| Naslov: | Investigating the thermal penetration in structural timber elements exposed to natural fires |
|---|
| Avtorji: | ID Lucherini, Andrea (Avtor)
ID Mózer, Vladimír (Avtor) |
|---|
| Datoteke: |  URL - Izvorni URL, za dostop obiščite https://doi.org/10.52202/080513-0450
 PDF - Predstavitvena datoteka, prenos (3,57 MB)
MD5: 778543A6439ABCF343F23E77ADFAD200
|
|---|
| Jezik: | Angleški jezik |
|---|
| Tipologija: | 1.08 - Objavljeni znanstveni prispevek na konferenci |
|---|
| Organizacija: |  ZAG - Zavod za gradbeništvo Slovenije
|
|---|
| Povzetek: | This study investigates fire-induced charring and thermal penetration in structural timber elements exposed to natural fire conditions, with a focus on the critical role of the cooling phase. A simplified 1D heat transfer model, based on Eurocode 5 temperature-dependent material properties, is implemented to simulate the thermal response of timber members subjected to Eurocode parametric fire curves. The analysis quantifies the char depth (300 °C isotherm) and the zero-strength layer, using both temperature-based (80-300 °C and 120-300 °C) and reduced mechanical properties approaches (tension and compression). Results show that, while the char depth predominantly develops during the heating phase, the zero-strength layer continues to grow during cooling, often reaching a thickness comparable to the char layer. The effective char depth (char depth + zero-strength layer) typically reaches its maximum towards the end of the cooling phase, representing the most critical condition for load-bearing capacity. The most severe conditions arise in low ventilation and high fuel load scenarios, characterised by long-duration fires rather than the highest temperatures. The findings highlight the need to explicitly consider the cooling phase in performance-based fire design for timber structures. |
|---|
| Ključne besede: | timber structures, fire safety, charring, zero-strength layer, cooling |
|---|
| Status publikacije: | Objavljeno |
|---|
| Verzija publikacije: | Objavljena publikacija |
|---|
| Datum objave: | 01.06.2025 |
|---|
| Založnik: | World Conference on Timber Engineering |
|---|
| Leto izida: | 2025 |
|---|
| Št. strani: | str. 3674-3683 |
|---|
| PID: | 20.500.12556/DiRROS-23009  |
|---|
| UDK: | 624 |
|---|
| DOI: | 10.52202/080513-0450 |
|---|
| COBISS.SI-ID: | 241463811 |
|---|
| Avtorske pravice: | © WORLD CONFERENCE ON TIMBER ENGINEERING 2025 (WCTE 2025) |
|---|
| Opomba: |
|
|---|
| Datum objave v DiRROS: | 16.07.2025 |
|---|
| Število ogledov: | 370 |
|---|
| Število prenosov: | 249 |
|---|
| Metapodatki: |    |
|---|
|
:
|
Kopiraj citat |
|---|
| | | | Objavi na: |  |
|---|
Postavite miškin kazalec na naslov za izpis povzetka. Klik na naslov izpiše
podrobnosti ali sproži prenos. |
