【作者】 郭佳奕； 孙一民；

【Author】 Guo Jiayi;Sun Yimin;State Key Laboratory of Subtropical Building Science;

【机构】 亚热带建筑科学国家重点实验室；

【摘要】 利用三维建模软件Rhino、参数化平台Grasshopper以及搭载的性能模拟插件Ladybug和Honeybee,基于节能效果与采光质量两个方面,探究带有中庭的异形建筑的建筑表皮与外遮阳设计及评估流程。以广州科技图书馆项目为例,由于建筑外围护结构受到的太阳辐射影响建筑能耗,结合建筑表面累计太阳辐射、建筑造型和功能,可进行基于节能效果的表皮虚实划分。接着通过对建筑采光的模拟,核查建筑的采光系数、平均照度、自然采光满足率等采光质量指标。模拟发现由于上层建筑体量和楼板会对中庭采光产生影响,使用常规的抽出标准层模型的模拟方法得出的采光模拟结果误差较大,异形建筑方案应通过建立全模进行整体性光照分析。最后结合全模型采光分析,设计了新型外挂穿孔金属折板或光伏遮阳板幕墙的双层立面,探究了外挂金属折板降低太阳辐射的作用,并验证了外挂金属折板对眩光的改善程度。基于Ladybug与Honeybee的参数化节能效果与采光质量评估流程具有准确高效性,方便进行参数修改的多方案比较调整,帮助设计人员快速进行建筑表皮和遮阳设计。更多还原

【Abstract】 We use 3 D modeling software Rhino,parametric platform Grasshopper,and performance simulation plug-ins Ladybug and Honeybee to explore the design and evaluation process of surface and exterior shading of special-shaped buildings with atrium.The paper takes the Guangzhou Science and Technology Library project as an example.The solar radiation of the building envelope affects the building energy consumption,which is combined with the cumulative solar radiation of the building surface,the building shape and function,the virtual and real surface can be divided based on the energy saving effect.Then,through the simulation of building lighting,the lighting quality indexes such as the lighting coefficient,average illumination and natural lighting satisfaction rate of the building are checked.The simulation found that because the superstructure volume and floor slab would affect the lighting of the atrium,the lighting simulation results using the conventional simulation method of extracting the standard floor model had a large error.Therefore,the full model of the special-shaped building should be established for the overall light analysis.Finally,combined with the full model lighting analysis,the double-layer facade of the new type of external perforated metal folding plate and photovaoltaic sun visor curtain wall was designed,and the effect of the external metal folding plate on reducing solar radiation was explored,and the improvement degree of the external metal folding plate on glare was verified.The parametric energy-saving effect and daylight quality evaluation process based on Ladybug and Honeybee is accurate and efficient,which facilitates the comparison and adjustment of multiple schemes with parameter modification,helping designers to quickly design building surface and shading.更多还原