绿色建筑屋顶结构的节能优化分析

Energy Saving Optimization of Green Building Roof Structure

针对不同建筑屋顶结构特征,采用PKPM软件建立了架空通风屋顶﹑种植屋顶﹑蓄水屋顶﹑铺设保温材料下的屋顶结构模型,分析了不同屋顶结构和保温层材料下的建筑节能率.研究结果表明:高层建筑中,架空通风屋顶﹑种植屋顶﹑蓄水屋顶﹑铺设保温材料屋顶的建筑节能率均高于50%,满足相关规定要求,其中架空通风屋节能率最高,蓄水屋顶的节能率次之;在相同节能材料厚度下,挤塑聚苯板的节能率最高,聚氨酯泡沫塑料节能率次之,TH复合保温板的节能率最大;当保温材料相同时,随着保温层厚度的增加,在厚度小于10 mm时,架空通风屋顶节能效果最佳,当保温层厚度增加到20 mm后,蓄水屋顶和种植屋顶大幅提高.

According to different structural characteristics of building roofs,PKPM software is utilized to establish roof structure model under the condition of ventilated roof,planting roof,water storage roof and roof with thermal insulation material.The energy saving rate of different roof structures and insulation layers are analyzed.The results show that in high-rise buildings,the energy saving rate of ventilated roof,planting roof,water storage roof and roof with insulation material are all higher than 50%,which meets the requirements of relevant regulations,among which the house with ventilated roof has the highest energy saving rate,the energy saving rate of water storage roof is the second;Under the same thickness of energy-saving materials,the energy saving rate of extruded polystyrene board was the highest,polyurethane foam was the second,the energy saving rate of TH composite insulation board was the highest.With the same insulation material,the energy saving effect depends on the thickness of material-the energy saving effect of the ventilated roof is the best while the material thickness is less than 10 mm,that of the water storage roof and planting roof increase greatly while the thickness increases to 20 mm.