Qing Zhang Qing, Li Na Zhang
Department of Jianghe, Architecture College University, Northeastern University, Shenyang, 110819, China.
Sci Rep. 2024 Jul 13;14(1):16199. doi: 10.1038/s41598-024-66769-5.
Sustainable multi-story building designs are gaining increasing attention in light of the green development of the building industry. Recently, many studies have been conducted to determine the optimized embodied energy considering size of structural members and materials strength using a single objective function. In this context, the current study adopted a multi-objective function based on cost and Embodied Energy (EE) for the sustainable design of the entire multi-story building. A BuildingEnergy computer program is used to assess the energy consumption performance of a multi-story reinforcement cement concrete building. Based on the proposed method, an analysis is carried out to compare the optimal solutions for multi-story building. Furthermore, a detailed parametric study was conducted to explore the main factors for energy-efficient column and beam design. The results revealed that with a comparison of the most "carbon-friendly" and "cost-friendly" solutions, an added cost of 6-7% can contribute up to a 13% emission reduction. The sectional dimensions, steel rebar, concrete strengths, cost ratio, building height, and eccentricity remarkably influence sustainable design, cost optimization, and minimum carbon emission. Overall, this study could help to define cost-effective and energy-efficient structural members. Eventually, the EE is confirmed to be a feasible parameter for designing more sustainable multi-story RCC buildings.
鉴于建筑行业的绿色发展，可持续多层建筑设计正受到越来越多的关注。最近，已经进行了许多研究，以使用单一目标函数来确定考虑结构构件尺寸和材料强度的优化内含能量。在此背景下，本研究采用了基于成本和内含能量（EE）的多目标函数，用于整个多层建筑的可持续设计。使用BuildingEnergy计算机程序来评估多层钢筋混凝土建筑的能源消耗性能。基于所提出的方法，进行了分析以比较多层建筑的最优解决方案。此外，还进行了详细的参数研究，以探索节能柱和梁设计的主要因素。结果表明，与最“碳友好”和“成本友好”的解决方案相比，增加6-7%的成本可使排放量最多减少13%。截面尺寸、钢筋、混凝土强度、成本比、建筑高度和偏心距对可持续设计、成本优化和最低碳排放有显著影响。总体而言，本研究有助于确定具有成本效益和节能的结构构件。最终，内含能量被确认为设计更可持续的多层钢筋混凝土建筑的可行参数。
