Global monitoring concepts for bridges

Bergmeister, Konrad; Santa, Ulrich

doi:10.1680/stco.2001.2.1.29

Cited by 17 publications

(6 citation statements)

References 7 publications

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“…It is an information source of utmost importance concerning the structural performance. Structural health monitoring has evolved to become economically advantageous contributing to a more efficient exploitation of the infrastructures [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Development of a long-term monitoring system based on FBG sensors applied to concrete bridges

Rodrigues

Félix

Lage

et al. 2010

Engineering Structures

114

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Section: Introductionmentioning

confidence: 99%

Development of a long-term monitoring system based on FBG sensors applied to concrete bridges

Rodrigues

Félix

Lage

et al. 2010

Engineering Structures

114

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“…Currently, it is possible to remotely monitor highly instrumented structures, with a high degree of automation. In fact, the most recent solutions are sufficiently versatile to carry out remote surveillance tasks with moderate costs (Bergmeister, Santa 2001;Chang et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Traffic Load Events and Structural Effects on Road Bridges Based on Strain Measurements

Sousa

Costa

Henriques

et al. 2015

Journal of Civil Engineering and Management

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Several technical and scientific publications have been made available focussing on Bridge Weight-in-Motion (BWIM) concerning railway bridges. On the contrary, BWIM analysis on road bridges are more scarce and therefore, this work intends to provide a contribution by presenting the BWIM analysis performed on two major road bridges in Portugal – Lezíria Bridge and Pinhão Bridge. These bridges are equipped with electric and optical strain gauges, acquisition systems with features that allow high sampling rates. Based on the collected data and focussing on the bridges’ lifetime, a probabilistic approach to quantify extreme traffic loads was implemented using extreme distribution functions. The bridges’ behaviour to these extreme traffic loads is numerically evaluated and a comparison with the alarm levels established by the bridge designers is performed. Although the bridge’s safety is not compromised, it was concluded that the representativeness of the observation period is a critical issue and the analysis of this kind of results must be carefully considered. A comprehensive discussion about this matter is carried out at the end of this work.

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“…Today it is possible to continuously and remotely monitor highly instrumented structures, with a high degree of automation. Present solutions are versatile enough to allow for surveillance tasks to be remotely carried out in a cost effective manner (Bergmeister and Santa 2001;Chang, et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Long-term monitoring and assessment of a precast continuous viaduct

Sousa

Neves

et al. 2013

Structure and Infrastructure Engineering

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Precast girders have recently been widely employed in the construction of bridges and viaducts. The new bridge over the Tagus River in Portugal, the Lezíria Bridge, comprehends a 9160 m long South Approach Viaduct, which was built with precast girders made continuous in situ. Given the relevance of this construction, a long-term monitoring system was implemented and measurements were taken since the start of the construction. The observed parameters were concrete strains and temperatures, deck rotations, joint displacements, accelerations and also environment temperature and relative humidity. The work presents the precast structure, the monitoring system, and the appraisal of a statistical procedure for the long-term assessment of the structural behaviour. This procedure is based on prediction models, which establish the normal correlation patterns between environmental and material parameters (such as concrete temperature and shrinkage strains), and the observed structural response in terms of strains, rotations and movements of expansion joints. The calculation of the normal correlation pattern comprehends the minimization of a square error. By applying the prediction model to the structural response measured in the South Approach Viaduct of the Lezíria Bridge, it was found that this methodology is a feasible tool for real-time damage detection of bridges.

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Global monitoring concepts for bridges

Cited by 17 publications

References 7 publications

Development of a long-term monitoring system based on FBG sensors applied to concrete bridges

Development of a long-term monitoring system based on FBG sensors applied to concrete bridges

Assessment of Traffic Load Events and Structural Effects on Road Bridges Based on Strain Measurements

Long-term monitoring and assessment of a precast continuous viaduct

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