Παρακαλώ χρησιμοποιήστε αυτό το αναγνωριστικό για να παραπέμψετε ή να δημιουργήσετε σύνδεσμο προς αυτό το τεκμήριο:
https://hdl.handle.net/123456789/446| Τύπος: | Ανακοίνωση σε συνέδριο |
| Τίτλος: | Damage assessment of final linings in metro tunnels due to fire action |
| Συγγραφέας: | [EL] Σακκάς, Κωνσταντίνος-Μιλτιάδης[EN] Sakkas, Konstantinos-Miltiadis [EL] Βαγιόκας, Νικόλαος[EN] Vagiokas, Nikolaos [EL] Καλλιανιώτης, Αναστάσιος [EN] Kallianiotis, Anastasios [EL] Λούπα, Γλυκερία[EN] Loupa, Glykeria |
| Ημερομηνία: | 01/05/2019 |
| Περίληψη: | A crucial element of a tunnel lining design in metro tunnels is the time and the way till the final lining will begin to spall due to the high temperatures, which may be developed during a fire. Although the structural elements of the tunnel lining are considered inflamable, in a real fire situation the concrete lining can be spalled largely, sometimes perhaps entirely, with very serious consequences on cost and safety of people. The spalling rate of concrete as well as the spalling depth are two main values that cannot be measured since they are affected by a series of factors including mechanical properties, permeability of concrete and age of concrete. A lot of research has taken place in order to calculate the spalling of the concrete using numerical models, which however is not validated sufficiently by the test results. So the target of the specific research is to investigate experimentally the rate and the depth of spalling for several types of concrete under high temperatures. On this purpose specimen of all types of concrete that can be found in metro tunnels were manufactured and exposed at high temperature in a special furnace which has the ability to simulate all kind of fire scenarios and at the same time monitor the spalling depth and time. The temperature of the exposure was selected after modelling of a 25 MW fire in a metro tunnel. The modelling simulated the distribution of the temperature along the tunnel in case of a 25MW fire and representative values of the temperature for 10, 20, 50 and 100m away from the fire ignition were selected. |
| Γλώσσα: | Αγγλικά |
| Τόπος δημοσίευσης: | Naples, Italy |
| Σελίδες: | 7 |
| DOI: | 10.1201/9780429424441 |
| ISBN: | 9780429424441 |
| Θεματική κατηγορία: | [EL] Επιστήμη Πολιτικού Μηχανικού[EN] Civil Engineering |
| Λέξεις-κλειδιά: | tunnel safety |
| Κάτοχος πνευματικών δικαιωμάτων: | © by the authors © 2019 Informa UK Limited, trading as Taylor & Francis Group |
| Είναι μέρος του: | Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art |
| Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη: | https://www.taylorfrancis.com/chapters/damage-assessment-final-linings-metro-tunnels-due-fire-action-sakkas-vagiokas-kallianiotis-loupa/e/10.1201/9780429424441-526 |
| Τίτλος πηγής δημοσίευσης: | Book Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art - Proceedings of the WTC 2019 ITA-AITES World Tunnel Congress (WTC 2019) |
| Όνομα εκδήλωσης: | World Tunnel Congress (WTC 2019) |
| Τοποθεσία εκδήλωσης: | Naples, Italy |
| Ημ/νία έναρξης εκδήλωσης: | 03/05/2019 |
| Ημ/νία λήξης εκδήλωσης: | 09/05/2019 |
| Σημειώσεις: | This research was funded by the project encoded EDVM 34 and title "Support of researchers with emphasis on young researchers" of the priority axis "Development of Human Resources, Education and Lifelong Learning" in Priority Axes 6, 8 and 9, co-funded by the European Social Fund (ECT) and the National Strategic Reference Framework |
| Εμφανίζεται στις συλλογές: | Ερευνητικές ομάδες |
Αρχεία σε αυτό το τεκμήριο:
| Αρχείο | Περιγραφή | Σελίδες | Μέγεθος | Μορφότυπος | Έκδοση | Άδεια | |
|---|---|---|---|---|---|---|---|
| New Researchers _WTC_rev .pdf | 1.68 MB | Adobe PDF | - |  | Δείτε/ανοίξτε |