基于碳排放量的机械施工方案比选研究

Comparison Study of Mechanical Construction Schemes based on Carbon Emissions

为了对建设工程施工阶段的碳排放进行预测与控制,以期达到碳减排的目的,有必要对机械施工方案的碳排放进行事先计算分析。针对某土方工程的机械施工方案,通过建立碳排放计算模型以及施工方案比选模型,对备选施工方案的碳排放量及功能单位碳足迹进行了详细计算与对比。研究结果表明:土方工程施工中,机械施工方案一的碳排放量小于机械施工方案二的碳排放量;机械施工方案一比机械施工方案二碳减排为0.28kgCO2eq/m^3,土方工程机械施工方案一施工比机械施工方案二施工更环保。此研究给建筑施工企业提供了施工方案的比选方法,可帮助企业达到预测和控制碳排放的目的。

In order to predict and control the carbon emissions in the construction stage of construction projects,so as to achieve the purpose of carbon emission reduction,it is necessary to calculate and analyze the carbon emissions of mechanical construction scheme in advance.Aiming at the mechanical construction scheme of an earthwork project,the carbon emission calculation model and the construction scheme evaluation model were established to calculate and compare the carbon emissions and functional unit carbon footprint of alternative construction schemes.The results show that in earthwork construction the carbon emission of mechanical construction scheme I is less than that of mechanical construction scheme Ⅱ;the carbon emission reduction of mechanical construction scheme I is 0.28 kgCO2 eq/m3 compared with mechanical construction scheme Ⅱ,and the construction of earthwork mechanical construction scheme I is more environmentally friendly than mechanical construction scheme Ⅱ.This study provides construction enterprises with a method of comparison and selection of construction schemes,which can help enterprises achieve the purpose of predicting and controlling carbon emissions.