A Study on the Problems with Long-Term Bridge Monitoring Systems, and Suggested Solutions

2008 ◽  
Vol 47-50 ◽  
pp. 53-56
Author(s):  
Ki Tae Park
Keyword(s):  
Monitoring System ◽  
Large Scale ◽  
Fiber Optic Sensor ◽  
Sensor Technology ◽  
Monitoring Systems ◽  
Bridge Monitoring ◽  
Problems And Solutions ◽  
Bridge Structures ◽  
Bridge Monitoring System

The first long-term bridge monitoring system in Korea was installed in 1995, and many bridges have been maintained by long-term monitoring systems. Recently, reliability of data and cost effectiveness have been increased by advanced sensor technology (fiber optic sensor, RFID, USN etc) and measuring equipment. In Korea, the large-scale project for the safety network integration for long-term smart monitoring systems for bridge structures started in 2007, and this is the second year of the project. In this system, various innovative sensor types are considered. To increase the effectiveness of this network system, an analysis of the problems with the conventional long-term bridge monitoring system and solution investigations are needed. The biggest problems are low durability and data reliability because of noise, and the lack of data applications techniques. Therefore, in this paper, a brief summary of the projects is presented and the state of bridge monitoring systems in Korea is investigated, and various problems and solutions for these problems are briefly suggested.

scholarly journals Innovative aspects in developing bridge monitoring systems

2018 ◽  
Vol 216 ◽  
pp. 01009 ◽  
Author(s):  
Andrey Yashnov ◽  
Pavel Kuzmenkov
Keyword(s):  
Systematic Approach ◽  
Operational Reliability ◽  
Design Parameters ◽  
Monitoring Systems ◽  
Bridge Monitoring ◽  
Strain Behavior ◽  
Status Monitoring ◽  
Accumulated Damage ◽  
Bridge Structures

The average age of bridges in operation and their accumulated damage are ever increasing, while design solutions of new bridges are increasingly complex. It is difficult to adequately reflect performance characteristics of these structures in design models. In order to prevent accidents during construction and operation, it is necessary to verify experimentally that the actual stress-strain behavior corresponds to design parameters. Special monitoring systems are developed and implemented to improve the operational reliability of structures. This study uses mathematical modeling and instrumental measurements to develop monitoring systems. A systematic approach has been implemented. The paper presents the results produced by modern automated measuring, recording and data processing equipment to provide online diagnostics and long-term status monitoring of bridge structures.

scholarly journals A FPGA-based parallel method of bridge data compression

2021 ◽  
Vol 2108 (1) ◽  
pp. 012068
Author(s):  
Jianlong Zhang
Keyword(s):  
Monitoring System ◽  
Rapid Development ◽  
Transmission Efficiency ◽  
Sensor Technology ◽  
Inspection System ◽  
Negative Effects ◽  
Term Operation ◽  
Transmission Cost ◽  
Bridge Monitoring System

Abstract With the rapid development of computer technology, sensor technology, and communication technology, people have gradually designed and continuously improved the health monitoring system of bridge structure. Due to the uninterrupted long-term work of the bridge monitoring system, the long-term operation of a large number of sensors will generate massive amounts of data, and a lot of data to be transmitted from the data collector at the bridge site to the data monitoring center requires the use of a wireless network with limited speed, which will consume a lot of time, thereby bring such negative effects as reducing transmission efficiency, reducing throughput, increasing transmission costs, and affecting the entire bridge inspection system. This paper proposes a parallel compression method of LZSS data based on FPGA, which can compress the incoming data from the sensor system in parallel in the data acquisition system to improve the transmission efficiency, increase the throughput, and reduce the transmission cost.

Research on Bridge Health and Safety Monitoring System

2010 ◽  
Vol 39 ◽  
pp. 131-135
Author(s):  
Xiao Chun Fan
Keyword(s):  
Monitoring System ◽  
Health And Safety ◽  
Safety Monitoring ◽  
Monitoring Systems ◽  
Bridge Monitoring ◽  
Long Span Bridges ◽  
Long Span ◽  
Safety Monitoring System ◽  
Bridge Monitoring System ◽  
Existing Bridges

Research on Bridge health and safety monitoring system is a hot topic. The safety monitoring systems have been applied in some long span bridges. Based on investigation, several problems in health and safety monitoring systems of existing bridges and the developing trends were introduced. This paper summarized the present research on bridge monitoring system worldwide. We hope it could be helpful to the application of bridge health and safety monitoring system.

Research and Design on Monitoring System of Simple Bridge Based on Virtual Instrument Technology

2012 ◽  
Vol 490-495 ◽  
pp. 2624-2627
Author(s):  
Hua Wen Zheng ◽  
Liu Chang ◽  
Chuan Hui Wu ◽  
Yu Liang
Keyword(s):  
Monitoring System ◽  
Virtual Instrument ◽  
Analysis Data ◽  
System Structure ◽  
Time Data ◽  
Bridge Monitoring ◽  
Instrument Technology ◽  
Software And Hardware ◽  
Bridge Monitoring System ◽  
Research And Design

Design of a monitoring system based on virtual instrument technology for a simple bridge. This paper discusses the bridge monitoring system structure, software and hardware. The system can realize functions such as data acquisition, real-time data display, online analysis, offline analysis, data management and so on. Therefore, the monitoring system can be applied to a variety of bridges. The presented monitoring system has an important guidance meaning and practical value for bridge monitoring.

Temperature distribution in different bridges types based on data from SHM systems

2021 ◽  
Author(s):  
Jan Biliszczuk ◽  
Maciej Hildebrand ◽  
Marco Teichgraeber ◽  
Hanna Onysyk
Keyword(s):  
Temperature Distribution ◽  
Monitoring Systems ◽  
Temperature Changes ◽  
Cable Stayed Bridge ◽  
Stay Cables ◽  
Bridge Structures ◽  
Temperature Impact ◽  
Materials Used ◽  
Long Term Observation

<p>Monitoring systems have given the possibility of varied and long-term observation of bridge structures. The paper prestents the analysis of temperature impact on various bridge elements. The data comes from three different large bridges in Poland, equipped with extensive monitoring systems, namely from an arch bridge in Puławy (built in 2008), cable-stayed bridge in Płock (built in 2005) and the cable-stayed bridge in Wrocław (built in 2011). After few years of observation an enormous and valuable database of measured parameters was stored. The analysis shows how temperature changes between individual bridge components (e.g. between decks, pylon and stay cables) affect the structure mechanical behaviour and whether the influence fulfil the standards’ recommendations. Due to various static schemes and materials used in the described bridges, individual and non-typical impact of thermal loads is expected.</p>

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