基于SimaPro的公路隧道建造阶段碳排放计算与构成评估  

Calculation and Composition Assessment of the Carbon Emission in the Construction Phase of Highway Tunnels Based on SimaPro

作　　者：李嘉豪 习明星 沈奕[1] 刘安 朱合华[1] LI Jiahao;XI Mingxing;SHEN Yi;LIU An;ZHU Hehua(Department of Geotechnical Engineering,College of Civil Engineering,Tongji University,Shanghai 200092;Jiangxi Communications Investment Group Co.,Ltd.,Nanchang 330001)

机构地区：[1]同济大学土木工程学院地下建筑与工程系,上海200092 [2]江西省交通投资集团有限责任公司,南昌330001

出　　处：《现代隧道技术》2023年第6期20-28,共9页Modern Tunnelling Technology

基　　金：江西省交通运输厅科技项目(2022C0003).

摘　　要：为准确定量计算和评估公路隧道各个建设阶段的二氧化碳排放,明确碳排放的主要来源和影响机制,基于生命周期评价(LCA)方法,从公路隧道碳排放核算边界划分、清单分析、计算模型建立等方面提出标准化的核算流程。结合工程实例,利用生命周期评价工具SimaPro对不同围岩条件下的每延米隧道建设碳排放进行计算和对比分析。结果表明,随着围岩条件的劣化,每延米隧道在材料生产阶段和施工建造阶段的碳排放量显著增长;公路隧道建设中材料生产阶段的碳排放量占比最高,其中二次衬砌材料生产阶段的碳排放量占比较大,改进材料生产技术、开展衬砌结构碳减排设计研究是减少公路隧道建设碳排放总量的重要路径。In order to accurately and quantitatively calculate and assess the carbon dioxide emission during the construction phases of highway tunnels and ascertain the main sources of carbon emission and their influencing mechanisms,a standard calculation process,based on the life cycle assessment(LCA)method,is devised that covers the aspects including highway tunnel carbon emission calculation boundary,list analysis and calculation model creation.By using engineering examples and the life cycle assessment tool SimaPro,the carbon emission per linear meter of tunnels built under various surrounding rock conditions is calculated and analyzed.According to the re⁃sults,the carbon emission per linear meter of tunnel increases markedly in the material production stage and con⁃struction stage as the surrounding rock is degraded.In highway tunnel construction,the carbon emission in the mate⁃rial production stage takes the largest proportion,particularly the carbon emission in the secondary lining material production stage takes a high proportion.Therefore improvement of the material production technology and research into carbon emission reduction design of lining structure are the key approaches to reducing total carbon emission in highway tunnel construction.

关 键 词：公路隧道 碳排放 生命周期评价 计算模型 清单分析 

分 类 号：U459.2[建筑科学—桥梁与隧道工程]