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Simplified Environmental Study On Innovative Bridge Structure

机译：创新桥梁结构的简化环境研究

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The aim of this paper is to present a simplified life cycle assessment on an innovative bridge structure, made of wood and ultra high performance concrete, which combines mechanical performance with minimum environmental impact. The environmental analysis was conducted from cradle to grave using the Life Cycle Assessment method. It was restricted to energy release and greenhouse gas emissions. Assumptions are detailed for each step of the analysis. For the wood end-of-life, three scenarios were proposed: dumping, burning, and recycling. Results show that the most energy needed is in the production phase, which represents 73.4% of the total amount. Analysis shows that the renewable energy is about 70% of the production energy. Wood, through its biomass CO_2, contributes positively to the environmental impact. It was concluded that no scenario can be the winner on both impacts. Indeed, the end-of-life wood recycling gives the best impact on CO_2 release, whereas burning wood, despite its remarkable energy impact, is the worst. According to the emphasis given to each impact, designers will be able to choose one or the other.
机译：本文的目的是对由木材和超高性能混凝土制成的创新桥梁结构进行简化的生命周期评估，该结构将机械性能与对环境的影响最小化。使用生命周期评估方法，从摇篮到坟墓进行了环境分析。它仅限于能量释放和温室气体排放。分析的每个步骤的假设都已详细列出。对于木材的报废，提出了三种方案：倾倒，燃烧和回收。结果表明，最需要的能量是在生产阶段，占总量的73.4％。分析表明，可再生能源约占生产能源的70％。木材通过其生物量CO_2对环境影响做出了积极贡献。得出的结论是，没有任何一个方案可以同时赢得这两种影响。确实，报废的木材回收对CO_2的释放影响最大，而燃烧木材尽管对能源的影响显着，但最糟糕。根据对每种影响的强调，设计人员将可以选择其中一种。

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