- Simplified Assessment of Railway Masonry Bridges Seismic Capacity
- G. Tecchio ; P. Zampieri ; F. da Porto ; C. Modena ; A. Prota ; G Manfredi
- Book Title / Journal: Proceedings of the 15th World Conference on Earthquake Engineering, Lisbon, Portugal
- Year: 2012 , Volume: , Series:
- Earthquake engineering
- Keywords: Masonry arch bridges ; seismic assessment ; Limit state analysis
- Description
- Masonry arch bridges represent the greatest portion of all the bridges in use in the Italian railway network. The
typological characteristics of these structures were identified on a large stock of 380 bridges located in high
seismicity areas, subdividing them into a set of homogeneous classes. Subsequently a parametrical analysis was performed for each class, in order to calculate the seismic capacity of
the bridges: appropriate ranges for geometrical and mechanical parameters, i.e. span length, arch thickness, spantorise ratio, pier height, etc. were considered, and the limit horizontal load multiplier was calculated for each
relevant collapse mechanism. Finally, envelope curves representing the seismic capacity expressed in terms of limit horizontal acceleration were derived, the input data of which are only easily detectable geometric parameters. These curves can be used for a simplified vulnerability assessment of railway masonry arch bridges, and for prioritizing further investigations and retrofit interventions.
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- Long term compressive testing of masonry – test procedure and practical experience.
- L. Binda ; L Schueremans ; E. Verstrynge ; S. Ignoul ; D.V. Oliveira ; P.B. Lourenço ; C. Modena
- Book Title / Journal: In D. D’Ayala & E. Fodde (eds.), Structural Analysis of Historic Construction, Taylor & Francis Group, London,
- Year: 2008 , Volume: , Series:
- Structure types ; Masonry Structures
- Description
- The sudden collapses in Italy (Civic Tower of Pavia 1989, Noto Cathedral, 1996) initiated the research into long term behaviour of historical masonry structures. Last decade, international ad hoc collaboration was established within several research inatitutes in Europe. The testing on masonry samples identified the creep behaviour as a possible cause of the collapse of historical masonry buildings. Secondly, research focused on the study of the factors affecting creep (rate of loading, stress level,..) and efforts were made to set up the most suitable testing procedures to understand the phenomenon. The gained insight in the long term behaviour and its description by means of rheological models, is validated mainly by means of long term testing, identifying significant parameters (strain rate of secondary creep phase, damage parameters…).
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- A Parametric Study of the Hanger Arrangement in Arch Bridges
- A. De Zotti ; C. Pellegrino ; C. Modena
- ARCH'07, 5th International Conference on Arch Bridges, Multicomp, Lda Publishers, Madeira, pages 475-482
- Book Title / Journal:
- Year: 2007 , Volume: , Series:
- Bridge management ; Bridges
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- Seismic Vulnerability Methods for Masonry Buildings in Historical Centres: Validation and Application for Prediction Analyses and Intervention Proposals
- M.R. Valuzzi ; G. Cardani ; L. Binda ; C. Modena
- Book Title / Journal: Proceedings of the 13th World Conference on Earthquake Engineering Vancouver, B.C., Canada
- Year: 2004 , Volume: , Series:
- Earthquake engineering
- Keywords: seismic vulnerability methods ; Masonry Structures ; historical centres
- Description
- A valid approach for the limit analysis of existing masonry buildings in seismic areas concerns the application of single or combined kinematics models involving the equilibrium of structural macroelements. They can be more reliable in describing the real structural behaviour than common equivalent static procedures, based on the “box” behaviour of the structure and on the elasto-plastic behaviour of the
masonry. The main results of the application of different procedures for the static analysis of masonry buildings in seismic area are discussed in the paper. Urban centres suffering different levels of damage and different typologies of buildings are compared.
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- Reinforced and Rectified Clay Blocks Masonry
- C. Modena ; F. da Porto ; M.R. Valluzzi
- 6th National Congress of Seismology and Earthquake Engineering and International Workshop ?Masonry Walls and Earthquakes? (SISMICA 2004), p. 155-178
- Book Title / Journal:
- Year: 2004 , Volume: , Series:
- Structure types ; Masonry Structures
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