Structural behavior of a cable stayed bridge through the use of a long-term health monitoring system

2010 ◽  
Author(s):  
Yinghong Cao ◽  
Ming Wang
Keyword(s):  
Monitoring System ◽  
Health Monitoring ◽  
Structural Behavior ◽  
Health Monitoring System ◽  
Cable Stayed Bridge

scholarly journals Structural Health Monitoring System Based on FBG Sensing Technique for Chinese Ancient Timber Buildings

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 110 ◽  
Author(s):  
Shao-Fei Jiang ◽  
Ze-Hui Qiao ◽  
Ni-Lei Li ◽  
Jian-Bin Luo ◽  
Sheng Shen ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Monitoring System ◽  
Health Monitoring ◽  
Structural Deformation ◽  
Beam Deflection ◽  
Health State ◽  
Health Monitoring System ◽  
Structural Health ◽  
Structural Health Monitoring System

Due to the long-term service, Chinese ancient timber buildings show varying degrees of wear. Thus, structural health monitoring (SHM) for these cultural and historical treasures is desperately needed to evaluate the service status. Although there are some FBG sensing-based SHM systems, they are not suitable for Chinese ancient timber buildings due to the differences in architectural types, structural loads, materials, and environment. Besides, a technical gap in Fiber Bragg grating (FBG) sensing-based column inclination monitoring exists. To overcome these weaknesses, this paper develops an FBG sensing-based structural health monitoring system for Chinese ancient Chuan-dou-type timber buildings that aims at monitoring structural deformation, i.e., beam deflection and column inclination, temperature, humidity, and fire around the building. An in-situ test and simulation analyses were conducted to verify the effectiveness of the developed SHM system. To validate the long-term-operation of the developed SHM system, monitoring data within 15 months were analyzed. The results show good agreement between the developed SHM system in this paper and other methods. In addition, the SHM system operated well in the first year after its deployment. This implies that the developed SHM system is applicable and effective in the health state monitoring of Chinese ancient Chuan-dou-type timber buildings, laying a foundation for damage prognosis of such types of timber buildings.

Health monitoring system for Dafosi cable-stayed bridge

2003 ◽  
Author(s):  
Yong Zhu ◽  
Yumei Fu ◽  
Weimin Chen ◽  
Shanglian Huang ◽  
Kim D. Bennett
Keyword(s):  
Monitoring System ◽  
Health Monitoring ◽  
Health Monitoring System ◽  
Cable Stayed Bridge

Probabilistic corrosion fatigue life assessment of a suspension bridge instrumented with long-term structural health monitoring system

2017 ◽  
Vol 20 (5) ◽  
pp. 674-681 ◽  
Author(s):  
XW Ye ◽  
T Liu ◽  
YQ Ni
Keyword(s):  
Fatigue Life ◽  
Structural Health Monitoring ◽  
Monitoring System ◽  
Corrosion Fatigue ◽  
Health Monitoring ◽  
Welded Joint ◽  
Health Monitoring System ◽  
Structural Health ◽  
Structural Health Monitoring System

The long-term performance of engineering structures in a corrosive environment will be significantly affected by the coupled action of corrosion and fatigue. In this article, a probabilistic corrosion fatigue analytical model is proposed by taking into account the effects of corrosion-induced reduction of the cross-sectional area and deterioration of the fatigue strength of structural components. The proposed model is exemplified to evaluate the probabilistic corrosion fatigue life of a typical welded joint in the suspension Tsing Ma Bridge instrumented with a long-term structural health monitoring system. A genetic algorithm–based mixture parameter estimation method is developed to facilitate the multimodal modeling of stress spectrum derived from the long-term monitoring data of dynamic strain. The achieved results demonstrate that with the increase in the service life, the reliability index of the investigated typical welded joint is dramatically reduced under the combined effect of corrosion and fatigue.

Intelligent Health Monitoring System for a Railway Cable-Stayed Bridge

2010 ◽  
Vol 148-149 ◽  
pp. 1390-1393
Author(s):  
De Shan Shan ◽  
Peng Yan ◽  
Zhen Hua Wang
Keyword(s):  
Information Processing ◽  
Monitoring System ◽  
Health Monitoring ◽  
Signal Transmission ◽  
Structural Safety ◽  
Signal Acquisition ◽  
Processing Technologies ◽  
Health Monitoring System ◽  
Cable Stayed Bridge ◽  
Long Span

Intelligent health monitoring system of the long-span railway cable-stayed bridge requires the comprehensive knowledge of instrumentation, analytical and information processing technologies with the knowledge and experiences in design, construction, operation and maintenance of railway cable-stayed bridge for long-term monitoring the performance throughout its lifecycle. It is necessary to perform sensor-based structural monitoring for identifying the bridge conditions in order to assure the structural safety and to evaluate the operational performance. The considerations for deploying a proper monitoring system are appropriate sensor instrumentation, robust signal acquisition, reliable signal processing, and intelligent signal and information processing. The experience on developing an autonomous monitoring system in the one certain railway cable-stayed bridge newly constructed is introduced in this paper. Sensor and hardware instrumentation, signal transmission, signal acquisition and analysis are schematically described mainly. Experience through this work will be worthwhile lessons for other similar efforts.

Computer Aided Health Monitoring System for Super-Huge Spacial Cable Structures

2010 ◽  
Vol 163-167 ◽  
pp. 2824-2829
Author(s):  
Qi Lin Zhang ◽  
Da Lin Li
Keyword(s):  
Monitoring System ◽  
Health Monitoring ◽  
Design Method ◽  
Complex Structures ◽  
Health Monitoring System ◽  
Analysis Theory ◽  
Computer Based ◽  
Roof Design ◽  
Relative Analysis

Increasingly large and complex structures make it more complicated in analysis, designing and construction, and through the amplification effect caused by the interaction of various parts of the structure, any tiny error in any link could cause huge damage to the building. However, the relative analysis theory and design method are not consummate enough to assess the influence of all kinds of errors. Under this circumstance, structural health monitoring system is an important guarantee to ensure the safety of the structures in both construction and operation stage, and at the same time contributes to make up for the deficiency of theory [1-2]. The Expo Axis project is the largest single project in Expo Site 2010 Shanghai. The Expo Axis project has adopted a whole new architecture form. The roof design as giant light cable-membrane structure about 1000 meter long and about 80 meter width. The computing displacement of the membrane roof is close to 4m. In order to ensure the safety of this structure, a real-time and long-term computer based health monitoring system is applied in the Axis structures.

scholarly journals Overview of integrated health monitoring system installed on cable-stayed bridge and preliminary analysis of results

2021 ◽  
Vol 73 (06) ◽  
pp. 591-604
Keyword(s):  
Monitoring System ◽  
Data Storage ◽  
Health Monitoring ◽  
Yangtze River ◽  
Structural Damage ◽  
Monitoring Data ◽  
Extreme Condition ◽  
Health Monitoring System ◽  
Cable Stayed Bridge ◽  
Integrated Health

The Junshan Yangtze River Bridge, built in Wuhan, China in 2001, is a steel box girder cable-stayed bridge with a main span of 460m. Due to decades of service, the bridge suffered gradual degradation and some damage. Structural health monitoring has attracted worldwide attention due to its capacity of monitoring structural damage, assisting maintenance and management, and ensuring safe operation of bridges. To monitor the performance status of bridges and generate a timely safety alarm, an integrated health monitoring system has been designed and implemented on bridges. This paper provides a thorough account of the monitoring system used at the Junshan Yangtze River Bridge. It mainly focuses on the selection of monitoring variables and arrangement of sensor points, the data collection and transmission system, the data storage and management strategy, and the user interface system. All kinds of monitoring data collected under daily operation, such as vehicle load, deflection, displacement, and cable tension, are analysed. Monitoring data for an extreme condition, which involves two heavy trucks of 178 tons moving across the bridge, are also analysed. The results indicate that the monitoring system works well and that some local welded joints may experience fatigue damage.

Structural Health Monitoring System for The Queensferry Crossing

2018 ◽  
Author(s):  
Torben B. Bangsgaard ◽  
Henrik Gjelstrup ◽  
Andrew Scullion ◽  
Paul Faulkner
Keyword(s):  
Structural Health Monitoring ◽  
Monitoring System ◽  
Health Monitoring ◽  
Asset Management ◽  
Data Warehousing ◽  
Data Driven ◽  
Health Monitoring System ◽  
Structural Health ◽  
Cable Stayed Bridge ◽  
Structural Health Monitoring System

The Structural Health Monitoring System (SHMS) for the new Queensferry Crossing cable stayed bridge, Scotland include more than 1500 sensors combined to yield a world leading SHMS for data driven asset management making use of the latests technologies in data processesing and data warehousing.

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