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Reducing carbon dioxide emissions through structural health monitoring of bridges
Journal of Civil Structural Health Monitoring ( IF 3.6 ) Pub Date : 2021-03-02 , DOI: 10.1007/s13349-021-00474-z
Farnaz Raeisi , Basheer Algohi , Aftab Mufti , Douglas J. Thomson

Reducing greenhouse gas emissions including carbon dioxide (CO2) is central to minimizing the human contribution to global warming. Industrial activities and transportation are some of the main contributors to carbon dioxide emission. Bridges are the key element in the transportation system and many of them are reaching the end of their designed service life. Replacing bridges requires a significant amount of construction materials and equipment, which will lead to significant carbon dioxide emissions. In this work, we conclude that carbon dioxide emission can be reduced by applying structural health monitoring (SHM) instrumentation and techniques to bridge management. In this work, two medium span steel girder bridges have been used to study the impact of the application of SHM on the emitted carbon dioxide. From two monitored bridges traffic load strains were used to monitor the load distribution factor and neutral axis position of each girder. This data can be used to extend the service life of these bridges. By extending the service life of a bridge, the average annual carbon dioxide emission associated with the bridge is reduced. Considering the emission due to material production and construction, the carbon dioxide emission due to bridge reconstruction will decrease by 9–17% under the assumption that the application of SHM will extend the service life of a bridge by 5–10 years. Data from Federal Highway Administration (FHWA) for the state of Iowa, which includes the number of structurally deficient bridges, was used to estimate the short-term and long-term cumulative CO2 emission for a fleet of bridges. It was concluded that if all structurally deficient bridges (rating 3 or less) in Iowa were replaced for the 2000–2019 time period, the cumulative CO2 emission would have been 4,38,483 tonnes. However, if SHM were to be applied and extended the service life of 80% of these bridges by 5 or 10 years the total emission would have been reduced to 2,84,048 tonnes or 1,75,695 tonnes.



中文翻译:

通过桥梁的结构健康监测减少二氧化碳排放

减少包括二氧化碳(CO 2)在内的温室气体排放)对于最大限度地减少人类对全球变暖的贡献至关重要。工业活动和运输是造成二氧化碳排放的主要因素。桥梁是运输系统中的关键要素,其中许多已达到其设计使用寿命的终点。更换桥梁需要大量的建筑材料和设备,这将导致大量的二氧化碳排放。在这项工作中,我们得出结论,可以通过将结构健康监测(SHM)仪器和技术应用于桥梁管理来减少二氧化碳的排放。在这项工作中,使用了两个中跨钢梁桥来研究SHM的应用对排放的二氧化碳的影响。从两个被监视的桥梁中,交通荷载应变被用来监视每个梁的荷载分布系数和中性轴位置。该数据可用于延长这些网桥的使用寿命。通过延长桥梁的使用寿命,减少了与桥梁相关的平均年二氧化碳排放量。考虑到由于材料生产和建造而产生的排放,假设SHM的应用将使桥梁的使用寿命延长5-10年,则由于桥梁改造而产生的二氧化碳排放量将减少9-17%。来自爱荷华州联邦公路管理局(FHWA)的数据,包括结构缺陷桥梁的数量,用于估算短期和长期累积CO 该数据可用于延长这些网桥的使用寿命。通过延长桥梁的使用寿命,减少了与桥梁相关的平均年二氧化碳排放量。考虑到由于材料生产和建造而产生的排放,假设SHM的应用将使桥梁的使用寿命延长5-10年,则由于桥梁改造而产生的二氧化碳排放量将减少9-17%。来自爱荷华州联邦公路管理局(FHWA)的数据,包括结构缺陷桥梁的数量,用于估算短期和长期累积CO 该数据可用于延长这些网桥的使用寿命。通过延长桥梁的使用寿命,减少了与桥梁相关的平均年二氧化碳排放量。考虑到由于材料生产和建造而产生的排放,假设SHM的应用将使桥梁的使用寿命延长5-10年,则由于桥梁改造而产生的二氧化碳排放量将减少9-17%。来自爱荷华州联邦公路管理局(FHWA)的数据,包括结构缺陷桥梁的数量,用于估算短期和长期累积CO 考虑到由于材料生产和建造而产生的排放,假设SHM的应用将使桥梁的使用寿命延长5-10年,则由于桥梁改造而产生的二氧化碳排放量将减少9-17%。来自爱荷华州联邦公路管理局(FHWA)的数据,包括结构缺陷桥梁的数量,用于估算短期和长期累积CO 考虑到由于材料生产和建造而产生的排放,假设SHM的应用将使桥梁的使用寿命延长5-10年,则由于桥梁改造而产生的二氧化碳排放量将减少9-17%。来自爱荷华州联邦公路管理局(FHWA)的数据,包括结构缺陷桥梁的数量,用于估算短期和长期累积CO2舰队桥梁的排放量。结论是,如果在2000– 2019年期间更换爱荷华州所有结构缺陷的桥梁(3级或以下),则累计CO 2排放量将为4,38,483吨。但是,如果应用SHM,并将这些桥梁中80%的使用寿命延长5或10年,总排放量将减少到2,84,048吨或1,75,695吨。

更新日期:2021-03-02
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