Location
Cork Institute of Technology, Cork, Ireland
Event Website
https://event.ceri2020.exordo.com/
Start Date
27-8-2020 11:45 AM
End Date
27-8-2020 1:00 PM
Description
Masonry arch bridges are a significant part of the transport network system in Ireland. Therefore, it is essential that we maintain the existing masonry bridge stock as a valuable asset and protect these bridges from a heritage viewpoint. The increased structural demands placed upon these bridges coupled with more sophisticated analysis methods have required and enabled a greater understanding of the response of masonry arch bridges to ever increasing traffic loading. When loaded, the structure acts in compression and the arched configuration enables the transmission of loads through the individual masonry units to the supporting piers or abutments. The stability of the arch primarily depends on the arch shape and the thickness of the arch barrel. However, compression enhancement can be achieved through the backfill material surrounding the arch, which also serves to distribute loads and to resist adverse tension inducing arch movements generated by the arch thrust. Selectively varying the quantity and constitutive parameters of the backfill is known to enhance arch capacity. In the past, structural backing was included to enhance the quality of arch construction and, where present, is generally located to the back of the abutments and to varying extents over the arch haunches. However, little is known of the contribution of structural backing to arch strength.
Recommended Citation
Kerr, Thomas and O'Flaherty, Tomás, "A Numerical Analysis of Stone Masonry Arch Bridges and Structural Backing" (2020). Civil Engineering Research in Ireland 2020. 2.
https://sword.cit.ie/ceri/2020/2/2
Included in
Civil Engineering Commons, Construction Engineering and Management Commons, Environmental Engineering Commons, Geotechnical Engineering Commons, Hydraulic Engineering Commons, Structural Engineering Commons, Transportation Engineering Commons
A Numerical Analysis of Stone Masonry Arch Bridges and Structural Backing
Cork Institute of Technology, Cork, Ireland
Masonry arch bridges are a significant part of the transport network system in Ireland. Therefore, it is essential that we maintain the existing masonry bridge stock as a valuable asset and protect these bridges from a heritage viewpoint. The increased structural demands placed upon these bridges coupled with more sophisticated analysis methods have required and enabled a greater understanding of the response of masonry arch bridges to ever increasing traffic loading. When loaded, the structure acts in compression and the arched configuration enables the transmission of loads through the individual masonry units to the supporting piers or abutments. The stability of the arch primarily depends on the arch shape and the thickness of the arch barrel. However, compression enhancement can be achieved through the backfill material surrounding the arch, which also serves to distribute loads and to resist adverse tension inducing arch movements generated by the arch thrust. Selectively varying the quantity and constitutive parameters of the backfill is known to enhance arch capacity. In the past, structural backing was included to enhance the quality of arch construction and, where present, is generally located to the back of the abutments and to varying extents over the arch haunches. However, little is known of the contribution of structural backing to arch strength.
https://sword.cit.ie/ceri/2020/2/2
