Sensor Networks, Computer Imaging, and Unit Influence Lines for Structural Health Monitoring: Case Study for Bridge Load Rating

Çatbaş, F. Necati; Zaurín, Ricardo; Gül, Mustafa; Gokce, H. Burak

doi:10.1061/(asce)be.1943-5592.0000288

Cited by 51 publications

(27 citation statements)

References 5 publications

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“…Although some basic data analyses are presented in the paper as case studies, a detailed analysis of the monitoring data from the specific mechanical and structural components of the bridge is not in the scope of this study. These studies have been and will be reported in other publications (see for example Catbas, Zaurin, et al, 2012).…”

Section: Introductionmentioning

confidence: 70%

“…Other than these examples, there are also some studies on lift bridges, mainly related to construction by Ramey (1983), Griggs (2006) and Zhao, Wang, and Pang (2011). The authors have investigated the load rating of movable bridges, modelling for various possible damage simulations, identification of the most common maintenance issues and implementation of novel sensing and image technologies on movable bridges (Catbas, Gokce, Gul, & Frangopol, 2011;Catbas, Zaurin, Gul, & Gokce, 2012). However, there are no comprehensive studies in the literature which outline all the critical damage, deterioration considerations, condition assessment methods for maintenance for movable bridge populations along with an extensive monitoring system for both structural and mechanical components.…”

Section: Introductionmentioning

confidence: 99%

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Critical issues, condition assessment and monitoring of heavy movable structures: emphasis on movable bridges

Çatbaş

Gül

Gokce

et al. 2012

Structure and Infrastructure Engineering

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In this paper, a relatively less studied class of structures is presented based on the research conducted on Florida's movable bridges over the last several years. Movable bridges consist of complex structural, mechanical and electrical systems that provide versatility to these bridges, but at the same time, create intermittent operational and maintenance challenges. Movable bridges have been designed and constructed for some time; however, there are fewer studies in the literature on movable bridges as compared to other bridge types. In addition, none of these studies provide a comprehensive documentation of issues related to the condition of movable bridge populations in conjunction with possible monitoring applications specific to these bridges. This paper characterises and documents these issues related to movable bridges considering both the mechanical and structural components. Considerations for designing a monitoring system for movable bridges are also presented based on inspection reports and expert opinions. The design and implementation of a monitoring system for a representative bascule bridge are presented along with long-term monitoring data. Various movable bridge characteristics such as opening/closing torque, bridge balance and friction are shown since these are critical for maintenance applications on mechanical components. Finally, the impact of environmental effects (such as wind and temperature) on bridge mechanical characteristics is demonstrated by analysing monitoring data for more than 1000 opening/closing events.

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Section: Introductionmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Critical issues, condition assessment and monitoring of heavy movable structures: emphasis on movable bridges

Çatbaş

Gül

Gokce

et al. 2012

Structure and Infrastructure Engineering

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“…First, the desired response (e.g., vertical deflection or rotation) of a specific location is recorded. Then, by synchronizing the recorded measurement with the location of moving loads (e.g., vehicular loads) and solving an inverse problem, the influence line, u A (ξ), of a unit load can be extracted [10][11][12]19,[21][22][23].…”

Section: Calculation Of Moment M(ξ)mentioning

confidence: 99%

Framework for Flexural Rigidity Estimation in Euler-Bernoulli Beams Using Deformation Influence Lines

Zeinali

Story

2017

Infrastructures

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Structural degradation is an inevitable part of a structure's service life. Detecting structural impairments and assessing their nature is a significant challenge. Degradations reduce structural system stiffness and subsequently affect system deformations. An appropriate structural health index that is able to capture these changes in deformation and relate them to a structural system stiffness may help engineers to adequately rate structural condition. This paper outlines a theoretical framework for the utilization of static deformation influence lines for estimating the flexural rigidity of Euler-Bernoulli beams. In the proposed technique, the relationship between the second derivative of the deformation influence line and the flexural rigidity for both statically determinate and indeterminate beam structures is presented. The proposed method provides a flexural rigidity estimate (FRE) over the entire span that is based on a single measurement location and estimates both the location and severity of impairments, regardless of the location of the measurement or the damaged zones. Noisy analytical simulations are presented with noise levels of 0%, 0.5%, 1%, 2%, 3%, and 4%; in all cases the modeled damage is quantified and localized using the FRE. A laboratory experiment is also presented that validates the theoretical framework.

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“…and Shinozuka 2006;Rathinam et al 2008;Ye et al 2011). Several studies also presented use of video cameras for condition monitoring of structures (Catbas et al 2012;Fraser 2006;Fraser et al 2010;Golparvar-Fard et al 2012;Guo et al 2009;Hanji et al 2003;Higgins and Turan 2011;Laefer et al 2010;Zaurin and Catbas 2009;Zaurin and Catbas 2011). Image analysis techniques have also been investigated for corrosion monitoring of structures.…”

Section: Recent Related Literaturementioning

confidence: 99%

Critical Issues, Condition Assessment and Monitoring of Movable Bridges: Image Processing for Open Gear Monitoring

Gül¹,

Çatbaş²

2013

Structures Congress 2013

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Movable bridges are one of the least studied bridge types. In this paper, examples from a movable bridge evaluation study are presented based on the research conducted on a movable bridge in Florida over the last several years. Movable bridges face operational and maintenance challenges mainly due to complex structural, mechanical and electrical systems, which at the same time provide their versatility. Although there are a few studies focusing on movable bridges, none of these studies provide a complete list of the problems related to the condition of movable bridge populations in conjunction with possible monitoring applications specific to these bridges. This study summarizes these issues related to movable bridges considering both the structural and mechanical components. After presenting the design and implementation of a monitoring system to a representative bascule bridge, analysis of image data for evaluating the lubrication levels in an open gear is presented. The findings from this analysis are compared with the maintenance logs. It is shown that continuous monitoring may provide invaluable information about safe, reliable and cost-effective operation and maintenance of movable bridges.

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Sensor Networks, Computer Imaging, and Unit Influence Lines for Structural Health Monitoring: Case Study for Bridge Load Rating

Cited by 51 publications

References 5 publications

Critical issues, condition assessment and monitoring of heavy movable structures: emphasis on movable bridges

Critical issues, condition assessment and monitoring of heavy movable structures: emphasis on movable bridges

Framework for Flexural Rigidity Estimation in Euler-Bernoulli Beams Using Deformation Influence Lines

Critical Issues, Condition Assessment and Monitoring of Movable Bridges: Image Processing for Open Gear Monitoring

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