合理设计和利用地下空间是确保高质量建筑落地的一个重要方面,一栋建筑的合理设计,不仅表现在地面以上的空间,地下空间的顶层设计和规划也尤为重要。在“双碳”绿色低碳引领的目标建筑设计模式下,探究合理的自然采光方案,尽量降低建造增量成本的同时节约电耗。本文以国标绿色建筑三星级、LEED金级的长沙某购物中心为例,利用动态采光数值模拟分析建立模型,量化分析在满足采光率要求下的导光筒或边庭设置梳理、尺寸及位置,探索与实际项目地下室特征相适应的自然采光设计策略,并分析了地下室的合理设计在照明能耗、碳排放等方面产生的经济效益,为未来地下室空间精细化的自然采光设计梳理出可借鉴的设计方案和规划思路。
Reasonable design and utilization of underground space is an important aspect of ensuring the landing of high-quality buildings. The reasonable design of a building is not only reflected in the above ground space, but also in the top-level design and planning of underground space. Under the target building design model of "dual carbon" green and low-carbon leadership, explore reasonable natural lighting schemes to minimize construction incremental costs while saving electricity consumption. This article takes a shopping center in Changsha, which is positioned as a national standard three-star green building and a LEED gold level green building, as an example. Using intelligent planning technology and dynamic lighting numerical simulation analysis, a model is established to quantitatively analyze the arrangement, size, and position of light guide tubes or side courtyards that meet the requirements of lighting efficiency. It explores natural ventilation and lighting design strategies that are suitable for the actual characteristics of the project basement, and analyzed the economic benefits generated by the reasonable design of the basement in terms of lighting energy consumption, carbon emissions, etc., and sorted out some design schemes and planning ideas that can be referenced for the refined natural lighting and ventilation design of future basement spaces.
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