As China becomes increasingly urbanized,there have been more and more residential areas that accommodate dense population and utilize room efficiently.Although high-rise residential areas improve the use of land,in many aspects they also represent a lower quality of life.Sunlight-covered areas in residential homes have not been given enough attention,despite being an integral part of a resident’s physical and mental health.It is crucial to improve the exposure of sunlight in high-rise residential buildings.This paper uses the metropolitan Jinan area as an example,and researches on the optimization designs of sun mapping in high-rise residences.Firstly,the paper focuses on both domestic and international studies of the current sun mapping cases.By looking at the high-rises in Jinan and taking into consideration of other examples from academia,this paper summarizes the various problems in terms of current sun mapping implementation in high-rise residences.Secondly,factors such as the sun-exposure standards and the principles,methods and parameters regarding the calculation of the sunlight ratio are discussed,laying a theoretical foundation for the simulation analysis later in this paper.Additionally,the paper decides on the process of the simulation and the methods for exploring both indoor and outdoor sun mapping of high-rise residential communities from the research data and issues discovered.Sun mapping inside residential areas mainly focuses on the homes,kindergartens,elementary schools,middle schools,and nursing centers within the community,and analyzes the corresponding factors such as the distance between structures,the orientation of the architecture,the unit form of the architecture,the shape and the terrain of the utilized land.At the same time,sun mapping professionals conduct in-depth analyses on common forms of residence area layout such as the row-column design and the periphery design by looking at the entire community construction plan.Through simulations based on analyses of the building line,the conical surface created by sunlight and the dimensions of the sunlight-covered area,this paper suggests that for first level building,orientation angle and distances between buildings are critical.For second level buildings,the height angle and the layout of community are priorities-the row column design of first row being “towers” and the next row being “small huts” to allow for optimal sunlight in between and the terrace periphery design where buildings face different angles to enhance natural light exposure.For kindergartens,elementary schools,middle schools,and nursing centers,the key points lie in putting these structures right next to the boundary of the community to maximize sunlight exposure.Sun mapping in outdoor environment circles around analysis of sunlight exposure in public areas and landscapes.By looking at outdoor activities of different groups of residents and following the “law of Galveston” in the Theory of Systems to begin simulating on one single structure all the way to systemic analysis of aggregated structures formed by multiple single units,sun mapping professionals will understand the layout of the architecture,parameters to construct the architecture and the impact from factors like seasonal daytime changes.Based on real scenarios,this paper gives suggestions on how to improve sunlight exposure through analyses on landscape sunlight ratios,summer and winter daylight hour differences and the ground radiation levels.In terms of public areas for seniors,children and teens,avoiding the shadow from buildings,adjusting components of the high-rise structures nearby,and setting the right layout based on residents’ routine should be prioritized.Besides,corresponding improvements have to be made in terms of choosing the variety of plants for landscaping,building public paths and crossroads and creating public water bodies etc.Finally,the author applies the optimized methods of enhancing sunlight exposure from the simulations to an actual construction project in the city of Jinan.This paper offers systemic improvement strategies for both indoor and outdoor sunlight-covered environments.Through comparison of the past versus the present when all strategies are adopted,the author ensured that the sunlight ratio in the neighborhood is significantly improved.This paper aims at providing design methods and strategies for densely populated high-rise communities in terms of improving their sunlight-covered environments to contribute to more diversified ideas of improving our quality of living. |