钢结构住宅建筑部品生命周期详单分析

Detailed Life Cycle Inventory Analysis of Building Components in Steelconstruction Residential Buildings

摘要:

对某钢结构住宅小区内3幢不同层数建筑施工过程的建材耗量、建材来源进行调研统计,并结合BESLCI软件计算建筑结构、围护结构的生命周期能耗及环境排放.结果表明,钢构件、混凝土和水泥的生命周期能耗共占钢结构住宅建筑部品生命周期能耗的60%以上,钢结构住宅施工生命周期能耗仅为常规结构住宅的50%左右,建筑体量对钢结构住宅建筑部品生命周期清单影响不大.同国内外其他学者的钢结构建筑生命周期清单分析结果进行了比较,差异较大,分析发现数据获取的精确性、研究边界划分的合理性及缺少标准的清单分析数据库是造成差异的主要原因.

Abstract:

An insitu research was made to investigate the building material consumption and source of three steelconstruction residential buildings with different volumes.Then a comparative study was made of the life cycle energy consumption and environmental emissions of building structures and envelops with the BESLCI software.Results show that the steel component,concrete and cement consume more than 60% of the total life cycle energy;the life cycle energy consumption of steel construction residential building during construction stage is only 50% of that of conventional structure.The building volumes have little impact on inventory analysis results per building area unit.The results are different from the former research results because of the accuracy of inventory data,rationality of research boundary partition and the shortage of inventory analysis data base.