Seismic fragility curves for vulnerability assessment of steel fiber reinforced concrete segmental tunnel linings
| Autor: | Cristian de Santos, Albert de la Fuente, Mohammad Jamshidi Avanaki, Shahram Vahdani, Abdollah Hoseini |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció |
| Předmět: |
Tunnels--Earthquake effects
0211 other engineering and technologies Rebar 02 engineering and technology Fiber-reinforced concrete Time saving law.invention Fragility law Vulnerability assessment 021105 building & construction Macro Enginyeria civil::Geotècnia::Sismologia [Àrees temàtiques de la UPC] Reinforcement Enginyeria civil::Geotècnia::Túnels i excavacions [Àrees temàtiques de la UPC] 021101 geological & geomatics engineering Vulnerability (computing) business.industry Building and Construction Structural engineering Geotechnical Engineering and Engineering Geology Construcció en formigó armat amb fibres d'acer SFRC Segmental tunnel Seismic vulnerability Fragility curve business Túnels -- Disseny i construcció Geology |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | In recent years, application of fibers as a replacement for conventional reinforcement in segmented lined tunnels has gained great interest due to resulting cost and time savings. In seismically active regions, the seismic vulnerability of underground tunnels is of great concern. The aim of this paper is to investigate the effects of different composites of Steel FRC (SFRC), as the tunnel’s lining material, on its seismic vulnerability, compared to each other and to that of unreinforced and conventionally reinforced concrete cases, employing analytical fragility curves. Results show that steel fibers, especially micro size fibers and for higher states of damage, display better seismic performance over conventional steel rebar in reinforced concrete linings. For best performance, a hybrid SFRC mix containing both micro and macro fibers, with a higher content of micro fibers over macro ones, is a technically preferable option for the design of segmental lining tunnels in seismic zones. |
| Databáze: | OpenAIRE |
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