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利用碳排放系数法建立了建筑结构全寿命周期的碳排放模型,并以4幢建筑形式、结构形式各异的建筑作为算例进行推演。计算结果表明,建造阶段的碳排放量占到建筑结构全寿命周期总量的40%~50%,其中建材生产是主要排放源。在不同的结构形式之间,钢筋混凝土结构的排放量大大高出钢结构。针对以上结论,对结构的建造阶段提出了相应的减排措施,以逐步实现“绿色建造”。
A carbon emission model for the entire life cycle of a building structure was established by using the carbon emission coefficient method. Four building types and structures with different structures were deduced. The calculation results show that the carbon emission in the construction phase accounts for 40% ~ 50% of the total life cycle of the building structure, of which building materials production is the main source of emissions. Between different forms of structure, the discharge of reinforced concrete structures is much higher than the steel structure. In view of the above conclusion, the corresponding emission reduction measures are proposed for the construction phase of the structure so as to realize “green building” step by step.