城市地下交通基础设施系统全生命周期碳排放计算模型∗

Full Lifecycle Carbon Emission Calculation Model for Urban Underground Transportation Infrastructure Systems

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、 增加城市绿化面积等优势，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 significant challenges facing the world today, with green house gas emissions from human activities being a primary driver. Precise evaluation of these emis sions is crucial for achieving energy conservation and emission reduction. Urban underground transpor tation infrastructure systems, which help alleviate traffic congestion and expand urban green spaces, play a key role in achieving energy conservation and emission reduction. However, there is currently no method for calculating the carbon footprint of these systems. This study addressed this gap by de veloping a carbon footprint calculation model within a full lifecycle assessment framework, specifically for urban underground transportation infrastructure. The model established a methodology for carbon emission calculations, which was then applied to a case study to analyze carbon emission patterns across the system's lifecycle and at various stages. Tailored recommendations and measures for energy conservation and emission reduction were proposed based on the distinct emission characteristics of each stage.