期刊
ENERGY AND BUILDINGS
卷 174, 期 -, 页码 44-53出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2018.06.013
关键词
Carbon dioxide emission; Cost; Embodied energy; Optimization; Reinforced concrete column; Sustainable design
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT Future Planning [NRF-2017R1A1A1A05001196]
This study presents a sustainable design method that optimizes the embodied energy and carbon dioxide (CO2) emissions of a reinforced concrete (RC) column. Conventionally, the design of RC structures has been focused on the minimization of construction costs while satisfying the structural design code. Recently, however, sustainability aspect in structural design has drawn big attention to structural engineers, especially for structure life cycle assessment. Therefore, it is crucial to understand the relationship between construction costs and consumption of energy including CO2 emissions, in the design process of RC structures. In the sustainable design process, the objective functions for the cost, embodied energy, and CO2 emissions were set and numerous optimization analyses for various loading conditions were conducted as the failure mode of RC columns varies according to the eccentricity involving the axial forces and moment. A thorough investigation of the optimization analysis results shows that, when a 10% cost increase is assumed, the embodied energy and CO2 emissions might undergo an overall reduction of up to 22% and 63%, respectively. As a result, the proposed design method enables the embodied energy and CO2 emissions to be effectively optimized in the conventional design process of RC columns. (C) 2018 Elsevier B.V. All rights reserved.
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