摘要
轻钢建筑以其生产过程清洁、材料可回收等优势成为建筑产业节能减排的重要切入点,但该看法仅是对单一阶段减排效应的定性认知,关于其全生命周期的节碳成效及节碳成本尚无定量论证。采用LCA-LCC方法,利用eFootprint工具对轻钢住宅及钢筋混凝土住宅的碳足迹进行精确测算,评估轻钢建筑的节碳成效,并在此基础上依据技术经济原理对比二者的成本及减排效果。结果显示轻钢住宅相比传统钢筋混凝土住宅可实现全生命周期23%的碳减排,材料可回收利用的特性对碳减排率贡献最大;实现1kg二氧化碳当量的减排仅需多支出0.35元,其中产品阶段的节碳成本最高,建设阶段最低。
Light-steel building,due to its advantages of process cleanness and material recyclability,has become an important starting point for energy conservation and emission reduction in the construction industry.However,this view is only a qualitative recognition of single-stage,as to the entire life cycle,there is no quantitative demonstration of carbon-saving performance and emission reduction cost yet.In this paper,the LCA-LCC method and eFootprint tool are used to accurately measure the carbon footprint of light-steel buildings and reinforced concrete buildings,in order to evaluate the carbon-saving effect of light-steel structures.A comparison of cost and carbon reduction benefit is performed according to the principle of techno-economy.The results show that light-steel buildings can achieve a 23%carbon reduction rate over the whole life cycle as compared to conventional reinforced concrete buildings,and the characteristic of material recyclability contributes most to the emission reduction.Achieving CO2-saving of 1 kg equivalent requires only an additional expenditure of 0.35 yuan,of which the cost in the production phase is the highest while the construction phase is the lowest.
作者
郑晓云
张爱阳
席冰冰
ZHENG Xiaoyun;ZHANG Aiyang;XI Bingbing(School of Management Science and Real Estate,Chongqing University,Chongqing 400045,China)
出处
《建筑钢结构进展》
CSCD
北大核心
2020年第1期126-132,共7页
Progress in Steel Building Structures
关键词
轻钢住宅
LCA-LCC
碳足迹
节碳成效
节碳成本
light-steel residential building
LCA-LCC
carbon footprint
carbon-saving effect
carbon-saving cost
