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A platform for research: civil engineering, architecture and urbanism
Spatial stochastic D-RBA and limit equilibrium analysis of unreinforced masonry pier-spandrel structures
https://orcid.org/0000-0002-7040-0734
https://orcid.org/0000-0002-9588-4552
https://orcid.org/0000-0002-1374-0732
Highlights Effect of material uncertainty in URM pier-spandrel systems is explored using D-RBA. Different in-plane collapse mechanisms of an pier-spandrel structure is presented. An automatic failure mode classification is implemented processing the D-RBA output. Further simplified solutions based on upper- and lower-bound theorems are discussed.
Abstract This study investigates the effect of spatially varying material properties on the in-plane seismic behaviour and capacity of an unreinforced pier-spandrel masonry system. The discontinuous nature of masonry is represented via a system of rigid blocks that can mechanically interact with each other along their boundaries. In the discontinuous modelling strategy, denoted as discrete rigid block analysis (D-RBA), deformations are lumped at the joints, and masonry units are replicated using two rigid blocks with a potential crack plane using the discrete element method (DEM). The obtained collapse mechanisms are automatically classified into two main categories via an algorithm processing the results of D-RBA. The adopted methodology offers a robust and time-efficient categorization of different collapse modes obtained from the computational model, which is required for better understanding the possible mechanisms developing in pier-spandrel structures and their occurrence rate. Accordingly, the most recurrent failure mechanisms are further investigated via upper- and lower-bound theorems of limit equilibrium analysis (LEA) by adopting an ad hoc coded optimization algorithm to ensure the solution's uniqueness. The results show that the DEM-based modelling approach provides a comprehensive understanding of the structural behaviour and capacity of pier-spandrel systems subjected to in-plane lateral loads. Further, the proposed probabilistic assessment workflow offers a broader perspective than deterministic analysis.
Spatial stochastic D-RBA and limit equilibrium analysis of unreinforced masonry pier-spandrel structures
https://orcid.org/0000-0002-7040-0734
https://orcid.org/0000-0002-9588-4552
https://orcid.org/0000-0002-1374-0732
Highlights Effect of material uncertainty in URM pier-spandrel systems is explored using D-RBA. Different in-plane collapse mechanisms of an pier-spandrel structure is presented. An automatic failure mode classification is implemented processing the D-RBA output. Further simplified solutions based on upper- and lower-bound theorems are discussed.
Abstract This study investigates the effect of spatially varying material properties on the in-plane seismic behaviour and capacity of an unreinforced pier-spandrel masonry system. The discontinuous nature of masonry is represented via a system of rigid blocks that can mechanically interact with each other along their boundaries. In the discontinuous modelling strategy, denoted as discrete rigid block analysis (D-RBA), deformations are lumped at the joints, and masonry units are replicated using two rigid blocks with a potential crack plane using the discrete element method (DEM). The obtained collapse mechanisms are automatically classified into two main categories via an algorithm processing the results of D-RBA. The adopted methodology offers a robust and time-efficient categorization of different collapse modes obtained from the computational model, which is required for better understanding the possible mechanisms developing in pier-spandrel structures and their occurrence rate. Accordingly, the most recurrent failure mechanisms are further investigated via upper- and lower-bound theorems of limit equilibrium analysis (LEA) by adopting an ad hoc coded optimization algorithm to ensure the solution's uniqueness. The results show that the DEM-based modelling approach provides a comprehensive understanding of the structural behaviour and capacity of pier-spandrel systems subjected to in-plane lateral loads. Further, the proposed probabilistic assessment workflow offers a broader perspective than deterministic analysis.
Spatial stochastic D-RBA and limit equilibrium analysis of unreinforced masonry pier-spandrel structures
https://orcid.org/0000-0002-7040-0734
https://orcid.org/0000-0002-9588-4552
https://orcid.org/0000-0002-1374-0732
Highlights Effect of material uncertainty in URM pier-spandrel systems is explored using D-RBA. Different in-plane collapse mechanisms of an pier-spandrel structure is presented. An automatic failure mode classification is implemented processing the D-RBA output. Further simplified solutions based on upper- and lower-bound theorems are discussed.
Abstract This study investigates the effect of spatially varying material properties on the in-plane seismic behaviour and capacity of an unreinforced pier-spandrel masonry system. The discontinuous nature of masonry is represented via a system of rigid blocks that can mechanically interact with each other along their boundaries. In the discontinuous modelling strategy, denoted as discrete rigid block analysis (D-RBA), deformations are lumped at the joints, and masonry units are replicated using two rigid blocks with a potential crack plane using the discrete element method (DEM). The obtained collapse mechanisms are automatically classified into two main categories via an algorithm processing the results of D-RBA. The adopted methodology offers a robust and time-efficient categorization of different collapse modes obtained from the computational model, which is required for better understanding the possible mechanisms developing in pier-spandrel structures and their occurrence rate. Accordingly, the most recurrent failure mechanisms are further investigated via upper- and lower-bound theorems of limit equilibrium analysis (LEA) by adopting an ad hoc coded optimization algorithm to ensure the solution's uniqueness. The results show that the DEM-based modelling approach provides a comprehensive understanding of the structural behaviour and capacity of pier-spandrel systems subjected to in-plane lateral loads. Further, the proposed probabilistic assessment workflow offers a broader perspective than deterministic analysis.
Spatial stochastic D-RBA and limit equilibrium analysis of unreinforced masonry pier-spandrel structures
Pulatsu, Bora (author) / Gonen, Semih (author) / Funari, Marco Francesco (author) / Parisi, Fulvio (author)
Engineering Structures ; 296
2023-09-12
Article (Journal)
Electronic Resource
English
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