街道峡谷几何形态规划要素对太阳能潜力的影响研究

STUDY ON THE INFLUENCE OF PLANNING ELEMENTS ABOUT GEOMETRIC SHAPES OF STREET CANYONS ON SOLAR POTENTIAL

街道峡谷是城市建成环境中重要的空间类型,优化其几何形态有利于高效利用街道峡谷的太阳能潜力。通过对西安建成区街道峡谷几何空间形态对太阳能潜力影响的分析,借助CitySim软件模拟,研究双变量模型分析街道峡谷几何形态规划要素与太阳能潜力的相关性。结果表明:西安典型城市街道峡谷样本逐月太阳辐射量变化情况整体呈"先增后减、再增再减"的特征;街道朝向是影响街道峡谷太阳能潜力的关键几何形态规划要素;街道高宽比与太阳能潜力呈负相关。

A street canyon is an important space type in the built environment of cities.Optimization of geometry shapes is conducive to the efficient use of solar potential street canyons.The influence of geometrical spatial forms of street canyons on solar potential in Xi’an built-up areas.CitySim was used to simulate the solar potential of a typical urban street canyon,and correlations between planning elements about geometry shapes of street canyons and the solar potential were analyzed by a bivariate model.The results showed that the monthly solar radiation of street canyons in Xi’an showed a general characteristic of"increasing first and then decreasing,next increasing and then decreasing".The street orientation was a key planning element for the geometric shape affecting solar potential of street canyons.The street aspect ratio was negatively related to solar potential.