摘要
通过对建筑全寿命周期成本分析,得出运营维护与拆除回收等未来成本将大于初始建造成本的2倍;建造普通建筑能耗约为300kg/m^(2)标准煤;CO2排放量约为650kg/m^(2);而设计使用年限仅为50年,低于欧美标准。通过对建筑技术规范的解读,合理使用年限可达设计使用年限的1.4倍。通过价值分析,将普通建筑的设计使用年限从50年延长至合理使用年限70年,建筑的价值将增加30%,全国年经济效益在万亿元以上,节约能源标准煤约0.338亿t,减少CO2排放约0.914亿t。
Through the cost analysis of the whole life cycle of buildings,this paper concludes that the future cost of operation,maintenance,demolition and recovery will be more than 2 times of the initial construction cost.Construction of ordinary building energy consumption is about 300kg/m^(2) standard coal,CO2 emission is about 650kg/m^(2).The design service life is only 50 years,lower than the European and American standards.According to the interpretation of the building technical code,the reasonable service life can reach 1.4 times of the designed service life.Through value analysis,the design service life of ordinary buildings is extended from 50 years to the reasonable service life of 70 years,the value of buildings will increase by 30%,the national annual economic benefit will be more than one trillion yuan,the energy standard coal will be saved about 33.8 million tons,and the CO2 emission will be reduced about 91.4 million tons.
作者
杨石春
李祥军
YANG Shichun;LI Xiangjun(Guangdong Cheng’anxin Project Cost Consultancy Co.,Ltd,Shenzhen 518054,China;Shenzhen Branch,ZhongqinWanxin Accounting Firm,Shenzhen 518054,China)
出处
《工程经济》
2021年第2期67-72,共6页
ENGINEERING ECONOMY
关键词
既有建筑
全寿命成本
能耗与CO2排放
延长使用年限
价值分析
existing buildings
lifetime cost
energy consumption and CO2 emissions
extended service life
value analysis
作者简介
杨石春,男,生于1946年,浙江新昌县人,教授级高级工程师,研究方向:工程技术与工程管理。
