This paper presents a web-based and design-oriented structural health evaluation system (SHES) for long-span bridges equipped with long-term structural health monitoring system (SHMS). The key parameters of a long-span bridge, used in its limit state design, are recollected. The key design parameters cover not only bridge acceleration, displacement, internal force and stress but also wind loading, temperature loading, traffic loading, earthquake excitation, and corrosion. Data analysis methods are applied to the measurement data recorded by SHMS installed in the bridge to obtain its measured/predicted key parameters. Because most design parameters are reliability-based, data analysis methods therefore include not only statistical analysis, fatigue analysis, corrosion analysis but also extreme value analysis. The design key parameters and the measured/predicted key parameters are then used to evaluate the health status of the bridge in terms of loading, serviceability, safety, and durability. The three statuses of structural health monitoring, that is, normal monitoring, critical monitoring, and inspection initialization, are correspondingly defined as a reference for maintenance and management decision. All of the above are implemented with a series of web-based software. The feasibility and advantage of the proposed SHES are finally demonstrated through a case study using a real long-span butterfly arch bridge.

中文翻译：

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带有结构健康监测系统的大跨度桥梁结构健康评估系统

本文提出了一种基于网络和面向设计的结构健康评估系统 (SHES)，用于配备长期结构健康监测系统 (SHMS) 的大跨度桥梁。回顾了用于极限状态设计的大跨度桥梁的关键参数。关键设计参数不仅包括桥梁加速度、位移、内力和应力，还包括风荷载、温度荷载、交通荷载、地震激发和腐蚀。将数据分析方法应用于安装在桥梁中的 SHMS 记录的测量数据，以获得其测量/预测的关键参数。由于大多数设计参数都是基于可靠性的，因此数据分析方法不仅包括统计分析、疲劳分析、腐蚀分析，还包括极值分析。然后使用设计关键参数和测量/预测的关键参数来评估桥梁在负载、可使用性、安全性和耐久性方面的健康状况。结构健康监测的三种状态，即正常监测、关键监测和检查初始化，被相应地定义为维护和管理决策的参考。以上所有都是通过一系列基于网络的软件实现的。最终通过使用真正的大跨度蝴蝶拱桥的案例研究证明了所提出的 SHES 的可行性和优势。关键监控和检查初始化，被相应地定义为维护和管理决策的参考。以上所有都是通过一系列基于网络的软件实现的。最终通过使用真正的大跨度蝴蝶拱桥的案例研究证明了所提出的 SHES 的可行性和优势。关键监控和检查初始化，被相应地定义为维护和管理决策的参考。以上所有都是通过一系列基于网络的软件实现的。最终通过使用真正的大跨度蝴蝶拱桥的案例研究证明了所提出的 SHES 的可行性和优势。