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Dr. lucrezia cascini
University of Naples "Federico II", Department of Structures for Engineering and Architecture

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0 Software Architecture
0 collapse models
0 Seismic Analysis
0 limit analysis
0 Masonry Structures

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limit analysis
Masonry Structures

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Journal article
Published: 22 July 2020 in Applied Sciences
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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.

ACS Style

Lucrezia Cascini; Giuseppe Brando; Francesco P. A. Portioli; Morena Rita Forgione; Claudio Mazzanti; Marcello Vasta. Force-Based Seismic Evaluation of Retrofitting Interventions of Historic Masonry Castles by 3D Rigid Block Limit Analysis. Applied Sciences 2020, 10, 5035 .

AMA Style

Lucrezia Cascini, Giuseppe Brando, Francesco P. A. Portioli, Morena Rita Forgione, Claudio Mazzanti, Marcello Vasta. Force-Based Seismic Evaluation of Retrofitting Interventions of Historic Masonry Castles by 3D Rigid Block Limit Analysis. Applied Sciences. 2020; 10 (15):5035.

Chicago/Turabian Style

Lucrezia Cascini; Giuseppe Brando; Francesco P. A. Portioli; Morena Rita Forgione; Claudio Mazzanti; Marcello Vasta. 2020. "Force-Based Seismic Evaluation of Retrofitting Interventions of Historic Masonry Castles by 3D Rigid Block Limit Analysis." Applied Sciences 10, no. 15: 5035.

Journal article
Published: 13 June 2020 in Structures
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This paper presents an application of a simplified assessment approach to steel structures which takes into account sustainability requirements. The proposed approach is based on a time-dependent, multi-performance-based design methodology. The simplified procedure is organized in three main steps concerning the environmental conceptual design, the ordinary structural design and the life-cycle analysis devoted to defining service life scenarios in order to assess the structural, economic and environmental performances of structures during their entire life-cycle. Three different seismic-resistant steel structural typologies are designed for a multi-storey residential building and compared in terms of sustainability. Those comprise Moment Resisting Frames (MRF), Concentrically Braced Frames (CBF) with removable Chevron braces and Eccentrically Braced Frames (EBF) with removable shear links. The structural, environmental and economic performances of the three examined design options are assessed and compared in order to evaluate their sustainable potentialities and criticalities for two design scenarios, namely an ordinary condition characterized by an expected deterioration and an exceptional case in which a seismic event hits the structures during their service life.

ACS Style

Elvira Romano; Lucrezia Cascini; Mario D'Aniello; Francesco Portioli; Raffaele Landolfo. A simplified multi-performance approach to life-cycle assessment of steel structures. Structures 2020, 27, 371 -382.

AMA Style

Elvira Romano, Lucrezia Cascini, Mario D'Aniello, Francesco Portioli, Raffaele Landolfo. A simplified multi-performance approach to life-cycle assessment of steel structures. Structures. 2020; 27 ():371-382.

Chicago/Turabian Style

Elvira Romano; Lucrezia Cascini; Mario D'Aniello; Francesco Portioli; Raffaele Landolfo. 2020. "A simplified multi-performance approach to life-cycle assessment of steel structures." Structures 27, no. : 371-382.

Articles
Published: 05 September 2018 in International Journal of Architectural Heritage
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A rigid block model is proposed for collapse mechanism analysis of three-dimensional historic masonry structures subjected to point live loads, seismic-induced lateral loads and settlements. The model is made of polyhedral rigid blocks interacting at no-tension, frictional contact interfaces and can be used to represent complex assemblages and bond patterns. The formulation and the solution procedure of the underlying limit equilibrium analysis problem were implemented in LiABlock_3D, a MATLAB based tool with Graphical User Interface (GUI). The software was designed to import the geometric model from commercial Computer Aided Design (CAD) tools, thus allowing high flexibility of structural configurations and masonry patterns. The graphical interface is also used to define material properties as well as boundary and loading conditions. Numerical and experimental case studies from the literature were analyzed to show the ability of the model developed in predicting the collapse behavior of a variety of structural typologies. Those include arches, vaults, and domes under vertical and horizontal live loads and spreading supports. A two-story masonry building with a barrel vault at first level is also analyzed under variable lateral loads and support movement. Potentialities and limitations of the proposed formulation and tool are discussed on the basis of the results obtained and also in terms of computational efficiency.

ACS Style

Lucrezia Cascini; Raffaele Gagliardo; Francesco Portioli. LiABlock_3D: A Software Tool for Collapse Mechanism Analysis of Historic Masonry Structures. International Journal of Architectural Heritage 2018, 14, 75 -94.

AMA Style

Lucrezia Cascini, Raffaele Gagliardo, Francesco Portioli. LiABlock_3D: A Software Tool for Collapse Mechanism Analysis of Historic Masonry Structures. International Journal of Architectural Heritage. 2018; 14 (1):75-94.

Chicago/Turabian Style

Lucrezia Cascini; Raffaele Gagliardo; Francesco Portioli. 2018. "LiABlock_3D: A Software Tool for Collapse Mechanism Analysis of Historic Masonry Structures." International Journal of Architectural Heritage 14, no. 1: 75-94.

Journal article
Published: 01 October 2017 in Engineering Structures
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ACS Style

Francesco Portioli; Lucrezia Cascini. Large displacement analysis of dry-jointed masonry structures subjected to settlements using rigid block modelling. Engineering Structures 2017, 148, 485 -496.

AMA Style

Francesco Portioli, Lucrezia Cascini. Large displacement analysis of dry-jointed masonry structures subjected to settlements using rigid block modelling. Engineering Structures. 2017; 148 ():485-496.

Chicago/Turabian Style

Francesco Portioli; Lucrezia Cascini. 2017. "Large displacement analysis of dry-jointed masonry structures subjected to settlements using rigid block modelling." Engineering Structures 148, no. : 485-496.

Conference paper
Published: 01 January 2017 in Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015)
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ACS Style

Francesco Portioli; Lucrezia Cascini; Raffaele Landolfo; Manolis Papadrakakis; M. Fragiadakis. NON-SMOOTH CONTACT DYNAMICS OF PLANAR MASONRY STRUCTURES USING MATHEMATICAL PROGRAMMING. Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015) 2017, 2902 -2909.

AMA Style

Francesco Portioli, Lucrezia Cascini, Raffaele Landolfo, Manolis Papadrakakis, M. Fragiadakis. NON-SMOOTH CONTACT DYNAMICS OF PLANAR MASONRY STRUCTURES USING MATHEMATICAL PROGRAMMING. Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015). 2017; ():2902-2909.

Chicago/Turabian Style

Francesco Portioli; Lucrezia Cascini; Raffaele Landolfo; Manolis Papadrakakis; M. Fragiadakis. 2017. "NON-SMOOTH CONTACT DYNAMICS OF PLANAR MASONRY STRUCTURES USING MATHEMATICAL PROGRAMMING." Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015) , no. : 2902-2909.

Conference paper
Published: 01 January 2017 in Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015)
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ACS Style

Francesco Portioli; Lucrezia Cascini; Raffaele Landolfo; Manolis Papadrakakis; M. Fragiadakis. ON THE USE OF POINT CONTACT MODELS FOR COLLAPSE MECHANISM AND DYNAMIC ANALYSIS OF MASONRY STRUCTURES. Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015) 2017, 1 .

AMA Style

Francesco Portioli, Lucrezia Cascini, Raffaele Landolfo, Manolis Papadrakakis, M. Fragiadakis. ON THE USE OF POINT CONTACT MODELS FOR COLLAPSE MECHANISM AND DYNAMIC ANALYSIS OF MASONRY STRUCTURES. Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015). 2017; ():1.

Chicago/Turabian Style

Francesco Portioli; Lucrezia Cascini; Raffaele Landolfo; Manolis Papadrakakis; M. Fragiadakis. 2017. "ON THE USE OF POINT CONTACT MODELS FOR COLLAPSE MECHANISM AND DYNAMIC ANALYSIS OF MASONRY STRUCTURES." Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015) , no. : 1.

Original articles
Published: 11 November 2016 in Journal of Earthquake Engineering
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A simple variational formulation for contact dynamics is adopted to investigate the dynamic behavior of planar masonry block structures subjected to seismic events. The numerical model is a two-dimensional assemblage of rigid blocks interacting at potential contact points located at the vertices of the interfaces. A no-tension and associative frictional behavior with infinite compressive strength is considered for joints. The dynamic contact problem is formulated as a quadratic programming problem (QP) and an iterative procedure is implemented for time integration. Applications to analytical and numerical case studies are presented for validation. Comparisons with the experimental results of a masonry wall under free rocking motion and of a small scale panel with opening subjected to in-plane loads are also carried out to evaluate the accuracy and the computational efficiency of the formulation adopted.

ACS Style

Francesco Portioli; Lucrezia Cascini. Contact Dynamics of Masonry Block Structures Using Mathematical Programming. Journal of Earthquake Engineering 2016, 22, 94 -125.

AMA Style

Francesco Portioli, Lucrezia Cascini. Contact Dynamics of Masonry Block Structures Using Mathematical Programming. Journal of Earthquake Engineering. 2016; 22 (1):94-125.

Chicago/Turabian Style

Francesco Portioli; Lucrezia Cascini. 2016. "Contact Dynamics of Masonry Block Structures Using Mathematical Programming." Journal of Earthquake Engineering 22, no. 1: 94-125.

Journal article
Published: 01 April 2016 in Engineering Structures
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In this paper, a three-dimensional rigid body model is implemented to investigate the behaviour of masonry block structures subjected to foundation settlements. The structural behaviour is investigated formulating a limit analysis problem for the calculation of the base reaction and the associated failure mode once the settlement is introduced in the model. The structural model is an assemblage of rigid blocks which interact at contact interfaces. The latter are modelled as concave-contacts, using contact points located at the corners of the interface to represent interactions. A no-tension and non-associative frictional behaviour with infinite compressive strength is considered for joints. The limit analysis problem is formulated as a second order cone programming problem (SOCP) and an iterative procedure is adopted to take into account non-associative frictional behaviour. A computer program has been developed for applications of the proposed procedure. Two simple numerical examples are presented with the aim to verify the obtained results against analytical solutions. Applications to a set of experimental tests and to a 3D building model are introduced for validation and to evaluate the computational efficiency of the model. Finally a dissipation index is defined in order to give a quantitative estimation of the consequences related to the foundation settlement.

ACS Style

Francesco Portioli; Lucrezia Cascini. Assessment of masonry structures subjected to foundation settlements using rigid block limit analysis. Engineering Structures 2016, 113, 347 -361.

AMA Style

Francesco Portioli, Lucrezia Cascini. Assessment of masonry structures subjected to foundation settlements using rigid block limit analysis. Engineering Structures. 2016; 113 ():347-361.

Chicago/Turabian Style

Francesco Portioli; Lucrezia Cascini. 2016. "Assessment of masonry structures subjected to foundation settlements using rigid block limit analysis." Engineering Structures 113, no. : 347-361.

Journal article
Published: 01 January 2016 in International Journal of Masonry Research and Innovation
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International publishers of academic, scientific and professional journals since 1979.

ACS Style

Raffaele Landolfo; Lucrezia Cascini; Francesco Portioli. 3D rigid block micro-modelling of a full-scale unreinforced brick masonry building using mathematical programming. International Journal of Masonry Research and Innovation 2016, 1, 189 .

AMA Style

Raffaele Landolfo, Lucrezia Cascini, Francesco Portioli. 3D rigid block micro-modelling of a full-scale unreinforced brick masonry building using mathematical programming. International Journal of Masonry Research and Innovation. 2016; 1 (3):189.

Chicago/Turabian Style

Raffaele Landolfo; Lucrezia Cascini; Francesco Portioli. 2016. "3D rigid block micro-modelling of a full-scale unreinforced brick masonry building using mathematical programming." International Journal of Masonry Research and Innovation 1, no. 3: 189.

Proceedings article
Published: 01 January 2016 in Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)
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ACS Style

Francesco Portioli; Lucrezia Cascini; Raffaele Landolfo; Manolis Papadrakakis. ROCKING RESPONSE OF MASONRY BLOCK STRUCTURES USING MATHEMATICAL PROGRAMMING. Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016) 2016, 4959 -4968.

AMA Style

Francesco Portioli, Lucrezia Cascini, Raffaele Landolfo, Manolis Papadrakakis. ROCKING RESPONSE OF MASONRY BLOCK STRUCTURES USING MATHEMATICAL PROGRAMMING. Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016). 2016; ():4959-4968.

Chicago/Turabian Style

Francesco Portioli; Lucrezia Cascini; Raffaele Landolfo; Manolis Papadrakakis. 2016. "ROCKING RESPONSE OF MASONRY BLOCK STRUCTURES USING MATHEMATICAL PROGRAMMING." Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016) , no. : 4959-4968.

Journal article
Published: 01 January 2016 in International Journal of Masonry Research and Innovation
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In this paper, we present a three-dimensional limit equilibrium analysis of an unreinforced brick masonry building. The structure under investigation is a one-room one-floor building that has been selected from a full-scale test carried out within the framework of a joint USA-Pakistan research project. The structural model of the building is an assemblage of rigid blocks, which interact through no-tension contact surfaces with Coulomb friction. A micro-modelling approach is adopted where each masonry unit is modelled as a rigid body. The underlying limit analysis formulation is based on the concave contact model, with contact forces located at the vertices of the interfaces. Iterative calculations are carried out to deal with the non-associative friction behaviour. The numerical analysis is carried out with the aid of a computer program that provides as output the failure load and the collapse mechanism. The comparison with experimental outcomes shows that the adopted formulation is capable to predict the actual behaviour of 3D masonry structures with a reasonable computational effort.

ACS Style

Lucrezia Cascini; Francesco Portioli; Raffaele Landolfo. 3D rigid block micro-modelling of a full-scale unreinforced brick masonry building using mathematical programming. International Journal of Masonry Research and Innovation 2016, 1, 189 .

AMA Style

Lucrezia Cascini, Francesco Portioli, Raffaele Landolfo. 3D rigid block micro-modelling of a full-scale unreinforced brick masonry building using mathematical programming. International Journal of Masonry Research and Innovation. 2016; 1 (3):189.

Chicago/Turabian Style

Lucrezia Cascini; Francesco Portioli; Raffaele Landolfo. 2016. "3D rigid block micro-modelling of a full-scale unreinforced brick masonry building using mathematical programming." International Journal of Masonry Research and Innovation 1, no. 3: 189.

Journal article
Published: 01 September 2015 in International Journal of Solids and Structures
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A formulation for limit analysis of three-dimensional masonry structures modelled as rigid block assemblages is presented. A concave contact model is adopted for interfaces, using contact points located at the corners of the interface to represent interactions. A no-tension and non-associative frictional behaviour with limited compressive strength is considered for joints. The limit analysis problem is formulated as a second order cone programming problem (SOCP) and an iterative procedure is proposed to model crushing failure and to take into account non-associative frictional behaviour. Applications to numerical case studies are presented for validation. Finally, the accuracy and the computational efficiency of the proposed formulation are evaluated by a comparison with the results of a full scale experimental sub-assemblage of a masonry pier-spandrel system

ACS Style

F. Portioli; C. Casapulla; L. Cascini. An efficient solution procedure for crushing failure in 3D limit analysis of masonry block structures with non-associative frictional joints. International Journal of Solids and Structures 2015, 69-70, 252 -266.

AMA Style

F. Portioli, C. Casapulla, L. Cascini. An efficient solution procedure for crushing failure in 3D limit analysis of masonry block structures with non-associative frictional joints. International Journal of Solids and Structures. 2015; 69-70 ():252-266.

Chicago/Turabian Style

F. Portioli; C. Casapulla; L. Cascini. 2015. "An efficient solution procedure for crushing failure in 3D limit analysis of masonry block structures with non-associative frictional joints." International Journal of Solids and Structures 69-70, no. : 252-266.

Journal article
Published: 01 September 2014 in Computers & Structures
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A three-dimensional limit analysis model for masonry structures is presented. In the model the masonry is discretized as an assemblage of rigid blocks, which interact via no-tension contact surfaces with Coulomb friction. A concave contact formulation is adopted and an iterative solution procedure is used to allow the underlying non-associative friction problem to be solved. Second order cone programming (SOCP) is used to allow direct modelling of the conic failure surface. The formulation is validated against various numerical benchmark problems and then successfully applied to masonry walls and a small-scale masonry building tested experimentally.

ACS Style

Francesco Paolo Antonio Portioli; Claudia Casapulla; Matthew Gilbert; Lucrezia Cascini. Limit analysis of 3D masonry block structures with non-associative frictional joints using cone programming. Computers & Structures 2014, 143, 108 -121.

AMA Style

Francesco Paolo Antonio Portioli, Claudia Casapulla, Matthew Gilbert, Lucrezia Cascini. Limit analysis of 3D masonry block structures with non-associative frictional joints using cone programming. Computers & Structures. 2014; 143 ():108-121.

Chicago/Turabian Style

Francesco Paolo Antonio Portioli; Claudia Casapulla; Matthew Gilbert; Lucrezia Cascini. 2014. "Limit analysis of 3D masonry block structures with non-associative frictional joints using cone programming." Computers & Structures 143, no. : 108-121.

Journal article
Published: 09 June 2014 in JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT
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Atmospheric corrosion is a relevant problem for steel structures and components exposed in aggressive environment in case of poor and/or unfeasible maintenance and inspection during service life. As for thin-walled members, the corrosion hazard can be exacerbated due to the thin thickness of components and the coupled effect between corrosion and buckling can significantly reduce the structural capacity of such structures. Following these considerations, this paper presents a study on the reliability of a thin-walled steel section subjected to the damage induced by atmospheric corrosion in outdoor environments, combining predictive corrosion models for metals with structural reliability applications. A general procedure for the evaluation of the time variant capacity is proposed and discussed in detail. Finally, an application to a C-lipped cold formed section is presented and a reliability analysis of the deteriorating section is carried out to evaluate the coupled effect of corrosion and buckling, according to the proposed procedure.

ACS Style

Lucrezia Cascini; Francesco Paolo Antonio Portioli; Raffaele Landolfo. PROBABILISTIC TIME VARIANT ASSESSMENT OF THIN-WALLED STEEL MEMBERS UNDER ATMOSPHERIC CORROSION ATTACK. JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 2014, 20, 404 -414.

AMA Style

Lucrezia Cascini, Francesco Paolo Antonio Portioli, Raffaele Landolfo. PROBABILISTIC TIME VARIANT ASSESSMENT OF THIN-WALLED STEEL MEMBERS UNDER ATMOSPHERIC CORROSION ATTACK. JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT. 2014; 20 (3):404-414.

Chicago/Turabian Style

Lucrezia Cascini; Francesco Paolo Antonio Portioli; Raffaele Landolfo. 2014. "PROBABILISTIC TIME VARIANT ASSESSMENT OF THIN-WALLED STEEL MEMBERS UNDER ATMOSPHERIC CORROSION ATTACK." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 20, no. 3: 404-414.

Journal article
Published: 16 April 2014 in Meccanica
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In this paper, a masonry system composed of a facade wall connected with two sidewalls and subjected to out-of-plane loading is investigated within the framework of three-dimensional limit analysis. Two different modeling approaches, namely macro and micro-block models, are adopted. A rigid-perfectly-plastic model with dry contact interfaces governed by Coulomb failure criterion is assumed for masonry walls with regular units and staggering (non-standard limit analysis). Three classes of failure modes are investigated, involving rocking, sliding, twisting failure and combinations of them. The macro-block model is based on the assumption that the failure involves a number of cracks which separate the structure into a few macro-blocks and all the possible relative motions among micro-blocks are concentrated along the cracks. Two limiting conditions for the ultimate load factor are kinematically computed by use of minimization routines. The micro-block model is based on a concave contact formulation in which contact points are located at the corners of interfaces, allowing failure modes involving opening and sliding to be simulated. An iterative solution procedure is used to solve the non-associative friction problem, with second order cone programming (SOCP) used to allow the conic yield function to be solved directly. Both models are validated against experimental outcomes from the literature. A parametric analysis is carried out in order to highlight the influence of each geometrical and mechanical parameter on the prevalence of a mechanism over the other. The presence of an unrestrained horizontal floor system with different orientations is also analyzed

ACS Style

C. Casapulla; Lucrezia Cascini; Francesco Paolo Antonio Portioli; Raffaele Landolfo. 3D macro and micro-block models for limit analysis of out-of-plane loaded masonry walls with non-associative Coulomb friction. Meccanica 2014, 49, 1653 -1678.

AMA Style

C. Casapulla, Lucrezia Cascini, Francesco Paolo Antonio Portioli, Raffaele Landolfo. 3D macro and micro-block models for limit analysis of out-of-plane loaded masonry walls with non-associative Coulomb friction. Meccanica. 2014; 49 (7):1653-1678.

Chicago/Turabian Style

C. Casapulla; Lucrezia Cascini; Francesco Paolo Antonio Portioli; Raffaele Landolfo. 2014. "3D macro and micro-block models for limit analysis of out-of-plane loaded masonry walls with non-associative Coulomb friction." Meccanica 49, no. 7: 1653-1678.

Conference paper
Published: 01 January 2014 in Proceedings of the Twelfth International Conference on Computational Structures Technology
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ACS Style

Claudia Casapulla; F. Portioli; Lucrezia Cascini. Non-Standard Limit Analysis of Three-Dimensional Masonry Systems subjected to Out-of-Plane Loading. Proceedings of the Twelfth International Conference on Computational Structures Technology 2014, 1 .

AMA Style

Claudia Casapulla, F. Portioli, Lucrezia Cascini. Non-Standard Limit Analysis of Three-Dimensional Masonry Systems subjected to Out-of-Plane Loading. Proceedings of the Twelfth International Conference on Computational Structures Technology. 2014; ():1.

Chicago/Turabian Style

Claudia Casapulla; F. Portioli; Lucrezia Cascini. 2014. "Non-Standard Limit Analysis of Three-Dimensional Masonry Systems subjected to Out-of-Plane Loading." Proceedings of the Twelfth International Conference on Computational Structures Technology , no. : 1.

Conference paper
Published: 01 January 2014 in Proceedings of the Twelfth International Conference on Computational Structures Technology
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ACS Style

F. Portioli; Claudia Casapulla; Lucrezia Cascini. Application of a Three-Dimensional Rigid Block Model to the Limit Analysis of Large Scale Masonry Panels. Proceedings of the Twelfth International Conference on Computational Structures Technology 2014, 1 .

AMA Style

F. Portioli, Claudia Casapulla, Lucrezia Cascini. Application of a Three-Dimensional Rigid Block Model to the Limit Analysis of Large Scale Masonry Panels. Proceedings of the Twelfth International Conference on Computational Structures Technology. 2014; ():1.

Chicago/Turabian Style

F. Portioli; Claudia Casapulla; Lucrezia Cascini. 2014. "Application of a Three-Dimensional Rigid Block Model to the Limit Analysis of Large Scale Masonry Panels." Proceedings of the Twelfth International Conference on Computational Structures Technology , no. : 1.

Journal article
Published: 01 December 2013 in Engineering Structures
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In this paper a rigid block model with cracking units and cohesive joints is developed for limit analysis of masonry structures using linear programming. The model is applicable to in-plane loaded unreinforced masonry block walls with regular textures and provides as output failure loads and collapse mechanisms. A simplified micro-modelling approach is adopted, based on the discretization of masonry units into triangular blocks separated by contact interfaces. Tensionless contact interfaces are used to model dry joints and cohesive contacts are introduced for mortar joints and internal unit interfaces. Failure modes at contact interfaces involve cracking, crushing and sliding. An iterative solution procedure is used to model non-associative flow rule in sliding and to take into account no-tension behaviour of cohesive joints in case of cracking. The modelling approach is validated and applied to different structural examples from the literature, including unconfined and confined masonry panels and a masonry beam. To show the accuracy of the proposed model and the improvement of the predicted response, the obtained results are compared with experimental tests and with the outcomes of standard rigid block models using a single block per masonry unit and tensionless interface

ACS Style

Francesco Paolo Antonio Portioli; Lucrezia Cascini; Claudia Casapulla; Mario D'Aniello. Limit analysis of masonry walls by rigid block modelling with cracking units and cohesive joints using linear programming. Engineering Structures 2013, 57, 232 -247.

AMA Style

Francesco Paolo Antonio Portioli, Lucrezia Cascini, Claudia Casapulla, Mario D'Aniello. Limit analysis of masonry walls by rigid block modelling with cracking units and cohesive joints using linear programming. Engineering Structures. 2013; 57 ():232-247.

Chicago/Turabian Style

Francesco Paolo Antonio Portioli; Lucrezia Cascini; Claudia Casapulla; Mario D'Aniello. 2013. "Limit analysis of masonry walls by rigid block modelling with cracking units and cohesive joints using linear programming." Engineering Structures 57, no. : 232-247.

Conference paper
Published: 16 August 2013 in Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing
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ACS Style

F. Portioli; C. Casapulla; L. Cascini; Raffaele Landolfo. Three-Dimensional Limit Analysis of Dry-Joint Masonry Walls using Rigid Block Modelling. Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing 2013, 102, 1 .

AMA Style

F. Portioli, C. Casapulla, L. Cascini, Raffaele Landolfo. Three-Dimensional Limit Analysis of Dry-Joint Masonry Walls using Rigid Block Modelling. Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing. 2013; 102 ():1.

Chicago/Turabian Style

F. Portioli; C. Casapulla; L. Cascini; Raffaele Landolfo. 2013. "Three-Dimensional Limit Analysis of Dry-Joint Masonry Walls using Rigid Block Modelling." Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing 102, no. : 1.

Conference paper
Published: 16 August 2013 in Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing
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ACS Style

Francesco Paolo Antonio Portioli; Lucrezia Cascini; Claudia Casapulla; M. D'Aniello. Computational Limit Analysis of Masonry Panels with Cracking Units using Rigid Block Modelling. Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing 2013, 102, 1 .

AMA Style

Francesco Paolo Antonio Portioli, Lucrezia Cascini, Claudia Casapulla, M. D'Aniello. Computational Limit Analysis of Masonry Panels with Cracking Units using Rigid Block Modelling. Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing. 2013; 102 ():1.

Chicago/Turabian Style

Francesco Paolo Antonio Portioli; Lucrezia Cascini; Claudia Casapulla; M. D'Aniello. 2013. "Computational Limit Analysis of Masonry Panels with Cracking Units using Rigid Block Modelling." Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing 102, no. : 1.