Seismic analysis of a masonry arch bridge using multiple methodologies

Gönen, Semih; Soyöz, Serdar

doi:10.1016/j.engstruct.2020.111354

Cited by 65 publications

(34 citation statements)

References 47 publications

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“…Nine ground motions (6 horizontal and 3 vertical) were matched to the determined site-specific design spectrum. Vertical components of the earthquakes were also included simultaneously with horizontal components, as damage mechanism of bridges were reported to be influenced by combined loading [44]. The acceleration-time records of the utilized ground motions in two perpendicular directions, scaled to the mentioned hazard level, are shown in Figure 8.…”

Section: Materials Characterization and Seismicitymentioning

confidence: 99%

Simplified Approach for Seismic Performance Assessment of Dry-Joint Masonry Arch Bridges

Demirel

Aldemir

2021

Buildings

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The seismic performance assessment of dry-joint masonry arches is challenging because of their unique structural characteristics. Widely used assessment methods developed for frame-type structures require the use of a material-dependent section response. In contrast, the response of a dry-joint arch is not dependent on the material capacity but characterized by the sustainment of stability, primarily depending on rigid body rotation or sliding motion at the interfaces between the adjacent voussoirs. A hybrid methodology, combining a simple finite element micro model with principles of limit analysis method, is proposed in this work for the seismic performance assessment of these structures. The nonlinearity is concentrated at interfaces of the model by means of shear and compression-only axial springs. Kinematic conditions yielding a possible collapse mechanism were traced at every step of the time history analysis by checking the failure of individual interfaces. The procedure is applied to an ancient dry-joint Roman arch bridge in close proximity to the North Anatolian fault subject to significant seismic risk. Along with the performance of the system in its current state, the effects of retrofitting measures were investigated in the scope of this study.

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Section: Materials Characterization and Seismicitymentioning

confidence: 99%

Simplified Approach for Seismic Performance Assessment of Dry-Joint Masonry Arch Bridges

Demirel

Aldemir

2021

Buildings

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“…The main issues include difficulty in defining an equivalent single degree of freedom system for the masonry bridge, that instead is a widely employed procedure for other classes of buildings [6], the selection of the most appropriate lateral load distribution, and the choice of the control point. For instance, in References [7,8], the seismic capacity of masonry bridges was evaluated by selecting both the top and center of mass as control nodes for the pushover analysis. Nonlinear dynamic analyses are certainly preferred when the aim is to accurately evaluate the seismic performances of the structures accounting for the interaction between the nonlinear damage and plastic mechanisms evolving during the earthquake and their dynamic response [9].…”

Section: Introductionmentioning

confidence: 99%

“…This method, although computationally expensive, has recently taken hold to study the complex dynamic behavior of masonry arch bridges, as this represents the most advanced deterministic analysis tool available. Usually, artificial or natural earthquake time histories are selected on the basis of the seismic characteristics of the specific site and its design response spectrum [3,7,10,11]. Moreover, first attempts to apply the Incremental Dynamic Analysis (IDA) to masonry bridges should be mentioned [7].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamic Analysis of a Masonry Arch Bridge Accounting for Damage Evolution

et al. 2021

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This study investigates the nonlinear dynamic response of the masonry bridge ‘Ponte delle Torri’ in Spoleto, aiming at assessing the seismic performance of the structure and evaluating the occurring damaging mechanisms. A 3D Finite Element (FE) macromechanical procedure implemented in the FE program FEAP is adopted to model the bridge. To reproduce the typical nonlinear microcracking process evolving in masonry material when subjected to external loads, an isotropic damage model is used. This is based on a scalar damage variable introduced in the stress-strain constitutive law and equally degrading all the components of the elastic constitutive operator. A nonlocal integral definition of the damage associated variable, that is the equivalent strain measure governing its evolution, is adopted to overcome the mesh dependency problems of the FE solution typically occurring in the presence of strain softening behavior. Based on the results of a recent study by some of the authors, a single equivalent pier is analyzed, whose geometry and boundary conditions are selected so that its response can provide useful information on the out-of-plane dynamic behavior of the overall bridge. To perform the seismic assessment, a set of recorded accelerograms is properly selected to simulate the seismic history of the Spoleto site. The nonlinear dynamic response of the structure is evaluated and monitored in terms of top displacement time history, evolution of the global damage index, and distribution of the damage variable. First, a set of analyses is performed by imposing the selected ground motions one by one on the initial undamaged configuration for the structure with the aim of emphasizing the damaging effects on its dynamic response. Then, the accelerograms are arranged in sequence to reproduce the seismic history of the site and analyze the influence of accumulated damage on the dynamic amplification of the response. A critical comparison of the bridge response to the sequence of accelerograms and the single records is made, and the interaction between the damaged structure dynamic response and the signal characteristic is highlighted, as well.

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“…In addition, three-dimensional FEM models [18][19][20] allow both a complete description of the bridge geometry and detailed constitutive models. Regarding the seismic assessment of masonry arch bridges, only a few studies are available today concern the procedure to evaluation of the safety of the bridge [21].…”

Section: Introductionmentioning

confidence: 99%

Seismic Vulnerability Analysis of the Historical Ss Filippo E Giacomo Masonry Arch Bridge in Ascoli Piceno (Italy)

Leoni¹,

Gara²,

Morici³

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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The bridge was built in 14th century and had undergone very complex vicissitudes related mainly to exceptional floods; it was partially rebuilt twice and other strengthening works were carried out over the time. The bridge, which is almost completely built with travertine blocks, has a total length of 146 m and follows a slightly curved path. Six arches, the main of which is semi-circular with span of 25 m and the others are lancet arches with span of about 8 m, support the carriageway that is about 8 m wide. The piers and abutments are founded on the bedrock and consequently some piers are deeply embedded in the sandy gravel deposit. A 3D numerical Finite Element Model has been developed integrating data available from the geometric survey and calibrating the mechanical parameters starting from experimental tests. The global seismic vulnerability of the bridge has been evaluated comparing the capacity curves of the bridge obtained by means a static nonlinear pushover analysis with the Italian Standard seismic demand. In addition, local vulnerability verifications of spandrel walls have been carried out by means a linear kinematic analysis.

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Seismic analysis of a masonry arch bridge using multiple methodologies

Cited by 65 publications

References 47 publications

Simplified Approach for Seismic Performance Assessment of Dry-Joint Masonry Arch Bridges

Simplified Approach for Seismic Performance Assessment of Dry-Joint Masonry Arch Bridges

Nonlinear Dynamic Analysis of a Masonry Arch Bridge Accounting for Damage Evolution

Seismic Vulnerability Analysis of the Historical Ss Filippo E Giacomo Masonry Arch Bridge in Ascoli Piceno (Italy)

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