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Integrated life cycle cost method for sustainable structural design by focusing on a benchmark office building in Australia

机译：以澳大利亚基准办公楼为重点的用于可持续结构设计的综合生命周期成本方法

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Cost has been traditionally known as a key factor that needs to be considered in the decision making process. Recent awareness in environmental problems has highlighted the need for considering environmental impacts into the process of making choices. However, far too little attention has been paid to reflect the environmental impact and the building cost into the decision making process. As such, this study proposed a method that integrates and considers the environmental cost and building cost in the structural design process. This method takes into account the cost associated with building materials, construction methods and amount of embodied carbon emission during the life cycle of buildings. The current study analysed the effects of two construction systems (Flat slab and waffle slab) and two structural materials (Normal concrete and Ultra-lightweight concrete) on overall costs of a typical high rise concrete structure (15-story office building) in Australia (NS11401.1 2014). The results show that the office building designed with lightweight construction method (waffle slab) and normal concrete (Normal weight) has a lower life cycle cost (50 year lifespan) in comparison with the other design alternatives. It was found that an appropriate selecting of construction forms and type of concrete can save up to 7% of the cost of material consumption, 5% of the total energy consumption expense, and 5% of the CO2-e emissions of the building across all five major cities. This study demonstrates a method to quantify the potential impact of Ultra-lightweight concrete has on the life cycle cost and carbon emissions of commercial buildings. The proposed methodology to assess life cycle cost and environmental impact can be used as a supporting tool in selection of efficient construction methods and structural materials over the lifetime of building. (C) 2018 Elsevier B.V. All rights reserved.
机译：传统上，成本一直是决策过程中需要考虑的关键因素。最近对环境问题的认识突出表明，在做出选择的过程中需要考虑环境影响。但是，很少有人关注决策过程中的环境影响和建筑成本。因此，本研究提出了一种在结构设计过程中综合考虑环境成本和建筑成本的方法。该方法考虑了与建筑材料，建筑方法相关的成本以及建筑物生命周期内所体现的碳排放量。当前的研究分析了两种建筑系统（平板和华夫饼平板）和两种结构材料（普通混凝土和超轻混凝土）对澳大利亚典型的高层混凝土结构（15层办公楼）的整体成本的影响（ NS11401.1 2014）。结果表明，与其他设计方案相比，采用轻型建筑方法（华夫格平板）和普通混凝土（普通重量）设计的办公楼具有较低的生命周期成本（50年寿命）。研究发现，适当选择建筑形式和类型的混凝土可以节省多达7％的材料消耗成本，5％的总能源消耗费用以及5％的建筑物二氧化碳排放量。五大城市。这项研究表明了一种量化超轻混凝土对商业建筑生命周期成本和碳排放量的潜在影响的方法。评估生命周期成本和环境影响的拟议方法可以用作在建筑寿命期内选择有效的施工方法和结构材料的辅助工具。 （C）2018 Elsevier B.V.保留所有权利。

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