Failure analysis of masonry arch bridges subject to local pier scour

Zampieri, Paolo; Zanini, Mariano Angelo; Faleschini, Flora; Hofer, Lorenzo; Pellegrino, Carlo

doi:10.1016/j.engfailanal.2017.05.028

Cited by 94 publications

(43 citation statements)

References 49 publications

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“…Given the high number of masonry-arch bridges in Europe and worldwide [7] and their socio-economic and cultural heritage value, the accurate prediction of their capacity against scour is of paramount importance. The problem has been addressed to date only by few numerical studies, employing soil-foundation-structure interaction models with different level of complexity [3,8]. These studies have shed light on the importance of properly accounting for the scour hole shape in assessing the bridge capacity against scour and the collapse mechanism.…”

Section: Introductionmentioning

confidence: 99%

Modal properties variation and collapse assessment of masonry arch bridges under scour action

Scozzese

Ragni

Tubaldi

et al. 2019

Engineering Structures

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This paper investigates the problem of flood-induced scour on masonry arch bridges through the analysis of a real case study, Rubbianello Bridge. This is a multi-span masonry arch bridge located in Central Italy, which suffered the collapse of two of the seven spans due to foundation scour during a severe flood in December 2013. The study has a twofold aim: to evaluate with a numerical model the level of scour which led to the bridge failure in 2013 and the corresponding collapse mechanism, and to assess the sensitivity of the bridge's modal properties (vibration frequencies and mode shapes) to different levels of scour. An accurate nonlinear three-dimensional model of the bridge is developed, whose elastic properties are calibrated to match the results of dynamic identification tests performed via Operational Modal Analysis (OMA) on the remaining portion of the bridge. A numerical simulation of the effects of the scour hole progression is also performed on the full bridge, according to recently proposed techniques. The study results provide useful insights on both the cause of collapse of the bridge and the suitability of OMA for bridge scour monitoring.

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Section: Introductionmentioning

confidence: 99%

Modal properties variation and collapse assessment of masonry arch bridges under scour action

Scozzese

Ragni

Tubaldi

et al. 2019

Engineering Structures

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“…Following the notation of Figure 2, the solution of the equilibrium problem is easily given by a system of equilibrium equations (three global equilibrium conditions and a balance equation around the point 2 P ) expressed in the matrix form [37]  Q r q…”

Section: Basic Hypothesesmentioning

confidence: 99%

“…Constitutive models allow to consider the effects related to the possible presence of damages. Recently, Zampieri et al analysed the effects of local pier scour in a multi-span masonry bridges [37] and the influence of no-horizontal springing supports of the masonry arch on the collapse mechanisms, with a numerical approach supported by experimental observations [38,39].…”

Section: Introductionmentioning

confidence: 99%

Collapse displacements of masonry arch with geometrical uncertainties on spreading supports

Zampieri

Cavalagli

Gusella

et al. 2018

Computers & Structures

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This work is aimed at evaluating the collapse displacement of masonry arch subjected to spreading supports. This is achieved through a general application of the virtual works principle. The problem is described in a finite displacements formulation and investigated with a probabilistic approach, also considering the effects of the geometrical uncertainties. This aspect is related to the imperfections of the voussoirs, which affect the structural shape. The comparison between the numerical and experimental results, derived both by the literature and laboratory tests, confirms that the geometrical irregularities can significantly affect the results obtained on the nominal structural geometry. Moreover, the disagreement observed in the experimental tests is explained.

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“…Following the works by Heyman, many researchers have studied, with rigid block analysis, the ultimate condition of masonry arch structures due to different type of load conditions and different arch geometries. In particular, some of these works focused on collapse mechanisms due to horizontal loads on: masonry circular arches [17][18][19], masonry buttered arches and masonry pointed arches [20]. Although rigid block analysis is the simplest type of analysis used for the structural assessment of masonry arches, it gives reliable results.…”

Section: Introductionmentioning

confidence: 99%

Collapse Mechanisms of Masonry Buttressed With Settled Support

Zampieri¹,

Pellegrino²

2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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This contribute analyses the collapse mechanisms of a circular masonry arch supported on rectangular slender abutments when subjected to an imposed settlement of one support in addition to self-weight, using the principle of virtual work and thrust line analysis. Depending on the angle of settlement and the slenderness of the arch and the abutments, the study identifies the main hinging failure mechanisms where the hinge configurations depend mainly on the angle of the settlement and the slenderness of the arch. An extensive analysis shows the different possible collapse mechanisms of masonry buttressed arches with different type of support settlements.

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Failure analysis of masonry arch bridges subject to local pier scour

Cited by 94 publications

References 49 publications

Modal properties variation and collapse assessment of masonry arch bridges under scour action

Modal properties variation and collapse assessment of masonry arch bridges under scour action

Collapse displacements of masonry arch with geometrical uncertainties on spreading supports

Collapse Mechanisms of Masonry Buttressed With Settled Support

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