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Seismic sensitivity analysis of Musa Palas historic masonry arch bridge by Tornado diagram

Seismic sensitivity analysis of Musa Palas historic masonry arch bridge by Tornado diagram Historic arch bridges have good gravitational load-bearing capacity. But they are usually vulnerable to seismic loads. Seismic vulnerability analysis and structural behavior assessment of this building requires information on the materials used in the bridge. Due to the limitation of destructive and semi-destructive tests on this constructions and also less information about internal materials of historic bridges, it is necessary to consider the uncertainties in the of bridge material properties in the seismic analysis of the historic arch bridge. In this research, the Tornado diagram is utilized to sensitivity analysis due to dispersion of material properties. The seismic sensitivity analysis of the Musa Palas Arch bridge was performed as a case study. The ANSYS finite element software has been used for structural modeling and analysis. The variable parameters including elasticity modulus and density are considered for each of the main components of the bridge. The El Centro earthquake record was utilized to seismic loading in both of the river stream and cross stream directions. The linear elastic behavior of the masonry materials is adopted in the dynamic analyzes. The out of plane results, include stresses and displacements are more critical than in-plane ones. The results showed that both variable parameters are effective in the structural responses. The elasticity modulus of bridge backfill materials is the most effective variable in maximum compression stress and maximum horizontal deflection. Also, density of infilled material is the most effective variable in maximum tensile stress. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Building Pathology and Rehabilitation Springer Journals

Seismic sensitivity analysis of Musa Palas historic masonry arch bridge by Tornado diagram

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References (18)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2022
ISSN
2365-3159
eISSN
2365-3167
DOI
10.1007/s41024-022-00215-9
Publisher site
See Article on Publisher Site

Abstract

Historic arch bridges have good gravitational load-bearing capacity. But they are usually vulnerable to seismic loads. Seismic vulnerability analysis and structural behavior assessment of this building requires information on the materials used in the bridge. Due to the limitation of destructive and semi-destructive tests on this constructions and also less information about internal materials of historic bridges, it is necessary to consider the uncertainties in the of bridge material properties in the seismic analysis of the historic arch bridge. In this research, the Tornado diagram is utilized to sensitivity analysis due to dispersion of material properties. The seismic sensitivity analysis of the Musa Palas Arch bridge was performed as a case study. The ANSYS finite element software has been used for structural modeling and analysis. The variable parameters including elasticity modulus and density are considered for each of the main components of the bridge. The El Centro earthquake record was utilized to seismic loading in both of the river stream and cross stream directions. The linear elastic behavior of the masonry materials is adopted in the dynamic analyzes. The out of plane results, include stresses and displacements are more critical than in-plane ones. The results showed that both variable parameters are effective in the structural responses. The elasticity modulus of bridge backfill materials is the most effective variable in maximum compression stress and maximum horizontal deflection. Also, density of infilled material is the most effective variable in maximum tensile stress.

Journal

Journal of Building Pathology and Rehabilitation – Springer Journals

Published: Dec 1, 2022

Keywords: Sensitivity analysis; Finite element method; Masonry arch bridge; Time response analysis; Tornado diagram

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