Experimental and numerical evaluation of structural dynamic behavior of Rialto Bridge in Venice

This paper presents part of the diagnostic activities performed for the subsequent major restoration work of the Rialto Bridge in Venice. The document analysis, the visual inspection, and the destructive tests on extracted masonry samples have proved to be the first important steps for an initial st...

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Bibliographic Details
Published in:Journal of civil structural health monitoring 2017-09, Vol.7 (4), p.557-572
Main Authors: Boscato, G., Dal Cin, A.
Format: Article
Language:English
Subjects:
Bridge inspection
Civil Engineering
Control
Data acquisition
Destructive testing
Diagnostic systems
Dynamic tests
Dynamical Systems
Engineering
Finite element method
Masonry
Mathematical analysis
Mathematical models
Measurement Science and Instrumentation
Modal identification
Original Paper
Pedestrian traffic flow
Restoration
Vibration
Vibration damping
Vibration measurement
Vibration mode
Vibration monitoring
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Summary:This paper presents part of the diagnostic activities performed for the subsequent major restoration work of the Rialto Bridge in Venice. The document analysis, the visual inspection, and the destructive tests on extracted masonry samples have proved to be the first important steps for an initial structural assessment and for the characterization of the materials. Moreover, the tensile stresses of the tie-rods, which connect the two sides of the shops structures, have been measured by means of dynamic tests. To study the local and the global dynamic behavior of the bridge structure and its overlying shops structures, a dynamic monitoring was performed. The data were acquired through ambient vibrations test to measure the dynamical properties (mode of vibration, frequencies, displacements, and damping ratios) of the historical construction using a modal identification of output-only systems. The main natural vibration sources were pedestrian traffic, wind, and wave-motion of the Grand Canal. Modal identification was carried out through poly-reference least square complex frequency-domain (pLSFC) estimator. Finally, of the variations of the boundary conditions and the structural interaction between the bridge and the shops, structures on the modal shapes are evaluated through a finite element model. The global structural health monitoring was carried out to define the real dynamic behavior of this important bridge.
ISSN:2190-5452
2190-5479
DOI:10.1007/s13349-017-0242-7