CN-121981341-A - Urban updating planning system and method based on urban space climate adaptability

CN121981341ACN 121981341 ACN121981341 ACN 121981341ACN-121981341-A

Abstract

The invention discloses a city updating planning system and method based on city space climate adaptability, which relates to the technical field of city updating planning, integrates topography data, water system distribution data and building microcosmic form data of an old area, constructs a three-dimensional space model of the old area, analyzes a dominant mechanism of topography fluctuation on local air flow, simultaneously identifies a cold air generation area and a heat island gathering area, draws a wind environment base map and is based on the wind environment base map, the method comprises the steps of identifying an airflow stagnation area and a heat accumulation core area, simulating an induced air path by combining a dominant wind direction in summer, simulating a cold wind penetration area by combining a dominant wind direction in winter, and screening an optimal ventilation gallery layout scheme adapting to the climate characteristics of the area by combining proper temperatures of local residents.

Inventors

ZHANG XUANFENG
Qi Chuo
Yu Shanchu
SONG YAN
ZHANG XIAOFEI
YIN YAPING

Assignees

山东建筑大学设计集团有限公司

Dates

Publication Date: 20260505
Application Date: 20260408

Claims (8)

1. The city updating and planning method based on city space climate adaptability is characterized by comprising the following specific steps: integrating topography data, water system distribution data and building microscopic morphology data of an old area to construct a three-dimensional space model of the old area; Analyzing a dominant mechanism of relief on local air flow, identifying a cold air generation area and a heat island gathering area at the same time, and drawing a wind environment base map; step three, based on a wind environment base map, identifying a airflow stagnation area and a heat accumulation core area, simulating a wind guiding path by combining a dominant wind direction in summer and simulating a cold wind penetration area by combining a dominant wind direction in winter; And step four, screening out an optimal ventilation gallery layout scheme adapting to the climate characteristics of the region by combining the proper temperature of local residents.
2. The urban space climate adaptability-based urban update planning method according to claim 1, wherein said step one comprises the following specific steps: Integrating the topography data of the old area, the water system distribution data and the building microscopic morphology data one by one, wherein the topography data comprises DEM grid data, the water system distribution data comprises water surface boundary coordinates, water body width and water body surface temperature, and the building microscopic morphology data comprises building bottom contour coordinates and building height; Step two, constructing a three-dimensional space model of an old area, wherein DEM grid data are converted into an irregular triangular net to construct a terrain base, the bottom plate elevation is queried according to the read contour coordinates of the bottom layer of the building, the building height is combined with the building height to stretch to generate a three-dimensional body block, the top elevation of the building is obtained through the sum of the bottom plate elevation and the building height to construct the building body block, the elevation of the building body block is marked by the extracted water surface boundary coordinates and is embedded into the three-dimensional space model of the old area as a smooth medium surface to limit a water system space.
3. The urban space climate adaptability-based urban update planning method according to claim 2, wherein the second step comprises the following specific steps: Step two, acquiring a gradient based on a gradient calculation formula, acquiring windward surface density based on a windward surface density calculation formula, and acquiring surface roughness including water surface area roughness, building area roughness and mixed area roughness, wherein the mixed area roughness is acquired by weighting and summing the water surface area roughness and the building area roughness, acquiring air flow speed of terrain drive based on a terrain drive gravity flow calculation formula, and acquiring river and land circulation speed based on a water system induced thermal circulation calculation formula; Step two, acquiring a windward surface density threshold value, a water body surface temperature threshold value, a terrain-driven airflow speed threshold value and a river-land airflow circulation speed threshold value, screening the terrain-driven airflow speed to be greater than or equal to the terrain-driven airflow speed threshold value or the river-land airflow circulation speed to be greater than or equal to the river-land airflow circulation speed threshold value, setting a corresponding area as a cold air generation area, screening the windward surface density to be greater than or equal to the windward surface density threshold value and the terrain-driven airflow speed to be less than the terrain-driven airflow speed threshold value, and setting the corresponding area as a heat island gathering area; Step two, acquiring a comprehensive local wind speed based on a comprehensive wind speed calculation formula, acquiring a local wind speed threshold value, setting an area corresponding to the comprehensive local wind speed larger than the local wind speed threshold value as an air duct, drawing a wind environment base map, wherein the air duct is drawn to be blue, a heat island gathering area is drawn to be red, and a cold air generation area is drawn to be green.
4. A method of urban update planning based on climate adaptation of urban spaces according to claim 3, characterized in that said step three comprises the following specific steps: Step three, acquiring an airflow blocking index based on an airflow blocking calculation formula, and setting a region corresponding to the airflow blocking index larger than a value 1 as an airflow blocking region; step three, acquiring a heat accumulation potential index based on a heat accumulation calculation formula, acquiring a heat accumulation potential threshold value, and setting a region corresponding to the heat accumulation potential index larger than the heat accumulation potential threshold value as a heat accumulation core region; Step three, acquiring a summer dominant wind direction, acquiring accumulated resistance cost based on a resistance cost calculation formula, and generating a plurality of induced air paths by taking a cold air generation area as a starting point and a heat accumulation core area as a target point; And thirdly, acquiring a dominant wind direction in winter and a local cold wind speed threshold value, acquiring a local cold wind speed based on a local cold wind speed calculation formula, and setting a region corresponding to the local cold wind speed greater than the local cold wind speed threshold value as a cold wind penetration region.
5. The urban space climate adaptability-based city update planning method of claim 4, wherein the fourth step comprises the following specific steps: Step four, acquiring coordinates of a central point of a cold wind penetration area and a airflow stagnation area, and acquiring average distances from each induced wind path to all the cold wind penetration areas and average distances from each induced wind path to all the airflow stagnation areas; Step four, acquiring average air flow temperature of each induced air path, and acquiring proper local resident temperature and resident sensitive weight, wherein the proper local resident temperature comprises resident summer comfort temperature and resident winter comfort temperature, and the resident sensitive weight comprises resident summer sensitive weight and resident winter sensitive weight; Normalizing the resistance cost, the average distance from the induced air path to all cold wind penetration areas, the average distance from the induced air path to all airflow stagnation areas and the average airflow temperature to obtain a resistance cost evaluation item, a cold wind penetration area distance evaluation item, an airflow stagnation area distance evaluation item and a temperature evaluation item, wherein the temperature evaluation item comprises a summer temperature evaluation item and a winter temperature evaluation item; Fourth, obtaining a comprehensive score of the induced air path through weighted summation of a resistance cost score, a cold wind penetration area distance score, an air flow blocking area distance score, a summer temperature score and a winter temperature score, wherein the weight corresponding to the resistance cost score, the air flow blocking area distance score and the summer temperature score is obtained by multiplying an initial weight by a resident summer sensitivity weight, and the weight corresponding to the cold wind penetration area distance score and the winter temperature score is obtained by multiplying the initial weight by the resident winter sensitivity weight; And step four, screening the induced air path corresponding to the highest comprehensive score value of the induced air path, and setting the induced air path as an optimal ventilation gallery layout scheme adapting to the climate characteristics of the region.
6. The urban updating planning system based on urban space climate adaptability is used for realizing the urban updating planning method based on urban space climate adaptability according to any one of claims 1-5, and is characterized by comprising a three-dimensional space construction module, a three-dimensional space model and a three-dimensional space model, wherein the three-dimensional space construction module is used for integrating the terrain data, the water system distribution data and the building microscopic morphology data of an old area; the wind environment map drawing module is used for analyzing a dominant mechanism of relief on local air flow, identifying a cold air generation area and a heat island gathering area at the same time, and drawing a wind environment base map; The regional division module is used for identifying the airflow stagnation region and the heat accumulation core region based on the wind environment base map, simulating a wind guiding path by combining the dominant wind direction in summer and simulating a cold wind penetration region by combining the dominant wind direction in winter; And the corridor scheme screening module is used for screening out an optimal ventilation corridor layout scheme adapting to the climate characteristics of the region by combining the proper temperature of local residents.
7. A storage medium comprising stored instructions, wherein the instructions, when executed, control a device in which the storage medium is located to perform the urban space climate adaptation-based urban update planning method according to any of claims 1-5.
8. An electronic device comprising a memory and one or more instructions, wherein the one or more instructions are stored in the memory and configured to execute the urban space climate adaptation-based urban update planning method of any of claims 1-5 by one or more processors.

Description

Urban updating planning system and method based on urban space climate adaptability Technical Field The invention relates to the technical field of urban updating planning, in particular to an urban updating planning system and method based on urban space climate adaptability. Background At present, with the double influences of global climate change and rapid urban, the problems of aggravation of urban heat island effect, unsmooth ventilation and the like are increasingly outstanding, and especially in old areas with high building density and complex space morphology, the life quality of residents is seriously influenced. The gallery updating planning of the old area has the following limitations that firstly, most researches focus on wind environment analysis of a single scale or a single season, comprehensive three-dimensional modeling of the topography, the water system and the building microscopic morphology of the old area is lacked, comprehensive influences of complex undersides on local airflows are difficult to reflect accurately, secondly, when a cold air generation area and a heat island gathering area are identified, most of the prior art is based on surface coverage types or temperature inversion, a dominant mechanism of relief on the local airflows is not integrated systematically, so that the drawing fineness of a wind environment base map is lower, and thirdly, when the optimal ventilation gallery is screened, the actual thermal comfort requirement and cold and heat tolerance characteristics of local residents are considered from the aspect of physical environment, so that the planning scheme and resident perception are disjointed. Disclosure of Invention In view of the above, the invention provides a city updating planning system and method based on city space climate adaptability, which overcomes the defects of single scale, season splitting and neglecting resident demands in the prior art, and remarkably improves the accuracy and practicability of old area ventilation gallery planning through three-dimensional data integration, airflow mechanism analysis, accurate path simulation and resident proper temperature combination. In order to achieve the above purpose, the present invention provides the following technical solutions: In a first aspect, the present invention provides a city update planning method based on city space climate adaptability, comprising the following specific steps: integrating topography data, water system distribution data and building microscopic morphology data of an old area to construct a three-dimensional space model of the old area; Analyzing a dominant mechanism of relief on local air flow, identifying a cold air generation area and a heat island gathering area at the same time, and drawing a wind environment base map; step three, based on a wind environment base map, identifying a airflow stagnation area and a heat accumulation core area, simulating a wind guiding path by combining a dominant wind direction in summer and simulating a cold wind penetration area by combining a dominant wind direction in winter; And step four, screening out an optimal ventilation gallery layout scheme adapting to the climate characteristics of the region by combining the proper temperature of local residents. Preferably, the first step includes the following specific steps: Integrating the topography data of the old area, the water system distribution data and the building microscopic morphology data one by one, wherein the topography data comprises DEM grid data, the water system distribution data comprises water surface boundary coordinates, water body width and water body surface temperature, and the building microscopic morphology data comprises building bottom contour coordinates and building height; Step two, constructing a three-dimensional space model of an old area, wherein DEM grid data are converted into an irregular triangular net to construct a terrain base, the bottom plate elevation is queried according to the read contour coordinates of the bottom layer of the building, the building height is combined with the building height to stretch to generate a three-dimensional body block, the top elevation of the building is obtained through the sum of the bottom plate elevation and the building height to construct the building body block, the elevation of the building body block is marked by the extracted water surface boundary coordinates and is embedded into the three-dimensional space model of the old area as a smooth medium surface to limit a water system space. Preferably, the second step includes the following specific steps: Step two, acquiring a gradient based on a gradient calculation formula, acquiring windward surface density based on a windward surface density calculation formula, and acquiring surface roughness including water surface area roughness, building area roughness and mixed area roughness, wherein the mixed area roughness is acquired by weighting