Input, stocks and output flows of urban residential building system in Beijing city, China from 1949 to 2008

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Input, stocks and output flows of urban residential building system in Beijing city, China from 1949 to 2008
	Cao, Aixin
刊名	RESOURCES CONSERVATION AND RECYCLING
	2010-10
卷号	54 期号:12 页码:1177-1188
关键词	Urban residential buildings Flows of construction materials Construction wastes Temporal changes Beijing city
中文摘要	Urban residential buildings are formed, maintained and reformed by different external material and energy flows, and their behaviors of input, accumulation and output are characterized by their architectural factors and modes of use that usually determine the consumption of material and energy of a building at its overall life cycle. In this research, we took Beijing city, a rapid developing city as a case study, and examined material flows of urban residential building system based on a survey of typical residential buildings in the urban areas of Beijing city. The quantitative analysis were made to describe the input, transformation/accumulation, and output of building materials from the year 1949 to 2008, and a comparative analysis was done to identify the differences of material uses among the buildings with different architectural structures as masonry-concrete, and steel-concrete. During the period from 1949 to 2008, there were six main materials of cement, sand, gravel, steel, bricks and timber used in urban residential building system in Beijing. The total amount of material imported into the system was 5.1 x 10(8) t, among which the accumulated amount was 4.7 x 10(8) t, an accumulation rate of 92.5%, and the total of building wastes reached 3.9 x 10(7) t. Among the buildings with two architectural structures, the total amount of material use for buildings with steel-concrete structure was larger than masonry-concrete. It was found that the buildings with steel-concrete structure experienced a rapid increase since the year 1979 in Beijing. As a result of rapid urban development, the large-scale reformation and demolishment of urban old buildings also led to a rapid growth of the amount of building wastes. And the building wastes generated in the process of reformation and demolition began to exceed that produced in the process of new buildings construction. The amount of building wastes generated from 2004 to 2008 accounted for 52.2% of the total that generated from 1949 to 2008. From this research, the rapid development of Beijing's residential building system in the past 60 years became a big ecological pressure for urban sustainable building development. It is important to change the traditional model of urban construction, and develop some sustainable or ecologically friendly construction technologies to enhance the capacity of recycling and reuse of residential building wastes for realizing a sustainable urban building construction and management in Beijing. (C) 2010 Elsevier B.V. All rights reserved.
WOS记录号	WOS:000281752400018
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/20990]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Cao, Aixin. Input, stocks and output flows of urban residential building system in Beijing city, China from 1949 to 2008[J]. RESOURCES CONSERVATION AND RECYCLING,2010,54(12):1177-1188.
APA	Cao, Aixin.(2010).Input, stocks and output flows of urban residential building system in Beijing city, China from 1949 to 2008.RESOURCES CONSERVATION AND RECYCLING,54(12),1177-1188.
MLA	Cao, Aixin."Input, stocks and output flows of urban residential building system in Beijing city, China from 1949 to 2008".RESOURCES CONSERVATION AND RECYCLING 54.12(2010):1177-1188.