【摘要】 岭南地区建筑架空层因其遮阳通风而具有良好的舒适性，成为人们室外休憩活动的重要空间。为进一步探索架空层舒适性与其周边景观要素之间的关系，本文以广州某大学内架空建筑为研究对象，通过CFD三维模拟软件ENVI-met，模拟不同景观要素变量类型对其架空空间的热舒适性影响，探究景观要素对架空层热舒适性的提升策略。模拟结果发现下垫面为花岗石与透水砖对架空层内的热舒适性影响效果相近且生理等效温度（PET）值最高，下垫面为草地可略微降低架空层PET值，下垫面为水体可有效降低架空层内的空气温度、相对湿度和平均辐射温度，从而大幅降低PET值，提高架空层热舒适性。在植物种植上增加乔木尺寸（HW）、叶面积密度（LAD）值、植物间高宽比（ART）值可以增加架空层相对湿度降低平均辐射温度，改善架空层热舒适性。故选择合理的下垫面材质，增加乔木尺寸、叶面积密度或种植密度可显著降低架空层的PET值，提升架空层热舒适性。更多还原

【Abstract】 The overhead floor of the buildings in Lingnan region has good comfort due to its shading and ventilation, and has become an important space for people’s outdoor rest activities. In order to further explore the relationship between the comfort of overhead floor and the surrounding landscape elements, this paper takes the overhead building in an university in Guangzhou as the research object, and simulates the thermal comfort influence of different variable types of landscape element on the overhead space through CFD 3D simulation software ENVI-met to explore the improvement strategy of landscape elements to the thermal comfort of overhead space. The simulation results found that the surface of granite and permeable brick has similar effects on overhead floor in thermal comfort and highest physiological equivalent temperature(PET) value, the surface of the grass can slightly decrease the overhead floor PET value, and the surface of the water can effectively reduce the air temperature, relative humidity, and mean radiation temperature to decrease the PET markedly and to improve the thermal comfort of overhead floor. Increasing tree size(HW),the leaf area density(LAD) and aspect ratio of trees(ART) could increase relative humidity and decrease mean radiation temperature,and improve the thermal comfort of the overhead floor. Therefore,selecting reasonable underlying surface material and increasing tree size, leaf area density or aspect ratio of trees can significantly decrease the PET value and improve the thermal comfort of the overhead floor.更多还原