An inverse analysis procedure for material parameter identification of mortar joints in unreinforced masonry

Chisari, Corrado; Macorini, Lorenzo; Amadio, Claudio; Izzuddin, B.A.

doi:10.1016/j.compstruc.2015.02.008

Cited by 32 publications

(17 citation statements)

References 28 publications

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“…One of the merits of the proposed mesoscale description is that an accurate calibration of material parameters can be achieved performing relatively simple tests at component level and low invasive in-situ experiments in the case of existing structures. In particular, the experimental-numerical calibration procedure proposed in [35,36] can be adopted, where simple tests with flat jacks are coupled with inverse analysis techniques for mesoscale material parameters calibration.…”

Section: D Mesoscale Descriptionmentioning

confidence: 99%

Mesoscale partitioned analysis of brick-masonry arches

Zhang

Macorini

Izzuddin

2016

Engineering Structures

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Section: D Mesoscale Descriptionmentioning

confidence: 99%

Mesoscale partitioned analysis of brick-masonry arches

Zhang

Macorini

Izzuddin

2016

Engineering Structures

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“…Compared to more common gradient-based algorithms, they are able to escape local optima and find a solution when the analytical form of the objective function is not known. In this work the software TOSCA, developed at the University of Trieste and previously utilised in identification problems [38,39], was employed. A population of potential solutions (individuals) is created and the objective function is evaluated for each individual.…”

Section: Optimal Tuning Of Tmds By Means Of Gasmentioning

confidence: 99%

Optimal design of tuned mass dampers for a multi‐storey cross laminated timber building against seismic loads

Poh’sié

Chisari

Rinaldin

et al. 2016

Earthq Engng Struct Dyn

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Summary In this paper, the effectiveness of different design solutions for tuned mass dampers (TMD) applied to high‐rise cross‐laminated (X‐Lam) timber buildings as a means to reduce the seismic accelerations was investigated. A seven‐storey full‐scale structure previously tested on shaking table was used as a reference. The optimal design parameters of the TMDs, i.e. damping and frequency ratios, were determined by using a genetic algorithm on a simplified model of the reference structure, composed by seven masses each representing one storey. The optimal solutions for the TMDs were then applied to a detailed finite element model of the seven‐storey building, where the timber panels were modelled with shell elements and the steel connectors with linear spring. By comparing the numerical results of the building with and without multiple TMDs, the improvement in seismic response was assessed. Dynamic time‐history analyses were carried out for a set of seven natural records, selected in accordance with Eurocode 8, on the simplified model, and for Kobe earthquake ground motion on the detailed model. Results in terms of acceleration reduction for different TMD configurations show that the behaviour of the seven‐storey timber building can be significantly improved, especially at the upper storeys. Copyright © 2016 John Wiley & Sons, Ltd.

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“…1). A Genetic Algorithm with the following properties was used: Each one of the listed parameters was set based on previous research in optimization problems (Chisari et al, 2015a;2015b). The Genetic Algorithm was implemented in the software TOSCA (Chisari, 2015).…”

Section: Optimization Analysesmentioning

confidence: 99%

Multi-Objective Optimization of FRP Jackets for Improving the Seismic Response of Reinforced Concrete Frames

Chisari¹,

Bedon²

2016

American Journal of Engineering and Applied Sciences

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Abstract:In this study, a multi-objective Genetic Algorithm (GA) optimization procedure is proposed for the seismic retrofitting of Reinforced Concrete (RC) building frames via Fiber-Reinforced Polymer (FRP) jackets. The optimization problem is solved via numerically efficient but accurate Finite-Element (FE) models able to take into account the strengthening and ductility increase contribution for a given FRP jacketing configuration. Based on a reference RC frame case study, an optimization approach aimed to maximize the frame ductility and minimize the FRP volume/cost is proposed, by taking into account different FRP jackets thicknesses for the internal and external columns and well as for each separate frame floor. In doing so, careful consideration is paid also to the expected collapse mechanism for the frame and the approach to embed a further objective able to control the collapse mechanism into the procedure is described. The results show the potential of the approach, which not only provides the entire Pareto Front of the multi-objective optimization problem, but also allows for general considerations about the influence of the design variables on the response of a given RC building.

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An inverse analysis procedure for material parameter identification of mortar joints in unreinforced masonry

Cited by 32 publications

References 28 publications

Mesoscale partitioned analysis of brick-masonry arches

Mesoscale partitioned analysis of brick-masonry arches

Optimal design of tuned mass dampers for a multi‐storey cross laminated timber building against seismic loads

Multi-Objective Optimization of FRP Jackets for Improving the Seismic Response of Reinforced Concrete Frames

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