Investigation on Similarity between Dynamic Behavior of a Reduced-Scale One Span Historical Masonry Arch Bridge Model and Prototype Bridge

Experimental investigations of large and complex structural systems can be carried out by reduced-scale models in terms of convenience, time-saving and economical. This can be applied to different fields of study such as vibration, impact and explosion problems in structural engineering and allows reliable analysis to understand the static and dynamic behavior of real structures called a prototype. This study aims that a 1/3 reduced-scale model is created in the laboratory environment considering similitude requirements by selecting a single span historical masonry arch bridge as a prototype structure. For this purpose, the Operational Modal Analysis (OMA) Technique is utilized for experimental study to determine modal parameters of the prototype and model bridges. The similarity of the dynamic behavior of the reduced-scale bridge model and prototype are investigated. The analysis of the similarity in the dynamic behavior of the prototype and model bridge consists of comparing the natural frequencies and mode shapes by utilizing the modal assurance criterion (MAC) corresponding to the translational, bending and torsional modes. As a result of the study, it is concluded that the dynamic behavior of the reduced-scale bridge model is similar to the dynamic behavior of the prototype bridge.

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Modal identification of a reduced-scale masonry arch bridge with experimental measurements and finite element method

Challenge Journal of Structural Mechanics ◽

10.20528/cjsmec.2017.06.012 ◽

2017 ◽

Vol 3 (3) ◽

pp. 108

Author(s):

Emre Alpaslan ◽

Burcu Dinç ◽

Kemal Hacıefendioğlu ◽

Gökhan Demir ◽

Olgun Köksal

Keyword(s):

Finite Element ◽

Model Calibration ◽

Modal Parameters ◽

Fe Model ◽

Masonry Arch ◽

Arch Bridge ◽

Bridge Model ◽

Historical Masonry ◽

Reduced Scale ◽

Masonry Arch Bridge

This study aims to investigate modal parameters such as mode shapes, natural frequencies and damping ratios of a reduced scale one-span historical masonry arch bridge constructed in laboratory conditions by performing numerical and experimental analysis. Sarp Dere historical masonry bridge, in Ordu, Ulubey, has 15.5m in length and 4.75m in width was chosen as a prototype model. The reduced-scale bridge model and structural details were carried out in the scale of 1:12.5. Operational Modal Analysis (OMA) technique was used for experimental study. The experimental modal parameters of the bridge model were figured out by using Enhanced Frequency Domain Decomposition (EFDD). ANSYS software was used to create 3D finite element (FE) model and to expose the analytical modal parameters of the reduced-scaled bridge model. Moreover, FE model of the reduced-scale bridge model was calibrated based on the experimental results by using the Response Surface based FE model calibration technique to obtain more accurate results. The analysis results of experimental, initial and calibrated FE model were compared. It is noted that there are significant differences between the modal parameters obtained from experimental and initial FE model. Model calibration techniques are beneficial to get a more reasonable FE model.

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Effect of Cohesive Contact of Backfill with Arch and Spandrel Walls of a Historical Masonry Arch Bridge on Seismic Response

Periodica Polytechnica Civil Engineering ◽

10.3311/ppci.14198 ◽

2019 ◽

Author(s):

Emin Hokelekli

Keyword(s):

Seismic Analysis ◽

Time History ◽

Material Model ◽

Masonry Arch ◽

Arch Bridge ◽

Non Linear ◽

Out Of Plane ◽

Historical Masonry ◽

Masonry Arch Bridge ◽

East West

Historical masonry bridges generally consist of arches, spandrels walls, backfills, piers and foundations. Under the effects such as earthquake, flood and wind, the most vulnerable structural elements of bridges against out-of-plane seismic motions are spandrel walls. Increasing length and height of spandrel walls increases the vulnerability of the bridge under loads in vertical and transverse directions. The aim of this research is to examine the in-plane and out-of-plane non-linear structural responses of the spandrel walls of a historical masonry bridge. For this purpose, a historical masonry arch bridge with built in 1787 in Bartın-Turkey was chosen as the subject structure. The 3D finite element model and nonlinear seismic analyses of the bridge were performed with ABAQUS. Initially, the backfill-spandrels and backfill-arch interfaces of the bridge were modeled with and without cohesive contact. The non-linear material responses of the spandrel walls and the arch units were defined using Concrete Damage Plasticity material model and those of the backfill unit were defined with Mohr-Coulomb material model. The east-west component of 17 August 1999 Kocaeli Earthquake’s acceleration records was used in the analyses. The east-west acceleration component was applied on the bridge in-plane and out-of-plane directions during the time-history non-linear seismic analysis of the bridge. The results obtained from the analyses with and without the consideration of cohesive contact were compared to evaluate the seismic responses of the spandrel walls. As a result, cohesive interface behavior was found to significantly affect the spandrel wall response under in- plane and out-of-plane seismic forces.

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Experimental and Numerical Analysis of a Two-Span Model Masonry Arch Bridge Subjected to Pier Scour

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.133-134.301 ◽

2010 ◽

Vol 133-134 ◽

pp. 301-306 ◽

Cited By ~ 1

Author(s):

Alberto Carpinteri ◽

Alessandro de Stefano ◽

Stefano Invernizzi ◽

Gianluca Ruocci ◽

Giuseppe Lacidogna ◽

...

Keyword(s):

Acoustic Emissions ◽

Non Destructive Testing ◽

Destructive Testing ◽

Masonry Arch ◽

Scaled Model ◽

Pier Scour ◽

Arch Bridge ◽

Bridge Model ◽

Non Destructive ◽

Masonry Arch Bridge

A scaled model of a two-span masonry arch bridge has been built in order to investigate the effect of the central pile settlement due to riverbank erosion. The bridge model has been equipped with different Non Destructive Testing (NDT) instruments and subjected to incremental settlement of the pier. The evolution of the pier scour has been investigated experimentally by means of a hydraulic model and reproduced accordingly. The numerical interpretation of damage, carried out by finite element analyses, has been compared with the results of the Acoustic Emissions (AE) monitoring. Several ultrasonic emissions have been detected and main damage source areas have been localized.

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