廃棄物重量と LCCO_2量に着目した鉄骨造建物における環境負荷の評価

概要

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Long service life, reuse and recycling are counted as three major measures for reducing environmental burden. However, the effects of these measures are not clearly defined, therefore, quantitative evaluation and investigation are required. This study conducts case studies on scenarios presumed for the environmental burden reduction for mid-rise steel building structure. Service life period of buildings, reuse rate of members and recycling rate of materials are considered as parameters. The study pays attention not only to the life cycle CO_2 (LCCO_2) but also to the amount of wastes. Additionally, in seismic areas, if the service life of buildings is extended, risks of large earthquakes increase. Therefore, the case studies assume the seismic design loads corresponding to the service life and calculate the steel weight. Major conclusions obtained in this study are as follows : 1)The environmental burden is reduced by raising the reuse rate of members and recycling rate of materials on stretching service life of the building within about 100 years. 2)Environmental burden does be not evaluated by single measure for evaluation, and it is necessary to carry out the synthetic judgment by multiple measure for evaluation.
社団法人日本建築学会の論文
2002-04-30