摘要
深水区特大桥梁防护工程复杂,工程施工周期长,其全寿命碳排放特征对于控碳减碳至关重要。本文采用LCA分析方法,对肇明高速西江特大桥进行了分析。结果发现材料的碳排放在桥梁建设总碳排放中占比最大,为95.7%,分项工艺中的碳排放热点为集中加工悬浇箱梁焊接钢筋,材料的碳排放热点为HRB400钢筋,机械的碳排放热点为Φ2500 mm以内回旋钻机。施工方可以通过优化设计方案,使用低碳排放材料和清洁能源等方式减少桥梁建设阶段在分项工艺、材料和机械方面的碳排放,其中材料的碳排放应该作为施工方的减排重点。
The protection works of extra-large Bridges in deep water are complicated and the construction period is long.The carbon emission characteristics of the Bridges in the whole life are very important for carbon control and carbon reduction.In this paper,LCA analysis method is used to analyze Xijiang bridge of Zhaoming Expressway.The results show that the carbon emission of materials accounts for the largest proportion of the total carbon emission of bridge construction,accounting for 95.7%.The carbon emission hotspot of the subprocess is concentrated processing of welded steel bars of hanging cast box girders,the carbon emission hotspot of materials is HRB400 steel bars,and the carbon emission hotspot of machinery is gyrodrill within 2500 mm.The construction party can reduce the carbon emission of sub-process,material and machinery during the bridge construction stage by optimizing the design scheme and using low-carbon emission materials and clean energy,among which the carbon emission of materials should be the focus of the construction party.
作者
何江陵
陈勇强
董欣
黄飞扬
刘备
王元庆
HE Jiangling;CHEN Yongqiang;DONG Xin;HUANG Feiyang;LIU Bei;WANG Yuanqing(Guangdong Expressway Co.,Ltd,Guangzhou Guangdong 510623,China;Guangdong Gezhouba Zhaoming Expressway Co.,Ltd,Zhaoqing Guangdong 526070,China;College of Transportation Engineering of Chang'an University,Xi’an Shaanxi 710061,China)
出处
《交通节能与环保》
2022年第6期25-30,37,共7页
Transport Energy Conservation & Environmental Protection
基金
国家自然科学基金项目(51878062)
国家自然科学基金青年科学基金项目(52102390)
肇明高速绿色建造评估系统建立与应用研究(ZMGS-HT-2021-29)。
关键词
交通碳排放
施工建设碳排放
生命周期评价
桥梁工程
特大桥梁
carbon emissions of transportation
carbon emissions of construction
life cycle assessment
bridge engineering
extra large bridge
