CN115309799A - Comprehensive city updating unit updating mode selection method based on GIS - Google Patents
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Abstract
A comprehensive city based on GIS updates the unit and updates the mode selection method, confirm the city and update the unit → confirm the city density subregion → count the scale of the living building of the present situation → count and plan the scale of the living building → compare the scale of the living building of the present situation and plan the scale of the living building → confirm and update the mode selection; through basic functions in GIS software, living land in city updating is focused, a judgment model is built by combining basic data such as existing house surveying and mapping information, central city area controllability detailed planning, city density zoning and the like, urban population capacity is simulated through comparison of the living land and the scale of buildings on the living land, and preliminary selection of an updating direction of a city updating unit is determined; by combining the type division of the urban updating units, the development mode of the urban updating units can be determined firstly from a macroscopic level, and a foundation is laid for the next step of comprehensively updating the urban areas to comprehensively allocate inventory resources, optimize functional layout and realize sustainable development of the areas.
Description
Technical Field
The invention relates to the field of city updating special planning in territorial space planning, in particular to a comprehensive city updating unit updating mode selection method based on a GIS.
Background
In 10 months in 2020, nineteen and five middle schools in total clearly propose and implement city updating actions through fourteen and five plans and 2035 landscape objectives, the urbanization rate of the current daily living population in China reaches more than 60%, the increase value of the third industry accounts for nearly 54% of the total production value in China, and the method marks that the city development in China is mainly expanded from the previous increment and shifts to a new stage in which stock updating is mainly carried out. The urbanization with human core and the future high-quality development of cities both put higher requirements on city updating of inventory planning.
The urban updating is a necessary way for the urban development to high quality, the urban is served by people, the most closely related to people is housing, in a certain sense, the urban updating planning is to optimize the relation of people, land and house, and the sustainable coordinated development of people, land and house in the urban is realized through gradual organic updating.
At present, a method for selecting an update mode of an urban update unit mainly evaluates the urban update potential from a macroscopic qualitative perspective around the aspects of urban spatial structure update potential, ecological sustainable development potential, social sustainable development potential, public policy guarantee potential and the like, has the problems of being biased to qualitative analysis and lacking in quantitative analysis of the update potential of the urban update unit, and in the face of huge-scale urban update actions, how to combine with the division of urban update unit types, firstly determines the development mode of the urban update unit from a macroscopic level, and comprehensively plans inventory resource allocation for the next regional comprehensive urban update, optimizes functional layout, and realizes that the sustainable development of a plot becomes a long-term difficult-to-solve technical problem.
In view of the above, a comprehensive city updating unit updating mode selection method based on the GIS is now developed.
Disclosure of Invention
The invention provides a comprehensive city updating unit updating mode selection method based on GIS (geographic information system), which aims to overcome the defects of the prior art, focuses on residential land in city updating through the basic function in GIS software, combines basic data such as the prior house mapping information, central city area controllability detailed planning, city density partition and the like, constructs a judgment model, simulates the urban population capacity through the comparison of the residential land and the scale of buildings thereon, and determines the initial selection of the updating direction of the city updating unit; by combining the type division of the urban updating units, the development mode of the urban updating units can be determined firstly from the macro level, and the method can be used for planning stock resource allocation and optimizing functional layout for the next regional comprehensive urban updating, so that the sustainable development of the district is realized.
In order to achieve the purpose, the invention adopts the following technical scheme that a comprehensive city updating unit updating mode selection method based on GIS is used for determining a city updating unit → determining a city density subarea → counting the scale of the current residential building → counting and planning the scale of the residential building → comparing the scale of the current residential building with the scale of the planning residential building → determining the updating mode selection;
step 1: determining the boundary of an urban updating unit by combining an administrative boundary, a river railway, a main traffic main road and land scale;
step 2: determining the total building scale and the distribution of the scale in the future of the city, namely density subareas, by combining the planned population capacity, the land scale and the suitable occupied building scale;
and 3, step 3: calculating the scale of the current residential building according to the current house surveying and mapping information data to obtain the total scale of the current residential building;
step 4; calculating the scale of the planned residential building according to the building capacity determined by the density partition to obtain the total scale of the planned residential building;
and 5: comparing the current living total building scale with the planned living total building scale,
step 6: and determining updating mode selection of the updating unit according to the difference value between the current total residential building scale and the planned total residential building scale.
The operation steps for calculating the scale of the current residential building are as follows:
s1: in GIS software, intersecting the city updating unit range with a central city current situation topographic map SHP database RESA layer to obtain a current situation building distribution SHP layer in a city updating unit, and exporting the current situation building distribution SHP layer as a layer 1;
s2: extracting a three-tone data layer of the country and the earth in the city updating unit, respectively selecting a 'town residential land' and a 'rural house base' from the DLMC field to obtain an SHP (short-cut distance map) layer of the current building distribution of the town residential buildings and the current building distribution of the rural houses, and exporting the SHP layer as a layer 2;
s3: intersecting the layer 1 with the layer 2 to obtain a SHP layer of the current residential building distribution in the city updating unit, and exporting the SHP layer as a layer 3;
s4: local correction is carried out on mapping information data of the current buildings through two fields of RESA layer FRAME (structure) and FLO (number of layers), assignment is carried out on the FLO (number of layers) field of each current building, a layer with the number of layers corrected is obtained, and the layer is derived to be a layer 3-1;
s5: respectively calculating the scale of the building of the current situation of the rural house and the scale of the building of the current situation of the town house, building the scale of a field building, multiplying the field of 'layer number correction' by the field of 'shape area' through a field calculator to obtain the scale of the building of the current situation of the rural house and the scale of the building of the current situation of the town house;
s6: adding the current building scale of the rural homestead and the current building scale of the town residence to obtain the current total building scale of the residence, and deriving the current total building scale as a compiling unit map layer.
The operation steps for calculating and planning the scale of the residential building comprise:
(1) loading a central urban area city control rule mosaic in the GIS, extracting central urban area residential land pattern spots, and deriving a pattern layer 4;
(2) loading a rail transit station entrance and exit in a central urban city control rule mosaic;
(3) dividing rail transit stations into a central station and a general station according to grades;
(4) generating buffer areas in the peripheral range of a central station and a common station at the periphery of a rail transit station;
(5) respectively intersecting buffer areas in the range of a central station and a general station around a rail transit station with the layer 4 to obtain residential sites in the range of the central station and the general station;
(6) assigning a reference volume rate of the planned residential site by combining density subareas, and intersecting the graph layer 4 with the density grades to obtain residential sites in different density subareas;
(7) correcting the volume rate;
(8) checking the upper limit of the volume rate;
(9) using a field calculator tool, set "building size = [ Shape _ Area ] × [ modified volume rate ]", resulting in the planned total building size of residences.
The operation steps of comparing the scale of the existing residential building with the scale of the planned residential building are as follows:
the first step is as follows: connecting the planned total residential building scale with an attribute table of the current total residential building scale;
the second step: newly building a field difference value, and obtaining the difference value between the planned residential building scale and the current residential building scale by using a field calculator difference value = [ planned scale ] - [ total scale ];
the third step: and opening the attribute of the graphic layer of the compiling unit, selecting a symbolic system, grading colors and manually classifying to divide the difference value into four types of colors for display, and obtaining a visual graph preliminarily selected by the city updating unit in the development boundary.
The specific method for assigning the reference volume rate of the planned residential site by combining the density subareas comprises the following steps:
and selecting the pattern spots of each density partition according to the density partitions and the attributes, and assigning the density partitions by using a field calculator tool to obtain the reference volume rate of the residential area assignment in the city updating unit.
The specific method for correcting the volume fraction is as follows:
according to the correction requirements of density partitions on residential land around the rail transit station;
multiplying the standard volume rate of the residential site in each range around the central station by the corresponding correction coefficient;
the residential site reference volume fraction in each range around the general station is multiplied by the corresponding correction coefficient.
The specific method for checking the upper limit of the volume rate is as follows:
and selecting the pattern spots of each density partition according to the attribute, and setting the corrected volume fraction = the extreme value volume fraction by using a field calculator tool to obtain the corrected volume fraction of the density partition with the checked extreme value.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a flowchart illustrating the operation of the GIS-based comprehensive city update unit update mode selection method of the present invention;
fig. 2 is a schematic diagram of an SHP layer of current building distribution in a city update unit in embodiment 2 of the present invention;
FIG. 3 is a SHP map layer diagram of the present building distribution of town residences and the present building distribution of rural residences in embodiment 2 of the present invention;
fig. 4 is a SHP map layer diagram of the current residential building distribution in a city update unit in embodiment 2 of the present invention;
FIG. 5 is a schematic diagram of a central urban area city control rule map for extracting a central urban area residential land pattern spot in embodiment 3 of the present invention;
fig. 6 is a schematic view of a central urban area city control plan mosaic of an entrance and exit of a loaded rail transit station in embodiment 3 of the present invention;
fig. 7 is a schematic diagram of a buffer area around a central station and a general station generated around a rail transit station in embodiment 3 of the present invention;
FIG. 8 is a schematic view showing residential sites within the peripheral area of a central station and a general station in the embodiment 3 of the present invention;
fig. 9 is a schematic diagram of the planned residential site reference volume fraction assigned according to the density partition in embodiment 3 of the present invention;
fig. 10 is a schematic diagram of residential land in different density sections obtained by intersecting the layer 4 with density grading in embodiment 3 of the present invention;
fig. 11 is a schematic diagram of a visualization graph of preliminary selection of a city update unit within the development boundary in embodiment 4 of the present invention.
Detailed Description
The present invention is further illustrated in detail below with reference to examples and embodiments:
example 1
Determining a city updating unit → determining a city density subarea → counting the scale of the current residential building → counting the scale of the planned residential building → comparing the scale of the current residential building with the scale of the planned residential building → determining the selection of an updating mode;
step 1: determining the boundary of an urban updating unit by combining an administrative boundary, a river railway, a main traffic main road and land scale;
step 2: determining the distribution of the future total building scale and scale of the city, namely density subareas, by combining the planned population capacity, the land scale and the suitable per capita residential building scale;
and step 3: calculating the scale of the current residential building according to the current housing surveying and mapping information data to obtain the total scale of the current residential building;
step 4; calculating the scale of the planned residential building according to the building capacity determined by the density partition to obtain the total scale of the planned residential building;
and 5: comparing the current living total building scale with the planned living total building scale,
and 6: and determining the updating mode selection of the updating unit according to the difference between the current residential total building scale and the planned residential total building scale.
Example 2
The operation steps for calculating the scale of the current residential building are as follows:
s1: in GIS software, intersecting the city updating unit range with a central city current situation topographic map SHP database RESA layer to obtain a current situation building distribution SHP layer in a city updating unit, and exporting the current situation building distribution SHP layer as a layer 1;
s2: extracting a three-tone data layer of the country and the earth in the city updating unit, respectively selecting a 'town residential land' and a 'rural house base' from the DLMC field to obtain an SHP (short-cut distance map) layer of the current building distribution of the town residential buildings and the current building distribution of the rural houses, and exporting the SHP layer as a layer 2;
s3: intersecting the layer 1 with the layer 2 to obtain an SHP layer of the current residential building distribution in the city updating unit, and exporting the SHP layer as a layer 3;
s4: local correction is carried out on mapping information data of the current buildings through two fields of RESA layer FRAME (structure) and FLO (number of layers), assignment is carried out on the FLO (number of layers) field of each current building, a layer with the number of layers corrected is obtained, and the layer is derived to be a layer 3-1;
s5: respectively calculating the scale of the building of the current situation of the rural house and the scale of the building of the current situation of the town house, building the scale of a field building, multiplying the field of 'layer number correction' by the field of 'shape area' through a field calculator to obtain the scale of the building of the current situation of the rural house and the scale of the building of the current situation of the town house;
s6: adding the current building scale of the rural homestead and the current building scale of the town residence to obtain the current total building scale of the residence, and deriving the current total building scale as a compiling unit map layer.
Example 3
The operation steps for calculating and planning the scale of the residential building comprise:
(1) loading a central urban area city control rule mosaic in the GIS, extracting central urban area residential land pattern spots, and deriving a pattern layer 4;
(2) loading a rail transit station entrance and exit in a central urban city control rule mosaic;
(3) dividing rail transit stations into a central station and a general station according to grades;
(4) generating buffer areas in the peripheral range of a central station and a common station at the periphery of a rail transit station;
(5) respectively intersecting buffer areas in the range of a central station and a general station around a rail transit station with the layer 4 to obtain residential sites in the range of the central station and the general station;
(6) assigning a reference volume rate of the planned residential site by combining density subareas, and intersecting the graph layer 4 with the density grades to obtain residential sites in different density subareas;
(7) correcting the volume rate;
(8) checking the upper limit of the volume rate;
(9) using a field calculator tool, set "building size = [ Shape _ Area ] × [ modified volume rate ]", resulting in a planned total residential building size.
Example 4
The operation steps of comparing the scale of the existing residential building and planning the scale of the residential building are as follows:
the first step is as follows: connecting the planned total residential building scale with an attribute table of the current total residential building scale;
the second step is that: newly building a field difference value, and obtaining the difference value between the planned residential building scale and the current residential building scale by using a field calculator difference value = [ planned scale ] - [ total scale ];
the third step: and opening the attribute of the graphic layer of the compiling unit, selecting a symbolic system, grading colors and manually classifying to divide the difference value into four types of colors for display, and obtaining a visual graph preliminarily selected by the city updating unit in the development boundary.
Example 5
The specific method for assigning the reference volume rate of the planned residential site by combining the density subareas comprises the following steps:
and selecting the pattern spots of each density partition according to the density partition and the attributes, and assigning values to each density partition by using a field calculator tool to obtain the reference volume rate of the residential area assignment in the city updating unit.
Example 6
The specific method for correcting the volume ratio comprises the following steps:
according to the correction requirements of density partitions on residential land around the rail transit station;
multiplying the standard volume rate of the residential site in each range around the central station by the corresponding correction coefficient;
the occupancy site reference volume ratio in each range around the general station is multiplied by the corresponding correction coefficient.
Example 7
The specific method for checking the upper limit of the volume rate is as follows:
and selecting the pattern spots of each density subarea according to the attribute, and setting the corrected volume rate = the extreme value volume rate by using a field calculator tool to obtain the corrected volume rate of the density subarea with the checked extreme value.
Claims (7)
1. A GIS-based comprehensive city updating unit updating mode selection method is characterized in that: determining a city updating unit → determining a city density subarea → counting the scale of the current residential building → counting the scale of the planned residential building → comparing the scale of the current residential building with the scale of the planned residential building → determining the selection of an updating mode;
step 1: determining the boundary of an urban updating unit by combining an administrative boundary, a river railway, a main traffic main road and land scale;
step 2: determining the distribution of the future total building scale and scale of the city, namely density subareas, by combining the planned population capacity, the land scale and the suitable per capita residential building scale;
and step 3: calculating the scale of the current residential building according to the current housing surveying and mapping information data to obtain the total scale of the current residential building;
step 4; calculating the scale of the planned residential building according to the building capacity determined by the density partition to obtain the total scale of the planned residential building;
and 5: comparing the current living total building scale with the planned living total building scale,
step 6: and determining updating mode selection of the updating unit according to the difference value between the current total residential building scale and the planned total residential building scale.
2. The GIS-based comprehensive city update unit update mode selection method according to claim 1, characterized in that: the operation steps for calculating the scale of the existing residential building are as follows:
s1: in GIS software, intersecting the city updating unit range with a central urban area current situation topographic map SHP database RESA layer to obtain a current situation building distribution SHP layer in a city updating unit, and exporting the current situation building distribution SHP layer as a layer 1;
s2: extracting a three-tone data layer of the country and the earth in the city updating unit, respectively selecting a 'town residential land' and a 'rural house base' from the DLMC field to obtain an SHP (short-cut distance map) layer of the current building distribution of the town residential buildings and the current building distribution of the rural houses, and exporting the SHP layer as a layer 2;
s3: intersecting the layer 1 with the layer 2 to obtain an SHP layer of the current residential building distribution in the city updating unit, and exporting the SHP layer as a layer 3;
s4: local correction is carried out on mapping information data of the current buildings through two fields of RESA layer FRAME (structure) and FLO (number of layers), assignment is carried out on the FLO (number of layers) field of each current building, a layer with the number of layers corrected is obtained, and the layer is derived to be a layer 3-1;
s5: respectively calculating the current building scale of a rural home base and the current building scale of a town house, building a new field building scale, and multiplying the 'layer number correction' field by the 'shape area' field through a field calculator to obtain the current building scale of the rural home base and the current building scale of the town house;
s6: adding the current building scale of the rural home base and the current building scale of the town residence to obtain the current total building scale of the residence, and deriving the current total building scale as a compiling unit map layer.
3. The GIS-based comprehensive city update unit update mode selection method according to claim 1, characterized in that: the operation steps for calculating and planning the scale of the residential building comprise:
(1) loading a central urban area city control rule mosaic in the GIS, extracting central urban area residential land pattern spots, and deriving a pattern layer 4;
(2) loading an entrance and an exit of a rail transit station in a central urban area city control rule composite graph;
(3) dividing rail transit stations into a central station and a general station according to grades;
(4) generating buffer areas in the peripheral range of a central station and a common station at the periphery of a rail transit station;
(5) respectively intersecting buffer areas in the range of a central station and a general station around the rail transit station with the layer 4 to obtain residential sites in the range of the central station and the general station;
(6) assigning a reference volume rate of the planned residential site by combining density subareas, and intersecting the graph layer 4 with the density grades to obtain residential sites in different density subareas;
(7) correcting the volume rate;
(8) checking the upper limit of the volume rate;
(9) using a field calculator tool, set "building size = [ Shape _ Area ] × [ modified volume rate ]", resulting in a planned total residential building size.
4. The GIS-based comprehensive city update unit update mode selection method according to claim 1, characterized in that: the operation steps of comparing the scale of the existing residential building and planning the scale of the residential building are as follows:
the first step is as follows: connecting the planned total residential building scale with an attribute table of the current total residential building scale;
the second step is that: newly building a field difference value, and obtaining the difference value between the planned residential building scale and the current residential building scale by using a field calculator difference value = [ planned scale ] - [ total scale ];
the third step: and opening the attribute of the drawing unit layer, selecting a symbol system, grading colors and manually classifying to divide the difference value into four types of colors for displaying, and obtaining a visual graph preliminarily selected by the city updating unit in the development boundary.
5. The GIS-based comprehensive city update unit update mode selection method according to claim 3, characterized in that: the specific method for assigning the reference volume rate of the planned residential site by combining the density subareas comprises the following steps:
and selecting the pattern spots of each density partition according to the density partitions and the attributes, and assigning the density partitions by using a field calculator tool to obtain the reference volume rate of the residential area assignment in the city updating unit.
6. The GIS-based comprehensive city update unit update mode selection method according to claim 3, characterized in that: the specific method for correcting the volume ratio comprises the following steps:
correcting requirements on residential land around the rail transit station according to density partitions;
multiplying the standard volume rate of the residential site in each range around the central station by the corresponding correction coefficient;
the residential site reference volume fraction in each range around the general station is multiplied by the corresponding correction coefficient.
7. The GIS-based comprehensive city update unit update mode selection method according to claim 3, characterized in that: the specific method for checking the upper limit of the volume rate is as follows:
and selecting the pattern spots of each density partition according to the attribute, and setting the corrected volume fraction = the extreme value volume fraction by using a field calculator tool to obtain the corrected volume fraction of the density partition with the checked extreme value.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116186854A (en) * | 2023-02-15 | 2023-05-30 | 深圳市城市规划设计研究院股份有限公司 | Method and device for calculating volume rate of land, electronic equipment and storage medium |
| CN118196239A (en) * | 2024-05-16 | 2024-06-14 | 南京信息工程大学 | Intelligent generation method and system for effect diagram of urban updating scheme |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116186854A (en) * | 2023-02-15 | 2023-05-30 | 深圳市城市规划设计研究院股份有限公司 | Method and device for calculating volume rate of land, electronic equipment and storage medium |
| CN116186854B (en) * | 2023-02-15 | 2023-09-26 | 深圳市城市规划设计研究院股份有限公司 | Method and device for calculating volume rate of land, electronic equipment and storage medium |
| CN118196239A (en) * | 2024-05-16 | 2024-06-14 | 南京信息工程大学 | Intelligent generation method and system for effect diagram of urban updating scheme |
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