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Establishment and Application of the Wind and Structural Health Monitoring System for the Runyang Yangtze River Bridge

机译：润扬长江大桥风结构健康监测系统的建立与应用

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摘要

Structural health monitoring can provide a practical platform for detecting the evolution of structural damage or performance deterioration of engineering structures. The final objective is to provide reasonable suggestions for structural maintenance and management and therefore ensure the structural safety according to the real-time recorded data. In this paper, the establishment of the wind and structural health monitoring system (WSHMS) implemented on the Runyang Yangtze River Bridge (RYRB) in China is introduced. The composition and functions of the WSHMS are presented. Thereinto, the sensory subsystem utilized to measure the input actions and structural output responses is introduced. And the core functions of the data management and analysis subsystem (DMAS) including model updating, structural condition identification, and structural condition assessment are illustrated in detail. A three-stage strategy is applied into the FE model updating of RYRB, and a two-phase strategy is proposed to adapt to structural health diagnosis and damage identification. Considering the structural integral security and the fatigue characteristic of steel material, the condition assessment of RYRB is divided into structural reliability assessment and structural fatigue assessment, which are equipped with specific and elaborate module for effective operation. This research can provide references for the establishment of the similar structural health monitoring systems on other cable-supported bridges.
机译：结构健康监测可以提供一个实用的平台，用于检测结构损坏的演变或工程结构的性能下降。最终目的是为结构维护和管理提供合理的建议，从而根据实时记录的数据确保结构安全。本文介绍了在中国润扬长江大桥（RYRB）上实施的风和结构健康监测系统（WSHMS）的建立。介绍了WSHMS的组成和功能。其中，引入了用于测量输入动作和结构输出响应的感觉子系统。并详细说明了数据管理和分析子系统（DMAS）的核心功能，包括模型更新，结构状态识别和结构状态评估。将三阶段策略应用于RYRB的有限元模型更新，并提出了一种两阶段策略以适应结构健康诊断和损伤识别。考虑到结构的整体安全性和钢材的疲劳特性，RYRB的状态评估分为结构可靠性评估和结构疲劳评估，它们配备了专门且精心设计的有效运行模块。该研究可为在其他电缆支撑的桥梁上建立类似的结构健康监测系统提供参考。

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