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首页> 外文期刊>Journal of Infrastructure Systems >Integrated Life-Cycle Assessment and Life-Cycle Cost Analysis Model for Concrete Bridge Deck Applications
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Integrated Life-Cycle Assessment and Life-Cycle Cost Analysis Model for Concrete Bridge Deck Applications

机译：混凝土桥面应用的综合生命周期评估和生命周期成本分析模型

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摘要

An integrated life-cycle assessment and life-cycle cost analysis model was developed and applied to enhance the sustainability of concrete bridge infrastructure. The objective of this model is to compare alternative bridge deck designs from a sustainability perspective that accounts for total life-cycle costs including agency, user, and environmental costs. A conventional concrete bridge deck and an alternative engineered cementitious composite link slab design are examined. Despite higher initial costs and greater material-related environmental impacts on a per mass basis, the link slab design results in lower life-cycle costs and reduced environmental impacts when evaluated over the entire life cycle. Traffic delay caused by construction comprises 91% of total costs for both designs. Costs to the funding agency comprise less than 3% of total costs, and environmental costs are less than 0.5%. These results show life-cycle modeling is an important decision-making tool since initial costs and agency costs are not illustrative of total life-cycle costs. Additionally, accounting for construction-related traffic delay is vital to assessing the total economic cost and environmental impact of infrastructure design decisions.
机译：开发了集成的生命周期评估和生命周期成本分析模型，并将其应用于增强混凝土桥梁基础设施的可持续性。该模型的目的是从可持续性的角度比较替代桥面设计，该设计考虑了包括代理，用户和环境成本在内的总生命周期成本。研究了常规混凝土桥面板和替代工程胶结复合材料连接板的设计。尽管按质量计算，初始成本较高且与材料相关的环境影响更大，但在整个生命周期中进行评估时，链板设计可降低生命周期成本并减少对环境的影响。两种设计均因施工造成的交通延误占总成本的91％。资助机构的成本不到总成本的3％，环境成本不到0.5％。这些结果表明，生命周期建模是重要的决策工具，因为初始成本和代理成本不能说明总生命周期成本。此外，考虑与建筑相关的交通延误对于评估基础设施设计决策的总经济成本和环境影响至关重要。

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