Contribution of<i>in situ</i>and laboratory investigations for assessing seismic vulnerability of existing bridges

Pellegrino, Carlo; Zanini, Mariano Angelo; Zampieri, Paolo; Modena, Claudio

doi:10.1080/15732479.2014.938661

Cited by 30 publications

(4 citation statements)

References 14 publications

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“…Probing is required when a quantitative characterization of main material properties is required, and it commonly consists in the extraction of samples, to be subsequently characterized via laboratory tests (e.g., when dealing with the characterization of steel or concrete stress-strain curves) or with in-situ tests (e.g., single-double flat jack systems, see Pellegrino et al, 2014). Depending on the material of each structural element, different types of probing should be carried out.…”

Section: Probingmentioning

confidence: 99%

State-Of-Research on Performance Indicators for Bridge Quality Control and Management

Zanini

Faleschini

Casas

2019

Front. Built Environ.

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The present study provides a review of the most diffused technical and non-technical performance indicators adopted worldwide by infrastructure owners. This work, developed within the European COST Action TU 1406-"Quality specifications for roadway bridges, standardization at a European level," aims to summarize the state-of-art maintenance scheduling practices adopted by bridge owners, mainly focusing on the identification and classification of the most diffused performance indicators (PIs). PIs are subdivided in technical and non-technical ones: for this latter subclass, PIs are classified in environmental, social and economic-targeted. The study aims to be a reference for researchers dealing with performance-based assessments and bridge maintenance and management practices.

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Section: Probingmentioning

confidence: 99%

State-Of-Research on Performance Indicators for Bridge Quality Control and Management

Zanini

Faleschini

Casas

2019

Front. Built Environ.

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“…Prior to evaluating the safety level of an existing masonry arch bridge, its structural health condition should be assessed (Pellegrino et al, 2014). To this purpose, the following activities can be undertaken:…”

Section: Incidence Of Materials Deterioration and Damage Conditionmentioning

confidence: 99%

“…The combined effect of these factors progressively induces material deterioration (decrease of mechanical properties), damage development (opening of joints and ring separation in arch barrels, cracks in piers, wing walls and parapets, loss of bricks) and deformations (distortion of the arch profile, out-of-plane rotation of spandrel walls). Inspection and long-term monitoring have also revealed the possibility of occurrence of multiple damage and failure modes in the same bridge (Page et al 1991;Helmerich et al, 2012;Pellegrino et al, 2014;Modena et al, 2015;Rota et al 2005;Stablon 2011; Kaminski and Bien, 2013;Harvey et al, 2013;. Therefore, on the one hand, there is still today the need for a deeper understanding of the structural behaviour of masonry arch bridges and for a more aware choice of the analysis method to assess their load-carrying capacity, safety level and life expectancy, in order to inform maintenance, repair and strengthening strategies.…”

Section: Introductionmentioning

confidence: 99%

A review of experimental investigations and assessment methods for masonry arch bridges

Sarhosis

Santis

Felice

2016

Structure and Infrastructure Engineering

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Masonry arch bridges constitute a significant proportion of European road and rail infrastructures.Most of them are well over 100 years old and are supporting traffic loads many times above those originally envisaged. The inherent variation in their constituent materials, the traditional design criteria and methods used for their construction, their deterioration over time caused by weathering processes and the development of other defects, significantly influence the mechanical response of these historic structures. A deep understanding on the numerous factors that affect the structural behaviour of masonry arch bridges and on the analysis methods to assess the life expectancy of such bridges and inform maintenance and strengthening strategies is essential. This paper provides a critical review of the experimental studies that have been carried out and of the assessment approaches that have been developed in the last three decades to these aims. The current knowledge is established and areas of possible future research work are identified, with the aim of providing students and researchers, asset managers and bridge owners, and practitioners with a guidance for research activities and maintenace strategies.

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“…De Santis and De Felice [12] proposed a fiber beambased methodology to assess the seismic capacity of masonry arches and arch bridges using pushover analyses under different load distributions and nonlinear incremental dynamic analyses under earthquake ground motions. Pellegrino et al [13] presented that use of in situ and laboratory tests for seismic vulnerability assessment of bridges may be a useful instrument to improve seismic assessment. Marefat et al [14] carried out pushover analyses for seismic assessment of plain concrete arch railway bridges using two-dimensional finite element models calibrated by using results of in-situ field dynamic load tests.…”

Section: Introductionmentioning

confidence: 99%

Fragility analysis of a historical reinforced concrete arch railway bridge

Özakgül

Yilmaz

Caglayan

2020

Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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In this study, fragility analysis of a reinforced concrete arch railway bridge with a total length of 285 m having seven spans of 35 m, a height of 34 m and 15 ‰ slope were performed. The bridge constructed in 1928 still continues to give service. Because the bridge is located in a seismically active region in the southern part of Turkey and on a road, which is critical and important for national railway transportation, it was aimed to perform a probabilistic seismic assessment of the bridge. For this purpose, firstly, 3D finite-element model of the bridge was generated with the software SAP2000 according to the original constructional drawings. Then, the initial FE model was verified using its natural frequencies and mode shapes obtained from in-situ field acceleration measurements. Nonlinear time-history analyses were performed to obtain the seismic demands for 60 different real earthquake records. Probabilistic seismic demand model (PSDM) was derived to determine relations between engineering demand parameter (EDP) and intensity measure (IM). Lateral displacements of the mid-spans were considered as a damage state for three different service velocities. Finally, fragility curves of the bridge were derived.

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Contribution ofin situand laboratory investigations for assessing seismic vulnerability of existing bridges

Cited by 30 publications

References 14 publications

State-Of-Research on Performance Indicators for Bridge Quality Control and Management

State-Of-Research on Performance Indicators for Bridge Quality Control and Management

A review of experimental investigations and assessment methods for masonry arch bridges

Fragility analysis of a historical reinforced concrete arch railway bridge

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