This paper proposes the upscaling of conventional individual bridge health monitoring problems into urban regions and transportation networks via mobile and smart sensing techniques together with an innovative reconnaissance procedure. The paper associates structural failure probabilities with systemic features and proposes decision criteria to optimize postdisaster actions. Twenty bridges constituting transportation network infrastructure compose the testbed region and utilize smartphone accelerometers for dynamics characterization in a vibration-based framework. In this framework, reconnaissance output serves for model development, and mobile sensor data enable finite element model updating. Structural reliability analyses merged in a chain setting generate the systemic behavior of cascaded bridge performance. Combining systemic reliability with transportation and health services demand, one can optimize the response strategies of the bridge population and strategize disaster-related decisions in a postevent assessment setting. Based on a testbed region with remote access to nearby vicinities, 18 earthquake scenarios are conducted to visualize the optimal evacuation strategies on the network, taking systemic bridge performance into consideration. Cost-free mobile sensing support adds one more fundamental information source for reducing the uncertainty of the models and, therefore, improves associated mitigation actions.

中文翻译：

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用于事后运输决策的基于移动传感的模型更新的桥梁网络的系统可靠性

本文提出通过移动和智能传感技术以及创新的侦察程序，将传统的单个桥梁健康监测问题升级到城市地区和交通网络。本文将结构失效概率与系统特征联系起来，并提出了优化灾后行动的决策标准。构成交通网络基础设施的 20 座桥梁构成了试验台区域，并利用智能手机加速度计在基于振动的框架中进行动力学表征。在此框架中，侦察输出服务于模型开发，移动传感器数据支持有限元模型更新。合并在链设置中的结构可靠性分析生成级联桥梁性能的系统行为。将系统可靠性与交通和卫生服务需求相结合，可以优化桥梁人口的响应策略，并在事后评估环境中制定与灾害相关的决策。基于可远程访问附近地区的试验台区域，进行了 18 种地震情景，以可视化网络上的最佳疏散策略，同时考虑系统桥梁性能。免费的移动传感支持为减少模型的不确定性增加了一个基本信息源，因此改进了相关的缓解措施。基于可远程访问附近地区的试验台区域，进行了 18 种地震情景，以可视化网络上的最佳疏散策略，同时考虑系统桥梁性能。免费的移动传感支持为减少模型的不确定性增加了一个基本信息源，因此改进了相关的缓解措施。基于可远程访问附近地区的试验台区域，进行了 18 种地震情景，以可视化网络上的最佳疏散策略，同时考虑系统桥梁性能。免费的移动传感支持为减少模型的不确定性增加了一个基本信息源，因此改进了相关的缓解措施。