Space capacity increase potential analysis method and system for urban historical feature conservation area

Abstract

The present invention relates to the field of feature conservation area renewal, and provides a space capacity increase potential analysis method and system for an urban historical feature conservation area. The space capacity increase potential analysis method for the urban historical feature conservation area comprises: inputting an urban area to be studied, and delimiting, within the range, a land parcel that requires a capacity increase study; determining influential solar elements and line of sight elements around the land parcel that requires the capacity increase study, and generating a three-dimensional model by taking a land parcel as a unit; generating a solar envelope of the urban area on the basis of the solar elements, and generating a line of sight envelope of the urban area on the basis of the line of sight elements; performing intersection processing on the solar envelope and the line of sight envelope to generate a height control planar gradient map; and on the basis of the height control planar gradient map, predicting potential texture morphology, and performing quantitative presentation to obtain a data index of an adjusted land parcel. In this way, the problem in the prior art that a precise analysis method is required to perform an effective quantitative analysis on solar and line of sight elements in a designed land parcel is solved.

Description

Method and system for analyzing spatial expansion potential of urban historical conservation areas Technical Field

[0001] The present invention relates to the technical field of style and landscape protection zone renewal, and in particular to a method and system for analyzing the spatial capacity expansion potential of urban historical style and landscape protection zones. Background Art

[0002] When renovating high-density urban areas, designers often base their designs on planned height controls. However, height controls in these plans are often applied across the board, per plot. This can result in significant differences in the buildable heights of two adjacent plots, reaching tens or even hundreds of meters. This is detrimental to the development of a positive urban landscape and may compromise the potential for increased capacity on some plots. Furthermore, the visual perception of streetscapes and block interiors differs, necessitating different control principles. Within blocks, there is still room for increased capacity. Furthermore, high-density built environments are complex, and during urban renewal, arbitrary increases in height by designers could impact the sunlight conditions of surrounding residential areas. Therefore, precise analytical methods are needed to effectively quantify sunlight and sightline factors within design plots.

[0003] Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the present invention provides a method and system for analyzing the spatial capacity expansion potential of urban historical and cultural protection areas, which solves the problem that the existing technology requires a precise analysis method to effectively quantify the sunlight and sight factors in the design plot.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] First, a method for analyzing the spatial expansion potential of urban historical conservation areas is provided, including:

[0009] Enter the urban area to be studied and delineate the parcels within that area where the capacity expansion study is to be conducted;

[0010] Determine the influencing sunlight and sightline factors around the plot to be studied for capacity expansion, and generate a three-dimensional model based on the plot;

[0011] Generate a sunshine envelope of the urban area according to sunshine elements, and generate a sight envelope of the urban area according to sight elements;

[0012] The sunlight envelope and the sightline envelope are intersected to obtain the buildable area within the study range. The intersection envelope is then gradient-fitted to generate a highly controlled plane gradient map.

[0013] Based on the highly controlled plane gradient map, the potential texture morphology is predicted and quantitatively presented to obtain the data indicators of the adjusted plot.

[0014] Preferably, the sunlight factors include the sunlight requirements of surrounding residential buildings affected by the construction on the site.

[0015] Preferably, the sunlight factor satisfies that surrounding residential buildings have at least 2 hours of full window sunlight on the winter solstice. The sunlight influencing factor face group is set to obstacles, and the boundary of the studied plot is input into geometry to generate a sunlight envelope.

[0016] Preferably, the sunlight envelope is generated by compiling a program based on the Grasshopper visual programming platform and using the Ladybug analysis plug-in. The specific steps are as follows:

[0017] Obtain the standard annual meteorological data for the city where the site to be studied is located. Use the climate import module in the Ldaybug plug-in system in Grasshopper to import the meteorological data into the model. Use the climate analysis tool in the Ladybug plug-in to import the geographic location information in the meteorological data into the sun path module.

[0018] Use the Sun Track module to generate and analyze the sun's trajectory throughout the year for the site, set the sunshine time period required to ensure the surrounding sunshine influencing factors, generate the sun's trajectory on the study site during the sunshine time, and import the generated sunshine vector information into Ladybug's Sun Cover module;

[0019] In the Sunlight Cover module, import the sunshine vector generated in the previous step, the boundary of the plot to be studied, the surrounding sunshine impact element surface, set the analysis grid scale, define the sunshine cover mode as the sunshine right mode and set it to run. Generate the maximum building height surface within the site to be studied that can guarantee the sunshine duration of the surrounding sunshine impact element surface;

[0020] Import the maximum building height surface lattice information obtained from the sunshine cover analysis into the patch module in Grasshopper to generate a surface. The surface is extruded in the -z axis direction to ensure that the generated block can contain the ground space of the entire analysis site. Then, a length is extruded in the z axis direction from the boundary of the analysis range to ensure that the generated block exceeds the maximum building height surface. The two volumes are interlaced to generate the sunshine envelope.

[0021] Preferably, the sight elements include factors or historical resource points outside the site that require sight.

[0022] Preferably, the steps of producing the visual envelope include:

[0023] Identify and analyze the sight control elements around the site and design and determine the sight control method, where the sight control elements include streets, protected buildings and public green spaces;

[0024] According to the determined sight control elements and control methods, a three-dimensional model of the sight control area is generated, and a sight envelope is generated according to the three-dimensional model of the sight control area.

[0025] Preferably, the data indicators include building area, building density and volume ratio.

[0026] Secondly, a spatial expansion potential analysis system for urban historical conservation areas is provided, which includes the following modules:

[0027] An input module for inputting the urban area to be studied and demarcating the plots to be studied for capacity expansion within the said area;

[0028] The determination module is used to determine the influencing sunlight factors and sightline factors around the plot of land for capacity expansion research, and generate a three-dimensional model based on the plot;

[0029] A generating module, configured to generate a sunshine envelope of the urban area according to sunshine elements, and generate a sight envelope of the urban area according to sight elements;

[0030] The processing module is used to perform intersection processing on the sunlight envelope and the sightline envelope to obtain the buildable area within the research scope, and then perform gradient fitting processing on the envelope after the intersection processing to generate a highly controlled plane gradient map;

[0031] The output module is used to predict the potential texture morphology based on the highly controlled plane gradient map, present it quantitatively, and obtain the data indicators of the adjusted plot.

[0032] In a third aspect, a computer-readable storage medium is provided that stores one or more programs, wherein the one or more programs include instructions that, when executed by a computing device, cause the computing device to perform any of the methods described.

[0033] According to a fourth aspect, a computing device is provided, comprising:

[0034] One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for executing any of the methods described.

[0035] (3) Beneficial effects

[0036] The present invention is directed to a method and system for analyzing the spatial capacity expansion potential of urban historical and cultural protection zones. Aiming at the problem mentioned in the background that it is difficult to quantitatively analyze the impact of sunlight and sight factors on the design site during the urban renewal design process with style and cultural control requirements, thereby lacking an effective basis for spatial capacity expansion, the present invention proposes a digital analysis method for expandable space based on the judgment of sunlight and sight impact during the renewal of style and cultural protection zones. The method can perform digital quantitative analysis of sunlight and sight factors in the design stage, and generate a three-dimensional envelope of the buildable area, providing designers with a more refined basis for height control judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG1 is a flow chart of a method for analyzing the spatial expansion potential of an urban historical conservation area according to the present invention;

[0038] FIG2 is a diagram of the analysis and research site and surrounding influencing factors according to an embodiment of the present invention;

[0039] FIG3 is a diagram of a sunshine cover program according to an embodiment of the present invention;

[0040] FIG4 is a diagram showing a Rizhao cover image generated in an embodiment of the present invention;

[0041] FIG5 is a diagram of the sight line control envelope according to an embodiment of the present invention;

[0042] FIG6 is a schematic diagram of sight line control conditions according to an embodiment of the present invention;

[0043] FIG7 is a diagram of a constructible envelope of sight line control according to an embodiment of the present invention;

[0044] FIG8 is a diagram showing gradient processing of a constructible envelope for sunlight-sight control according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] Example

[0047] As shown in FIG1 , an embodiment of the present invention provides a method for analyzing the spatial expansion potential of an urban historical conservation area, including:

[0048] Enter the urban area to be studied and identify the plots within the area where the capacity expansion study is to be conducted;

[0049] Determine the influencing sunlight and sightline factors around the plot to be studied for capacity expansion, and generate a three-dimensional model based on the plot;

[0050] Generate the sunshine envelope of the urban area based on the sunshine elements, and generate the sight envelope of the urban area based on the sight elements;

[0051] The sunlight envelope and the sightline envelope are intersected to obtain the buildable area within the study range. The intersection envelope is then gradient-fitted to generate a highly controlled plane gradient map.

[0052] Based on the highly controlled plane gradient map, the potential texture morphology is deduced and quantitatively presented to obtain the data indicators of the adjusted plot.

[0053] As shown in Figure 2, the site is a protected landscape area, rich in architectural forms and textures. We intend to analyze the expansion potential of the diagonally filled plots in the figure. Residential plots are scattered around the plots to be analyzed, and research is needed to ensure that, after expansion, the surrounding residential plots receive at least two hours of sunlight at noon on the winter solstice. Furthermore, the site contains several protected landscape roads (marked in black), and after expansion, it is necessary to ensure that pedestrians on both sides of the street, looking perpendicularly toward the street interface, can see the sky at least at the maximum elevation angle (45°).

[0054] Furthermore, the sunlight factor includes the sunlight requirements of surrounding residential buildings affected by the construction on the site.

[0055] Furthermore, the sunlight factor satisfies the requirement that surrounding residential buildings have at least 2 hours of full sunlight on the winter solstice. The surface group of the sunlight influencing factor is set to obstacles, and the boundary of the studied plot is input into geometry to generate the sunlight envelope.

[0056] Furthermore, the sunlight envelope is generated by compiling a program based on the Grasshopper visual programming platform and using the Ladybug analysis plug-in. The specific steps are as follows:

[0057] Download the standard annual weather data for the site's city from the Energplus official website's climate database. Use the Import EPW module in the Ladybug plugin system in Grasshopper to import the weather data into the model. Then, use the Ladybug plugin's climate analysis tool to import the geographic location information from the weather data into the Sunpath module.

[0058] Use the Solar Track module to generate a year-round solar trajectory for your analysis site. Set the required sunshine timeframe for the surrounding influencing factors (e.g., 11:00 AM to 1:00 PM on the winter solstice), generate the solar track for your study site within that timeframe, and import the generated sunshine vector information into Ladybug's Solar Envelope module.

[0059] In the sunlight cover module, import the sunlight vector generated in the previous step, the outline boundary of the plot to be analyzed, the surrounding sunlight influencing element surfaces (such as the bottom surface of the surrounding plots or the windows of the surrounding buildings), set the analysis grid scale, define the sunlight cover mode as the sunlight rights mode (solar rights) and set it to run, so as to generate the maximum construction height surface in the analysis site that can guarantee the sunlight duration of the surrounding sunlight influencing element surfaces.

[0060] Generate a solar impact envelope. Import the maximum building height surface lattice information obtained from the solar cover analysis into the Patch module in Grasshopper to generate a surface. This surface is then extruded along the -z axis to ensure that the resulting volume encompasses the entire ground space of the analysis site. Then, extruded along the z axis from the boundary of the analysis area to ensure that the resulting volume exceeds the maximum building height surface. Create a solid intersection between the two volumes to generate the final solar impact envelope.

[0061] Figure 3 shows the process diagram for generating a sunlight envelope. Based on the surrounding conditions of the plot to be analyzed, its sunlight impact factor is the sunlight standard requirements for surrounding residential buildings, which must ensure at least two hours of full window sunlight on the winter solstice. By setting the sunlight impact factor face group to obstacles and entering the analysis plot's boundaries into the geometry method, a sunlight impact envelope volume can be generated (Figure 4).

[0062] Furthermore, sightline elements include factors or historical resource points outside the site that require sightlines.

[0063] Furthermore, the production steps of the visual envelope include:

[0064] Identify and analyze the visual control elements around the site (such as streets, protected buildings, and public green spaces), and design a visual control method. For example, on a protected street, pedestrians on both sides of the street should be able to see the sky at least at the maximum vertical angle when looking vertically toward the street interface. Alternatively, key visual control points around the site should be able to see visual corridors to other scenic features (such as protected buildings) inside and outside the site. Visual control is rarely explicitly stipulated in planning regulations, so the designer can design and determine the control method.

[0065] Based on the determined sight line control elements and control methods, a three-dimensional model of the sight line control area is generated.

[0066] As shown in Figure 5, several protected landscape roads surround the parcel under analysis. The design requires that pedestrians, when looking vertically toward the street interface of the analysis site, should be able to see the sky at least at the maximum horizontal angle (45°), as shown in Figure 6. In 3D modeling software, a 45-degree chamfered pyramid volume is constructed, using the blocks on the left and right sides of the road as the base. A Boolean operation is performed on this volume and the volume above the analysis site to obtain the buildable area within the site constrained by this condition, thus forming the sightline control envelope.

[0067] Performing a Boolean intersection operation on the sunlight control envelope and the sightline control envelope obtained above yields a constructible envelope for the analysis area that satisfies both sunlight and sightline requirements (Figure 7). Then, by setting an appropriate gradient size, the envelope is fitted into a stepped form (Figure 8). This allows the creation of a height control plan suitable for planning and control.

[0068] Furthermore, the data indicators include building area, building density and floor area ratio.

[0069] Finally, citing the patent "Digital Generation Method of Building Volume Based on Morphological Types in Urban Design," publication number CN115292789B, the generated envelope predicts potential morphological textures and quantifies them, generating corresponding data indicators such as building area, building density, and volume ratio. Comparing these indicators with existing plans further helps designers understand the potential for and possible ways to expand the site.

[0070] Another embodiment of the present invention provides a system for analyzing the spatial capacity expansion potential of urban historical conservation areas, including the following modules:

[0071] Input module, used to input the urban area to be studied and to delineate the plots to be studied for capacity expansion within the area;

[0072] The determination module is used to determine the influencing sunlight factors and sightline factors around the plot of land for capacity expansion research, and generate a three-dimensional model based on the plot;

[0073] A generation module, used to generate a sunlight envelope of an urban area according to sunlight elements, and to generate a sight envelope of an urban area according to sight elements;

[0074] The processing module is used to perform intersection processing on the sunlight envelope and the sightline envelope to obtain the buildable area within the research scope, and then perform gradient fitting processing on the envelope after the intersection processing to generate a highly controlled plane gradient map;

[0075] The output module is used to predict the potential texture morphology based on the highly controlled plane gradient map, present it quantitatively, and obtain the data indicators of the adjusted plot.

[0076] The embodiments of the present application can be provided as methods or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiments of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and translated scripting language JavaScript, etc.

[0077] The present application is described with reference to the flow chart and / or block diagram of the method, device (system), and computer program product according to the embodiment of the present application. It should be understood that each flow process and / or box in the flow chart and / or block diagram and the combination of the flow process and / or box in the flow chart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processing machine or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one flow chart flow or multiple flows and / or one box or multiple boxes of the block diagram.

[0078] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0079] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0080] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A method for analyzing the spatial expansion potential of urban historical conservation areas, characterized in that: include: Input the urban area to be studied and delineate the plots within the urban area where the capacity increase study is to be conducted; Determine the sunlight and sightline factors that have an impact on the plot of land to be studied, and generate a three-dimensional model based on the plot; Generate a sunshine envelope of the urban area according to sunshine elements, and generate a sight envelope of the urban area according to sight elements; The sunshine envelope and the sight envelope are intersected to obtain the buildable area within the research scope, and then the envelope after intersection processing is gradient-fitted to generate a highly controlled plane gradient map; Based on the highly controlled plane gradient map, the potential texture morphology is predicted and quantitatively presented to obtain the data indicators of the adjusted plot.

2. The method for analyzing the spatial capacity expansion potential of urban historical conservation areas according to claim 1 is characterized by: The sunlight elements include the sunlight requirements of surrounding residential buildings affected by the construction on the site.

3. The method for analyzing the spatial capacity expansion potential of urban historical conservation areas according to claim 2 is characterized by: The sunshine factor satisfies that the surrounding residential buildings have at least 2 hours of full window sunshine on the winter solstice. The surface group of the sunshine influencing factor is set to obstacles, and the boundary of the studied plot is input into geometry to generate a sunshine envelope.

4. The method for analyzing the spatial capacity expansion potential of urban historical conservation areas according to claim 3 is characterized by: The generation of the sunlight envelope is based on the Grasshopper visual programming platform and the Ladybug analysis plug-in to compile and generate the program. The specific steps are as follows: Obtain the standard annual meteorological data of the city where the urban area to be studied is located, use the climate import module in the Ldaybug plug-in system in Grasshopper to import the meteorological data into the model, and use the climate analysis tool in the Ladybug plug-in to import the geographical location information in the meteorological data into the sun track module; Use the solar trajectory module to generate and analyze the sun's trajectory throughout the year for the site, set the sunshine time period required to ensure the surrounding sunshine influencing factors, generate the sun's trajectory on the research site during the sunshine time, and import the generated sunshine vector information into Ladybug's sunshine cover module; In the sunshine cover module, import the sunshine vector generated in the previous step, the boundary of the plot to be studied, the surrounding sunshine impact element surface, set the analysis grid scale, define the sunshine cover mode as the sunshine right mode and set it to run, and generate the maximum construction height surface that can guarantee the sunshine duration of the surrounding sunshine impact element surface in the urban area to be studied; Import the maximum construction height surface lattice information obtained from the sunshine cover analysis into the patch module in Grasshopper to generate a surface. Extrude a length of the surface in the -z axis direction to ensure that the generated block can contain the ground space of the entire analysis site. Then, extrude a length from the boundary of the plot in the analysis range in the z axis direction to ensure that the generated block exceeds the maximum construction height surface. The two volumes are interlaced to generate a sunshine envelope.

5. The method for analyzing the spatial capacity expansion potential of urban historical conservation areas according to claim 1 is characterized by: The sight elements include factors or historical resource points outside the site that require sight.

6. The method for analyzing the spatial capacity expansion potential of urban historical conservation areas according to claim 5 is characterized by: The production steps of the sight envelope include: Determine and analyze the sight control elements around the urban area and design and determine the sight control methods, where the sight control elements include streets, protected buildings and public green spaces; According to the determined sight line control elements and control methods, a three-dimensional model of the sight line control area is generated, and a sight line envelope is generated according to the three-dimensional model of the sight line control area.

7. The method for analyzing the spatial expansion potential of urban historical conservation areas according to claim 1 is characterized by: The data indicators include building area, building density and floor area ratio.

8. A spatial expansion potential analysis system for urban historical conservation areas, characterized in that: Includes the following modules: An input module for inputting the urban area to be studied and delineating the plots to be studied for capacity expansion from within the said area; The determination module is used to determine the sunlight elements and sight elements that have an impact on the surrounding area of ​​the land for capacity expansion research, and to generate a three-dimensional model based on the land; A generating module, used for generating a sunshine envelope of the urban area according to sunshine elements, and generating a sight envelope of the urban area according to sight elements; The processing module is used to perform intersection processing on the sunshine envelope and the sight envelope to obtain the buildable area within the research scope, and then perform gradient fitting processing on the envelope after the intersection processing to generate a highly controlled plane gradient map; The output module is used to predict the potential texture morphology based on the highly controlled plane gradient map, present it quantitatively, and obtain the data indicators of the adjusted plot.

9. A computer-readable storage medium storing one or more programs, characterized in that: The one or more programs include instructions which, when executed by a computing device, cause the computing device to perform any one of the methods according to claims 1-7.

10. A computing device, characterized in that include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for executing any of the methods according to claims 1-7.

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