Three-Dimensional Limit Analysis of Dry-Joint Masonry Walls using Rigid Block Modelling

2013 ◽  
Author(s):  
F. Portioli ◽  
C. Casapulla ◽  
L. Cascini ◽  
R. Landolfo
Keyword(s):  
Limit Analysis ◽  
Three Dimensional ◽  
Masonry Walls ◽  
Rigid Block

scholarly journals Force-Based Seismic Evaluation of Retrofitting Interventions of Historic Masonry Castles by 3D Rigid Block Limit Analysis

2020 ◽  
Vol 10 (15) ◽  
pp. 5035
Author(s):  
Lucrezia Cascini ◽  
Giuseppe Brando ◽  
Francesco P. A. Portioli ◽  
Morena Rita Forgione ◽  
Claudio Mazzanti ◽  
...  
Keyword(s):  
Limit Analysis ◽  
Failure Modes ◽  
Three Dimensional ◽  
Historical Analysis ◽  
Quantitative Measure ◽  
Rigid Block ◽  
Seismic Evaluation ◽  
Seismic Capacity ◽  
Seismic Safety ◽  
Historic Masonry

This paper deals with the force-based assessment of collapse mechanisms and strengthening interventions of the historic masonry castle “Bussi sul Tirino” (Abruzzi, Italy) using rigid block limit analysis (RBLA). The structure, which is a fortified palace dating back to the 11th century, has experienced severe earthquakes over the centuries and was hit once again in 2009 by the L’Aquila earthquake. Based on the historical analysis and the results of in situ investigations, a spatial rigid block model of an entire structural unit was generated using the in-house software LiABlock_3D. The software is a MATLAB® based tool for three-dimensional RBLA, which provides as outputs collapse failure modes and collapse load multipliers. In addition, a specific routine was developed for the purpose of the study to compute the participating mass ratio and the spectral acceleration that activated the failure mechanisms. The results of the numerical analysis were used to address three different retrofitting interventions, based on the use of connection elements and ties that, according to the minimum intervention principle, progressively enhanced the seismic capacity. Comparisons in terms of seismic safety indices are finally provided in order to give a quantitative measure of the effectiveness of the adopted retrofitting strategies.

Limit analysis of masonry walls by rigid block modelling with cracking units and cohesive joints using linear programming

2013 ◽  
Vol 57 ◽  
pp. 232-247 ◽  
Author(s):  
Francesco Portioli ◽  
Lucrezia Cascini ◽  
Claudia Casapulla ◽  
Mario D'Aniello
Keyword(s):  
Linear Programming ◽  
Limit Analysis ◽  
Masonry Walls ◽  
Rigid Block

Three-dimensional face stability analysis of shallow tunnels using numerical limit analysis and material point method

2021 ◽  
Vol 112 ◽  
pp. 103904
Author(s):  
Fabricio Fernández ◽  
Jhonatan E.G. Rojas ◽  
Eurípedes A. Vargas ◽  
Raquel Q. Velloso ◽  
Daniel Dias
Keyword(s):  
Stability Analysis ◽  
Limit Analysis ◽  
Three Dimensional ◽  
Material Point Method ◽  
Material Point ◽  
Point Method ◽  
Face Stability ◽  
Shallow Tunnels ◽  
Dimensional Face

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
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