建筑工程主体施工阶段二氧化碳排放研究

Research on carbon dioxide emissions of the main building at construction stage

随着城镇化进程的不断加速,建筑工程在全国能源消耗和碳排放量所占比例不断上升,对环境的影响程度也逐渐加大.本文利用系统动力学,将建筑工程项目主体结构施工阶段划分为5个不同的子系统,利用系统动力学软件Vensim分析主体结构施工阶段二氧化碳的排放量,并确定环境影响的主要子系统,为今后在实施绿色施工时,有针对性的改进工作提供了有效依据.经过分析比较得出,商品混凝土工程排放二氧化碳所占比重最大,其次依次为模板工程、钢筋工程、运输工程、脚手架工程.

With the development of the urbanization process, the constructional engineering＇s energy consumption and carbon emissions rate is becoming higher and higher and its effects on environment are more and more distinctive. Based on the system dynamics theory, this article divides the constructional engineering program＇s main structure construction stage into 5 different subsystems, in analyzing carbon dioxide emissions at construction stage with VENSIM and determining the main subsystem that affect the environment. This system provides effective basis for the targeted improvements for the implementation of green construction. As a results, the carbon dioxide emissions of commercial concrete projects accounted for the largest proportion, which is followed by the order of formwork engineering, steel engineering, transportation engineering and scaffold engineering.