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Erschienen in:
2023 | OriginalPaper | Buchkapitel
Advanced Constitutive Laws for Nonlinear Static Analyses of Masonry Structures
verfasst von : Adalgisa Zirpoli, Stefano Farina
Erschienen in: Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures
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Abstract
In recent years, the use of static non-linear analysis, the so-called pushover analysis, is increasingly common when dealing with seismic vulnerability assessment and mitigation of existing buildings.
The pushover analysis has the final goal to determine the relation between the base shear and the displacement of a control node to determine the capacity curve of the structure, together with the evaluation of the maximum displacement reached after a seismic event. Finally, by post-processing such information, it is possible to perform comparisons in terms of displacements or acceleration to evaluate vulnerability index of the structure.
Many Finite Element software include this type of analysis among their various features. Therefore, computational algorithms are becoming useful tools to deal with seismic vulnerability issues, thanks to their robustness.
Non-linear static analyses are usually performed on masonry and reinforced concrete structures, by assigning plastic material properties to the main elements of the structure.
In this paper, an advanced constitutive law is presented, the Concrete Damage Plasticity model, highlighting the main features and the parameters involved in its implementation.
Finally, the application of this constitutive model is presented on a real existing concrete-masonry structure, by means of the software Midas Gen.