two elements: nodes and connections, which are denoted as... : ； ； ； ； ； ； in, Indicates the city level; Represents city A node belonging to the highway network; express The number of internal nodes; Represents city It is a node in the railway network. express The number of internal nodes; Represents city It is a node in the aviation network. express The number of internal nodes; Represents the set of edges connected to the city layer; This represents the city-level transfer route. If any two of the three types of nodes have a transfer relationship, then... ,otherwise ; This is represented as a power, and its corresponding... middle Find the edge and assign its weight to it, denoted as . ; The specific process of step 4 is as follows: Step 41: For all single-mode transportation subnets, establish a network adjacency matrix based on the connection relationships between adjacent nodes; Step 42: Construct a digital model of the highway network, treating nodes as toll stations and edges as connections between toll stations, denoted as... : ； ； ； ； in, Indicates a highway network; Represents the set of highway nodes; Indicates the label is Highway nodes; express The number of internal nodes; express The corresponding set of edges; if highway nodes With highway nodes If nodes are connected by edges, then the edges between nodes are... ,otherwise ; This is represented as the weight, which corresponds to the set of highway edges. middle Find the edge and assign its weight to it, denoted as . ; Step 43: Construct a digital model of the railway network, treating nodes as train stations and edges as connections between stations, denoted as... ; ； ； ； ； in, Represents the railway network; Indicates a train station meeting point; Indicates the label is Railway nodes; express The number of internal nodes; express The corresponding set of edges; if and If nodes are connected by edges, then the edges between nodes are... ,otherwise ; This is represented as a power, and its corresponding... middle Find the edge and assign its weight to it, denoted as . ; Step 44: Construct a digital model of the aviation network, treating nodes as airports and edges as connections between airports, denoted as... : ； ； ； ； in, Indicates aviation network; This indicates meeting at the airport. Indicates the label is Railway nodes; express The number of internal nodes; express The corresponding set of edges; if and If nodes are connected by edges, then the edges between nodes are... ,otherwise ; This is represented as a power, and its corresponding... middle Find the edge and assign its weight to it, denoted as . .

2. The digital modeling method for integrated urban agglomeration highway, railway, and aviation transportation networks according to claim 1, characterized in that, In step 1, the transportation infrastructure includes: toll stations and highway sections and ramps of the expressway network; railway stations and train line facilities of the railway network; and airports and air routes including departure airports and arrival airports of the aviation network.

3. The digital modeling method for integrated urban agglomeration highway, railway, and aviation transportation networks according to claim 2, characterized in that, In step 2, the geographical distribution characteristics of highway and railway infrastructure are located based on the latitude and longitude of toll stations, highway sections, ramps, railway stations and train lines, and the geographical distribution of aviation network infrastructure is located based on the latitude and longitude of airports and the routes between departure and destination airports.

Images