Study on the resource-environmental pressure caused by solid waste discharge from civil building life-cycle: A case study of Shenyang Library

摘要

It is a common social task to reduce the resource-environmental pressure caused by solid waste discharge from civil building life-cycle and to promote the economic development onto track of resource reduction and environmental decompression.By methods of ecological footprint and emergy analysis and taking Shenyang Library as example,resource-environmental pressure calculating model for solid waste discharge from each period of life-cycle is built for case analysis The result shows that resource-environmental pressure caused by waste cement discharge accounts for 48.56％ of ecological footprint in constructing period,82.78％ in use and maintenance period and 56.73％ in dismantled and discarded building material disposal period; while resource-environmental pressure caused by waste readymixed concrete discharge accounts for 31.90％ of ecological footprint in constructing period and 37.26％ in dismantled and discarded building material disposal period.In periods of life-cycle,resource-occupied footprint of solid waste discharge in dismantled and discarded building material disposal period accounts for the largest proportion with 92.91％ of the whole and in use and maintenance period for the smallest proportion with 1.06％.Thus the emphasis of cutting down the solid waste discharge amount in periods of life-cycle of civil building is to reduce the application amount of cement and ready-mixed concrete,and to develop more civil buildings with steel structure which is substitutable for concrete structure or with combined structure.