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DATA DRIVEN PREDICTIVE ANALYTICS FOR BRIDGE ASSET MANAGEMENT

机译:桥梁资产管理的数据驱动预测分析

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Data Driven Predictive Analytics for Bridge Asset Management is normally used for suitable repair and or rehabilitation plan of a typical bridge system based on the development of degradation model. Bridges would be showing signs of distress due to aging, improper repair, rehabilitation, or lack of proper maintenance. There is a wide research gap in bridge asset management particularly in the field of proper structural evaluation of bridges. Extending the useful service life of aging bridges is very important for the transportation industry. One of the problems faced by the US transportation industry is the degradation of structural components of highway bridges (normal deterioration and natural disasters like Hurricane Sandy etc.). The main reason behind these problems is the over usage of highway bridges beyond their useful service life in association with improper bridge asset management. The structural evaluation of the bridges is mostly done visually which varies in interpretation based on the judgement of the inspector (structure evaluator). In degradation model analysis, failure can be directly related to a change over time in a measurable structural parameter. This opens up the possibility of measuring degradation over time and using those data to extrapolate when failure will occur. This approach would allow us to fit acceleration models and life distribution models without actually waiting for failures to occur. In this analysis, various structural parameters, which drift monotonically (upwards, or downwards), can be measured over time towards a specified critical value corresponding to their failure stage. The aim is to fit models using degradation data instead of failures. The degradation model will be multidimensional, incorporating infrastructure element type, exposure, and time.
机译:用于数据桥资产管理的数据驱动预测分析通常用于基于退化模型开发的典型桥梁系统的适当维修和/或修复计划。桥梁会因老化,维修不当,修复或缺乏适当的维护而显示出困扰的迹象。在桥梁资产管理方面,特别是在对桥梁进行适当的结构评估方面,存在很大的研究空白。延长老化桥梁的使用寿命对于运输行业而言非常重要。美国运输业面临的问题之一是公路桥梁的结构部件退化(正常退化和自然灾害,如飓风桑迪等)。这些问题背后的主要原因是公路桥梁过度使用,超出了其使用寿命,再加上桥梁资产管理不当。桥梁的结构评估大部分是在视觉上进行的,根据检查员(结构评估员)的判断,其解释会有所不同。在退化模型分析中,失效可以与可测量的结构参数随时间的变化直接相关。这提供了测量随时间推移的退化并在发生故障时使用这些数据进行推断的可能性。这种方法将使我们能够拟合加速模型和寿命分布模型,而无需实际等待故障发生。在此分析中,可以随时间测量朝着对应于其失效阶段的指定临界值单调(向上或向下)漂移的各种结构参数。目的是使用降级数据而不是故障来拟合模型。降级模型将是多维的,并包含基础结构元素类型,暴露和时间。

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