Evaluation of a strain monitoring system for existing steel railway bridges

Costa, Bruno J. Afonso; Figueiras, Joaquim

doi:10.1016/j.jcsr.2011.12.006

Cited by 27 publications

(10 citation statements)

References 15 publications

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“…A few recent studies illustrating PB models for interpreting static measurements are mentioned here. Costa and Figueiras (2012) employed a FE model of Trezói Bridge (Marques & Cunha, 2010), which is a metallic railway bridge in Portugal, to interpret measurements from its strain monitoring system. FE models of the Tamar Bridge (Westgate & Brownjohn, 2011) in the UK and the Runyang (Wang, Li, & Li, 2010) suspension bridge in China were calibrated with high accuracy using ambient vibration and static measurements.…”

Section: Structural Identification (St-id)mentioning

confidence: 99%

Long-term structural health monitoring of the Cleddau bridge: evaluation of quasi-static temperature effects on bearing movements

Kromanis

Kripakaran

Harvey

2015

Structure and Infrastructure Engineering

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This paper illustrates how long-term measurements can be analysed to understand bridge behaviour under changing environmental conditions and how the developed understanding can help explain the performance of its critical components. Measurements from the Cleddau Bridge, a structure that has been continuously monitored for more than two years, are used to investigate thermal effects in steel box-girder bridges and, in particular, their bearings. Observed temperature distributions are very different to the recommended distributions in design codes (BS EN 1991-5:2003. These temperature distributions create plan bending of the box girder, which in turn impose forces at the bearings that have contributed to its wear. This paper investigates bearing movements of the bridge using numerical models, and estimates the resulting forces at the supports. A physics-based model of the bridge is created to which temperature distributions inferred from in-situ measurements are supplied as input. Model predictions are validated against measured deformations at the bearings. Subsequently the model is used to predict forces at the bearings due to plan bending and bearing locking.Results quantify the impact that thermal effects have on the performance of the bearings. They also highlight the significance of considering a range of temperature distribution scenarios that go beyond those given in the design codes in order to reliably evaluate thermal effects at the design stage.

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Section: Structural Identification (St-id)mentioning

confidence: 99%

Long-term structural health monitoring of the Cleddau bridge: evaluation of quasi-static temperature effects on bearing movements

Kromanis

Kripakaran

Harvey

2015

Structure and Infrastructure Engineering

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“…It is even possible to embed FBG sensors in adhesive layers during the process of joining two substrates. 43 Nowadays FBG sensors are often used for structural health monitoring on various safety-critical structures: bridges, 39,44 buildings, 45 aircraft structures, 46 marine vessels, 47 offshore platforms and wind turbines. 43,48 FBG sensors can be used for structural health monitoring of adhesive joints, 49 by measuring strain along a bonded region.…”

Section: Fbg Sensing Principlesmentioning

confidence: 99%

Measuring moisture absorption in structural adhesive joints with fibre Bragg grating sensors

Fevery

Hallez

Vandepitte

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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The increased joint efficiency, distribution of loads and decrease in stress concentrations have led to the increased use of adhesives for structural bonding. However, there are a limited number of techniques for verifying and monitoring the integrity and durability of adhesive bonds. This article studies the potential of estimating the curing and ageing of adhesive bulk samples with embedded fibre Bragg grating sensors through measuring the strain associated with hygroscopic expansion. This is achieved by relating the output of a fibre Bragg grating sensor to the deformation of the structure in which it is embedded. This work considers the possibility of mapping the changing structural resistance to mechanical loading (stiffness) of adhesive bonds as a function of time, under the influence of temperature and moisture as environmental factors. The goal is to map the influence of these environmental factors separately on the one hand, and their combined effect on adhesive bonds, on the other hand. This study subjects several bulk specimens to various environmental ageing loads. The swelling, associated to moisture absorption and that results in mechanical strain, is measured with fibre Bragg grating sensors. The moisture absorption behaviour at different temperatures and environmental relative humidity conditions determined in this way is verified using classical test methods (e.g. differential scanning calorimetry, gravimetric) on multiple fibreless specimens.

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“…In this way, global monitoring techniques (using accelerometers, interferometric radar…) are combined with local monitoring techniques (strain gauges) to obtain a better picture about potential local damage on individual elements, as recommended in [4]. Suitability of strain gauges for monitoring of steel railway bridges was confirmed in [5] and there are several case studies of SHM on bridges, where the strain was measured on different structural elements [6][7][8][9]. The work was also based on past experiences with test and measurements of various bridges [10,11].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Performance Indicator of Railway Bridges Using Updated Finite Element Model

Sokol

Márföldi

Venglár

et al. 2019

Strojnícky Časopis - Journal of Mechanical Engineering

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Structural health monitoring (SHM) can provide information needed to make important decisions regarding the maintenance of bridge structures. However, the data collected from monitoring needs to be first translated into actionable, quantitative or qualitative based characteristics, that indicate the condition of a bridge. This paper presents a process of evaluation of such performance indicator in case of a steel railway bridge using the updated FE model and in-situ measurements of strains on selected stringers and floorbeams.

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Evaluation of a strain monitoring system for existing steel railway bridges

Cited by 27 publications

References 15 publications

Long-term structural health monitoring of the Cleddau bridge: evaluation of quasi-static temperature effects on bearing movements

Long-term structural health monitoring of the Cleddau bridge: evaluation of quasi-static temperature effects on bearing movements

Measuring moisture absorption in structural adhesive joints with fibre Bragg grating sensors

Evaluation of Performance Indicator of Railway Bridges Using Updated Finite Element Model

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