建筑施工阶段碳足迹计算与分析研究

Calculation and Analysis of Carbon Footprint during Building Construction

依据建筑全生命周期理论,对建设工程施工阶段碳足迹计算范围进行了界定;同时,将建设工程施工阶段划分为建筑材料运输和现场机械施工两个环节,并运用碳排放系数法分别建立了两个环节的碳足迹计算模型。以分部工程为研究对象,计算分析了各分部工程和各个环节的碳足迹构成情况。计算结果表明施工阶段碳足迹主要来源于现场机械施工环节,占比在50%以上。此研究结果可以为施工企业开展建筑节能减排活动,优化施工方案提供数据支撑。

According to the theory of building life-cycle,the calculation scope of carbon footprint in the construction stage of the construction project is defined.At the same time,the construction stage of the construction project is divided into two parts:the transportation of building materials and the on-site mechanical construction.The carbon footprint calculation models of the two parts are established by using the carbon emission coefficient method.Taking a real project as example,the carbon footprint of each project and link are calculated and analyzed.The calculation results show that:the carbon footprint of the construction phase mainly comes from the mechanical construction of the site,accounting for more than 50%.The results of this study can provide data support for construction enterprises to carry out building energy saving and emission reduction activities and optimize the construction scheme.