scholarly journals Numerical investigation of non-linear equivalent-frame models for regular masonry walls

2018 ◽  
Vol 173 ◽  
pp. 512-529 ◽  
Author(s):  
Rossella Siano ◽  
Pere Roca ◽  
Guido Camata ◽  
Luca Pelà ◽  
Vincenzo Sepe ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Masonry Walls ◽  
Non Linear ◽  
Equivalent Frame

Non Linear Response of Masonry Wall Structures Subjected to Cyclic and Dynamic Loading

2010 ◽  
Vol 133-134 ◽  
pp. 747-752
Author(s):  
Fernando Sima ◽  
Pere Roca ◽  
Climent Molins
Keyword(s):  
Masonry Wall ◽  
Masonry Walls ◽  
Masonry Structures ◽  
Matrix Formulation ◽  
Wall Structures ◽  
Non Linear ◽  
Equivalent Frame ◽  
Generalized Matrix ◽  
Frame Systems ◽  
Solid Walls

A method for non-linear dynamic analysis of wall masonry structures is presented. The method takes advantage of a Generalized Matrix Formulation (GMF) for the serviceability and ultimate analysis of structures composed of arches and/or masonry walls, in which open and solid walls are described as equivalent frame systems. This formulation has been complemented with a cyclic constitutive model and an algorithm for the integration of the equation of motion, resulting in a numerically efficient method for non-linear analysis in time domain of complex masonry systems.

Validation of non-linear equivalent-frame models for irregular masonry walls

2022 ◽  
Vol 253 ◽  
pp. 113755
Author(s):  
Guido Camata ◽  
Corrado Marano ◽  
Vincenzo Sepe ◽  
Enrico Spacone ◽  
Rossella Siano ◽  
...  
Keyword(s):  
Masonry Walls ◽  
Non Linear ◽  
Equivalent Frame

Reducing Seismic out of Plane Vulnerability of Masonry Church Façades through Optimization of Capacity Spectrum by Tie Rods

2019 ◽  
Vol 817 ◽  
pp. 325-333
Author(s):  
Simonetta Baraccani ◽  
Giorgio Dan ◽  
Angelo Di Tommaso ◽  
Tomaso Trombetti
Keyword(s):  
Masonry Walls ◽  
Collapse Mechanisms ◽  
Capacity Spectrum ◽  
Construction Techniques ◽  
Non Linear ◽  
Out Of Plane ◽  
Recent Earthquakes ◽  
Discrete Element Methods ◽  
Tie Rods ◽  
The Church

The analyses of the structural damages detected on the Italian churches after the recent earthquakes (Emilia 2012, Umbria-Marche 2016) highlighted the high vulnerability to the overturning of the façades. The façades collapse mechanisms are strongly dependent on the connection details between orthogonal masonry walls, the windows, the construction techniques and the possible restraining horizontal elements, such as tie-beams, bi-lateral connected roof, etc. Several studies focus on the evaluation of vulnerability of the church façades using different approaches, from global analyses (FEM and /or Discrete Element Methods) of the entire building, to local analyses (linear and non-linear kinematic approaches). The aims of the present paper is to use the method based on capacity spectra to evaluate the vulnerability of the church facades and the optimization of specific devices as tie-rods to improve their seismic behavior. The non-linear approach is now accepted by several standards regarding the evaluation of risks of collapse mechanisms for masonry walls of the facades. Appropriate devices have been considered in order to calibrate the capacity curve and to optimize the interventions. The out of plane rotation of blocks can be modified with various elasto-perfect-plastic tendons with appropriate retentions (while composite materials could be used to preserve integrity of blocks). The tendons can be allocated in proper location and the length of each calibrated to best determine their stiffness. This procedure have been here applied to the study of the façade of Aula Magna S. Lucia of the Bologna University, considering also the problem of the interaction with the structure of the roof.

Non-linear continuous model for three leaf masonry walls

2020 ◽  
Vol 244 ◽  
pp. 118356 ◽  
Author(s):  
Claudia Brito de Carvalho Bello ◽  
Giosuè Boscato ◽  
Emilio Meroi ◽  
Antonella Cecchi
Keyword(s):  
Continuous Model ◽  
Masonry Walls ◽  
Non Linear
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