Urban block dense road network three-dimensional organization planning method, system, device and medium

Abstract

This invention discloses a method, system, equipment, and medium for planning the three-dimensional organization of dense road networks in urban blocks. The method includes: identifying effective first-level public interfaces that are accessible, interconnected, and associated with public activities at different elevation levels based on the three-dimensional road network model of the target block; measuring the density and three-dimensional public penetration rate of effective first-level public interfaces based on these interfaces; mapping the effective first-level public interfaces at each elevation level to the three-dimensional road traffic network to construct an interface road network coupling topology map to identify interface continuity discontinuities and weak points in three-dimensional penetration within the effective first-level public interfaces; and simulating the organization and repair of dense road networks based on the density, penetration rate, interface continuity discontinuities, and weak points in three-dimensional penetration to obtain a dense road network organization and repair strategy for the target block. This invention enables the systematic identification of multiple first-level public interfaces, thereby achieving effective planning for the three-dimensional organization and repair of dense road networks in small blocks.

Description

Technical Field

[0001] This invention relates to the fields of computer data processing and urban planning technology, and in particular to a method, system, equipment and medium for three-dimensional organization and planning of dense road networks in urban blocks. Background Technology

[0002] In high-density cities, integrated station-city areas, large-platform development zones, and complex blocks with significant elevation differences, urban public interfaces no longer simply correspond to the traditional "ground floor." Within the same block, there are often multiple effective public access levels, such as ground floors facing upper-level roads, lower-level roads, platforms, connecting corridors, station concourses, and underground passages. As urban spatial organization gradually shifts from single-level planar structures to three-dimensional composite structures, relying solely on ground-level roads and single ground floors for block organization is no longer sufficient to accurately describe the true public interface system and pedestrian-friendly penetration relationships in high-density cities.

[0003] The "small blocks, dense road network" concept, as a mature urban planning approach, emphasizes increasing the openness of blocks, enhancing road connectivity, reducing dead-end roads, and revitalizing streetscapes. However, in the context of vertical cities, simply increasing the number of roads or reducing the block size does not necessarily lead to a truly effective increase in public interfaces. Some interfaces, though adjacent to roads, are inaccessible; some platforms or connecting corridors, though accessible, do not form a true public ground floor; some station halls and underground levels, while hosting a large number of public activities, are not recognized as "effective ground floors" by traditional two-dimensional block models. Therefore, in high-density mixed-use blocks, the key factor truly affecting the viability of "small blocks, dense road networks" is no longer just road density itself, but rather the identification, continuity, and coupling relationship between multiple ground-floor public interfaces and the vertical road network. However, existing technologies related to dense road network small blocks mostly focus on the spatial structure of specific blocks and roads, failing to systematically identify multiple ground-floor public interfaces. This makes it difficult to accurately evaluate the density, discontinuities, and vertical permeability of public interfaces, and to formulate planning strategies that can be directly used for block restoration and vertical organization. Summary of the Invention

[0004] To address the problems existing in the prior art, embodiments of the present invention provide a method, system, device, and medium for planning the three-dimensional organization of dense road networks in urban blocks. It can realize the systematic identification of multiple public interfaces at the top level, thereby enabling the effective planning of the three-dimensional organization and repair of dense road networks in small blocks.

[0005] In a first aspect, embodiments of the present invention provide a method for three-dimensional organization and planning of dense road networks in urban blocks, including: Based on the three-dimensional road network model of the target block, the effective first-level public interfaces in different elevation layers are identified; wherein, the three-dimensional road network model is constructed based on the public interface data of different elevation layers in the target block, and the effective first-level public interfaces are used to indicate the interface layers that are accessible, interconnected and associated with public activities. Based on the effective first-floor public interface, the effective public interface density and three-dimensional public penetration rate of the target block are measured. Map the effective first-level public interfaces at each elevation level to the three-dimensional road traffic network of the target block to construct an interface road network coupling topology map, and identify interface continuity discontinuities and three-dimensional permeability weaknesses in the effective first-level public interfaces based on the interface road network coupling topology map. Based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity discontinuity points, and the three-dimensional penetration weakness points, a dense road network organization and repair simulation is performed to obtain the dense road network organization and repair strategy for the target block.

[0006] As an improvement to the above solution, the method further includes: Obtain public interface data at different elevation levels within the target block; wherein, the public interface data includes: interface nodes of road type, interface nodes of platform type, interface nodes of connecting corridor type, interface nodes of station hall type, interface nodes of underground passage type, and interface nodes of building entrance / exit type. Based on the public interface data and the basic spatial data of the target block, a three-dimensional road network model of the target block is constructed. The three-dimensional road network model is used to indicate the three-dimensional road network topology formed by the connection relationships and elevation layer distribution of different types of interface nodes within the target block.

[0007] As an improvement to the above scheme, based on the three-dimensional road network model of the target block, effective first-floor public interfaces at different elevation levels are identified, including: Determine whether each interface node in the three-dimensional road network model meets the preset first-layer interface conditions; wherein, the first-layer interface conditions include: the interface node has public accessibility, is connected to the three-dimensional public passage network, and is associated with public activities; Interface nodes that meet the conditions of the first-level interface are identified as valid first-level public interfaces. The effective first-floor public interfaces include: effective first-floor public interfaces of upper-level road type, effective first-floor public interfaces of lower-level road type, effective first-floor public interfaces of platform type, effective first-floor public interfaces of connecting corridor type, effective first-floor public interfaces of station hall type, and effective first-floor public interfaces of underground passage type.

[0008] As an improvement to the above scheme, based on the effective first-floor public interface, the effective public interface density and three-dimensional public penetration rate of the target block are measured, including: The density of the effective public interface is calculated based on the first accessible plane information of the effective first-level public interface and the second accessible plane information of the target block; Based on the feasible paths in the interface road network coupling topology map, determine the first shortest travel distance from any location point in the target block to each of the effective first-level public interfaces; The three-dimensional public penetration rate is calculated based on the location points where the first shortest travel distance is less than a preset travel reach threshold and the second reachable plane information.

[0009] As an improvement to the above scheme, the effective first-level public interfaces at each elevation level are mapped to the three-dimensional road traffic network of the target block, constructing an interface road network coupled topology map, including: For each of the effective first-level public interfaces, the effective first-level public interface is mapped to the three-dimensional road traffic network, and at least one feasible path and public mode of transportation connecting the effective first-level public interface and the three-dimensional road traffic network are identified. Under the aforementioned public travel mode, calculate the travel cost for each feasible path; The passage cost of each feasible path is compared and analyzed with a preset cost threshold, and the coupling reachability relationship between the effective first-level public interface and the three-dimensional road traffic network is constructed based on feasible paths whose passage cost is not higher than the cost threshold. Based on all the effective first-level common interfaces as nodes and the coupling reachability relationships of each effective first-level common interface, construct an interface road network coupling topology diagram.

[0010] As an improvement to the above scheme, based on the interface road network coupling topology diagram, the interface continuity breakpoints and three-dimensional penetration weaknesses in the effective first-layer common interface are identified, including: Based on the reachable paths between any two effective first-layer common interfaces in the interface road network coupling topology graph, a continuous interface topology graph is constructed; wherein, the reachable path includes at least one feasible path; Based on the connectivity changes after blocking any one of the effective first-layer common interfaces in the continuous topology graph of the interface, determine the interface continuity breakpoints in the effective first-layer common interfaces. Based on the change in three-dimensional public permeability after blocking any one of the effective first-layer public interfaces in the interface road network coupling topology, the three-dimensional permeability weak points in the effective first-layer public interfaces are determined.

[0011] As an improvement to the above scheme, based on the connectivity change after blocking any one of the effective first-layer common interfaces in the continuous interface topology graph, the interface continuity breakpoints in the effective first-layer common interfaces are determined, including: Calculate the number of first connected components based on the reachable paths between two effective first-layer common interfaces in the continuous topology graph of the interface. The interface continuous topology graph is updated by blocking any one of the valid first-layer common interfaces in the interface continuous topology graph; Based on the reachable path between two effective first-layer common interfaces in the updated interface continuous topology graph, calculate the number of second connected components after blocking the corresponding effective first-layer common interface. Based on the number of the first connected components and the number of the second connected components, calculate the interface continuity loss of the effective first-layer common interface that is blocked. When the interface continuity loss is greater than a preset first loss threshold, the effective first-layer common interface to be blocked is determined as the interface continuity breakpoint.

[0012] As an improvement to the above scheme, based on the change in three-dimensional public permeability after blocking any one of the effective first-layer public interfaces in the interface road network coupling topology, the three-dimensional permeability weak points in the effective first-layer public interfaces are determined, including: By blocking any one of the effective first-level public interfaces in the interface road network coupling topology map, the second shortest travel distance from any location point in the target block to the remaining effective first-level public interfaces is determined. Based on the location points where the second shortest passage distance is less than the preset passage reach threshold and the second reachable plane information of the target block, the restricted three-dimensional public penetration rate after blocking the corresponding effective first-floor public interface is calculated; Based on the restricted three-dimensional public permeability and the three-dimensional public permeability, calculate the permeation loss of the effective first-layer public interface to be blocked; When the penetration loss is greater than the preset second loss threshold, the effective first-layer common interface of the blockage is determined as a weak point in three-dimensional penetration.

[0013] As an improvement to the above scheme, a dense road network organization and repair simulation is performed based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity discontinuity points, and the three-dimensional penetration weakness points to obtain a dense road network organization and repair strategy for the target block, including: Based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity loss corresponding to the interface continuity breakpoint, and the penetration loss corresponding to the three-dimensional penetration weakness point, the type of interface structural interruption existing in the target block is determined. Simulate corresponding tissue repair actions for different types of interface structural interruptions; Calculate the first increment of the effective common interface density after each tissue repair action is performed; Calculate the second increment of the three-dimensional public penetration rate after each tissue repair action is performed; Based on the second increment and the action cost of the corresponding tissue repair action, calculate the unit cost repair efficiency after each tissue repair action is executed. Based on the second increment, second increment, and unit cost repair efficiency of each organizational repair action, all organizational repair actions are prioritized to obtain the dense road network organizational repair strategy for the target block.

[0014] Secondly, embodiments of the present invention provide a three-dimensional organization and planning system for dense urban street networks, comprising: The first-level interface recognition module is used to identify effective first-level public interfaces at different elevation levels based on the three-dimensional road network model of the target block; wherein, the three-dimensional road network model is constructed based on public interface data at different elevation levels within the target block, and the effective first-level public interfaces are used to indicate interface layers that are accessible, interconnected, and associated with public activities. The first-layer interface measurement module is used to measure the effective public interface density and three-dimensional public penetration rate of the target block based on the effective first-layer public interface. The connectivity defect identification module is used to map the effective first-level public interfaces in each elevation level to the three-dimensional road traffic network of the target block, construct an interface road network coupling topology map, and identify interface continuity breakpoints and three-dimensional permeability weak points in the effective first-level public interfaces based on the interface road network coupling topology map. The organization repair simulation module is used to simulate the organization repair of dense road networks based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity discontinuity points, and the three-dimensional penetration weakness points, so as to obtain the dense road network organization repair strategy of the target block.

[0015] Thirdly, embodiments of the present invention provide an urban street dense road network three-dimensional organization planning device, comprising: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the urban street dense road network three-dimensional organization planning method as described in any one of the first aspects.

[0016] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to perform the urban block dense road network three-dimensional organization planning method as described in any one of the first aspects.

[0017] Compared to existing technologies, this invention provides a method, system, device, and medium for planning the three-dimensional organization of dense road networks in urban blocks. First, based on a three-dimensional road network model of the target block, it identifies effective first-level public interfaces at different elevation levels. The three-dimensional road network model is constructed based on public interface data at different elevation levels within the target block, and the effective first-level public interfaces indicate accessible, interconnected interface layers associated with public activities. Then, using these effective first-level public interfaces as a benchmark, it measures the density of effective public interfaces and the three-dimensional public penetration rate of the target block. Finally, it maps the effective first-level public interfaces at each elevation level to the three-dimensional road traffic network of the target block, constructing an interface road network coupling topology diagram, and based on the... The interface road network coupling topology diagram identifies interface continuity discontinuities and three-dimensional permeability weaknesses in the effective first-level public interfaces. Then, based on the effective public interface density, the three-dimensional public permeability, the interface continuity discontinuities, and the three-dimensional permeability weaknesses, a dense road network organization and repair simulation is performed to obtain the dense road network organization and repair strategy for the target block. This embodiment of the invention, by identifying the effective first-level public interfaces at different elevation levels in the target block, can achieve systematic identification of multiple first-level public interfaces. Combining the effective public interface density, the three-dimensional public permeability, and the interface continuity discontinuities / three-dimensional permeability weaknesses, the organization and repair action sequencing planning for the three-dimensional small block dense road network can achieve effective planning for the three-dimensional organization and repair of the small block dense road network. Attached Figure Description

[0018] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a flowchart of a three-dimensional organization and planning method for dense road networks in urban blocks, provided by an embodiment of the present invention; Figure 2 This is a structural block diagram of a three-dimensional organization and planning system for dense urban street networks provided in an embodiment of the present invention; Figure 3 This is a structural block diagram of a three-dimensional organization and planning device for dense urban street networks provided in an embodiment of the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It is understood that the various numerical designations used in the embodiments of this invention are merely for descriptive convenience and are not intended to limit the scope of this application. The order of the process numbers does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

[0022] In embodiments of the invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element. The term "a plurality or several" refers to two or more.

[0023] See Figure 1 , Figure 1 This is a flowchart illustrating a method for three-dimensional organization and planning of dense road networks in urban blocks, provided by an embodiment of the present invention. The method specifically includes: S11: Based on the three-dimensional road network model of the target block, identify the effective first-floor public interfaces at different elevation levels; The three-dimensional road network model is constructed based on public interface data at different elevation levels within the target block, and is used to indicate the three-dimensional road network topology formed by the connection relationships and elevation level distribution of different types of interface nodes within the target block; the effective first-level public interface is used to indicate the interface layer that is accessible, interconnected, and associated with public activities. Furthermore, the method also includes: Obtain public interface data at different elevation levels within the target block; Based on the public interface data and the basic spatial data of the target block, a three-dimensional road network model of the target block is constructed. The public interface data includes: the ground floor interface within the target block area, interface nodes of different elevation levels for road types (referred to as road layers or road nodes), interface nodes of platform types (referred to as platform layers or platform nodes), interface nodes of connecting corridor types (referred to as connecting corridor layers or connecting corridor nodes), interface nodes of station hall types (referred to as station hall layers or station hall nodes), interface nodes of underground passage types (referred to as underground passage layers or underground passage nodes), and interface nodes of building entrances and exits types (referred to as building entrances and exits or building entrances and exits nodes). The basic spatial data includes at least one of the following: Land parcel boundary data, such as the boundary coordinates of each parcel, land parcel function / ownership, etc.; Building foundation data, such as the building's ground floor area, building foundation outline coordinates, building foundation boundary, distance between the building foundation and the plot boundary, building foundation elevation, etc. Elevation data, such as the elevation of roads / platforms / connecting corridors / station halls / underground passages on each floor, and the undulating elevation of vertical transition nodes (such as stairs / escalators / ramps); Road system data, such as the alignment, width, direction, intersections, slope, and road ancillary facilities of urban arterial roads, secondary arterial roads, branch roads, pedestrian walkways, non-motorized vehicle lanes, bus lanes, and transfer passages within the target block, can form a three-dimensional road traffic network; Connectivity node data, such as the location, coordinates, and connectivity relationships of road intersections, building entrances and exits, connecting corridors, underground passage intersections, rail transit transfer nodes, platform connecting nodes, and vertical transformation nodes (such as stairs / escalators / ramps).

[0024] Public activity interface data, such as boundary interfaces, open interfaces, enclosed interfaces, sight interfaces, and pedestrian flow connection interfaces of public activity areas such as squares, green spaces, pedestrian streets, gathering spaces, waterfront spaces, and public courtyards, that is, interface data related to public activities / services.

[0025] Based on the aforementioned public interface data and street data, a basic data system for high-density three-dimensional street blocks can be aggregated. To uniformly represent the hierarchical structure and circulation relationships within the target street block, a directed topological graph G with hierarchical attributes can be constructed based on this basic data system as a three-dimensional road network model of the target street block, specifically represented as follows: (1); Wherein, V is the set of interface nodes, including at least road nodes, platform nodes, corridor nodes, station hall nodes, underground passage nodes, and building entrance / exit nodes; E is the set of connection relationships, including at least horizontal passage edges (connection relationships between different nodes within the same elevation level, such as sidewalks and roads), vertical transition edges (connection relationships between facilities connecting different elevation levels, such as stairs / escalators / elevators / ramps), and inter-level connection edges (connection relationships between facilities connecting different levels, such as corridors, sky bridges, overpasses, and underground passages); L is the set of levels, used to represent different elevation levels.

[0026] The above representation can provide a unified structural basis for subsequent effective first-layer public interface identification and interface-road network coupling relationship calculation.

[0027] The effective first-floor public interfaces include: effective first-floor public interfaces of upper-level road type, effective first-floor public interfaces of lower-level road type, effective first-floor public interfaces of platform type, effective first-floor public interfaces of connecting corridor type, effective first-floor public interfaces of station hall type, and effective first-floor public interfaces of underground passage type.

[0028] S12: Based on the effective first-floor public interface, measure the effective public interface density and three-dimensional public penetration rate of the target block; Among them, the density of effective public interfaces can reflect the supply of accessible, interconnected, and public-activity-related ground-level interfaces in the target block; the lower the density of effective public interfaces, the smaller the effective public interface data, and the insufficient supply of effective public interfaces; the higher the density of effective public interfaces, the more effective public interface data, and the more abundant the supply of effective public interfaces.

[0029] The vertical penetration rate of public spaces reflects the coupling between the effective first-level public interface and the road network in the vertical direction. The lower the vertical penetration rate, the weaker the connectivity of the effective first-level public interface in the vertical dimension and the insufficient coverage of the vertical pedestrian network. The higher the vertical penetration rate, the more fully the vertical public space is penetrated.

[0030] S13: Map the effective first-level public interfaces in each elevation level to the three-dimensional road traffic network of the target block, construct an interface road network coupling topology map, and identify interface continuity discontinuities and three-dimensional permeability weaknesses in the effective first-level public interfaces based on the interface road network coupling topology map. Among them, the interface continuity breakpoint is used to indicate the effective first-level common interface that causes the continuity of the common interface to be interrupted. Three-dimensional permeability weakness points are used to indicate effective ground floor public interfaces that cause poor vertical public space permeability and obstructed three-dimensional pedestrian connectivity.

[0031] S14: Based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity discontinuity points, and the three-dimensional penetration weakness points, a dense road network organization and repair simulation is performed to obtain the dense road network organization and repair strategy for the target block.

[0032] This invention constructs a three-dimensional road network model of a target street block, identifies effective first-floor public interfaces at different elevation levels, and, compared to traditional solutions that only identify the "ground first floor," achieves systematic identification of multiple first-floor public interfaces, improving the accuracy of identifying effective first-floor public interfaces. Then, using the identified effective first-floor public interface locations as benchmarks, it measures the density of effective public interfaces, the three-dimensional public penetration rate, and the continuity breaks / weak points of the interfaces in the target street block. Furthermore, it simulates and plans the organization and repair actions for the dense road network of small three-dimensional blocks, obtaining a scientific and implementable dense road network organization and repair strategy. This enables precise and efficient planning for the three-dimensional organization and repair of dense road networks in small blocks, improving the scientific nature and implementation efficiency of dense road network organization and repair action planning, and filling the technological gap in existing urban planning that lacks a three-dimensional coupled repair technology system.

[0033] In one optional embodiment, based on the three-dimensional road network model of the target block, the effective first-floor public interfaces at different elevation levels are identified, including: Determine whether each interface node in the three-dimensional road network model meets the preset first-layer interface conditions; wherein, the first-layer interface conditions include: the interface node has public accessibility, is connected to the three-dimensional public passage network, and is associated with public activities; Interface nodes that meet the conditions of the first-level interface are identified as valid first-level public interfaces.

[0034] For example, based on the three-dimensional road network model of the target block constructed above, interface nodes that are accessible, interconnected and associated with public activities in each elevation level are identified to form a set of multiple public interfaces at the top level.

[0035] The objects of interface recognition include not only the traditional ground floor interface, but also effective ground floor public interfaces facing the upper and lower roads, platforms, connecting corridors, station halls, and underground passages.

[0036] Let the set of candidate interface nodes be B = {b1, b2, ..., b}. i , ..., b m Specifically, this can be obtained from the set V of interface nodes in the three-dimensional road network model of the target block. Each interface node b... i (i=1, 2, ..., m, where m is the number of interface nodes) carries its corresponding elevation layer λ(b i ), Interface area |b i| and interface attributes, etc. Interface attributes include, but are not limited to: interface function attributes (such as whether it is oriented towards public activities / services, etc.), interface status attributes (such as continuous, breakpoint, closed, open, etc.), and interface connectivity attributes (such as whether it is accessible, connectable, and directly connected to the three-dimensional road traffic network (referred to as road network, etc.).

[0037] A set-based determination method based on accessibility, connectivity, and public relevance is adopted. The first-layer interface is defined by possessing public accessibility, connectivity with a three-dimensional public access network, and relevance to public activities. Interface nodes meeting these conditions are selected from a candidate interface node set B as valid first-layer public interfaces, resulting in a set B of valid public interfaces. eff Specifically, it is expressed as follows: (2); in, Represents interface node b i Does it have public accessibility? =1 indicates that interface node b i It has public accessibility. =0 indicates that interface node b i It lacks public accessibility; Represents interface node b i Whether it can form a continuous connection with the road network, that is, whether it has connectivity. =1 indicates that interface node b i It is permeable. =0 indicates that interface node b i It lacks permeability; Represents interface node b i Whether it is associated with public activities / services =1 indicates that interface node b i Associated with public activities / services =0 indicates that interface node b i Not associated with public activities / services.

[0038] Only interface nodes that simultaneously meet the above conditions are identified as valid public first-level interfaces. By using the above combination of accessibility, connectivity, and public relevance to determine the validity of interfaces, it is possible to accurately distinguish between "real public first-level interfaces" and "false first-level interfaces," thus avoiding misjudging interfaces that are merely formally street-facing but are actually closed, inaccessible, or do not undertake public activities as valid public first-level interfaces and improving the accuracy of identifying valid public first-level interfaces.

[0039] In one optional embodiment, using the effective first-floor public interface as a benchmark, the effective public interface density and three-dimensional public penetration rate of the target block are measured, including: The density of the effective public interface is calculated based on the first accessible plane information of the effective first-level public interface and the second accessible plane information of the target block; Based on the feasible paths in the interface road network coupling topology map, determine the first shortest travel distance from any location point in the target block to each of the effective first-level public interfaces; The three-dimensional public penetration rate is calculated based on the location points where the first shortest travel distance is less than a preset travel reach threshold and the second reachable plane information.

[0040] In this embodiment of the invention, based on the identified set of valid public interfaces B eff This involves calculating the effective public interface density and three-dimensional public penetration rate within the target block. It should be noted that the core of calculating the effective public interface density and three-dimensional public penetration rate within the target block is not to count the total road length or the number of blocks, but rather to measure the distribution of "accessible, interconnected, and coupled with public paths" at different levels.

[0041] For example, for the entire target block area A blk The effective public interface density is defined as: (3); in, Indicates the total area of ​​the target block. Indicates the effective first-level public interface b i Interface area, effective common interface density It represents the ratio of the total number of accessible, interconnected, and public-activity-supporting interfaces within the target block to the total area of ​​the target block.

[0042] Furthermore, to reflect the multi-layered characteristics, the effective public interface density at each elevation level of the target block can be defined. The effective common interface density of elevation layers is specifically represented as follows: (4); in, Indicates the first of the target blocks The area of ​​the block corresponding to the elevation level (i.e., the area corresponding to the accessible plane range of the block); it can be understood that the sum of the block areas corresponding to all elevation levels is equal to the total area of ​​the target block.

[0043] To express three-dimensional permeability, the shortest travel distance from any point x in the target block to the nearest effective first-floor public interface (i.e., the first shortest distance mentioned above) is further defined as d(x, B). eff If the target street's vertical public penetration rate is calculated as follows: (5); in, This indicates the service radius or walking distance of the effective first-floor public interface. This represents the area formed by points whose shortest travel distance to the nearest effective first-level public interface is less than the service radius or walking distance of that effective first-level public interface. (3D public penetration rate) Indicates at a given threshold The percentage of space within the target block that is accessible from the effective public interface represents the service coverage of the effective ground-level public interface to the internal space of the target block.

[0044] By combining the two indicators of effective public interface density and three-dimensional public penetration rate, areas where the two-dimensional road network appears dense but the actual public interface penetration is still insufficient can be accurately identified. For example, low effective public interface density (e.g., effective public interface density below a preset first density threshold) + low penetration rate (e.g., three-dimensional public penetration rate below a preset penetration threshold) indicates that the main problem in the target block is insufficient supply of "effective public interface (i.e., effective first-level public interface)"; high density (e.g., effective public interface density above a preset second density threshold) + low penetration rate indicates that the number of "effective public interfaces" is not small and the supply is sufficient, but the "effective public interfaces" are poorly coupled with the road network, the interface distribution is unbalanced, or there are key breaks.

[0045] In one optional embodiment, the effective first-level public interfaces at each elevation level are mapped to the three-dimensional road traffic network of the target block to construct an interface road network coupled topology map, including: For each of the effective first-level public interfaces, the effective first-level public interface is mapped to the three-dimensional road traffic network, and at least one feasible path and public mode of transportation connecting the effective first-level public interface and the three-dimensional road traffic network are identified. Under the aforementioned public travel mode, calculate the travel cost for each feasible path; The passage cost of each feasible path is compared and analyzed with a preset cost threshold, and the coupling reachability relationship between the effective first-level public interface and the three-dimensional road traffic network is constructed based on feasible paths whose passage cost is not higher than the cost threshold. Based on all the effective first-level common interfaces as nodes and the coupling reachability relationships of each effective first-level common interface, construct an interface road network coupling topology diagram.

[0046] In this embodiment of the invention, the identified effective first-level public interfaces are mapped to the three-dimensional road / channel network (i.e., the three-dimensional road traffic network). The road level, feasible path (i.e., the path to the effective first-level public interface), and public mode of transport (such as walking, cycling, etc.) corresponding to each type of effective first-level public interface are identified, forming an interface-road network coupling relationship model. For example, for any effective first-level public interface b... i Define the coupling reachability relationship between the path p of the three-dimensional road traffic network and the path p. for: (6); Where P represents the set of feasible paths in the target block, | represents a separator, and p connects the three-dimensional road network with b. i Represents a three-dimensional road traffic network and b i Connect via path p; This represents the cost (e.g., length) of a feasible path p. This represents the threshold at which public access is acceptable. Indicates the cost of passage Less than or equal to the cost threshold The set of paths p connecting the three-dimensional road traffic network and bi, if (Empty set) indicates that the effective first-level common interface b is valid. i It has a real coupling relationship with the three-dimensional road traffic network, and is not just visually adjacent to the road.

[0047] Furthermore, based on the coupling reachability relationships between the effective first-layer public interface and the three-dimensional road traffic network obtained above, a directed topology graph is constructed to obtain the interface road network coupled topology graph G. BI Specifically, it is expressed as follows: (7); Among them, R BI This represents the set of coupling reachability relationships between the effective first-level public interface and the corresponding reachable path or road level, i.e. This diagram structure can be used to illustrate the public connection mechanisms between each effective ground floor public interface and different road levels, platform levels, station hall levels, and underground passage levels.

[0048] In an optional embodiment, based on the interface road network coupling topology diagram, identifying interface continuity breakpoints and three-dimensional penetration weaknesses in the effective first-layer common interface includes: Based on the reachable paths between any two effective first-layer common interfaces in the interface road network coupling topology graph, a continuous interface topology graph is constructed; wherein, the reachable path includes at least one feasible path; Based on the connectivity changes after blocking any one of the effective first-layer common interfaces in the continuous topology graph of the interface, determine the interface continuity breakpoints in the effective first-layer common interfaces. Based on the change in three-dimensional public permeability after blocking any one of the effective first-layer public interfaces in the interface road network coupling topology, the three-dimensional permeability weak points in the effective first-layer public interfaces are determined.

[0049] Specifically, based on the connectivity changes after blocking any one of the effective first-layer common interfaces in the continuous topology graph, the interface continuity breakpoints in the effective first-layer common interfaces are determined, including: Calculate the number of first connected components based on the reachable paths between two effective first-layer common interfaces in the continuous topology graph of the interface. The interface continuous topology graph is updated by blocking any one of the valid first-layer common interfaces in the interface continuous topology graph; Based on the reachable path between two effective first-layer common interfaces in the updated interface continuous topology graph, calculate the number of second connected components after blocking the corresponding effective first-layer common interface. Based on the number of the first connected components and the number of the second connected components, calculate the interface continuity loss of the effective first-layer common interface that is blocked. When the interface continuity loss is greater than a preset first loss threshold, the effective first-layer common interface to be blocked is determined as the interface continuity breakpoint.

[0050] Specifically, based on the change in three-dimensional public permeability after blocking any one of the effective first-layer public interfaces in the interface road network coupling topology, the three-dimensional permeability weak points in the effective first-layer public interfaces are determined, including: By blocking any one of the effective first-level public interfaces in the interface road network coupling topology map, the second shortest travel distance from any location point in the target block to the remaining effective first-level public interfaces is determined. Based on the location points where the second shortest passage distance is less than the preset passage reach threshold and the second reachable plane information of the target block, the restricted three-dimensional public penetration rate after blocking the corresponding effective first-floor public interface is calculated; Based on the restricted three-dimensional public permeability and the three-dimensional public permeability, calculate the permeation loss of the effective first-layer public interface to be blocked; When the penetration loss is greater than the preset second loss threshold, the effective first-layer common interface of the blockage is determined as a weak point in three-dimensional penetration.

[0051] This invention further identifies interface continuity breakpoints / three-dimensional penetration weaknesses in the effective first-layer public interfaces, which, together with the effective public interface density and three-dimensional public penetration rate obtained above, constitute a "quantity-reach-connection" diagnostic framework. Specifically, the effective public interface density is used to determine whether the supply of public interfaces is sufficient, the three-dimensional public penetration rate is used to determine the coverage level of public interfaces on the internal space of the block, and interface continuity breakpoints and penetration weaknesses are used to determine whether there are structural interruptions in the public interface network. Therefore, it is possible to distinguish whether the specific problems existing in the block are interface supply insufficiency problems, interface coupling insufficiency problems, or key breakpoint-dominated problems, providing a basis for subsequent organizational remediation actions.

[0052] In a three-dimensional public interface network (i.e., the effective public interface set B) eff ) and the coupling relationship of the three-dimensional road network (i.e., the interface road network coupling topology diagram G above) BI Based on this, we identify key breakpoints that disrupt the continuity of public interfaces and weak points that result in insufficient pedestrian penetration in the street. These key breakpoints / weak points may manifest as closed ground floor platforms, interrupted connecting corridors, broken underground level interfaces, disconnected ground floor levels, and separation between the station hall level and the street level.

[0053] The specific process for identifying interface continuity breakpoints is as follows: Set of effective public interfaces B eff In this graph, valid first-level common interfaces are used as nodes, and a common reachable path exists between two valid first-level common interfaces as a connecting edge. The path cost (e.g., total path length) of this reachable path does not exceed a preset path cost threshold. A directed topology graph is then constructed, resulting in a continuous interface topology graph G. int Specifically, it is expressed as follows: (8); Among them, E int This represents the set of connecting edges between two valid first-level common interfaces.

[0054] Furthermore, define the continuous topology graph G of the interface. int The number of connected components is K(G) int ), that is, the number of the first connected components mentioned above, is used to represent the total number of independent and unconnected interface areas in the target block.

[0055] If a valid first-level common interface q is blocked (e.g., removed or closed), a new continuous topology graph of interfaces is obtained. Then the interface continuity loss of the effective first-level common interface q C q for: (9); in, This represents the number of connected components after removing a certain valid first-level common interface q, which is the number of the second connected components mentioned above. K(G) int () represents the initial continuous topology graph G before removing a certain valid first-level common interface q. int The number of connected components.

[0056] When interface continuity is lost C q Significant losses, such as interface continuity loss. C q If the value is greater than the first loss threshold, it indicates that the effective first-layer common interface q is a critical breakpoint in interface continuity (i.e., an interface continuity breakpoint).

[0057] The specific process for identifying weak points in three-dimensional penetration is as follows: For weak points in three-dimensional permeability, after blocking (e.g., removing or closing) a certain effective first-layer common interface q, the three-dimensional common permeability can be recalculated based on the above formula (5). The penetration loss after blocking a certain effective first-layer common interface q is then... for: (10); in, The larger the interface, the more critical it is to the overall three-dimensional permeability of the street, such as when permeation loss... If the value is greater than the second loss threshold, it indicates that the effective first-layer public interface q is a weak point in three-dimensional penetration.

[0058] Using the above methods, we can accurately locate interface continuity breakpoints and common penetration weaknesses, identify key locations that are both interface continuity breakpoints and common penetration weaknesses, and effectively determine whether a continuous three-dimensional common network is formed between interfaces.

[0059] In one optional embodiment, a dense road network organization and repair simulation is performed based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity discontinuities, and the three-dimensional penetration weaknesses to obtain a dense road network organization and repair strategy for the target block, including: Based on the effective public interface density, the three-dimensional public penetration rate, and the interface continuity loss corresponding to the interface continuity breakpoint, the type of interface structural interruption existing in the target block is determined. Simulate corresponding tissue repair actions for different types of interface structural interruptions; Calculate the first increment of the effective common interface density after each tissue repair action is performed; Calculate the second increment of the three-dimensional public penetration rate after each tissue repair action is performed; Based on the second increment and the action cost of the corresponding tissue repair action, calculate the unit cost repair efficiency after each tissue repair action is executed. Based on the second increment, second increment, and unit cost repair efficiency of each organizational repair action, all organizational repair actions are prioritized to obtain the dense road network organizational repair strategy for the target block.

[0060] In this embodiment of the invention, based on the diagnostic framework of "quantity-reach-connection" consisting of the effective public interface density, three-dimensional public penetration rate, and interface continuity breakpoints / three-dimensional penetration weak points obtained above, the type of interface structural interruption existing in the target block is determined, and a joint diagnosis is performed through the three indicators of effective public interface density, three-dimensional public penetration rate, and interface continuity loss.

[0061] The types of interface structural interruptions include, but are not limited to: Insufficient supply of public interfaces: Low density (e.g., effective public interface density is lower than the preset first density threshold) + low penetration rate (e.g., three-dimensional public penetration rate is lower than the preset penetration threshold) indicates that the main problem in the target block is the insufficient supply of "effective public interfaces (i.e., effective first-floor public interfaces)".

[0062] To address insufficient interface supply, the number of "effective public interfaces" can be increased by breaking through interface continuity bottlenecks and adding new effective public interfaces. For example, the following organizational repair actions can be performed: By transforming closed interface nodes into accessible ones, opening up the first floor of the platform, and connecting corridors, the density of effective public interfaces can be increased.

[0063] Insufficient interface coupling: High density (such as the density of effective public interfaces is higher than the preset second density threshold) + low penetration rate indicates that the number of "effective public interfaces" is not small and the supply is sufficient, but the "effective public interfaces" are poorly coupled with the road network, the interface distribution is unbalanced or there are key breaks.

[0064] For areas with insufficient interface coupling, transfer, intersection, and gathering spaces can be added at points with weak three-dimensional permeability. This could include adding underpasses or overpasses, or supplementing vertical connection nodes (such as escalators, stairs, and vertical corridors) to improve the coupling between the "effective public interface" and the road network. For example, the following organizational repair actions can be implemented: By adding underpasses and overpasses to pedestrian walkways at points with weak permeability, and supplementing vertical connection nodes (escalators, stairs, vertical corridors), the interface and road network are strengthened, and a three-dimensional coupling between above-ground and underground is achieved.

[0065] Key breakpoint dominance: medium density (e.g., effective common interface density is higher than the first density threshold and lower than the second density threshold) / high density + large interface continuity loss (e.g., interface continuity loss is higher than the first loss threshold: indicating that the problem is not "insufficient interfaces", but "key locations (interface continuity breakpoints / weak points in three-dimensional penetration) cause interface network discontinuity".

[0066] For interface network discontinuities dominated by critical breakpoints, interface nodes that are breakpoints in interface continuity, weak points in three-dimensional penetration, or both can be repaired. For example, the following tissue repair actions can be performed: By directly connecting the corridors and adding pedestrian crossings at the points where the interface continuity breaks, network connectivity is restored; Add underpasses and overpasses to pedestrian walkways and supplement vertical connection nodes at weak points in three-dimensional permeability to enhance vertical transportation and cross-level connections.

[0067] It is understood that a mapping table can be established between interface structural interruption types and tissue repair actions to record various preset tissue repair actions corresponding to different interface structural interruption types. The tissue repair actions can be set based on experience and are not specifically limited in this embodiment of the invention.

[0068] Based on interface connection breakpoints and weak points in three-dimensional permeability, a pre-defined mapping table between structural interruption types of vertical interfaces and organizational repair actions can be used to output organizational repair actions for each interface connection breakpoint and / or weak point in three-dimensional permeability. These organizational repair actions include, but are not limited to: opening up connecting corridors, opening up the ground floor of the platform, adding underpasses or overpasses, supplementing vertical connection nodes, transforming enclosed interfaces into public ground floors, and improving the connection between the station hall level and the street level (e.g., adding vertical connection nodes, opening up underground passages, etc.).

[0069] Then, the Pareto algorithm is used to prioritize the tissue repair actions at various interface connection breakpoints and / or three-dimensional penetration weak points output by the system.

[0070] For example, the system simulates the tissue repair process at various interface connection breakpoints and / or weak points in three-dimensional penetration, and remeasures indicators such as the effective public interface set and the three-dimensional public penetration rate.

[0071] Suppose that after a repair action 'a' is performed on a certain organization, the effective first-floor public interface data of the target block changes, and the corresponding effective public interface set becomes... The penetration rate of three-dimensional public spaces has become For specific calculations, please refer to the above text, which will not be repeated here.

[0072] The interface increment brought about by the organization's repair action 'a' (The first increment of the effective common interface density) is specifically: (11); in, This represents the effective ground floor public interface area of ​​the target block after the implementation of organizational repair action a.

[0073] The tissue repair action a resulted in improved three-dimensional penetration. (That is, the second increment of the three-dimensional public penetration rate) specifically refers to: (12); in, This indicates the three-dimensional public penetration rate of the target block after the implementation of organizational repair action a.

[0074] Furthermore, the cost of tissue repair action a can be introduced. a Calculate the unit cost repair efficiency E after the implementation of tissue repair action a. a Specifically, it is expressed as follows: (13); The cost of each tissue repair action can be predefined. By establishing a mapping table between tissue repair actions and their costs, the cost of different tissue repair actions can be determined based on this mapping table.

[0075] Then, through the repair actions of different tissues , and By comparing the different approaches, a priority ranking of the organizational repair actions for the dense road network of small blocks can be established, resulting in the final dense road network organizational repair strategy for the target block. The specific ranking process is as follows: First, screen for feasible tissue repair actions.

[0076] For example, delete the tissue repair actions that do not meet the preset implementation conditions, and only retain the tissue repair actions that meet the preset implementation conditions; The implementation conditions include, but are not limited to: The conditions for opening up property rights must be met, such as clear ownership and no ownership disputes, the property owner agreeing to open to the public, the boundaries of use, management responsibilities and access rights after opening being clearly defined, and the scope of opening not involving areas that are prohibited from opening due to confidentiality, security, or cultural relic protection. The structural conditions for modification include: the building structure's load-bearing capacity meets the requirements for the modification loads of new connecting corridors, escalators, stairs, openings, etc.; there is no risk of damage to key components of the main structure (load-bearing walls, core tube, main frame columns) at the modification location; the underground space, top slab, and bottom slab are suitable for modification construction; the existing structural safety is not affected; and the current structural design specifications are met. Minimum clear width conditions, such as the clear width of pedestrian passages, corridors, and entrances and exits not being less than the minimum value specified in the code, the effective passage width of vertical transportation (stairs and escalators) meeting the needs of pedestrian evacuation and daily use, the clear width of interface openings, pedestrian crossings, and underpasses meeting the requirements of pedestrian passage and fire evacuation, and no local narrowing causing passage bottlenecks at elevation differences, turns, and intersections, etc. Fire safety conditions, such as open interfaces, connecting corridors and passages being included in fire evacuation routes, meeting the requirements for evacuation distance and evacuation width, fire compartments not being damaged after renovation, fire separation, fire doors and fire shutters being installed in compliance with regulations, public passages having natural or mechanical smoke exhaust conditions, no enclosed ceilings or flammable accumulations, fire truck access roads, rescue sites and access surfaces not being occupied or blocked, underground station halls and underground connecting passages meeting the special fire safety specifications for subways / underground spaces, etc. Traffic organization conditions, such as new connecting corridors, underpasses, overpasses, and vertical nodes, do not conflict with the flow of motor vehicles. Pedestrian entrances and exits, gathering plazas, and urban roads, intersections, and bus stops are reasonably connected. Pedestrian flow is organized in a straight line without turning back or cross congestion, meeting the peak hour traffic capacity. After the interface breaks are broken, a continuous closed-loop network is formed, improving overall accessibility and penetration.

[0077] It is organized in a unified manner with rail transit, slow traffic systems, and street network, with no dead ends or invalid nodes.

[0078] Then, the selected tissue repair actions are sorted in a non-dominated order.

[0079] Based on each tissue repair action a , and Definition: If tissue repair action a1 is not inferior to tissue repair action a2 in any of these three metrics, i.e. , and And at least one indicator is significantly better than tissue repair action a2, i.e. and / or and / or If the tissue repair action a1 controls the tissue repair action a2, then the tissue repair action a1 is said to control the tissue repair action a2.

[0080] All tissue repair actions that are not dominated by other tissue repair actions are formed into the first priority layer. The remaining tissue repair actions follow the same construction process as the first priority layer. Continue to build the second priority layer, the third priority layer, and so on, until all tissue repair actions are assigned to a priority layer level. This results in a Pareto hierarchical priority order.

[0081] Then, the order of tissue repair actions within the same priority layer is determined.

[0082] For example: first, based on unit cost repair efficiency Sort from largest to smallest; If the unit cost repair efficiency If they are the same, then adjust according to the amount of improvement in stereotactic penetration. Sort from largest to smallest; If stereotactic penetration is improved If they are the same, then increment by interface. Sort from largest to smallest; If the interface increment If they are the same, prioritize the repair actions corresponding to the interface continuity breakpoints that can repair the critical lines.

[0083] Based on the above ranking, the ranking of the organization repair actions within each priority layer can be obtained, thus yielding the final dense road network organization repair strategy for the target block.

[0084] Compared to existing technologies, this invention enables the systematic and accurate identification of multiple real and effective public ground-level interfaces within high-density mixed-use blocks. Unlike traditional solutions that limit identification to a single ground-level surface, this invention can identify and organize multiple public ground-level interfaces across different types of high-density mixed-use blocks, effectively overcoming the limitations of traditional methods in terms of scenario adaptability. It possesses greater generalization capabilities, providing more scientific and universal technical support for the refined design and efficient organization of public spaces in high-density mixed-use blocks. Furthermore, by expanding the concept of "ground-level" from a single ground level to a system of multiple effective ground-level interfaces, it can identify various interface types, including upper-level road ground-levels, lower-level road ground-levels, platform ground-levels, connecting corridor ground-levels, station hall ground-levels, and underground passage ground-levels. This more realistically reflects the public entry logic in high-density and mountainous three-dimensional blocks. Compared to traditional solutions that focus solely on building layout, this invention focuses more on the public interface itself, improving the identification accuracy of public spaces in complex three-dimensional blocks.

[0085] This invention, through constructing a coupling reachability relationship between multiple public interfaces and a three-dimensional road / channel network, and combining indicators such as effective public interface density, three-dimensional public penetration rate, and interface continuity loss, transforms the goal of "small blocks, dense road networks" from "denser roads" to "more effective public interfaces, stronger interface continuity, and higher three-dimensional penetration." This allows for accurate identification of real problems where the two-dimensional road network, while appearing relatively dense, still exhibits discontinuous public interfaces. The research object becomes more three-dimensional, avoiding misjudgments based solely on planar road density. This results in output repair actions that better align with the spatial characteristics of three-dimensional blocks, exhibiting greater spatial coherence, systematicity, and integrity, effectively improving the rationality and feasibility of the repair plan.

[0086] This invention can accurately identify interface continuity breaks and three-dimensional permeability weaknesses within a street block. Based on these identified breaks and weaknesses, it generates organizational repair actions for a dense network of three-dimensional small blocks. By combining unit cost repair efficiency, three-dimensional permeability improvement, and interface increment for Pareto ranking, a multi-objective balanced repair scheme can be obtained. This multi-objective balanced repair scheme can directly serve the renewal, opening, and public interface governance of high-density mixed-use blocks and mountainous urban blocks, improving the scientific and practical nature of repair decisions.

[0087] See Figure 2 , Figure 2 This invention provides a structural block diagram of a three-dimensional organization and planning system for dense urban road networks, comprising: The first-level interface recognition module 11 is used to identify effective first-level public interfaces at different elevation levels based on the three-dimensional road network model of the target block; wherein, the three-dimensional road network model is constructed based on public interface data at different elevation levels within the target block, and the effective first-level public interfaces are used to indicate interface layers that are accessible, interconnected, and associated with public activities. The first-layer interface measurement module 12 is used to measure the effective public interface density and three-dimensional public penetration rate of the target block based on the effective first-layer public interface. The connectivity defect identification module 13 is used to map the effective first-level public interface in each elevation level to the three-dimensional road traffic network of the target block, construct an interface road network coupling topology map, and identify interface continuity breakpoints and three-dimensional permeability weak points in the effective first-level public interface based on the interface road network coupling topology map. The organization repair simulation module 14 is used to simulate the organization repair of dense road networks based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity discontinuity points, and the three-dimensional penetration weakness points, so as to obtain the dense road network organization repair strategy of the target block.

[0088] In an optional embodiment, the system further includes: The interface data acquisition module is used to acquire public interface data at different elevation levels within the target block; wherein, the public interface data includes: interface nodes of road type, interface nodes of platform type, interface nodes of connecting corridor type, interface nodes of station hall type, interface nodes of underground passage type, and interface nodes of building entrance and exit type. The three-dimensional road network model construction module is used to construct a three-dimensional road network model of the target street based on the public interface data and the basic spatial data of the target street. The three-dimensional road network model is used to indicate the three-dimensional road network topology formed by the connection relationships and elevation layer distribution of different types of interface nodes within the target block.

[0089] In one optional embodiment, the first-layer interface recognition module 11 includes: The condition judgment unit is used to determine whether each interface node in the three-dimensional road network model meets the preset first-layer interface conditions; wherein, the first-layer interface conditions include: the interface node has public accessibility, is connected to the three-dimensional public passage network, and is associated with public activities; The interface recognition unit is used to identify interface nodes that meet the first-layer interface conditions as valid first-layer public interfaces. The effective first-floor public interfaces include: effective first-floor public interfaces of upper-level road type, effective first-floor public interfaces of lower-level road type, effective first-floor public interfaces of platform type, effective first-floor public interfaces of connecting corridor type, effective first-floor public interfaces of station hall type, and effective first-floor public interfaces of underground passage type.

[0090] In one optional embodiment, the first-layer interface measurement module 12 includes: The interface density calculation unit is used to calculate the density of the effective public interface based on the first accessible plane information of the effective first-layer public interface and the second accessible plane information of the target block. The travel distance calculation unit is used to determine the first shortest travel distance from any location point in the target block to each of the effective first-level public interfaces based on the feasible paths in the interface road network coupling topology map. The public penetration rate calculation unit is used to calculate the three-dimensional public penetration rate based on the location points where the first shortest passage distance is less than a preset passage reach threshold and the second reachable plane information.

[0091] In one optional embodiment, the connectivity defect identification module 13 includes: The passage identification unit is used to map each effective first-level public interface to the three-dimensional road traffic network, and identify at least one feasible path and public passage mode connecting the effective first-level public interface and the three-dimensional road traffic network. The passage cost calculation unit is used to calculate the passage cost of each feasible path under the public passage mode; The coupling reachability construction unit is used to compare and analyze the passage cost of each feasible path with a preset cost threshold, and construct the coupling reachability relationship between the effective first-level public interface and the three-dimensional road traffic network based on feasible paths whose passage cost is not higher than the cost threshold. The interface road network coupling graph construction unit is used to construct an interface road network coupling topology graph based on all the effective first-layer common interfaces as nodes and the coupling reachability relationships of each of the effective first-layer common interfaces.

[0092] In one optional embodiment, the connectivity defect identification module 13 includes: The interface continuous topology graph construction unit is used to construct an interface continuous topology graph based on the reachable path between any two effective first-layer common interfaces in the interface road network coupling topology graph; wherein, the reachable path includes at least one feasible path. The interface continuity breakpoint determination unit is used to determine the interface continuity breakpoint in the effective first-layer common interface based on the connectivity change after blocking any one of the effective first-layer common interfaces in the interface continuity topology graph. The three-dimensional permeability weak point determination unit is used to determine the three-dimensional permeability weak point in the effective first-layer common interface based on the change in three-dimensional common permeability after blocking any one of the effective first-layer common interfaces in the interface road network coupling topology diagram.

[0093] In one optional embodiment, the interface continuity breakpoint determination unit includes: The first connected component quantity calculation subunit is used to calculate the first connected component quantity based on the reachable path between two effective first-layer common interfaces in the interface continuous topology graph. The interface continuous topology graph update subunit is used to update the interface continuous topology graph by blocking any one of the effective first-layer common interfaces in the interface continuous topology graph. The second connected component quantity calculation subunit is used to calculate the number of second connected components after blocking the corresponding effective first-layer common interface based on the reachable path between the two effective first-layer common interfaces in the updated interface continuous topology graph. The interface continuity loss calculation subunit is used to calculate the interface continuity loss of the blocked effective first-layer common interface based on the number of the first connected components and the number of the second connected components. The breakpoint identification subunit is used to determine the effective first-layer common interface to be blocked as an interface continuity breakpoint when the interface continuity loss is greater than a preset first loss threshold.

[0094] In one optional embodiment, the three-dimensional penetration weakness point determination unit includes: The shortest travel distance calculation subunit is used to determine the second shortest travel distance from any location point in the target block to the remaining effective first-layer public interfaces by blocking any one of the effective first-layer public interfaces in the interface road network coupling topology map. The penetration rate calculation subunit is used to calculate the restricted three-dimensional public penetration rate after blocking the corresponding effective first-floor public interface based on the location point where the second shortest passage distance is less than the preset passage reach threshold and the second reachable plane information of the target block. The infiltration loss calculation subunit is used to calculate the infiltration loss of the effective first-layer common interface blocked based on the restricted three-dimensional common permeability and the three-dimensional common permeability. The permeability weakness identification subunit is used to determine the effective first-layer common interface of the blockage as a three-dimensional permeability weakness when the permeation loss is greater than a preset second loss threshold.

[0095] In one alternative embodiment, the tissue repair simulation module 14 includes: The interruption type determination unit is used to determine the type of interface structural interruption existing in the target block based on the effective public interface density, the three-dimensional public permeability, the interface continuity loss corresponding to the interface continuity breakpoint, and the permeation loss corresponding to the three-dimensional permeability weak point. The motion simulation unit is used to simulate corresponding tissue repair actions for different types of interface structural interruptions. The interface density increment calculation unit is used to calculate the first increment of the effective common interface density after each tissue repair action is performed. The penetration rate increment calculation unit is used to calculate the second increment of the three-dimensional common penetration rate after each tissue repair action is performed. The repair efficiency calculation unit is used to calculate the unit cost repair efficiency after each tissue repair action is performed, based on the second increment and the action cost of the corresponding tissue repair action. The action sorting unit is used to prioritize all organizational repair actions based on the second increment, the second increment, and the unit cost repair efficiency of each organizational repair action, so as to obtain the dense road network organizational repair strategy of the target block.

[0096] It should be noted that the working process of each module in the urban street dense road network three-dimensional organization planning system described in the embodiments of the present invention can refer to the working process of the urban street dense road network three-dimensional organization planning method described in the above embodiments, and the technical effect achieved is the same as that of the urban street dense road network three-dimensional organization planning method described in the above embodiments, and will not be repeated here.

[0097] See Figure 3 , Figure 3This is a structural block diagram of an urban street dense road network three-dimensional organization planning device provided in an embodiment of the present invention. The urban street dense road network three-dimensional organization planning device includes a processor 21, a memory 22, and a computer program stored in the memory 22 and executable on the processor 21. When the processor 21 executes the computer program, it implements the steps in the above embodiments of the urban street dense road network three-dimensional organization planning method, such as steps S11 to S14.

[0098] For example, the computer program can be divided into one or more modules or units, which are stored in the memory 22 and executed by the processor 21 to complete the present invention. The one or more modules or units can be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program in the urban street network three-dimensional organization planning device.

[0099] The urban street network three-dimensional organization and planning equipment may include, but is not limited to, a processor 21 and a memory 22. Those skilled in the art will understand that the schematic diagram is merely an example of an urban street network three-dimensional organization and planning equipment and does not constitute a limitation on the equipment. It may include more or fewer components than shown in the diagram, or combine certain components, or use different components. For example, the urban street network three-dimensional organization and planning equipment may also include input / output devices, network access devices, buses, etc.

[0100] The processor 21 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor. The processor 21 is the control center of the urban street dense road network three-dimensional organization planning equipment, connecting various parts of the equipment via various interfaces and lines.

[0101] The memory 22 can be used to store the computer programs and / or modules. The processor 21 realizes various functions of the urban street network three-dimensional organization planning equipment by running or executing the computer programs and / or modules stored in the memory 22 and calling the data stored in the memory 22. The memory 22 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, phonebook, etc.). In addition, the memory 22 may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0102] The modules or units integrated into the urban street network three-dimensional organization planning equipment, if implemented as software functional units and sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by the processor 21, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.

[0103] It should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the device embodiments provided by this invention, the connection relationships between modules indicate that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0104] The above description represents the preferred embodiments of the present invention. It should be noted that, for those skilled in the art, various improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for three-dimensional organization and planning of dense road networks in urban blocks, characterized in that, include: Based on the three-dimensional road network model of the target block, the effective first-level public interfaces in different elevation layers are identified; wherein, the three-dimensional road network model is constructed based on the public interface data of different elevation layers in the target block, and the effective first-level public interfaces are used to indicate the interface layers that are accessible, interconnected and associated with public activities. Based on the effective first-floor public interface, the effective public interface density and three-dimensional public penetration rate of the target block are measured. Map the effective first-level public interfaces at each elevation level to the three-dimensional road traffic network of the target block to construct an interface road network coupling topology map, and identify interface continuity discontinuities and three-dimensional permeability weaknesses in the effective first-level public interfaces based on the interface road network coupling topology map. Based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity discontinuity points, and the three-dimensional penetration weakness points, a dense road network organization and repair simulation is performed to obtain the dense road network organization and repair strategy for the target block.

2. The urban street block dense road network three-dimensional organization planning method as described in claim 1, characterized in that, The method further includes: Obtain public interface data at different elevation levels within the target block; wherein, the public interface data includes: interface nodes of road type, interface nodes of platform type, interface nodes of connecting corridor type, interface nodes of station hall type, interface nodes of underground passage type, and interface nodes of building entrance / exit type. Based on the public interface data and the basic spatial data of the target block, a three-dimensional road network model of the target block is constructed. The three-dimensional road network model is used to indicate the three-dimensional road network topology formed by the connection relationships and elevation layer distribution of different types of interface nodes within the target block.

3. The urban street block dense road network three-dimensional organization planning method as described in claim 2, characterized in that, Based on the three-dimensional road network model of the target block, identify the effective ground-level public interfaces at different elevation levels, including: Determine whether each interface node in the three-dimensional road network model meets the preset first-layer interface conditions; wherein, the first-layer interface conditions include: the interface node has public accessibility, is connected to the three-dimensional public passage network, and is associated with public activities; Interface nodes that meet the conditions of the first-level interface are identified as valid first-level public interfaces. The effective first-floor public interfaces include: effective first-floor public interfaces of upper-level road type, effective first-floor public interfaces of lower-level road type, effective first-floor public interfaces of platform type, effective first-floor public interfaces of connecting corridor type, effective first-floor public interfaces of station hall type, and effective first-floor public interfaces of underground passage type.

4. The urban street block dense road network three-dimensional organization planning method as described in claim 1, characterized in that, Based on the effective first-floor public interface, the effective public interface density and three-dimensional public penetration rate of the target block are measured, including: The density of the effective public interface is calculated based on the first accessible plane information of the effective first-level public interface and the second accessible plane information of the target block; Based on the feasible paths in the interface road network coupling topology map, determine the first shortest travel distance from any location point in the target block to each of the effective first-level public interfaces; The three-dimensional public penetration rate is calculated based on the location points where the first shortest travel distance is less than a preset travel reach threshold and the second reachable plane information.

5. The urban street block dense road network three-dimensional organization planning method as described in claim 4, characterized in that, Mapping the effective first-level public interfaces at each elevation level to the three-dimensional road traffic network of the target block, constructing an interface road network coupled topology map, including: For each of the effective first-level public interfaces, the effective first-level public interface is mapped to the three-dimensional road traffic network, and at least one feasible path and public mode of transportation connecting the effective first-level public interface and the three-dimensional road traffic network are identified. Under the aforementioned public travel mode, calculate the travel cost for each feasible path; The passage cost of each feasible path is compared and analyzed with a preset cost threshold, and the coupling reachability relationship between the effective first-level public interface and the three-dimensional road traffic network is constructed based on feasible paths whose passage cost is not higher than the cost threshold. Based on all the effective first-level common interfaces as nodes and the coupling reachability relationships of each effective first-level common interface, construct an interface road network coupling topology diagram.

6. The urban street block dense road network three-dimensional organization planning method as described in claim 5, characterized in that, Based on the interface road network coupling topology diagram, identify interface continuity breakpoints and three-dimensional penetration weaknesses in the effective first-layer common interface, including: Based on the reachable paths between any two effective first-layer common interfaces in the interface road network coupling topology graph, a continuous interface topology graph is constructed; wherein, the reachable path includes at least one feasible path; Based on the connectivity changes after blocking any one of the effective first-layer common interfaces in the continuous topology graph of the interface, determine the interface continuity breakpoints in the effective first-layer common interfaces. Based on the change in three-dimensional public permeability after blocking any one of the effective first-layer public interfaces in the interface road network coupling topology, the three-dimensional permeability weak points in the effective first-layer public interfaces are determined.

7. The urban street block dense road network three-dimensional organization planning method as described in claim 6, characterized in that, Based on the connectivity changes after blocking any one of the effective first-layer common interfaces in the continuous topology graph, determine the interface continuity breakpoints in the effective first-layer common interfaces, including: Calculate the number of first connected components based on the reachable paths between two effective first-layer common interfaces in the continuous topology graph of the interface. The interface continuous topology graph is updated by blocking any one of the valid first-layer common interfaces in the interface continuous topology graph; Based on the reachable path between two effective first-layer common interfaces in the updated interface continuous topology graph, calculate the number of second connected components after blocking the corresponding effective first-layer common interface. Based on the number of the first connected components and the number of the second connected components, calculate the interface continuity loss of the effective first-layer common interface that is blocked. When the interface continuity loss is greater than a preset first loss threshold, the effective first-layer common interface to be blocked is determined as the interface continuity breakpoint.

8. The urban street block dense road network three-dimensional organization planning method as described in claim 6, characterized in that, Based on the change in three-dimensional public permeability after blocking any one of the effective first-layer public interfaces in the interface road network coupling topology, the three-dimensional permeability weak points in the effective first-layer public interfaces are determined, including: By blocking any one of the effective first-level public interfaces in the interface road network coupling topology map, the second shortest travel distance from any location point in the target block to the remaining effective first-level public interfaces is determined. Based on the location points where the second shortest passage distance is less than the preset passage reach threshold and the second reachable plane information of the target block, the restricted three-dimensional public penetration rate after blocking the corresponding effective first-floor public interface is calculated; Based on the restricted three-dimensional public permeability and the three-dimensional public permeability, calculate the permeation loss of the effective first-layer public interface to be blocked; When the penetration loss is greater than the preset second loss threshold, the effective first-layer common interface of the blockage is determined as a weak point in three-dimensional penetration.

9. The method for three-dimensional organization and planning of dense urban street networks as described in claim 6, characterized in that, Based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity discontinuities, and the three-dimensional penetration weaknesses, a dense road network organization and repair simulation is performed to obtain a dense road network organization and repair strategy for the target block, including: Based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity loss corresponding to the interface continuity breakpoint, and the penetration loss corresponding to the three-dimensional penetration weakness point, the type of interface structural interruption existing in the target block is determined. Simulate corresponding tissue repair actions for different types of interface structural interruptions; Calculate the first increment of the effective common interface density after each tissue repair action is performed; Calculate the second increment of the three-dimensional public penetration rate after each tissue repair action is performed; Based on the second increment and the action cost of the corresponding tissue repair action, calculate the unit cost repair efficiency after each tissue repair action is executed. Based on the second increment, second increment, and unit cost repair efficiency of each organizational repair action, all organizational repair actions are prioritized to obtain the dense road network organizational repair strategy for the target block.

10. A three-dimensional organization and planning system for dense urban street networks, characterized in that, include: The first-level interface recognition module is used to identify effective first-level public interfaces at different elevation levels based on the three-dimensional road network model of the target block; wherein, the three-dimensional road network model is constructed based on public interface data at different elevation levels within the target block, and the effective first-level public interfaces are used to indicate interface layers that are accessible, interconnected, and associated with public activities. The first-layer interface measurement module is used to measure the effective public interface density and three-dimensional public penetration rate of the target block based on the effective first-layer public interface. The connectivity defect identification module is used to map the effective first-level public interfaces in each elevation level to the three-dimensional road traffic network of the target block, construct an interface road network coupling topology map, and identify interface continuity breakpoints and three-dimensional permeability weak points in the effective first-level public interfaces based on the interface road network coupling topology map. The organization repair simulation module is used to simulate the organization repair of dense road networks based on the effective public interface density, the three-dimensional public penetration rate, the interface continuity discontinuity points, and the three-dimensional penetration weakness points, so as to obtain the dense road network organization repair strategy of the target block.

11. A three-dimensional organization and planning device for dense urban street networks, characterized in that, include: The processor, the memory, and the computer program stored in the memory and configured to be executed by the processor, wherein the processor, when executing the computer program, implements the urban block dense road network three-dimensional organization planning method as described in any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to perform the urban block dense road network three-dimensional organization planning method as described in any one of claims 1 to 9.

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