建筑工程施工机械碳排放研究
摘要：对建筑施工过程产生的二氧化碳(CO2)排放进行了研究。建立了基于工程消耗量定额和施工机械碳排放因子的CO2排放量计算方法，并以商业建筑和学校建筑2个案例为对象对施工碳排放进行了研究。结果表明，2栋建筑施工过程的单位面积CO2排放量分别为11.5kgCO2/m2和11.6kgCO2/m2。计算了土石方工程、桩基工程、砌筑工程、混凝土工程、钢筋工程、模板工程、装饰工程以及措施项目的CO2排放量。结果表明，桩基工程和措施项目排放的CO2最多，贡献超过50%的CO2排放，其次是钢筋工程和混凝土工程，模板和砌筑工程排放的CO2很少。对不同类型施工机械的CO2排放量进行了研究，结果表明，排在前10位的机械约占总CO2排放量的90%。塔式起重机、电焊机、钻机、打桩机、载重汽车、挖掘机和混凝土泵车是CO2排放量最大的机械。这些研究结果可以帮助施工管理者确定低碳施工方法和机械，以便在施工阶段最大限度地减少碳排放。
关键词：碳排放碳中和碳排放因子施工机械建筑工程
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Research on Carbon Emission of Construction Machinery in Construction Engineering
Abstract: This paper studies the carbon dioxide(CO2) emissions from the construction process. The calculation method of CO2 emission based on engineering consumption quota and carbon emission factor of construction machinery is established, and two cases of commercial buildings and school buildings are taken as examples to study the construction carbon emission. It's shown that the unit CO2 emission for the two buildings' construction process are 11.5 kgCO2/m2 and 11.6 kgCO2/m2, respectively. The CO(2 )emissions for earthwork, foundation work, masonry, concrete work, reinforcement work, formwork, decoration work and measurement work during construction were calculated. The results showed that foundation work and measurement work emitted the most CO2, contributing more than 50% CO2 emission, following by reinforcement work and concrete work. Formwork and masonry work emitted very little CO2. The CO2 emission of different machines were also studied, and the results show that the top 10 machines can take up about 90% of the total CO2 emission. Tower crane, electric welding machine, drilling rig, pile driver, truck, excavator and concrete pump are some of the most CO2 emission machines. These results could help construction managers identify low carbon construction methods and machines in order to maximize the carbon reduction opportunity during the construction stage.
Keywords: carbon emission; carbon neutralization; carbon emission factor; construction machinery; construction engineering
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