A novel method for quantifying the criticality and vulnerability of the components of railway bridges
Aflatooni, Mehran, Chan, Tommy H.T., & Thambiratnam, David P. (2013) A novel method for quantifying the criticality and vulnerability of the components of railway bridges. In World Congress on Railway Research 2013, Informa Australia , Sydney Convention and Exhibition Centre, Sydney, NSW.
Conditions of bridges deteriorate with age, due to different critical factors including, changes in loading, fatigue, environmental effects and natural events. In order to rate a network of bridges, based on their structural condition, the condition of the components of a bridge and their effects on behaviour of the bridge should be reliably estimated. In this paper, a new method for quantifying the criticality and vulnerability of the components of the railway bridges in a network will be introduced. The type of structural analyses for identifying the criticality of the components for carrying train loads will be determined. In addition to that, the analytical methods for identifying the vulnerability of the components to natural events whose probability of occurrence is important, such as, flood, wind, earthquake and collision will be determined. In order to maintain the practicality of this method to be applied to a network of thousands of railway bridges, the simplicity of structural analysis has been taken into account. Demand by capacity ratios of the components at both safety and serviceability condition states as well as weighting factors used in current bridge management systems (BMS) are taken into consideration. It will be explained what types of information related to the structural condition of a bridge is required to be obtained, recorded and analysed. The authors of this paper will use this method in a new rating system introduced previously. Enhancing accuracy and reliability of evaluating and predicting the vulnerability of railway bridges to environmental effects and natural events will be the significant achievement of this research.
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|Item Type:||Conference Paper|
|Keywords:||Rating Bridges, Flood, Collision, Earthquake, Wind, Criticality, Vulnerability, Environmental effects, Bridge management system|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Infrastructure Engineering and Asset Management (090505)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
|Divisions:||Current > Schools > School of Civil Engineering & Built Environment
Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
|Copyright Owner:||Copyright 2013 [please consult the author]|
|Deposited On:||02 Dec 2013 22:28|
|Last Modified:||19 May 2014 10:32|
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