Vulnerability Analysis of Structural Systems under Extreme Flood Events
Vulnerability analyses of coastal or inland bridges in terms of flood actions and structural and fluid flow characteristics are carried out. In particular, a numerical model based on a two-phase fluid flow is implemented for the multiphase fluid system, whereas a three-dimensional formulation based...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-08-01
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| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/10/8/1121 |
| _version_ | 1797409460025556992 |
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| author | Fabrizio Greco Paolo Lonetti |
| author_facet | Fabrizio Greco Paolo Lonetti |
| author_sort | Fabrizio Greco |
| collection | DOAJ |
| description | Vulnerability analyses of coastal or inland bridges in terms of flood actions and structural and fluid flow characteristics are carried out. In particular, a numerical model based on a two-phase fluid flow is implemented for the multiphase fluid system, whereas a three-dimensional formulation based on shell/volume finite elements is adopted for the structure. The governing equations can simulate the interaction between fluids and the structures, by using the Arbitrary Lagrangian–Eulerian (ALE) strategy. The results of the hydrodynamic forces, bridge displacements and dynamic amplification factors (DAFs) show that the existing formulas, available in the literature or in structural design codes, do not accurately predict the maximum design effects. For the investigated cases, the DAFs may vary from 1 to 4.5. The worst scenarios are observed for the upload vertical direction. Finally, the performance of the protection fairing system is investigated. The results show that such devices are able to efficiently reduce the effects of the wave load in terms of the applied hydraulic forces on the structure and bridge deformability, in particular, with 40% more accuracy than the unprotected configuration. |
| first_indexed | 2024-03-09T04:15:42Z |
| format | Article |
| id | doaj.art-300bd9b48e234a5bacff088403a83d55 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T04:15:42Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-300bd9b48e234a5bacff088403a83d552023-12-03T13:54:29ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-08-01108112110.3390/jmse10081121Vulnerability Analysis of Structural Systems under Extreme Flood EventsFabrizio Greco0Paolo Lonetti1Department of Civil Engineering, University of Calabria, 87036 Rende, CS, ItalyDepartment of Civil Engineering, University of Calabria, 87036 Rende, CS, ItalyVulnerability analyses of coastal or inland bridges in terms of flood actions and structural and fluid flow characteristics are carried out. In particular, a numerical model based on a two-phase fluid flow is implemented for the multiphase fluid system, whereas a three-dimensional formulation based on shell/volume finite elements is adopted for the structure. The governing equations can simulate the interaction between fluids and the structures, by using the Arbitrary Lagrangian–Eulerian (ALE) strategy. The results of the hydrodynamic forces, bridge displacements and dynamic amplification factors (DAFs) show that the existing formulas, available in the literature or in structural design codes, do not accurately predict the maximum design effects. For the investigated cases, the DAFs may vary from 1 to 4.5. The worst scenarios are observed for the upload vertical direction. Finally, the performance of the protection fairing system is investigated. The results show that such devices are able to efficiently reduce the effects of the wave load in terms of the applied hydraulic forces on the structure and bridge deformability, in particular, with 40% more accuracy than the unprotected configuration.https://www.mdpi.com/2077-1312/10/8/1121fluid–structure interactionflooding protection strategiescomputational fluid dynamicsstructural performance |
| spellingShingle | Fabrizio Greco Paolo Lonetti Vulnerability Analysis of Structural Systems under Extreme Flood Events Journal of Marine Science and Engineering fluid–structure interaction flooding protection strategies computational fluid dynamics structural performance |
| title | Vulnerability Analysis of Structural Systems under Extreme Flood Events |
| title_full | Vulnerability Analysis of Structural Systems under Extreme Flood Events |
| title_fullStr | Vulnerability Analysis of Structural Systems under Extreme Flood Events |
| title_full_unstemmed | Vulnerability Analysis of Structural Systems under Extreme Flood Events |
| title_short | Vulnerability Analysis of Structural Systems under Extreme Flood Events |
| title_sort | vulnerability analysis of structural systems under extreme flood events |
| topic | fluid–structure interaction flooding protection strategies computational fluid dynamics structural performance |
| url | https://www.mdpi.com/2077-1312/10/8/1121 |
| work_keys_str_mv | AT fabriziogreco vulnerabilityanalysisofstructuralsystemsunderextremefloodevents AT paololonetti vulnerabilityanalysisofstructuralsystemsunderextremefloodevents |