Identification of unusual events in multi-channel bridge monitoring data

Omenzetter, Piotr; Brownjohn, James; Moyo, Pilate

doi:10.1016/s0888-3270(03)00040-2

Cited by 56 publications

(37 citation statements)

References 7 publications

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“…In the study by Omenzetter et al (2004), hourly measurements of strain and internal pressure (i.e. stresses) were taken during and after construction of the Singapore-Malaysia Second Link Bridge, which was built using the balanced cantilever method over a two month period.…”

Section: Strain Methods That Detects Damage Using Signal Processingmentioning

confidence: 99%

Development of a structural health monitoring system for the life assessment of critical transportation infrastructure.

Roach¹,

Jáuregui

Daumueller

2012

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Recent structural failures such as the I-35W Mississippi River Bridge in Minnesota have underscored the urgent need for improved methods and procedures for evaluating our aging transportation infrastructure. This research seeks to develop a basis for a Structural Health Monitoring (SHM) system to provide quantitative information related to the structural integrity of metallic structures to make appropriate management decisions and ensuring public safety.This research employs advanced structural analysis and nondestructive testing (NDT) methods for an accurate fatigue analysis. Metal railroad bridges in New Mexico will be the focus since many of these structures are over 100 years old and classified as fracture-critical. The term fracture-critical indicates that failure of a single component may result in complete collapse of 4 the structure such as the one experienced by the I-35W Bridge. Failure may originate from sources such as loss of section due to corrosion or cracking caused by fatigue loading. Because standard inspection practice is primarily visual, these types of defects can go undetected due to oversight, lack of access to critical areas, or, in riveted members, hidden defects that are beneath fasteners or connection angles. Another issue is that it is difficult to determine the fatigue damage that a structure has experienced and the rate at which damage is accumulating due to uncertain history and load distribution in supporting members. A SHM system has several advantages that can overcome these limitations. SHM allows critical areas of the structure to be monitored more quantitatively under actual loading. The research needed to apply SHM to metallic structures was performed and a case study was carried out to show the potential of SHM-driven fatigue evaluation to assess the condition of critical transportation infrastructure and to guide inspectors to potential problem areas. This project combines the expertise in transportation infrastructure at New Mexico State University with the expertise at Sandia National Laboratories in the emerging field of SHM.5

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Section: Strain Methods That Detects Damage Using Signal Processingmentioning

confidence: 99%

Development of a structural health monitoring system for the life assessment of critical transportation infrastructure.

Roach¹,

Jáuregui

Daumueller

2012

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“…Case studies on SHM [4][5][6][7], specially focused on damage identification and structural safety maintenance, for application on large infrastructures as well as on residential and commercial buildings, have become increasingly narrated in the literature. Examples of the decentralized systems and advances on the development of sensors are frequently introduced in the structural monitoring area [8][9][10].…”

Section: Importance Of Shm For Structural Safety Maintenancementioning

confidence: 99%

Global overview on advances in structural health monitoring platforms

Mesquita

Antunes

Coelho

et al. 2016

J Civil Struct Health Monit

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Advances in the development of sensors, data processing systems, and numerical models have motivated the implementation of structural health monitoring (SHM) specially focused on the assessment of structural safety. Thus, this work presents a literature review about SHM platforms, especially from 1993 to 2015. In this way, a short history review about the recent advances on SHM, mainly related with dynamic monitoring, was summarized, and a benchmark and the main guidelines related with SHM platforms were also included in this review. Some case studies are also described here. Special attention was given to SHM platforms, and a method for their classification (an extension of Rytter's method) is presented. In addition, experiences related with heritage constructions, specially focused on maintenance, were included in this work. In the final section, some observations are made about the new prospects for SHM. The recent advances on SHM platforms contributed to the development of adaptive systems and to the cost reduction of the monitoring systems implementation, allowing the increase of its application in real structures. However, the monitoring systems should be implemented, optimizing all the available sensing technologies.

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“…The first one [28] employs wavelet transform. Raw strain data are filtered into high and low frequency components using the Daubechies discrete wavelet transform [29].…”

Section: Tuas Second Link: Long Term Performance Monitoringmentioning

confidence: 99%

Lessons from monitoring the performance of highway bridges

Brownjohn

Moyo

Omenzetter

et al. 2005

Struct. Control Health Monit.

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Monitoring programs on four very different highway bridges originating from a range of requirements related to calibration of numerical models, assessment of load capacity and long term tracking of performance are summarized in order to draw out lessons relevant to the future development of structural health monitoring 'systems'. These lessons concern validation of structural models, appropriate methods for instrumentation, communication, data management and system identification. The paper presents experience obtained by collaboration in a form intended to educate, by example, bridge operators about potential and limitations of SHM systems.

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Identification of unusual events in multi-channel bridge monitoring data

Cited by 56 publications

References 7 publications

Development of a structural health monitoring system for the life assessment of critical transportation infrastructure.

Development of a structural health monitoring system for the life assessment of critical transportation infrastructure.

Global overview on advances in structural health monitoring platforms

Lessons from monitoring the performance of highway bridges

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