Probabilistic thermo-mechanical analysis of a concrete tunnel lining subject to fire
- A probabilistic finite elements analysis (FEA) of a tunnel lining subject to fire is presented. The probability distributions of the parameters related to the thermal analysis was considered in order to study the variability of the results and to carry out a reliability analysis. This assessment considered as random variables the thermo-mechanical properties of the concrete, the maximum heat release rate (HRR), the duration of the period of maximum HRR, the convective coefficient, the emissivity at the surface exposed to the fire, the air velocity within the tunnel, and the initial fire radius. The temperature-time curve was described by a correlation. An experimental design based on a Latin Hypercube Sampling algorithm was performed to define the input parameters to each analysis case. The definition of a limit state function based on the punctual strain status has permitted to carry out a reliability analysis.
Autor*innen: | Roberto Chaves Spoglianti de Souza |
---|---|
Koautor*innen: | Francesco Rosignuolo, M. Andreini, S. La Mendola, Christian Knaust |
Dokumenttyp: | Vortrag |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2017 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau | |
Freie Schlagwörter: | Concrete; Fire; Latin hypercube; Probabilistic analysis; Tunnel |
Veranstaltung: | IFireSS 2017 – 2nd International Fire Safety Symposium |
Veranstaltungsort: | Naples, Italy |
Beginndatum der Veranstaltung: | 07.06.2017 |
Enddatum der Veranstaltung: | 09.06.2017 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 19.06.2017 |
Referierte Publikation: | Nein |
Eingeladener Vortrag: | Nein |