预制构件对建筑碳排放量的影响研究——以浙江省某预制装配建筑为例

Study on the Impact of Prefabricated Components on Carbon Emissions of Buildings:Taking One Prefabricated Assembly Building in Zhejiang Province as an Example

在建筑中使用预制构件是降低建筑碳排放量的有效途径之一,研究对不同的预制构件和现浇构件分别进行了计算,使建筑的碳排放量达到最低。首先对预制构件和现浇构件的碳排放阶段进行了划分,再用碳排放因子法建立了各阶段的碳排放量计算模型,并结合实际案例分析了预制构件相较于现浇构件降低的碳排放量。结果表明:预制梁、预制墙的碳排放量低于现浇梁、现浇墙,在预制率为44%时,案例中预制装配建筑的碳排放量最低。预制构件对于降低建筑碳排放量具有显著效果。

Using prefabricated components in buildings is one of effective ways to reduce the carbon emissions of buildings.This study calculates different prefabricated components and cast-in-place components separately to minimize the carbon emissions of buildings.Firstly,the carbon emission stages of prefabricated and cast-in-place components are divided,and then the carbon emission calculation model of each stage is established by the carbon emission factor method,and the carbon emission reduction of prefabricated components compared with cast-in-place components is analyzed with actual cases.The results show that the carbon emissions of prefabricated beams and prefabricated walls are lower than those of cast-in-place beams and cast-in-place walls,and the carbon emissions of prefabricated assembled buildings in the case are the lowest when the prefabrication rate is 44%.It is significantly effective for prefabricated components to reduce carbon emissions of buildings.