引用本文: 林铭欣, 李明东, 秦浩, 刘彦皓, 黄丽华, 涂烁, 吴员发, 沈兵, 谢拥军. 装配式钢结构办公建筑全生命周期碳排放计算方法研究与应用[J]. 工程科学学报.
LIN Mingxin, LI Mingdong, QIN Hao, LIU Yanhao, HUANG Lihua, TU Shuo, WU Yuanfa, SHEN Bing, XIE Yongjun. Research and application of carbon emission calculation methods for the whole life cycle of assembled steel structure office buildings[J]. Chinese Journal of Engineering.
 Citation: LIN Mingxin, LI Mingdong, QIN Hao, LIU Yanhao, HUANG Lihua, TU Shuo, WU Yuanfa, SHEN Bing, XIE Yongjun. Research and application of carbon emission calculation methods for the whole life cycle of assembled steel structure office buildings[J]. Chinese Journal of Engineering.

## Research and application of carbon emission calculation methods for the whole life cycle of assembled steel structure office buildings

• 摘要: 为了系统计算装配式钢结构办公建筑的碳排放，本文构建了装配式钢结构全生命周期碳排放计算模型，借助Autodesk Revit、Tekla Structures和商业建筑热环境设计模拟工具包(DeST-C)提供了明确计算方法，以无锡中电创新园为案例，进行了全生命周期碳排放计算，并与装配式混凝土(PC)结构、现浇钢混结构进行了碳排放比较分析. 本碳排放计算模型全面考虑了建筑全生命周期的材料制备及构件生产阶段、物流转运阶段、施工建造阶段、运行维护阶段、改造再用阶段和拆除再用阶段六大阶段，涵盖了“人机料”全要素碳排放活动，并实现了钢结构构件的碳排放因子计算，具有完整性和准确性. 案例分析结果显示：装配式钢结构建筑年均碳排放强度为59.47 kg·m−2·a−1，比装配式PC结构、现浇钢混结构建筑分别减少5.46 kg·m−2·a−1、13.59 kg·m−2·a−1，展现了装配式钢结构建筑良好的减碳效果；在六大阶段中，运行阶段碳排放量最大，占比58.79%，其次是材料制备及构件生产阶段，占比29.58%，建筑拆除再用阶段碳排放量为−3295.27 t，具有良好的减碳效果；考虑可再生能源及植物碳汇因素后，减碳389.33 t. 本文提出的方法为装配式钢结构办公建筑全生命周期碳排放计算问题提供了新的解决思路，为装配式钢结构办公建筑减碳评估提供了依据.

Abstract: To accurately assess the carbon emissions associated with assembled steel structure office buildings, this study develops a comprehensive life cycle carbon emission calculation. Utilizing advanced tools such as Autodesk Revit, Tekla Structures, and DeST-C, the model offers a detailed methodology for calculating emissions. This approach adheres to the guidelines set forth in the “Standard for the Calculation of Carbon Emission from Buildings” (GB/T 51366—2019). By applying this model to the Wuxi CEC PARK case study, the research quantifies the carbon footprint of such structures and compares these findings with those of assembled precast concrete structures and cast-in-place steel–concrete structures. The model encompasses all six stages of a building’s life cycle: material preparation and component production, logistics, operation and maintenance, renovation and reuse, and finally, dismantling and recycling. This comprehensive scope ensures that the model captures the carbon emissions linked to every aspect of “human, machine and material” interactions throughout the building’s life cycle. The accuracy of the calculation results is thus guaranteed. Specifically, the analysis highlights the carbon emission factors from steel structure components within the context of Wuxi CEC PARK. The results show that the average annual carbon emission intensity for the building is 59.47 kg·m−2·a−1. This figure is approximately 5.46 kg·m−2·a−1 and 13.59 kg·m−2·a−1 lower than that of the assembled PC structure and the cast-in-place steel–concrete structure, respectively. These results underscore the beneficial impact of assembled steel structures in reducing carbon emissions. The operation stage is the largest contributor to carbon emissions, accounting for 58.79% of the total. This is followed by carbon emissions from material preparation and component production, which represent 29.58%. The study finds a negative carbon emission value of −3295.27 t in the dismantling and reuse phase, indicating a significant reduction in emissions in this phase of the building’s life cycle. Additionally, the incorporation of renewable energy sources and plant carbon sinks into the building’s design further offsets carbon emissions, contributing an additional reduction of 389.33 t. The method proposed in this paper addresses the gap in existing methodologies for full life cycle carbon emission calculations for assembled steel structure office buildings. It provides a solid foundation for such buildings, promoting the adoption of assembled steel structure office buildings. It lays a foundational framework for assessing the carbon reduction potential of these structures, thereby facilitating their wider adoption within the construction industry. It provides a reference for future research on the prediction of carbon emissions for similar office buildings and advancing carbon reduction initiatives in the construction industry.

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