Influence of backfill on the capacity of masonry arch bridges

Callaway, Phillip Arthur; Gilbert, Matthew; Smith, Colin C.

doi:10.1680/bren.11.00038

Cited by 37 publications

(24 citation statements)

References 8 publications

(12 reference statements)

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“…It effects the most how many connections crack which effects the failure mechanism. Compared to other similar researches [11,12,14,22] the focus of this project was rather on the behaviour of the structural elements than the determination of the global system between the displacements and the loads.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore these effects have to be considered in order to get a result that best models the behaviour of the masonry arch. Currently the soil-structure interaction is in the focus of research [11,12]. However, our aim was to eliminate the complex effect of the arch-backfill interaction phenomena, therefore two symmetrically placed concentrated forces were chosen as loads (Fig.…”

Section: Loadingmentioning

confidence: 99%

“…With the help of the small scale experiments the general behaviour of each structural element and connection can be better understood. Previous studies dealt with real and small scale laboratory models and their numerical analyses with rigid-block method [10,11]; or with FEM [12,13] and with DEM [14]. Prior to the laboratory experiments preliminary computer analyses are advised, since these computer-derived models help to design the experiments and allow a better understanding of failure mechanisms.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Testing of a Small-Scale Stone Masonry Arch

Bögöly

Görög

2015

Period. Polytech. Civil Eng.

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IntroductionMaintenance and restoration are common problem of historical stone structures. There are more than 1500 stone masonry arch bridges in Hungary which were built primarily in the 18th and 19th centuries [1]. Since the condition of most bridges aggravated and the traffic loads have increased significantly, the verification of the stability and the calculation of the load-bearing capacity of these bridges are required. Thus several Hungarian stone masonry arch bridges were investigated in the past few years [2-9]. It has been found that it is difficult to determine adequate input parameters for the numerical modelling from the in situ tests even for simple methods such as thrust line analysis. Naturally, the more complex methods require more precise input parameters. Nonetheless, the results of these more complex models describe better the behaviour of the masonry vaults. All things considered, great accuracy is expected from the numerical models, though it is not attained in case of practical applications. In general, it is very difficult to obtain the input parameters which can modify the results significantly. Therefore it is important to determine the scale of these effects and get to know their behaviour better by means of laboratory and numerical experiments.Within the masonry vaults predominantly compression, and in a smaller extent shear and friction occur from the external loads. The main point in design of arch geometries is to allow the smallest tension to occur, since the connections of real masonry arches usually do not resist high tensions. If a vault is capable of bearing a significant tensile stress, then it is a continuum shell rather than a masonry shell. Thus the bonding strength of the connections influences the behaviour of the arches significantly. In case of small scale laboratory experiments the bonding strength has a more important influence on the stability of the structure. As a consequence, this parameter was analysed by means of numerical modelling.The aim of this paper is to provide information about the required parameters for the analysis of the behaviour of stone arches by means of experiments. To increase the reliability of models and to have a better accuracy of the input parameters scale laboratory experiments are required with the combination

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Section: Discussionmentioning

confidence: 99%

Section: Loadingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Testing of a Small-Scale Stone Masonry Arch

Bögöly

Görög

2015

Period. Polytech. Civil Eng.

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“…PIV techniques (Particle Image Velocimetry), typically used in fluid dynamics experiments to measure the flow field, are able to give the instantaneous velocity field. PIV has been used for arch bridges (Callaway et al, 2012) for monitoring the movements of the fill during the load tests. The primary limit is the need of unconventional instruments, together with complex mathematical solvers, producing high costs and sophisticated experimental phases.…”

Section: Digital Cameramentioning

confidence: 99%

An Integrated Monitoring System Through 3d Laser Scanner And Traditional Instruments for Load Test on Arch Bridge

Pera

Ferrando

2017

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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CommissionKEY WORDS: Integrated monitoring system, load test, laser scanner, LVDT, masonry arch bridge ABSTRACT:The experimental campaign represents an example of how the careful design of the different test phases and the choice of the needed instrumentation are fundamental aspects to obtain a proper interpretation of the results, for future application on the real structures. Additionally, the present work represents a successful example of a combined monitoring system, integrating the traditional and innovative technical instrumentation for loading tests and geomatics survey techniques. The monitoring system has been designed with the aim of defining the load carrying capacity of a masonry arch bridge scaled model and to test the performances of a new retrofitting method. In particular, two different configuration have been considered: a first one with isolated arch and a second one with gravel fill on the arch.

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“…Since traffic, with the related loads, has increased significantly, in many cases the verification of their stability and load-bearing capacity has become necessary. Several research branches deal with the analysis of masonry arches; Gilbert and Melbourne (1994), Giordano et al (2002), Gubányi-Kléber and Vásárhelyi (2004), Cavicchi and Gambarotta (2006), Orbán (2006), and Callaway et al (2012) provide some examples. In the past few years several historical stone bridges, mostly in North Hungary, were also investigated by the Department of Building Materials and Engineering Geology.…”

Section: Introductionmentioning

confidence: 99%

Dimension stones of the North Hungarian masonry arch bridges

Bögöly

Török

Görög

2015

Central European Geology

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Stone masonry arch bridges in North Hungary represent cultural heritage values. For the maintenance and preservation of these bridges detailed mapping of lithologies and weathering forms are required. The purpose of this paper is to present the identified lithotypes, their conditions (weathering grade) and their petrophysical properties by using in situ lithological mapping, documentation of weathering forms, non-destructive tests and laboratory analyses. Furthermore these analyses demonstrate the difficulties of characterization and diagnostics of the historical construction materials. Additionally the results of condition assessments and the properties of the four different dimension stones from four different sites provide examples for the large dissimilarities regarding the strength parameters. The above-listed parameters are required as input data for stability calculations and modeling of these structures.

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Influence of backfill on the capacity of masonry arch bridges

Cited by 37 publications

References 8 publications

Numerical Testing of a Small-Scale Stone Masonry Arch

Numerical Testing of a Small-Scale Stone Masonry Arch

An Integrated Monitoring System Through 3d Laser Scanner And Traditional Instruments for Load Test on Arch Bridge

Dimension stones of the North Hungarian masonry arch bridges

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