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Your search keyword '"De Biagi, V."' showing total 2 results
Start Over Author "De Biagi, V." Topic structural engineering
2 results on '"De Biagi, V."'

1. A quick-assessment procedure to evaluate the degree of conservation of rockfall drapery meshes.

Author

Marchelli, M., De Biagi, V., and Peila, D.

Subjects
*FINITE element method, *COMPUTER simulation, *HYDRAULIC engineering, *STRUCTURAL engineering, *MESH networks
Abstract

Drapery meshes are protection devices installed on a cliff for mitigating rockfall hazard. They can prevent the detachment of rock fragments and control the dynamics of the falling blocks. During their design working life, drapery meshes are subjected to ageing phenomena, corrosion and impact, which can invalidate the purposes of the protection devices. A novel procedure based on a multi-hierarchical assessment of the damages is proposed. The approach is tailored for two technologies well diffused in the Alps. The main components of the system are identified and the effects of each potential damage on the overall behaviour are taken into account through risk analysis approached. A site campaign serving to test the procedure is described. The proposed approach can be modified to consider other drapery mesh installation types. [ABSTRACT FROM AUTHOR]

Published
2019
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2. Implementation of progressive damage in finite element codes for the assessment of robustness

Author

Valerio De Biagi, Gaetano Manfredi, Bernardino Chiaia, Domenico Asprone, Fulvio Parisi, Papadrakakis M., Papadopoulos V., Stefanou G., Plevris V., Asprone, Domenico, Chiaia, B., De Biagi, V., Manfredi, Gaetano, and Parisi, Fulvio

Subjects
Commercial software, Nonlinear FEM, business.industry, Computer science, Applied Mathematics, Progressive damage, Robustness, Artificial Intelligence, Structural engineering, Nonlinear finite element analysis, Finite element method, Seismic analysis, Nonlinear system, Software, Robustness (computer science), Total removal, Robustness, Progressive Damage, Nonlinear FEM, Commercial software, business
Abstract

Different procedures for assessing the robustness of a reinforced concrete (RC) frame under progressive damage are proposed and compared. The removal of a column in a RC frame structure is modeled with a commercial nonlinear finite element software according to three alternative strategies: (i) reduction of mechanical properties of the damaged column, (ii) incre- mental loading of the structure after total removal of the damaged column, and (iii) incremental unloading of internal forces on the damaged column. Nonlinear analysis is performed under a prescribed load combination on three concrete frames designed with three Italian building codes in force in different periods. Despite the differences in the strategies for damage mod- eling, similarities between structural response predictions are highlighted. In addition, it is shown that seismic design provisions for RC building structures increase the ductility of the structure but do not guarantee the robustness against the removal of a column.

Published
2016

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