Abstract Sustainable design of structures includes environmental and economic aspects; social aspects throughout the life cycle of the structure, however, are not always adequately assessed. This study evaluates the social contribution of a concrete bridge deck. The social performance of the different design alternatives is estimated taking into account the impacts derived from both the construction and the maintenance phases of the infrastructure under conditions of uncertainty. Uncertain inputs related to social context are treated through Beta-PERT distributions. Maintenance needs for the different materials are estimated by means of a reliability based durability evaluation. Results show that social impacts resulting from the service life of bridges are not to be neglected in sustainability assessments of such structures. Designs that minimize maintenance operations throughout the service life, such as using stainless steel rebars or silica fume containing concretes, are socially preferable to conventional designs. The results can complement economic and environmental sustainability assessments of bridge structures.

中文翻译：

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暴露于侵蚀性环境的混凝土桥面板的社会生命周期评估

摘要 结构的可持续设计包括环境和经济方面；然而，在结构的整个生命周期中，社会方面并不总是得到充分评估。本研究评估了混凝土桥面板的社会贡献。考虑到在不确定条件下基础设施的建设和维护阶段产生的影响，估计不同设计方案的社会绩效。与社会背景相关的不确定输入通过 Beta-PERT 分布进行处理。不同材料的维护需求是通过基于可靠性的耐久性评估来估计的。结果表明，在对此类结构的可持续性评估中，不应忽视桥梁使用寿命产生的社会影响。在整个使用寿命期间尽量减少维护操作的设计，例如使用不锈钢钢筋或含硅粉的混凝土，在社会上比传统设计更受欢迎。结果可以补充桥梁结构的经济和环境可持续性评估。