Three-dimensional adaptive limit analysis of masonry arch bridges interacting with the backfill

2021 ◽  
Vol 248 ◽  
pp. 113189
Author(s):  
Tommaso Papa ◽  
Nicola Grillanda ◽  
Gabriele Milani
Keyword(s):  
Limit Analysis ◽  
Three Dimensional ◽  
Masonry Arch ◽  
Arch Bridges

scholarly journals Safety Assessment of Masonry Arch Bridges Considering the Fracturing Benefit

2020 ◽  
Vol 10 (10) ◽  
pp. 3490 ◽  
Author(s):  
Federico Accornero ◽  
Giuseppe Lacidogna
Keyword(s):  
Fracture Mechanics ◽  
Bearing Capacity ◽  
Limit Analysis ◽  
Life Assessment ◽  
Plastic Limit ◽  
Masonry Arch ◽  
Fracturing Process ◽  
Plastic Limit Analysis ◽  
Elastic Fracture ◽  
Arch Bridges

The evolutionary analysis of the fracturing process is an effective tool to assess of the structural bearing capacity of masonry arch bridges. Despite their plain basic assumptions, it must be remarked that elastic analysis and plastic or limit analysis can hardly be used to describe the response and predict damage for moderate or service load levels in masonry arch bridges. Therefore, a fracture mechanics-based analytical method with elastic-softening regime for masonry is suitable in order to study the global structural behaviour of arch bridges, highlighting how the arch thrust line is affected by crack formation, and the maximum admissible load evaluated by means of linear elastic fracture mechanics is larger than the load predicted by elasticity theory. Such an increment in terms of bearing capacity of the arch bridge can be defined “fracturing benefit”, and it is analogous to the “plastic benefit” of the plastic limit analysis. The fracturing process, which takes into account the fracture initiation and propagation in the masonry arch bulk, occurs before the set-in of the conditions established by means of the plastic limit analysis. In the present paper, the study of the elastic-fracture-plastic transitions is performed for three monumental masonry arch bridges with different shallowness and slenderness ratios. This application returns an accurate and effective whole service life assessment of masonry arch bridges, and more in general it can be suitable for a great number of historical masonry structures still having strategic or heritage importance in the infrastructure systems.

Evaluation of the vertical load capacity of masonry arch bridges strengthened with FRCM or SFRM by limit analysis

2020 ◽  
Vol 225 ◽  
pp. 111135
Author(s):  
Paolo Zampieri ◽  
Nicolò Simoncello ◽  
Jaime Gonzalez-Libreros ◽  
Carlo Pellegrino
Keyword(s):  
Limit Analysis ◽  
Load Capacity ◽  
Vertical Load ◽  
Masonry Arch ◽  
Arch Bridges

LIMIT ANALYSIS OF MASONRY ARCH BRIDGES THROUGH AN ADAPTIVE GA-NURBS UPPER-BOUND APPROACH

2020 ◽  
Vol 5 (4) ◽  
pp. 1
Author(s):  
Antonio Tralli ◽  
Gabriele Milani ◽  
Nicola Grillanda ◽  
Andrea Chiozzi
Keyword(s):  
Upper Bound ◽  
Limit Analysis ◽  
Masonry Arch ◽  
Arch Bridges

Limit Analysis of Masonry Arch Bridges Using Discontinuity Layout Optimization

2019 ◽  
pp. 307-314 ◽  
Author(s):  
Matthew Gilbert ◽  
John Valentino ◽  
Colin Smith ◽  
Tom Pritchard
Keyword(s):  
Limit Analysis ◽  
Layout Optimization ◽  
Masonry Arch ◽  
Arch Bridges

Limit analysis of masonry arch bridges through an adaptive GA-NURBS upper-bound approach

2020 ◽  
Vol 5 (4) ◽  
pp. 538
Author(s):  
Andrea Chiozzi ◽  
Nicola Grillanda ◽  
Gabriele Milani ◽  
Antonio Tralli
Keyword(s):  
Upper Bound ◽  
Limit Analysis ◽  
Masonry Arch ◽  
Arch Bridges
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