A probabilistic strategy for seismic assessment and FRP retrofitting of existing bridges

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• 作者：R. Morbin ; M. A. Zanini ; C. Pellegrino ; H. Zhang…
• 关键词：Bridge management ; Decision making ; FRP ; Probabilistic framework ; Seismic assessment
• 刊名：Bulletin of Earthquake Engineering
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：13
• 期：8
• 页码：2411-2428
• 全文大小：1,626 KB
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• 作者单位：R. Morbin (1)
  M. A. Zanini (1)
  C. Pellegrino (1)
  H. Zhang (2)
  C. Modena (1)
  
  1. Department of Civil, Environmental and Architectural Engineering, University of Padova, Via Marzolo 9, 35131, Padua, Italy
  2. School of Civil Engineering, Faculty of Engineering and Information Technologies, The University of Sydney, Sydney, NSW, Australia
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geotechnical Engineering
  Civil Engineering
  Geophysics and Geodesy
  Hydrogeology
  Structural Geology
  
• 出版者：Springer Netherlands
• ISSN：1573-1456

文摘

This study proposes a holistic probabilistic framework to evaluate existing road and railway bridges after an earthquake by means of analytical fragility curves and visual inspections. Although visual inspections are affected by uncertainties, they are usually considered in a deterministic way, while in this work they are taken into account in a probabilistic point manner. Moreover, extra focus is given on retrofitting interventions by means of Fiber Reinforced Polymer materials and their costs. A probabilistic methodology is formed to evaluate possible standardized interventions on existing bridges after a seismic event. The proposed framework, consists of six basic steps and it is applied on a reinforced concrete bridge case study, which is a common structural typology in Italian roadway infrastructural networks. The main aim is to provide useful information to public authorities in order to decide whether or not they should allow traffic over the bridge and whether to repair immediately earthquake-damaged bridges. The outcomes of this framework can be used to improve procedures used for the seismic assessment of the whole road and railway networks to better plan emergency, post-emergency actions and define a general priority for an optimal budget allocation.