Virtual structural health monitoring and remaining life prediction of steel bridges

Hajializadeh, Donya; O’Brien, Eugene J.; O’Connor, Alan

doi:10.1139/cjce-2016-0286

Cited by 22 publications

(16 citation statements)

References 45 publications

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“…However, previous studies in road and railway B-WIM [26] have shown that there is no obvious correlation between accuracy and the speed of the vehicle. The application of the B-WIM system in weighting vehicles at full highway speed (checked against static weights) is demonstrated in several studies [25,39]. The bridge is supported on four steel bearings, illustrated in Figure 5, two at each end.…”

Section: Rb-wim Installation and Testingmentioning

confidence: 99%

Development and Testing of a Railway Bridge Weigh-in-Motion System

et al. 2020

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This study describes the development and testing of a railway bridge weigh-in-motion (RB-WIM) system. The traditional bridge WIM (B-WIM) system developed for road bridges was extended here to calculate the weights of railway carriages. The system was tested using the measured response from a test bridge in Poland, and the accuracy of the system was assessed using statically-weighed trains. To accommodate variable velocity of the trains, the standard B-WIM algorithm, which assumes a constant velocity during the passage of a vehicle, was adjusted and the algorithm revised accordingly. The results showed that the vast majority of the calculated carriage weights fell within ±5% of their true, statically-weighed values. The sensitivity of the method to the calibration methods was then assessed using regression models, trained by different combinations of calibration trains.

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Section: Rb-wim Installation and Testingmentioning

confidence: 99%

Development and Testing of a Railway Bridge Weigh-in-Motion System

et al. 2020

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“…A finite analysis was performed on cracked beam using ANSYS 18.1 to for estimation of residual life of cracked beam [1,16,17]. A transverse crack has width of 1.25 mm and depth of 2 mm was made at a distance of 150 mm from the fixed end of the beam for estimation of residual life of cracked beam.…”

Section: Residual Life Estimation Of Cracked Beammentioning

confidence: 99%

Residual life estimation of structural beam using experimental and numerical modal analysis methods

Siva¹,

Ramakrishna²

2020

Journal of Mechanical and Energy Engineering

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A structural beam is a common element in many mechanical structures such as ship propeller shaft, crane boom, and air craft wings. In the present paper experimental and numerical modal analysis are carried out for estimating the damage detection, geometric location of the damage, severity of damage and residual life of structural beam to prevent unexpected failures of the mechanical structures. Experimental and numerical modal analysis results for healthy and cracked beam are compared for validation of numerical methodology used in the present paper. Experimental modal analysis is performed on both healthy and cracked beam with the help of impact hammer, acceleration sensor and FFT analyzer associated with EDM (Engineering Data Management) software. Modal tests are conducted using impact method on selected locations of the entire healthy and cracked beam to find the first three natural frequencies, which are used to detect the presence of damage and geometric location of the damage. Three parametric studies are carried out to know the effect of crack depth, crack location and crack orientation on the natural frequencies of the cracked beam. Finally, residual life of a healthy and cracked beam was estimated using Basiquin’s equation and finite element analysis software called ANSYS 18.1.

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“…Weigh-in-Motion systems were initially developed for overload monitoring and control purposes. However data gathered from WIM systems have also been used for other purposes such as updating notional traffic load models for bridge design [11], developing a site-specific bridge load model [12], calculating a dynamic amplification factor for bridge design and/or assessment [13], planning and management of road infrastructure [14], and assessment of fatigue load calculations [15][16][17]. In recent studies, it has also been investigated for SHM purposes.…”

Section: Introductionmentioning

confidence: 99%

Identifying damage on a bridge using rotation-based Bridge Weigh-In-Motion

O’Brien

Hester

Huseynov

et al. 2020

J Civil Struct Health Monit

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Bridge Weigh-in-Motion (B-WIM) systems use the bridge response under a traversing vehicle to estimate its axle weights. The information obtained from B-WIM systems has been used for a wide range of applications such as pre-selection for weight enforcement, traffic management/planning and for bridge and pavement design. However, it is less often used for bridge condition assessment purposes which is the main focus of this study. This paper presents a bridge damage detection concept using information provided by B-WIM systems. However, conventional B-WIM systems use strain measurements which are not sensitive to local damage. In this paper the authors present a B-WIM formulation that uses rotation measurements obtained at the bridge supports. There is a linear relationship between support rotation and axle weight and, unlike strain, rotation is sensitive to damage anywhere in the bridge. Initially, the sensitivity of rotation to damage is investigated using a hypothetical simply supported bridge model. Having seen that rotation is damage-sensitive, the influence of bridge damage on weight predictions is analysed. It is shown that if damage occurs, a rotation-based B-WIM system will continuously overestimate the weight of traversing vehicles. Finally, the statistical repeatability of ambient traffic is studied using real traffic data obtained from a Weigh-in-Motion site in the U.S. under the Federal Highway Administration’s Long-Term Pavement Performance programme and a damage indicator is proposed as the change in the mean weights of ambient traffic data. To test the robustness of the proposed damage detection methodology numerical analysis are carried out on a simply supported bridge model and results are presented within the scope of this study.

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Virtual structural health monitoring and remaining life prediction of steel bridges

Cited by 22 publications

References 45 publications

Development and Testing of a Railway Bridge Weigh-in-Motion System

Development and Testing of a Railway Bridge Weigh-in-Motion System

Residual life estimation of structural beam using experimental and numerical modal analysis methods

Identifying damage on a bridge using rotation-based Bridge Weigh-In-Motion

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