城市地下交通基础设施系统全生命周期碳排放计算模型

A Carbon Emission Calculation Model for Urban Underground Transportation Infrastructure Systems in the Entire Lifecycle

摘要:

气候变化是当前世界面临的主要挑战之一，其中人类生产活动制造的温室气体是导致气候变化的主要因素之一，准确评估温室气体的排放量是实现节能减排的重要环节。城市地下交通基础设施系统具有防治交通阻塞、增加城市绿化面积，能够实现节能减排。然而，目前还缺乏城市地下交通基础设施系统的碳足迹计算方法。在全生命周期碳足迹评估框架内，研究了城市地下交通基础设施系统的碳足迹计算边界和尺度，提出了地下交通基础设施全生命周期碳足迹计算模型，基于计算模型，建立了城市地下交通基础设施系统碳排放计算方法。结合某工程案例，揭示了城市地下交通基础设施系统总体及各阶段的碳排放规律，针对不同阶段的碳排放特点，给出了相应的节能减排放建议和措施。

Abstract:

Climate change is one of the most pressing global challenges, with greenhouse gases generated by human activities being a key contributor. Accurate assessment of greenhouse gas emissions is essential for achieving energy conservation and emission reduction goals. Urban underground transportation infrastructure systems help mitigate traffic congestion, increase urban green space, and contribute to energy savings and emissions reduction. However, there is currently no comprehensive method for calculating the carbon footprint of these systems. Within the framework of a full lifecycle carbon footprint assessment, this study examines the boundaries and scales for calculating the carbon footprint of urban underground transportation infrastructure systems. A full lifecycle carbon footprint calculation model is developed for underground transportation infrastructure, and based on this model, a method for calculating carbon emissions from these systems is proposed. Using a case study of a specific project, the overall and stage-specific carbon emission patterns of the urban underground transportation infrastructure system are revealed. Recommendations and measures for energy conservation and emissions reduction are provided, tailored to the emission characteristics of different lifecycle stages.