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Assessment methods for load carrying capacity of brickwork or natural stone masonry vaulted arch bridges
The load carrying capability of masonry arch bridges can be determined using a variety of analysis techniques. By far the fastest assessment is made by the Mexemethod, as a few equations render a conservative value of the load carrying capacity. A more refined method is rigid block analysis. This method also allows to account for deteriorated areas. However, the failure mechanism cannot include 3-D effects in wider vaulted arches. Therefore, FE-analysis may be used, provided nonlinear material and geometric behaviour is included. For the material nonlinearity, the laws of MohrCoulomb or alternatively Drücker-Prager are closest to real behaviour. Finally, those parts where failure occurs, can be analysed more in detail by simulating every element of the masonry, meaning the natural stone blocks or bricks and the mortar. To illustrate these various methods, examples of vaulted arches are taken. These include a bridge across river Senne in Brussels, the covering of river Scheldt in the historic centre of Ghent, the Devil’s bridge across river Arda near Dyadovtsi in Bulgaria and the Candia viaduct across river Sesia in Northern Italy
Assessment methods for load carrying capacity of brickwork or natural stone masonry vaulted arch bridges
The load carrying capability of masonry arch bridges can be determined using a variety of analysis techniques. By far the fastest assessment is made by the Mexemethod, as a few equations render a conservative value of the load carrying capacity. A more refined method is rigid block analysis. This method also allows to account for deteriorated areas. However, the failure mechanism cannot include 3-D effects in wider vaulted arches. Therefore, FE-analysis may be used, provided nonlinear material and geometric behaviour is included. For the material nonlinearity, the laws of MohrCoulomb or alternatively Drücker-Prager are closest to real behaviour. Finally, those parts where failure occurs, can be analysed more in detail by simulating every element of the masonry, meaning the natural stone blocks or bricks and the mortar. To illustrate these various methods, examples of vaulted arches are taken. These include a bridge across river Senne in Brussels, the covering of river Scheldt in the historic centre of Ghent, the Devil’s bridge across river Arda near Dyadovtsi in Bulgaria and the Candia viaduct across river Sesia in Northern Italy
Assessment methods for load carrying capacity of brickwork or natural stone masonry vaulted arch bridges
Van Bogaert, Philippe (author)
2023-01-01
XXIII International Scientific Conference VSU' 2023 Conference Proceedings Volume I ; ISSN: 1314-071X
Conference paper
Electronic Resource
English
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